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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology
REVIEW

Salt tolerance in Brassicaceae crops: physiological responses and molecular mechanisms

Tenghui Wang https://orcid.org/0000-0001-6440-2517 A , Xuyan Yang A , Zhenyu Fan A B and Yushu Wang https://orcid.org/0000-0001-7526-7680 A B *
+ Author Affiliations
- Author Affiliations

A College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, China.

B Heilongjiang Provincial Key Laboratory of Resistance Gene Engineering and Protection of Biodiversity in Cold Areas, College of Life Sciences, Agriculture and Forestry, Qiqihar University, Qiqihar, China.

* Correspondence to: wangys1019@126.com

Handling Editor: Honghong Wu

Functional Plant Biology 50(10) 753-764 https://doi.org/10.1071/FP23023
Submitted: 13 February 2023  Accepted: 27 July 2023  Published: 18 August 2023

© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing

Abstract

Soil salinisation is a growing threat to global agriculture, reducing crop yields. Brassicaceae crops are vital vegetables and cash crops. Salt stress significantly affects the growth and development of Brassicaceae crops. A better understanding of the molecular and physiological mechanisms of salt tolerance is of theoretical and practical importance to improve Brassicaceae crop’s salt tolerance and crop quality. Combined with previous research results, we discuss recent advances in research on salt stress response and salt tolerance in Brassicaceae crops. We summarised recent research progress on the physiological and molecular mechanisms of ionic homeostasis, antioxidant regulation, hormonal regulation and accumulation of osmotic-adjustment substances. We also discussed the molecular mechanism of Brassicaceae crop salt tolerant varieties from the perspective of differentially expressed genes, differentially expressed proteins and metabolites through transcriptome, proteome and metabonomic analysis methods. This paper summarises the molecular mechanisms in the perspective of differentially expressed genes, differentially expressed proteins, and metabolites through transcriptomic, proteome and metabolomics analysis. The review provides abundant data for accelerating the breeding of salt-tolerant Brassicaceae and laid a foundation for understanding the mechanism of salt tolerance of Brassicaceae crops and breeding salt-tolerance varieties.

Keywords: abiotic stress, Brassicaceae crop, hormone regulation, omics analysis, physiological alterations, salt stress, sodium, stress response.

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