Growing on calcareous soils and facing climate change.

Authors :: Bontpart T
Weiss A
Vile D
Gérard F
Lacombe B
Reichheld JP
Mari S
Source :: Trends in plant science [Trends Plant Sci] 2024 Apr 02. Date of Electronic Publication: 2024 Apr 02.
Publication Year :: 2024
Publisher :: Ahead of Print
Abstract: Soil calcium carbonate (CaCO <subscript>3</subscript> ) impacts plant mineral nutrition far beyond Fe metabolism, imposing constraints for crop growth and quality in calcareous agrosystems. Our knowledge on plant strategies to tolerate CaCO <subscript>3</subscript> effects mainly refers to Fe acquisition. This review provides an update on plant cellular and molecular mechanisms recently described to counteract the negative effects of CaCO <subscript>3</subscript> in soils, as well as recent efforts to identify genetic bases involved in CaCO <subscript>3</subscript> tolerance from natural populations, that could be exploited to breed CaCO <subscript>3</subscript> -tolerant crops. Finally, we review the impact of environmental factors (soil water content, air CO <subscript>2</subscript> , and temperature) affecting soil CaCO <subscript>3</subscript> equilibrium and plant tolerance to calcareous soils, and we propose strategies for improvement in the context of climate change.<br />Competing Interests: Declaration of interests The authors have no interests to declare.<br /> (Copyright © 2024 Elsevier Ltd. All rights reserved.)