数字农科院2.0

The Function of Root Exudates in the Root Colonization by Beneficial Soil Rhizobacteria

文献类型： 外文期刊

作者： Chen, Lin;Liu, Yunpeng

作者机构：

关键词： rhizobacteria;root exudation;root colonization;root exudate-rhizobacteria interaction

期刊名称： BIOLOGY-BASEL

ISSN：

年卷期： 2024 年 13 卷 2 期

页码：

收录情况： SCIE（2024版）

摘要： Simple Summary This review is focused on the role of root exudates on beneficial rhizobacterial colonization. The dynamic interaction between root exudates and rhizobacteria is influenced by plant genotype, development, environmental biotic factors, and abiotic factors. Bacterial-specific metabolism plays crucial roles in rhizosphere competence and rhizobacterial colonization ability. Diverse types of root exudates serve as nutrients, signals, or antimicrobial substances, facilitating root colonization by beneficial bacteria. Certain secondary metabolites selectively promote root colonization by bacteria with specialized functions.Abstract Soil-beneficial microbes in the rhizosphere play important roles in improving plant growth and health. Root exudates play key roles in plant-microbe interactions and rhizobacterial colonization. This review describes the factors influencing the dynamic interactions between root exudates and the soil microbiome in the rhizosphere, including plant genotype, plant development, and environmental abiotic and biotic factors. We also discuss the roles of specific metabolic mechanisms, regulators, and signals of beneficial soil bacteria in terms of colonization ability. We highlight the latest research progress on the roles of root exudates in regulating beneficial rhizobacterial colonization. Organic acids, amino acids, sugars, sugar alcohols, flavonoids, phenolic compounds, volatiles, and other secondary metabolites are discussed in detail. Finally, we propose future research objectives that will help us better understand the role of root exudates in root colonization by rhizobacteria and promote the sustainable development of agriculture and forestry.

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