Journal
PLANT BIOLOGY
Volume 21, Issue -, Pages 39-48Publisher
WILEY
DOI: 10.1111/plb.12704
Keywords
Ca2+ signalling; salt stress
Categories
Funding
- Deutsche Forschungsgemeinschaft [FOR964, KU 931/14]
- Distinguished Scientist Fellowship Program, King Saud University, Saudi Arabia
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Soil salinity adversely affects plant growth, crop yield and the composition of ecosystems. Salinity stress impacts plants by combined effects of Na+ toxicity and osmotic perturbation. Plants have evolved elaborate mechanisms to counteract the detrimental consequences of salinity. Here we reflect on recent advances in our understanding of plant salt tolerance mechanisms. We discuss the embedding of the salt tolerance-mediating SOS pathway in plant hormonal and developmental adaptation. Moreover, we review newly accumulating evidence indicating a crucial role of a transpiration-dependent salinity tolerance pathway, that is centred around the function of the NADPH oxidase RBOHF and its role in endodermal and Casparian strip differentiation. Together, these data suggest a unifying and coordinating role for Ca2+ signalling in combating salinity stress at the cellular and organismal level.
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