The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.
Soil Bacteria Confer Plant Salt Tolerance by Tissue-Specific Regulation of the Sodium Transporter HKT1
Open accessAbstract
Elevated sodium (Na+) decreases plant growth and, thereby, agricultural productivity. The ion transporter high-affinity K+ transporter (HKT)1 controls Na+ import in roots, yet dysfunction or overexpression of HKT1 fails to increase salt tolerance, raising questions as to HKT1's role in regulating Na+ homeostasis. Here, we report that tissue-specific regulation of HKT1 by the soil bacterium Bacillus subtilis GB03 confers salt tolerance in Arabidopsis thaliana. Under salt stress (100 mM NaCl), GB03 concurrently down- and upregulates HKT1 expression in roots and shoots, respectively, resulting in lower Na+ accumulation throughout the plant compared with controls. Consistent with HKT1 participation in GB03-induced salt tolerance, GB03 fails to rescue salt-stressed athkt1 mutants from stunted foliar growth and elevated total Na+ whereas salt-stressed Na+ export mutants sos3 show GB03-induced salt tolerance with enhanced shoot and root growth as well as reduced total Na+. These results demonstrate that tissue-specific regulation of HKT1 is critical for managing Na+ homeostasis in salt-stressed plants, as well as underscore the breadth and sophistication of plant–microbe interactions.
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Cited by
Rhizosphere bacteria help plants tolerate abiotic stress
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Metadata
- Authors
- Zhang, H., Kim, M.-S., Sun, Y., Dowd, S. E., Shi, H., & Paré, P. W.
- Venue
- Molecular Plant-Microbe Interactions®
- Publisher
- Scientific Societies
- Published
- 2008-06
- Volume
- 21
- Issue
- 6
- Pages
- 737-744
- ISSN
- 0894-0282 (ISSN-L)
- 1943-7706
- OpenAlex
- W2153289494
- Cited by
- 521
- References
- 40
- FWCI
- 6.94
- Type
- journal article
- Language
- en
- Open access
- green
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- Zhang, H., Kim, M.-S., Sun, Y., Dowd, S. E., Shi, H., & Paré, P. W. (2008). Soil Bacteria Confer Plant Salt Tolerance by Tissue-Specific Regulation of the Sodium Transporter HKT1. Molecular Plant-Microbe Interactions®. https://doi.org/10.1094/mpmi-21-6-0737
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