Drought stress restricts the growth of okra (Abelmoschus esculentus L.) by disrupting its biochemical and physiological functions. The current study was conducted to evaluate role selenium (0, 1, 2, 3 mg Se L−1 as a foliar application) in improving tolerance drought (control (100% field capacity-FC), mild (70% FC), severe (35% FC)) imposed 30 days after sowing (DAS). (severe) markedly decreased...

The chlorophyte microalga Chlorella sorokiniana was tested for the bioremediation of heavy metals pollution. It cultured with different concentrations Cu2+, Cd2+, As (III) and (V), showing a significant inhibition on its growth at 500 µM 250 750 AsO33- 5 mM AsO43- or higher. Moreover, consumption ammonium also studied, differences higher than 1 Cu2+ (III), (V). determination intracellular conce...

Cesium (Cs) is a soil contaminant and toxic to the ecosystem, especially plant species. In this study, we have assessed potential of halophyte Sesuvium portulacastrum for its Cs tolerance accumulation. Thirty days old S. plants were subjected different concentrations (0, 5, 10, 25, 50, 150 mg·L−1 Cs) using cesium chloride. The biomass photosynthetic pigments not affected up 25 treatment while s...

Heat shock proteins (HSPs) play important roles in various stress conditions. In this study, CmHSP90.5, whose expression is induced by heat and salt, was cloned from a chrysanthemum (Chrysanthemum morifolium) ‘Jinba’ expressed Arabidopsis. We found that CmHSP90.5 localized the chloroplast. The heterologous of weakened tolerance Arabidopsis reduced activity antioxidant enzymes, including superox...

to find the protective role of exogenous nitric oxide (no) on salinity-stressed rice seedlings, a crd-based factorial experiment with three replications was conducted in agronomy laboratory of the faculty of agricultural sciences, university of guilan, in 2012. the experimental design consisted of healthy and vigorous seedlings of two rice cultivars, khazar and goohar, the last already known as...

Here, we review information on how plants face redox imbalance caused by climate change, and focus on the role of nitric oxide (NO) in this response. Life on Earth is possible thanks to greenhouse effect. Without it, temperature on Earth's surface would be around -19°C, instead of the current average of 14°C. Greenhouse effect is produced by greenhouse gasses (GHG) like water vapor, carbon diox...

In order to investigate the effect of seed inoculation with Plant Growth Promoting Rhizobactria (PGPR) on germination and some biochemical and physiological indices of Cumin (Cuminum cyminum L.) under salinity stress, an experiment was conducted. Experimental factors were included in seed priming in five levels (seed inoculation with three strains of Pf2, Pf25 and CHA0 of Pseudomonas fluorescen...

In order to study the effect of melon powdery mildew on physiological indexes different varieties, high resistant variety ‘16-6’, medium ‘04-38’, and highly susceptible ‘15B-42’ were used as materials. The activities antioxidant defense system enzymes, contents of malondialdehyde (MDA), soluble protein chlorophyll, photosynthetic indicators in leave...

the aim followed in this study was to compare the performance of multiple regression vs neural network models to predict the activity of antioxidant enzymes super oxide dismutase (sod), cat alase (cat), ascorbate pero xidase (apx) and peroxidase (pox) in the shoots of wheat (triticum aestivum), alvand cultivar in a soil polluted with cadmium. the treatments consisted of four levels of cadmium (...