Cited by 125Plant Stress Responses and TolerancePlant nutrient uptake and metabolismIon Transport and Channel Regulation

Improving crop salt tolerance using transgenic approaches: an update and physiological analysis

Kotula, Lukasz, Garcia Caparros, Pedro, Zörb, Christian, Colmer, Timothy D., Flowers, Timothy J.·2020·Plant, Cell & Environment

Abstract

Abstract Salinization of land is likely to increase due to climate change with impact on agricultural production. Since most species used as crops are sensitive to salinity, improvement of salt tolerance is needed to maintain global food production. This review summarises successes and failures of transgenic approaches in improving salt tolerance in crop species. A conceptual model of coordinated physiological mechanisms in roots and shoots required for salt tolerance is presented. Transgenic plants overexpressing genes of key proteins contributing to Na + ‘exclusion’ (PM‐ATPases with SOS1 antiporter, and HKT1 transporter) and Na + compartmentation in vacuoles (V‐H + ATPase and V‐H + PPase with NHX antiporter), as well as two proteins potentially involved in alleviating water deficit during salt stress (aquaporins and dehydrins), were evaluated. Of the 51 transformations, with gene(s) involved in Na + ‘exclusion’ or Na + vacuolar compartmentation that contained quantitative data on growth and include a non‐saline control, 48 showed improvements in salt tolerance (less impact on plant mass) of transgenic plants, but with only two tested in field conditions. Of these 51 transformations, 26 involved crop species. Tissue ion concentrations were altered, but not always in the same way. Although glasshouse data are promising, field studies are required to assess crop salinity tolerance.

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Crossref · 10.1111/pce.13865

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133 of 133 references verified0 citation errors · 0 not checkable

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  • Pyramiding multiple genes involved in salt stress responses is important to improve crop salt tolerance.

    “Additionally, a study reviewed various transgenic approaches to improve crop salt tolerance, emphasizing the importance of pyramiding multiple genes involved in salt stress responses (Hsu et al., 2020; Kotula et al., 2020; Liu et al., 2021).”

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Authors
Kotula, L., Garcia Caparros, P., Zörb, C., Colmer, T. D., & Flowers, T. J.
Affiliations
  • The University of Western Australia (AU)
  • Agronomy Department of Superior School Engineering University of Almeria, CIAIMBITAL, Agrifood Campus of International Excellence ceiA3 Almería Spain
  • University of Hohenheim (DE)
  • University of Sussex (GB)
Corresponding author
Colmer, Timothy D.
Venue
Plant, Cell & Environment
Publisher
Wiley
Published
2020-09-15
Volume
43
Issue
12
Pages
2932-2956
ISSN
  • 0140-7791 (ISSN-L)
  • 1365-3040
OpenAlex
W3047450346
Cited by
125
References
133
Citations by year
2026: 12 · 2025: 20 · 2024: 23 · 2023: 17 · 2022: 28 · 2021: 19 · 2020: 6
FWCI
1.48
Type
journal article
Language
en
Open access
closed
Locations
  • Plant Cell & Environment (publishedVersion)
  • PubMed (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
Keywords
salt tolerance, salt stress, genetically modified crops, Na+ exclusion, vacuolar H+-ATPase, aquaporins, dehydrins, drought stress, ion homeostasis, land salinization
MeSH terms
Crop Production, Crops, Agricultural, Plants, Genetically Modified, Salt Tolerance, Salt-Tolerant Plants

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