Leila Hakimi Articles List

List of Articles Leila Hakimi

Open Access Article
- Abstract Page
- Full-Text
1 - The effects of glycine betaine and L-arginine on biochemical properties of pot marigold (calendula ofﬁcinalis L.) under water stress
Fatemeh Sadat Feiz Leila Hakimi Amir Mousavi Marzieh Ghanbari Jahromi
10.30495/ijpp.2019.667133

Pot marigold (Calendula ofﬁcinalis L.) is widely used due to its various biological activities to treat diseases as an analgesic, anti-diabetic, anti-ulcer and anti-inflammatory agent. To ameliorate the adverse effects of water stress on this medicinal plant, foliar app More

Pot marigold (Calendula ofﬁcinalis L.) is widely used due to its various biological activities to treat diseases as an analgesic, anti-diabetic, anti-ulcer and anti-inflammatory agent. To ameliorate the adverse effects of water stress on this medicinal plant, foliar application of glycine betaine (GB) and L-arginine (LA) was used. For this purpose, water stress was applied at three levels (100%, 70% , and 40% field capacity (FC)), and foliar application was used at five levels (control, 50 mM GB, 100 mM GB, 1.5 mM LA, and 3 mM LA) as factorial based on completely randomized design. We measured phenol and flavonoid content, DPPH radical scavenging activity, superoxide dismutase (SOD) and phenylalanine ammonia-lyase (PAL) activity, and essential oil (EO) content and yield. Total phenol content in the interaction of 40% FC and GB 100 mM was higher than the other treatments. The highest and lowest total flavonoid content and DPPH radical scavenging activity were observed in the interaction of 40% FC and 100% FC, respectively. These variables at GB 100 mM were greater than the others. The highest SOD and PAL activity was found in the interaction of 40% FC and LA 3 mM/GB 100 mM. The content and yield of EO in the interaction of 70% FC and 100 mM GB were greater than other treatments. In sum, 70% of water stress did not significantly change the biochemical properties of C. ofﬁcinalis, but 40% FC dramatically influenced the quality of the plant. GB 100 mM could stimulate the plant to activate its antioxidant systems under water stress and obtain the highest EO. Manuscript profile
Open Access Article
- Abstract Page
- Full-Text
2 - Medicinal pumpkin responses to Thiobacillus and sulfur under water stress.
Sadegh Masoodi Leila Hakimi
10.30495/ijpp.2017.537983

The present study aims to assess the effect of Thiobacillus and sulfur on morphological and biochemical properties of medicinal pumpkinproperties under deficit irrigation based on a split-plot design. For this purpose, water stress was applied as a main factor in three More

The present study aims to assess the effect of Thiobacillus and sulfur on morphological and biochemical properties of medicinal pumpkinproperties under deficit irrigation based on a split-plot design. For this purpose, water stress was applied as a main factor in three levels (control, no irrigation in flowering stage, no irrigation in fruiting), and Thiobacillus and sulfur fertilizers as sub-plots (250 kg/ha). The results revealed water stress significantly reduced stem diameter, fruit weight, fruit yield, and 1000-seed weight. In contrast, Thiobacillus + sulfur significantly increased fruit weight, fruit yield, 1000-seed weight, seed yield, and oil content. Furthermore, deficit irrigation and fertilizers influenced fatty acid of medicinal pumpkin. The interaction of fertilizer and deficit irrigation was significant on all seed oil compositions, fruit weight and yield as well as seed weight and yield. The fatty acid profile of the oil showed that it is composed primarily of oleic, linoleic, palmitic, stearic, and linolenic acids. Manuscript profile
Open Access Article
- Abstract Page
- Full-Text
3 - Peroxide isozymes and Malondialdehyde content and ascorbate peroxidase activity in Berberis integerrima and Cercis siliquastrum under Cd-induced stress .
Leila Hakimi Esmail Khosropour
10.30495/ijpp.2015.539651

ROS detoxification is an essential process in protecting plant cells and their organelles, which is caused by ROS generated in stress condition. Peroxidase (POD) isozyme, Malondialdehyde (MDA) content, and Ascorbate peroxidase (APX) activity are the indicators of plants More

ROS detoxification is an essential process in protecting plant cells and their organelles, which is caused by ROS generated in stress condition. Peroxidase (POD) isozyme, Malondialdehyde (MDA) content, and Ascorbate peroxidase (APX) activity are the indicators of plants for measuring pollution effects. The purpose of the present study was to investigate Cd-induced stress on POD isozymes, MDA content, and APX activity in seedlings of Berberis integerrima and Cercis siliquastrum. 100 seedlings were treated with cadmium chloride separately at concentrations of 0, 1000, 2000, 4000, 6000 mg/kg three times at intervals of 15 days. POD activity varied at different levels of Cd stress Cercis siliquastrum, while this was not the case with Berberis integerrima. MDA was slightly increased up to 6000 mg/kg from 5% to 27%, but a sharp increase (41%) was found at 6000 mg/kg compared with 4000 mg/kg Cd treatment in Cercis siliquastrum. The highest MDA content (10.5 µM/ g FW) was recorded at 6000 mg/kg trearment in Berberis integerrima, while the lowest value (2.3 µM/ g FW)was found in control Cercis siliquastrum plants. The maximum and minimum APX activity were found in the treatments of 6000 mg/kg (0.13 unit/mg protein) and control (0.02 unit/mg protein), respectively, for both Cercis siliquastrum and Berberis integerrima. In control Berberis integerrima, APX activity (0.02 unit/mg protein) was higher than that of Cercis siliquastrum (0.006 unit/mg protein) (p ˂ 0.05). Overall, the findings suggest that Berberis integerrima is less tolerant than Cercis siliquastrum under Cd-induced stress. Manuscript profile

Current Issue

Published Issues

Menu

Browse

List of Articles Leila Hakimi