Roles of Plant Growth Promoting Bacteria on Plant Growth under Drought Stress
Keywords:
drought stress, economic crops, plant growth promoting bacteriaAbstract
Drought is important agricultural problem because this affected on several plant growth and decreased crop yield. There are several abnormal functions of plant under drought condition, such as respiration, photosynthesis, and oxidation stress. Also, there are several plant adaptations for survival under drought condition, such as transpiration control, osmotic pressure adjusting, the accumulation of osmotic protectant, free radical resistance, and plant growth regulator use. Moreover, plant growth promoting bacteria could increase plant growth under drought condition. In this article, the plant growth and plant adaptation under drought condition and use of plant growth promoting bacteria to alleviated plant stress from drought were described in detail. The mechanisms that these bacteria use were ACC deaminase production, indole-3-acetic acid (IAA) production, osmoregulation, exopolysaccharide production and increase nutrient uptake under stress condition.
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