Differences in microbial composition and salt tolerance between rhizosphere and bulk soil of Kalidium foliatum
- 1College of Life Sciences, Xinjiang Agriculture University
- 2College of Ecology and Environment, Xinjiang University
- 3Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences
Abstract
Salt is an important abiotic stress that affects plant growth. Research has shown that plants can recruit beneficial microorganisms from the surrounding soil. However, the ecological functions of the rhizosphere microbiome in salt tolerant plants have not been explored to a large extent. Based on this, this study took the halophyte K. foliatum as the research object, and used metagenomics technology to analyze the differences in microbial composition and salt tolerance functional genes between the rhizosphere and bulk soil of K. foliatum in different salt habitats, providing new theoretical basis for salt alkali management. The results showed that the dominant groups in the rhizosphere soil microbial community of K. foliatum under two salt habitats were Actinobacteria, Proteobacteria, Bacteroidetes, and Chloroflexi. The abundance of 49 genera in Actinobacteria in high salt rhizosphere were significantly higher than that in low salt rhizosphere. These microorganisms belong to soil salt tolerant and halophilic microorganisms, and have the ability to improve plant salt tolerance. In high salt habitat, the expression of genes related to ion transport ( nqrA , nhaC , rnfC , chaA , and yrbG ) and the synthesis of osmoregulatory substances ( proP , ectA ) was significantly increased. These genes are associated with Na ⁺ , K ⁺ , Mg ²⁺ , proline and ectoine involved in transport or synthesis. The correlation indicates that halophilic archaea have a greater impact on functional genes than other microorganisms, suggesting that halophilic bacteria have a more prominent ability to regulate salt tolerance of K. foliatum .
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BibTeX
@article{jiang2026differences,
title = {{Differences in microbial composition and salt tolerance between rhizosphere and bulk soil of Kalidium foliatum}},
author = {Lamei Jiang and Deyan Wu and Eryang Li and Wenjing Li and Yuehan Liu and Xiaotong Li and Guang Yang and Guanghui Lv},
journal = {Frontiers in Plant Science},
year = {2026},
month = oct,
doi = {10.3389/fpls.2026.1920612},
url = {https://www.frontiersin.org/articles/10.3389/fpls.2026.1920612/full},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Differences in microbial composition and salt tolerance between rhizosphere and bulk soil of Kalidium foliatum
AU - Lamei Jiang
AU - Deyan Wu
AU - Eryang Li
AU - Wenjing Li
AU - Yuehan Liu
AU - Xiaotong Li
AU - Guang Yang
AU - Guanghui Lv
PY - 2026
DA - 2026/10/07
JO - Frontiers in Plant Science
DO - 10.3389/fpls.2026.1920612
UR - https://www.frontiersin.org/articles/10.3389/fpls.2026.1920612/full
AB - Salt is an important abiotic stress that affects plant growth. Research has shown that plants can recruit beneficial microorganisms from the surrounding soil. However, the ecological functions of the rhizosphere microbiome in salt tolerant plants have not been explored to a large extent. Based on this, this study took the halophyte K. foliatum as the research object, and used metagenomics technology to analyze the differences in microbial composition and salt tolerance functional genes between the rhizosphere and bulk soil of K. foliatum in different salt habitats, providing new theoretical basis for salt alkali management. The results showed that the dominant groups in the rhizosphere soil microbial community of K. foliatum under two salt habitats were Actinobacteria, Proteobacteria, Bacteroidetes, and Chloroflexi. The abundance of 49 genera in Actinobacteria in high salt rhizosphere were significantly higher than that in low salt rhizosphere. These microorganisms belong to soil salt tolerant and halophilic microorganisms, and have the ability to improve plant salt tolerance. In high salt habitat, the expression of genes related to ion transport ( nqrA , nhaC , rnfC , chaA , and yrbG ) and the synthesis of osmoregulatory substances ( proP , ectA ) was significantly increased. These genes are associated with Na ⁺ , K ⁺ , Mg ²⁺ , proline and ectoine involved in transport or synthesis. The correlation indicates that halophilic archaea have a greater impact on functional genes than other microorganisms, suggesting that halophilic bacteria have a more prominent ability to regulate salt tolerance of K. foliatum .
SN - 1664-462X
ER -