Challenging the water stress index concept: Thermographic assessment of Arabidopsis transpiration.

ABSTRACT: Water stress may greatly limit plant functionality and growth. Stomatal closure and consequently reduced transpiration are considered as early and sensitive plant responses to drought and salinity stress. An important consequence of stomatal closure under water stress is the rise of leaf temperature (T_leaf ), yet T_leaf is not only fluctuating with stomatal closure. It is regulated by several plant parameters and environmental factors. Thermal imaging and different stress indices, incorporating actual leaf/crop temperature and reference temperatures, were developed in previous studies toward normalizing for effects unassociated to water stress on T_leaf , aiming at a more efficient water stress assessment. The concept of stress indices has not been extensivel

SUBMITTER: Savvides AM 

PROVIDER: S-EPMC9542539 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature