Shoot hydraulic impairments induced by root waterlogging: Parallels and contrasts with drought.

ABSTRACT: Soil waterlogging and drought correspond to contrasting water extremes resulting in plant dehydration. Dehydration in response to waterlogging occurs due to impairments to root water transport, but no previous study has addressed whether limitations to water transport occur beyond this organ or whether dehydration alone can explain shoot impairments. Using common bean (Phaseolus vulgaris) as a model species, we report that waterlogging also impairs water transport in leaves and stems. During the very first hours of waterlogging, leaves transiently dehydrated to water potentials close to the turgor loss point, possibly driving rapid stomatal closure and partially explaining the decline in leaf hydraulic conductance. The initial decline in leaf hydraulic conductance (occurring within 24 h),

SUBMITTER: Haverroth EJ 

PROVIDER: S-EPMC11663564 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature