TY - JOUR T1 - The Role of Bacteria to Cope with Abiotic Stresses in Plants TT - نقش باکتری‌ها در مقابله با تنش‌های غیرزنده در گیاهان JF - yu-pps JO - yu-pps VL - 3 IS - 2 UR - http://yujs.yu.ac.ir/pps/article-1-93-en.html Y1 - 2014 SP - 44 EP - 55 KW - Bacterium KW - Stress KW - Drought KW - Salinity KW - Pseudomonas N2 - Abiotic stresses are major environmental factors that affect agricultural productivity worldwide. Depending on the crop, the yield losses associated with abiotic stresses can reach 50 to 82 percent. Extreme temperatures, drought, salinity, flooding, freezing, ultraviolet light, heavy metals, nutrient deficiency, unsuitable pH, air pollutants and mechanical damage are the most basic stressors. Because biotic stresses cause metabolic toxicity, membrane degradation, reduction of photosynthesis, decrease of nutrient uptake, changes in levels of phytohormones and ultimately affect the plant growth and its productivity, therefore reducing the effect of these stresses, is essential. Plant growth promoting rhizobacteria play an important role in plant disease management and have a high potential in alleviation the abiotic stresses. M3 ER -