معرفي نشريه
علمی
This journal publishes the new results of completed, original studies on any aspect of plant physiology-based also on approaches and methods of biochemistry, biophysics, genetics, molecular biology, genetic engineering, applied plant physiology, and other related fields. We also accept descriptions of original methods and instruments opening novel possibilities for obtaining and analyzing experimental results. Papers outlining trends and hypotheses are accepted as well. Brief communications are not accepted. However, in some cases, the editors may suggest that authors shorten a manuscript to the size of a brief communication (no more than 10 pages of text and 4 figures and / or tables in all). Manuscript submission implies that the material has not been published before, and is not under consideration for publication anywhere else.
The level of the Iranian Journal of Plant Physiology according to the latest evaluation list and ranking of scientific journals of The Ministry of Science and Research of the Islamic Republic of Iran in 2020 was promoted to an international, peer-reviewed journal publishing high-quality, original research. Please see the journal's Aims and Scope for information about its focus and peer-review policy.
Please note that this journal only publishes manuscripts in English.
https://journals.msrt.ir/home/detail/11165/
نتایج ارزیابی و رتبه بندی سال 1400 نشریات علمی وزارت عتف
آخرین مقالات منتشر شده
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دسترسی آزاد مقاله
1 - The Effect of Planting Date on Thermal Indices and Dry matter Yield of Different Clover Species
Mohammad Zamanian Mona Poureisa Farid Golzardiشماره 1 , دوره 14 , زمستان 2024This study aimed to investigate the changes in thermal indices of various clover genotypes under cold stress. A field experiment was conducted to evaluate the effect of different planting dates (14 Sep., 28 Sep., and 8 Oct.) and clover genotypes (late-maturity Persian c چکیده کاملThis study aimed to investigate the changes in thermal indices of various clover genotypes under cold stress. A field experiment was conducted to evaluate the effect of different planting dates (14 Sep., 28 Sep., and 8 Oct.) and clover genotypes (late-maturity Persian clover, mid-maturity Persian clover, early-maturity Persian clover, berseem clover, red clover, and crimson clover). The results showed that delaying the planting date from September 14 to October 8 caused a significant decrease in growing degree-day (GDD), photothermal index (PTI), and heat use efficiency (HUE) in all studied genotypes. Early-maturity Persian clover and crimson clover had the lowest thermal requirements, while red clover had the highest GDD in all the investigated planting dates. During the first cut, the early-maturity Persian clover demonstrated the highest HUE (4.09 kg ha-1 °C days), followed by crimson clover. In contrast, red clover recorded the lowest HUE (1.43 kg ha-1°C days) on the last planting date. Early-maturity Persian clover and crimson clover may be preferred for forage production under cold stress due to their higher HUE values. The highest dry matter yield of the first cut (6300 kg ha-1) was obtained on the first planting date and by mid-maturity Persian clover, while the lowest yield (2429 kg ha-1) was obtained on the last planting date and by red clover. Overall, delayed planting dates resulted in accelerated development and decreased thermal requirements in clover species. The early-maturity genotypes were found to be more suitable for forage production under environmental stresses such as water shortages. پرونده مقاله -
دسترسی آزاد مقاله
2 - UV-B effects on the activity and gene expression of several antioxidant enzymes in Peppermint (Mentha x piperita L.)
Neda Moazzami Rashid Jamei Gholamreza Abdiشماره 1 , دوره 14 , زمستان 2024Peppermint infusion is a popular herbal drink with a number of benefits on cardiovascular, digestive, respiratory systems. Recent researches demonstrated that ultraviolet radiation can have an effect on peppermint essential oil. Considering the actual increasing of UV-B چکیده کاملPeppermint infusion is a popular herbal drink with a number of benefits on cardiovascular, digestive, respiratory systems. Recent researches demonstrated that ultraviolet radiation can have an effect on peppermint essential oil. Considering the actual increasing of UV-B in the sun radiation, it’s important to estimate real conditions and which economic consequences it may have. Mentha x piperita L. plants grown in field were irradiated for one hour with UV-B light (310 nm, 3.8 Wm-2), in the middle of the day, for two days. The five upper leaves were collected at 4, 20, 24, 28, 44 and 48 h after the first treatment. Plants of M. x piperita cultivated under the same circumstances without the treatment were utilized as the control at each time point. Results showed that the biosynthesis of peppermint essential oil is modulated by UV-B irradiation, but the plants have also their mechanisms of protection from UV by increasing the ROS-scavenging enzymes activity. Also, expression of some involved genes in pathway modified in the presence of UV and showed regulating effect in essential oil biosynthesis significantly. Another confirmation of the protection from UV-B light was the stable concentration of photosynthetic pigments. Analysis of ROS-scavenging enzymes suggests that plants had an oxidative stress. In conclusion, this work is a one step to understand the regulation of terpenoid biosynthesis and the effects of UV-B radiation on it. Complex analysis of whole plant’ response will be helpful for this aim. پرونده مقاله -
دسترسی آزاد مقاله
3 - The effect of talc, kaolin, and zinc oxide on heat stress in pomegranate cv. Malas saveh
Masoud Nazeri Seyed Jalal Tabatabaei Nasrin Mollayiشماره 1 , دوره 14 , زمستان 2024Sunburn is one of the significant problems in pomegranate growing, which reduces fruit yield and quality. This study was conducted to evaluate the impact of the application of antiperspirants on the quality and biochemical properties of pomegranate fruits. The experimen چکیده کاملSunburn is one of the significant problems in pomegranate growing, which reduces fruit yield and quality. This study was conducted to evaluate the impact of the application of antiperspirants on the quality and biochemical properties of pomegranate fruits. The experiment was carried out as a completely randomized design with nine treatments and three replications. Treatments include 2% solution talc (T), zinc oxide (ZnO), kaolin (K), zinc oxide+talc (ZnT), talc+kaolin (TK), zinc oxide+kaolin (ZnT), zinc oxide+talc+kaolin (ZnTK), shading with 50% light passing and control (sprayed with water). The highest edible fruit was measured in the ZnO treatment. The maximum and minimum thickness of fruit peel was measured in the control and shading treatments, respectively. ZnO treatment reduced the thickness of the fruit peel by 30.8% compared to the control. The lowest temperature of fruit and leaf was measured in shading and ZnT treatment, respectively. The control treatment produced the lowest Fv/Fm and leaf area, (LA), and the shading treatment resulted the highest Fv/Fm, LA and chlorophyll. ZnO treatment increased Fv/Fm and LA by 11.95% and 15.55%, respectively, compared to the control. The highest anthocyanin and phenol of juice were recorded in shading treatment. The highest fruit peel phenol and the lowest fruit peel lipoxygenase activity were measured in the ZnTK treatment. The results indicated that the ZnO treatment is a suitable treatment due to the decrease in the percentage of fruit peel and the increase in the Fv/Fm and the decrease in the activity of the lipoxygenase enzyme. پرونده مقاله -
دسترسی آزاد مقاله
4 - The Effect of Mycorrhiza and Humic Acid Application on the Quantitative and Qualitative Yield of Red Bean, Derakhshan Cultivar
Ali Asghar Goharivahid Mojtaba Yousefiradشماره 1 , دوره 14 , زمستان 2024a factorial pot experiment was conducted in the form of a complete random block design with three repetitions under greenhouse condition. The first factor of the study was mycorrhiza at three levels, namely control (no mycorrhiza), Glomus intraradices strain, and Glomus چکیده کاملa factorial pot experiment was conducted in the form of a complete random block design with three repetitions under greenhouse condition. The first factor of the study was mycorrhiza at three levels, namely control (no mycorrhiza), Glomus intraradices strain, and Glomus mosseae strain. The second factor of the study included three levels of humic acid, namely 0 (control), 15, and 30 mg L-1. The results showed that with the application of mycorrhiza and humic acid, the number of seeds per plant, seed weight per plant, chlorophyll index, percentage of seed protein content, and nitrogen, phosphorus, and potassium contents of leaves increased. The highest seed weight per plant (13.47 g) was recorded in the red beans treated with 30 mg L-1 of humic acid + Glomus intraradices strain and 13.01 g and 13.72 g in the plants treated with 15 and 30 mg L-1 of humic acid, respectively along with Glomus mosseae strain. Also, the highest percentage of seed protein was 26.15% obtained from the treatment with 30 mg L-1 of humic acid + Glomus intraradices and 25.23% and 27.93% in the treatments with 15 mg L-1 and 30 mg L-1 of humic acid, respectively along with Glomus mosseae. Maximum leaf nitrogen content (5.85%) was obtained from the application of 30 mg L-1 of humic acid with Glomus mosseae. Mycorrhizae and humic acid seem to be able to improve the yield and yield components of red beans by providing nutrients to the plant پرونده مقاله -
دسترسی آزاد مقاله
5 - Effects of sodium nitroprusside and potassium silicate on the growth and flowering of Gazania rigens (L.)
Zahra Nasiri Elham Danaeeشماره 1 , دوره 14 , زمستان 2024Gazania, belongs to the family Asteraceae, is widely grown in gardens and other environments. The purpose of this study was to evaluated the effects of sodium nitroprusside and potassium silicate treatments on the growth and flowering of gazania. For these purposes, a c چکیده کاملGazania, belongs to the family Asteraceae, is widely grown in gardens and other environments. The purpose of this study was to evaluated the effects of sodium nitroprusside and potassium silicate treatments on the growth and flowering of gazania. For these purposes, a completely randomized design was used, with three levels of sodium nitroprusside (SNP) (25, 50 and 100 μM/l), potassium silicate (PS) at the concentration of 25, 50 and 100 mg/l and control. Some important traits such as fresh and dry weight of shoot and root, number of flowers, root volume, longest root length, plant height, cell membrane stability index, petiole carotenoid, leaf chlorophyll, protein, superoxide dismutase (SOD) and peroxidase (POD) enzyme activity and flower longevity. It was observed that plan that shoot fresh/dry weight, flower number, root length, plant height, carotenoid, leaf chlorophyll was increased under 100 mg/l PS treatment. The results suggest that the application of 50 μM/l SNP has favorable effects on the raise root fresh/dry weight, root volume, cell membrane stability index, protein, SOD and POD activity. Over the growth stage, 50 mg/l PS was found to be the best treatment to maintain flower longevity with 7.2 days. پرونده مقاله -
دسترسی آزاد مقاله
6 - The Disparity in the Germination Time of Argan Nuts (Argania spinosa L. Skeels) on the Growth of Their Seedlings in Nurseries
Kaddour MAAMAR KOUADRI Aida SAIFOUNI Kenza BOUBETRA Aissa MIHOUBIشماره 1 , دوره 14 , زمستان 2024The disadvantages encoutered for the multiplication of the Argan tree are the embryonic and integumentary dormancy, which directly affects the rate and the delay of germination, the standards of aggregation of the plants for the reforestation and in parallel on the stay چکیده کاملThe disadvantages encoutered for the multiplication of the Argan tree are the embryonic and integumentary dormancy, which directly affects the rate and the delay of germination, the standards of aggregation of the plants for the reforestation and in parallel on the stay time in the nursery. The study was conducted on Argan tree (Argania spinosa (L) Skeels) seedlings from two types of experimental germination of the kernels in the nursery: one pre-treatment with hot water and the second without pre-treatment (control); the aim is to see the effect of the duration of germination on the growth of the seedlings. The walnuts germinating for a short time gave plants of almost convergent height (varying from 23 to 25 cm), i.e., the average height was very representative and similar to the height of their plants (24.94 cm). On the other hand, walnuts with a long germination period produced seedlings of varying heights (ranging from 09 to 27 cm), with an average height different from their range of seedlings (17.46 cm). Regarding diameter growth, germination time did not affectyoung plants. When the germination period is short, it is possible to obtain homogeneous seedlings that meet phytotechnical standards for reforestation. According to this study, Argan seedlings should not be kept in the nursery for more than 33 weeks (08 months); otherwise, there is a risk of a poorly formed root system. پرونده مقاله -
دسترسی آزاد مقاله
7 - Morpho-physiological and biochemical responses of suger beet cultivars (Beta Vulgaris L.) topretreatment and salinity
Ali Shokouhian Heshmat Omidi Amin Bostani Amirmohammad Najiشماره 1 , دوره 14 , زمستان 2024A plant’s response to osmotic stress is a complex phenomenon that causes many abnormal symptoms due to limitations in growth and development or even the loss of yield. The present study was designed to investigate the morpho-physiological responses of different su چکیده کاملA plant’s response to osmotic stress is a complex phenomenon that causes many abnormal symptoms due to limitations in growth and development or even the loss of yield. The present study was designed to investigate the morpho-physiological responses of different sugar beet cultivars (‘Shokofa’, ‘Sina’, ‘Paya’, ‘Turbata’, and ‘Aria’) to priming (non-priming, osmopriming, and hydro-priming) and salinity of irrigation water (>2, 8, and 16 dS/m). The experiment was conducted as a factorial split plot experimental based on a randomized complete blocks design (RCBD) implemented in three replications in a research farm in Saveh city, Iran, during 2019-2020. Results showed that non-priming of ‘Shokofa’ genotype, hydro-priming of ‘Aria’ genotype, and osmo-priming of ‘Paya’ genotype under non-salinity conditions had the highest total chlorophyll content (31.04, 32.80, and 28.50 µg/g FW, respectively). The highest proline content was related to the hydro-and osmo-priming of seeds under high salinity stress (1.91 and 1.23 μmol/g FW, respectively). Hydro-priming of ‘Shokofa’ seed showed the highest LAI under the high salt stress level. The highest root yield (62.9 tons/ha) was observed in the hydro-priming of ‘Aria’ genotype under without salt stress conditions. In addition, all sugar beet cultivars under non-stress and hydro-priming conditions had the highest root yield. Among the cultivars, ‘Sina’, ‘Torbata’, and ‘Aria’ and hydro-priming technique are recommended for planting in areas under soil or irrigation water salinity stress پرونده مقاله -
دسترسی آزاد مقاله
8 - Combining ability and gene action studies for drought tolerance in tomato
Maryam Noori Alireza Motallebi Azar Jaber Panahandeh Mehdi Saidi Ali Akbar Asadi Davoud ZareHaghi Shahnaz Fathiشماره 1 , دوره 14 , زمستان 2024Physiological traits of tomato including its resistance to stresses are a main breeding goal in producing new cultivars. This study reports on a combining ability analysis investigating the variance of general and specified combing abilities for some important physiolog چکیده کاملPhysiological traits of tomato including its resistance to stresses are a main breeding goal in producing new cultivars. This study reports on a combining ability analysis investigating the variance of general and specified combing abilities for some important physiological characteristics as a whole as well as their effects for individual parents and hybrids of 19 tomato genotypes of tomato under drought stress. Three commercial innate lines and four analyzers were used in a line-to-tester crossing plan at Ilam University, Iran. There was a significant difference between genotypes (parents and crosses) in all characteristics at three levels of stress. Evaluating the impacts of common combining capacity analyzers and lines showed that neither a single line nor an analyzer was a commendable common combiner for all of the characteristics examined at all three push levels. Estimation of the effects of specific combining ability indicated that for each specific physiological trait, a specific hybrid showed the highest effect at all three stress levels. In all of the traits under study, specific combining ability variance had a higher estimation than general combining ability variance, and the genetic variance ratio of additive variance to non-additive variance was smaller than one, indicating that non-additive gene action predominated in the inheritance of all of the characteristics in the three levels of stress. The degree of dominance under three levels of stress was higher than one for all attributes except total soluble solids, and it seems that dominance in the genetic locations controlling these traits is superseded. پرونده مقاله -
دسترسی آزاد مقاله
9 - Noncorrelation between Growth and Zerumbone Production in Zingiber zerumbet Smith
Nurul Alwakil Mahanom Jalil Boon Chin Tan MOHAMAD SUFFIAN MOHAMAD ANNUAR Norzulaani Khalidشماره 1 , دوره 14 , زمستان 2024Root cultures were established through adventitious roots obtained either from direct or indirect organogenesis. The frequency of root response, number of roots per explant, root length, and zerumbone production were influenced by the concentrations and the types of aux چکیده کاملRoot cultures were established through adventitious roots obtained either from direct or indirect organogenesis. The frequency of root response, number of roots per explant, root length, and zerumbone production were influenced by the concentrations and the types of auxins, initial root inoculum and the strength of the basic Murashige and Skoog (MS) salt in the culture media. It was crucial to decide the type of root explant and optimum media that supported both growth and bioactive compound production in the root cultures. In our study, we found that there was a noncorrelation in the optimised media for growth and zerumbone production in the root cultures of medicinal ginger Zingiber zerumbet Smith. Full strength (MS) medium was the optimum media for specific growth rates whereas zerumbone accumulation was higher in half strength MS medium for adventitious roots from direct (AdRD) and indirect (AdRId) organogenesis. AdRD was chosen over AdRId although the specific growth rate achieved was higher in the latter (7.2 x 10-2µ) than the former (5.5 x 10-2µ) based on the zerumbone accumulation performance. Subsequently, these AdRD root cultures were elicitated with methyl jasmonate which showed ten-folds increase in zerumbone production than the controls. This study could provide a scalable protocol for the production of zerumbone from adventitious root culture in the future. پرونده مقاله -
دسترسی آزاد مقاله
10 - The role of education in environmental protection
AZam Nikokarشماره 1 , دوره 14 , زمستان 2024• Survival of humans and improvement of their standard of living require an awareness of the role of environment, acknowledgement of its importance in our lives, and development of a positive attitude to preserve and improve its quality. • In order to protect or rec چکیده کامل• Survival of humans and improvement of their standard of living require an awareness of the role of environment, acknowledgement of its importance in our lives, and development of a positive attitude to preserve and improve its quality. • In order to protect or reconstruct the environment, first of all, human groups need to be trained. • Environmental education can strengthen a culture of responsibility towards protection of both immediate environment and the entire planet, which is necessary for sustainable development. • The purpose of environmental education is to raise individuals who are aware of environmental issues and to create a sense of responsibility in them to protect and support the environment. • Rather than an attempt to increase theoretical knowledge in its audience, environmental education needs to aim at empowering people to identify environmental issues, critically analyze them, explore the viable solutions, and actually contribute in solving them. • Environmentally educated citizens are environmentalist partners that can inform their families about environmental issues and transfer their experiences to the family environment. • With an environment protection orientation and internalized sensitivity to preserve the environment, the next fathers and mothers will then transmit the green mindset to the subsequent generation. پرونده مقاله
پربازدیدترین مقالات
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دسترسی آزاد مقاله
1 - Toxicity of pesticides to plants and non-target organism: A comprehensive review
Aisha Kamal Farhan Ahmad Mohd Shafeequeشماره 4 , دوره 10 , پاییز 2020AbstractPesticides are agrochemical used to increase agronomic production and higher economic profit. However, these chemical pesticides could be persistent in soil and water, collective in silt or bio-aggregates in biota relying upon their dissolvability, prompting var چکیده کاملAbstractPesticides are agrochemical used to increase agronomic production and higher economic profit. However, these chemical pesticides could be persistent in soil and water, collective in silt or bio-aggregates in biota relying upon their dissolvability, prompting various kinds of natural contamination. These pesticides have also shown detrimental effects such as phytotoxicity, genotoxicity, and cytotoxicity on targets plant along with alteration in the antioxidant system. The demerits continue as they also affect non-target species such as humans, birds, animals, and other aquatic organisms. The higher accumulations of pesticides are also responsible for the generation of ROS that leads to oxidative stress and finally cell demise. Thus, in this review, the toxicity of pesticides will be discussed in detail at a cellular and molecular level linked with the response of the plant defense system. Besides this, various strategies that have been commonly used worldwide to remediate the toxicity have also been highlighted in the later section. The study will facilitate plant researcher and chemical engineer to understand the gap between the research and a novel, innovative and cost-effective technique/ procedure will be outlined for healthy environments پرونده مقاله -
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2 - Monitoring Growth and Physiological Responses of Satureja hortensis L. to Music and Noise Stimulation
Setareh Azgomi Alireza IranBakhsh Ahmad Majd Mostafa Ebadi Zahra Oraghi Ardebiliشماره 5 , دوره 11 , زمستان 2021This research attempted to gain a better view of music/sound interaction with the plant systems. Savory (Satureja hortensis L.) seedlings were exposed to the diverse sound treatments, including a piece of Iranian Music (IM), an electro-industrial Rock Music (RM), and Ur چکیده کاملThis research attempted to gain a better view of music/sound interaction with the plant systems. Savory (Satureja hortensis L.) seedlings were exposed to the diverse sound treatments, including a piece of Iranian Music (IM), an electro-industrial Rock Music (RM), and Urban/Traffic Noise (UTN). The frequencies of IM, RM, and UTN ranged in 800–2000, 1100–7000, and 800–2000 Hz, respectively. The exposure time was three times a day for 45 minutes during two weeks. The applied treatments enhanced shoot dry weight by an average of 55.25% over the control. The IM treatment was the most effective way to improve stem length. The most root length was observed in RM-treated seedlings (mean=2.3–folds). Root dry weight in IM and RM treatments increased by an average 64.39% and 78% respectively. Appling music also augmented the concentrations of chlorophyll pigments approximately by 32%. Moreover, carotenoid content displayed a similar increasing trend (mean=36.5%). Likewise, the applied music and sound treatments upregulated the activities of peroxidase (mean=51.33%) and catalase (mean=21.27%) enzymes, implying stimulation in the enzymatic antioxidant system. However, the amount of total sugar adversely influenced by the treatments (mean=30%). The exposure to UTN was associated with a moderate increase in the proline concentration by a mean of 66% whereas, the music treatments exhibited less increase in this parameter. These findings support the view that both music and sound not only affect plant growth programs but also influence diverse biological processes. پرونده مقاله -
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3 - Plant growth promoting rhizobacteria (PGPR) improve plant growth, antioxidant capacity, and essential oil properties of lemongrass (Cymbopogon citratus) under water stress
Mitra Mirzaei Alireza Ladan Moghadam Leila Hakimi Elham Danaeeشماره 2 , دوره 10 , بهار 2020Among abiotic stresses, drought is considered as the most important growth limiting factor, especially in arid and semiarid regions. Drought impacts can be adjusted by soil microorganisms. Accordingly, the present study was organized in order to the increase the toleran چکیده کاملAmong abiotic stresses, drought is considered as the most important growth limiting factor, especially in arid and semiarid regions. Drought impacts can be adjusted by soil microorganisms. Accordingly, the present study was organized in order to the increase the tolerance of lemongrass (Cymbopogon citratus)to drought using plant growth promoting rhizobacteria (PGPR). Treatments were water stress in four levels (100% field capacity (FC), 75% FC, 50% FC, and 25% FC) and inoculation by PGPR in three levels (uninoculated, inoculated with pseudomonas sp ., andinoculated with Azotobacter sp .). Water stress significantly decreased chlorophyll content.Compared to control, severe stress decreased Chlorophylle a+b by 36%. The maximum proline content was accumulated in plants under severe stress and PGPR application. Catalase (CAT) and super oxide dismutase (SOD) activities were increased by 77% and 71%, respectively under severe stress compared to the well-watered condition. The highest total phenol content (TPC) was obtained in the interaction of 50% FC and PGPR application. Moreover, 50% FC induced the maximum total flavonoid content (TFC) by 42% compared to 100% FC. Pseudomonas and Azotobacter increased the TFC by 6% and 18%, respectively in comparison with uninoculated plants. Essential oil (EO) content and yield were increased under 75% FC, and decreased under 50% and 25% FC. EO percentage in 75% FC and PGPR application was higher than other treatments. Under 75% FC, 14% increase in EO yield was reported for both Pseudomonas and Azotobacter application. To sum up, PGPR can improve the plant growth and EO properties by increasing antioxidant capacity of lemongrass. پرونده مقاله -
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4 - Comparison between antioxidant activity and bioactive compounds of Ganoderma applanatum (Pers.) Pat. and Ganoderma lucidum (Curt.) P. Karst from Iran
Shamameh Mohammadifar Syamak Fallahi Gharaghoz Mohammad Reza Asef Shayan Atousa Vaziriشماره 1 , دوره 11 , زمستان 2020Members of Ganoderma genus, belong to Basidiomycota, such as Ganoderma applanatum and Ganoderma lucidum have been noticed in traditional and modern medicine and pharmacology for their medicinal properties and bioactive compounds. The present study is undertaken to deter چکیده کاملMembers of Ganoderma genus, belong to Basidiomycota, such as Ganoderma applanatum and Ganoderma lucidum have been noticed in traditional and modern medicine and pharmacology for their medicinal properties and bioactive compounds. The present study is undertaken to determine whether there is difference between chemical properties of G. applanatum and G. lucidum. The fresh mature fruiting bodies of fungi growing on common hornbeam (Carpinus betulus), were collected in Neka, a county in Mazandaran Province, Iran, and their antioxidant activity and bioactive compounds content were examined by spectrophotometer and HPLC method. According to the chemical analysis, the total phenols and flavonoids content, betulinic acid and also antioxidant activity measured by DPPH radical scavenging and FRAP methods in G. applanatum were higher than the other, but G. lucidum had higher content of total polysaccharides and proteins. Also the two other terpenoids (oleanolic acid and ursolic acid) were very low in these two fungi. پرونده مقاله -
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5 - Stress response in cyanobacteria
Maryam Rezayian Vahid Niknam Hassan Ebrahimzadehشماره 3 , دوره 9 , تابستان 2019Cyanobacteria are an important source of natural products. In this article, we briefly review the responses of cyanobacteria to different stresses. Abiotic stresses (temperature, salt, heavy metals, metalloid and ultraviolet (UV) influence cell growth and metabolism in چکیده کاملCyanobacteria are an important source of natural products. In this article, we briefly review the responses of cyanobacteria to different stresses. Abiotic stresses (temperature, salt, heavy metals, metalloid and ultraviolet (UV) influence cell growth and metabolism in cyanobacteria. Salt stress is a major abiotic factor that decreases the growth of cyanobacteria and affects the different processes including photosynthesis, respiration, and metabolism. The basic mechanisms for salinity adaptation include the active extrusion of inorganic ions and the accumulation of compatible solutes such as sucrose, trehalose, glucosyl glycerol, and glycine betaine. Cyanobacteria have a complex antioxidative system including enzymatic and nonenzymatic antioxidants for mitigation of oxidative damage under salt stress. Cyanobacteria have some defense mechanisms for the decline of the direct and indirect destructive effects of UV. These mechanisms include avoidance, scavenging of reactive oxygen species (ROS), synthesis of UV-absorbing/screening compounds such as mycosporine-like amino acids and scytonemin, repair of UV-induced damage in DNA, and resynthesis of proteins. Metals are involved in key metabolic pathways as redox cofactors in proteins. High concentration of metals causes the generation of ROS and oxidative damage. Thus, the major role of metal homeostasis in maintaining the intracellular concentration of metal within a range compatible with cell viability becomes evident. The biosynthesis of metabolites can be triggered by a number of abiotic stresses because they affect metabolic pathways. پرونده مقاله -
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6 - Effect of SiO2 nanoparticles on phytochemical and anatomical alterations in Anthemis gilanica
Halimeh Hassanpour Nastaran Ahmadi Malak Hekmati Mahbobeh Ghanbarzadehشماره 3 , دوره 10 , تابستان 2020In this research, effects of SiO2 nanoparticles (NPs) on the growth, antioxidant properties, and phenolic and flavonoid contents were investigated in Anthemis gilanica plants from the Asteraceae family. Following seed germination, seedlings were cultured under Hoagland چکیده کاملIn this research, effects of SiO2 nanoparticles (NPs) on the growth, antioxidant properties, and phenolic and flavonoid contents were investigated in Anthemis gilanica plants from the Asteraceae family. Following seed germination, seedlings were cultured under Hoagland growth media and were treated with different concentrations of SiO2NPs (0, 2, 4, 6 and 8 g L-1). The results showed that SiO2 NPs significantly enhanced relative water content (RWC), dry and fresh weights, and shoot length especially at 4 g L-1, but decreased root length with increasing concentrations of NPs. Xylem number and size, and stele diameter increased up to 6 g L-1, and then decreased at higher concentration. Total phenol and flavonoid contents increased under different concentrations of SiO2 NPs, and the maximum content was observed at 6 g L-1. Moreover, SiO2 NPs increased antioxidant activity of extracts by reducing IC50 content especially at 6 g L-1. In conclusion, this study proposes that SiO2 NPs can improve growth and bioactive compounds in A. gilanica by induction of anatomical alterations. پرونده مقاله -
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7 - In vitro propagation of orchid Phalaenopsis amabilis (L.) Blume var. Jawa
Mozhdeh Asa Behzad Kavianiشماره 2 , دوره 10 , بهار 2020A protocol was developed for high frequency in vitro multiplication of an ornamental orchid, Phalaenopsis amabilis (L.) Blume var. Jawa, using plant growth regulators (PGRs). Protocorm-like bodies (PLBs), as explants were cultured on Murashige and Skoog (MS) medium fort چکیده کاملA protocol was developed for high frequency in vitro multiplication of an ornamental orchid, Phalaenopsis amabilis (L.) Blume var. Jawa, using plant growth regulators (PGRs). Protocorm-like bodies (PLBs), as explants were cultured on Murashige and Skoog (MS) medium fortified with various concentrations of kinetin (KIN) and indole-3-butyric acid (IBA), either individually or in combination. A combination of 1.00 mg l-1 KIN + 1.00 mg l-1 IBA was found to be suitable for regeneration of most measured characteristics especially maximum PLBs regeneration (30.40/plantlet), leaf number (5.93/plantlet), and root number (8.36/plantlet) from protocorm explants. The maximum number of plantlets (11.66) was calculated on MS medium supplemented with 1.00 mg l-1 KIN + 0.50 mg l-1 IBA, followed by 1.00 mg l-1 KIN + 1.00 mg l-1 IBA (10.33). Plantlets were transplanted to pots filled with cocochips and sphagnum moss (70:30) for acclimatization and transferred to the greenhouse. Upon ex vitro transfer, 90% of plants survived. پرونده مقاله -
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8 - Micropropagation of Phalaenopsis circus via direct organogenesis using protocorm-like bodies explant
Hasan Kiaheirati Davood Hashemabadi Behzad Kavianiشماره 1 , دوره 13 , زمستان 2023Phalaenopsis orchid has high economic value in the floriculture industry and is one of the most popular orchids in the world. Tissue culture techniques makes it possible to propagate and conserve this species. The aim of the present study was to evaluate the effect of d چکیده کاملPhalaenopsis orchid has high economic value in the floriculture industry and is one of the most popular orchids in the world. Tissue culture techniques makes it possible to propagate and conserve this species. The aim of the present study was to evaluate the effect of different concentrations of two plant growth regulators (PGRs), namely N-Phenyl-N′-1,2,3-thiadiazol-5-yl-urea (TDZ) and 2,4-dichlorophenoxyacetic acid (2,4-D), alone and in combination with each other, on the number of protocorm-like bodies (PLBs), leaves, and roots, along with leaf and root lengths of micropropagated Phalaenopsis circus using leaf explants through organogenesis method. Also, correlations between these traits in the Phalaenopsis circus plantlets under study were calculated. Plantlets produced from PLBs were cultured on MS (Murashige and Skoog) basal media enriched with various levels and combinations of TDZ and 2,4-D. The optimal concentrations of the PGRs for micropropagation of Phalaenopsis circus are reported and discussed. The maximum number of PLBs (75.00) was obtained on the medium enriched with 1.00 mg l–1 2,4-D. The highest length of leaf (5.23 cm) was calculated on the medium enriched with 2.00 mg l–1 2,4-D. Concentration of 1.00 mg l–1 TDZ induced the maximum number (6.07) of leaf. The longest root length (4.15 cm) and the largest number of root (4.93) was obtained in medium augmented with 2.00 mg l–1 2,4-D. پرونده مقاله -
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9 - Differential responses of phenolic compounds of Brassica napus under drought stress.
Maryam Rezayian Vahid Niknam Hassan Ebrahimzadehشماره 3 , دوره 8 , تابستان 2018This work evaluated the effect of drought stress on seedling growth, protein, soluble sugars, and phenolic compounds of two cultivars of canola (RGS003 and Sarigol). Drought stress was induced with polyethylene glycol (PEG) at 0, 5, 10, and 15%. Drought stress increased چکیده کاملThis work evaluated the effect of drought stress on seedling growth, protein, soluble sugars, and phenolic compounds of two cultivars of canola (RGS003 and Sarigol). Drought stress was induced with polyethylene glycol (PEG) at 0, 5, 10, and 15%. Drought stress increased root fresh weight in both cultivars and the effect of drought was more pronounced in RGS003. Shoot fresh weight reduced in Sarigol at 10 and 15% of PEG. Drought stress significantly increased seedling fresh weight in RGS003. Sarigol accumulated higher amounts of protein as compared to RGS003. At all PEG concentrations, the soluble sugars contentwas higher in Sarigol as compared to control. Total phenol content was enhanced at higher drought level (15%) while flavonol content increased at lower level (5%) in both cultivars. Phenylalanine ammonia-lyase (PAL) activity and its relative expression were increasedin RGS003 at 10% of PEG. Overall, RGS003 cultivar had more capacity to tolerate drought stress than Sarigol cultivar.. پرونده مقاله -
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10 - Salicylic acid and boric acid improve flower growth, yield, and cold tolerance in French marigold (Tagetes patula)
Toktam Moradian Rahele Ghanbari Moheb Seraj Ahmad Asgharzadeشماره 4 , دوره 13 , پاییز 2023A decrease in air temperature harms many ornamental plants, especially flowers grown in green space. To prevent cold stress, various elicitors are used that reduce the harmful effects of low temperature. Therefore, in this study, we investigated the impact of two elicit چکیده کاملA decrease in air temperature harms many ornamental plants, especially flowers grown in green space. To prevent cold stress, various elicitors are used that reduce the harmful effects of low temperature. Therefore, in this study, we investigated the impact of two elicitor's salicylic acid and boric acid on the growth and yield parameters of French marigold (Tagetes patula). Next, these plants were exposed to cold stress, and their physiological and morphological traits were also studied. Results showed that the application of elicitors, especially in higher concentrations, had a positive effect on morphological and physiological traits. Interaction of SA×BA with a concentration of 2mM, increased flower diameter (20%), stem height (19%), stem and root fresh weight (27 and 35% respectively), stem and root dry weight (31 and 39% respectively), and flower quality (26%). Also, the interaction of these two elicitors led to a decrease in ion leakage (22%), malondialdehyde (28%), and proline (24%) content, and an increase in chlorophyll fluorescence (28%), catalase (20%) and ascorbate peroxidase (33%) activity. In general, the application of salicylic acid and boric acid interaction treatment with 2mM concentration improved growth and yield characteristics and cold stress tolerance in French marigold. پرونده مقاله