Stomatal closure during water deficit is controlled by below-ground hydraulics

• Published in: Annals of botany Vol. 129; no. 2; pp. 161 - 170
• Main Authors: Abdalla, Mohanned, Ahmed, Mutez Ali, Cai, Gaochao, Wankmüller, Fabian, Schwartz, Nimrod, Litig, Or, Javaux, Mathieu, Carminati, Andrea
• Format: Journal Article
• Language: English
• Published: England Oxford University Press 28.01.2022
• Subjects: Original; Plant Leaves - physiology; Plant Roots - physiology; Plant Stomata - physiology; Plant Transpiration - physiology; Soil; Water - physiology; Xylem - physiology; water stress; hydraulic limitations; root system; hydraulic signal; modelling; Solanum lycopersicum

Stomatal closure allows plants to promptly respond to water shortage. Although the coordination between stomatal regulation, leaf and xylem hydraulics has been extensively investigated, the impact of below-ground hydraulics on stomatal regulation remains unknown. We used a novel root pressure chambe...