Leaf hydraulic vulnerability triggers the decline in stomatal and mesophyll conductance during drought in rice.

ABSTRACT: Understanding the physiological responses of crops to drought is important for ensuring sustained crop productivity under climate change, which is expected to exacerbate the frequency and intensity of periods of drought. Drought responses involve multiple traits, and the correlations between these traits are poorly understood. Using a variety of techniques, we estimated the changes in gas exchange, leaf hydraulic conductance, and leaf turgor in rice (Oryza sativa) in response to both short- and long-term soil drought. We performed a photosynthetic limitation analysis to quantify the contributions of each limiting factor to the resultant overall decrease in photosynthesis during drought. Biomass, leaf area, and leaf width significantly decreased during the 2-week drought treatment, but leaf

SUBMITTER: Wang X 

PROVIDER: S-EPMC6054168 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature