The Physiological Response of Populus alba to Drought Stress
[Objective]In this study,Populus alba was used to detect the effect of drought stress on growth and development,which provided reference for the molecular mechanism of the response to drought stress in woody.[Method]The seedlings of Populus alba about five weeks were treated with drought stress,the growth state and drought stress-related physiological indicators and genes were record and de-tected to reveal the resistance of Populus alba to drought stress.[Result]The results showed that the wa-ter content of leaves decreased significantly and stomatal aperture became smaller after 8 days of drought treatment;meanwhile ROS increased significantly,ABA accumulated in the body,and the growth-related hormone IAA content decreased,drought stress-related genes were upregulated.[Conclusion]By detect-ing the tolerance of Populus alba to drought stress from multiple perspective,the growth of their seedlings is significantly inhibited after drought treatment for 8 days,which indicates that watering timely is neces-sary.
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