The influences of stomatal size and density on rice abiotic stress resilience

The influences of stomatal size and density on rice abiotic stress resilience

© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 237(2023), 6 vom: 01. März, Seite 2180-2195
1. Verfasser: Caine, Robert S (VerfasserIn)
Weitere Verfasser: Harrison, Emily L, Sloan, Jen, Flis, Paulina M, Fischer, Sina, Khan, Muhammad S, Nguyen, Phuoc Trong, Nguyen, Lang Thi, Gray, Julie E, Croft, Holly
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't climate change drought plant water-use rice salinity stomata temperature vapour pressure deficit (VPD) mehr... Water 059QF0KO0R
Beschreibung
Zusammenfassung:© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
A warming climate coupled with reductions in water availability and rising salinity are increasingly affecting rice (Oryza sativa) yields. Elevated temperatures combined with vapour pressure deficit (VPD) rises are causing stomatal closure, further reducing plant productivity and cooling. It is unclear what stomatal size (SS) and stomatal density (SD) will best suit all these environmental extremes. To understand how stomatal differences contribute to rice abiotic stress resilience, we screened the stomatal characteristics of 72 traditionally bred varieties. We found significant variation in SS, SD and calculated anatomical maximal stomatal conductance (gsmax ) but did not identify any varieties with SD and gsmax as low as transgenic OsEPF1oe plants. Traditionally bred varieties with high SD and small SS (resulting in higher gsmax ) typically had lower biomasses, and these plants were more resilient to drought than low SD and large SS plants, which were physically larger. None of the varieties assessed were as resilient to drought or salinity as low SD OsEPF1oe transgenic plants. High SD and small SS rice displayed faster stomatal closure during increasing temperature and VPD, but photosynthesis and plant cooling were reduced. Compromises will be required when choosing rice SS and SD to tackle multiple future environmental stresses
Beschreibung:Date Completed 22.02.2023
Date Revised 22.03.2024
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.18704