Mesophyll airspace unsaturation drives C₄ plant success under vapor pressure deficit stress.

ABSTRACT: A fundamental assumption in plant science posits that leaf air spaces remain vapor saturated, leading to the predominant view that stomata alone control leaf water loss. This concept has been pivotal in photosynthesis and water-use efficiency research. However, recent evidence has refuted this longstanding assumption by providing evidence of unsaturation in the leaf air space of C₃ plants under relatively mild vapor pressure deficit (VPD) stress. This phenomenon represents a nonstomatal mechanism restricting water loss from the mesophyll. The potential ubiquity and physiological implications of this phenomenon, its driving mechanisms in different plant species and habitats, and its interaction with other ecological adaptations have. In this context, C₄ plants spark pa

SUBMITTER: Marquez DA 

PROVIDER: S-EPMC11441488 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature