List of Articles Parus

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  1 - Bio-remediation of sulfuric compounds from the ceramic wastewater using indigenous bacteria and Thiobacillus thioparus
  Mahtab Taherian Fatemeh Ardestani Mehdi Parvini
  Background & Objectives: Sulfide compounds of ceramic industries wastewater cause water pollution as well as plants and aquatic destruction.  This study was aimed to evaluate sulfide compounds removal from ceramic industries wastewater by Thiobacillus thioparus More

  Background & Objectives: Sulfide compounds of ceramic industries wastewater cause water pollution as well as plants and aquatic destruction.  This study was aimed to evaluate sulfide compounds removal from ceramic industries wastewater by Thiobacillus thioparus and indigenous wastewater bacterial isolates.   Materials & Methods: Indigenous bacterial strains were proliferated at pH of  7, the temperature of 25oC, agitation speed of 200 rpm and an aeration rate of 100 mL min-1 in a 2 L bioreactor for 15 consecutive cycles. Sulfide compounds removal function of T. thioparus and indigenous bacterial strains along with the effect of pH and initial sulfide concentrations were investigated.   Results: The results showed a thiosulfate removal rate of 250 mg sulfide L-1 h-1, a thiosulfate conversion percentage of 100% and a thiosulfate oxidation time of 44 min following 8 consecutive cycles. The sulfide removal rate of T. thioparus and ceramic wastewater indigenous bacteria was obtained as 246.5 and 276.5 mg sulfide L-1 h-1, respectively. Sulfide removal rate by proliferated bacteria decreased from 250 at pH of 7 to 230 and 180 mg sulfide L-1 h-1 at pH of 8 and 9, respectively. Bacterial isolates had an acceptable function in sulfide concentration of 3000 mg L-1, as well. Sulfide removal ability of T. thioparus isolates was decreased by 2.5 and 4 folds, when pH changed from 7 to 8 and 9, respectively. This bacterial strain was not able to tolerate high sulfide concentrations.   Conclusion: The results showed that bacteria isolated from ceramic industries wastewater have a higher capability of sulfide compounds removal as compared to T. thioparus isolates.    Manuscript profile
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  2 - Evaluation of methyl jasmonate application in some traits of two strawberry cultivars (Queen Eliza and Paros) under salinity conditions
  abolfazl lolaei SEDIGHE zamani Shokoufeh Moshfeghifar
  Soil salinity is one of the factors that can put farmers at risk, so special arrangements should be made in this regard. Identifying some physiological mechanisms in strawberry plants is essential in the face of salinity. Methyl jasmonate is a plant growth regulator tha More

  Soil salinity is one of the factors that can put farmers at risk, so special arrangements should be made in this regard. Identifying some physiological mechanisms in strawberry plants is essential in the face of salinity. Methyl jasmonate is a plant growth regulator that affects many biochemical and physiological processes of the plant. . The experiment was a factorial based on randomized complete block design with three replications in 3 treatments and 378 plants with different concentrations of methyl jasmonate (0, 1, 2 μm) under salinity stress conditions with levels of 0, 5 and 10 Decimens) on some morphological responses (plant height, leaf area, dry weight and plant weight) and physiological (soluble solids, vitamin C and acidity) and yield (number of fruits, fruit weight and fruit yield) in the year 2018-2019 in the city of Azad Shahr, Golestan province, in two cultivars of Fragaria × Ananassa Duch., Queen Eliza and Parus strawberries. The results of this study showed that salinity stress significantly reduced the morphological and physiological properties of two strawberry cultivars Queen Eliza and Parus. Quantitative properties of plant height, leaf area, dry weight of plant, and qualitative properties of soluble material, vitamin C and acidity decreased with increasing salinity and with the effect of methyl jasmonate significantly increased vegetative and reproductive growth. Manuscript profile