Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Lunnon Road, Pretoria 0028, South Africa.
Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Lunnon Road, Pretoria 0028, South Africa.
Curr Opin Microbiol. 2023 Jun;73:102297. doi: 10.1016/j.mib.2023.102297. Epub 2023 Mar 30.
The rhizosphere is a chemically complex environment that harbors a strikingly diverse microbial community. The past few decades have seen a rapid growth in the body of literature on plant-microbe-microbe interactions and plant health. Thus, the aim of this paper is to review current knowledge on plant-microbe-microbe (specifically bacteria) interactions in the rhizosphere and how these influence rhizosphere microbiomes and impact plant health. This article discusses (i) how the plant recruits beneficial rhizosphere bacteria and ii) how competition between rhizosphere bacteria and mechanisms/weapons employed in bacteria-bacteria competition shapes rhizosphere microbiome and in turn affects plant heath. The discussion mainly focuses on interference competition, characterized by production of specialized metabolites (antibacterial compounds) and exploitative competition where a bacterial strain restricts the competitor's access to nutrients such as through secretion of siderophores that could allude to cooperation. Understanding mechanisms employed in bacteria-bacteria and plant-bacteria interactions could provide insights into how to manipulate microbiomes for improved agricultural outcomes.
根际是一个化学组成复杂的环境，拥有丰富多样的微生物群落。在过去的几十年中，植物-微生物-微生物（特别是细菌）相互作用和植物健康方面的文献数量迅速增加。因此，本文旨在综述根际中植物-微生物-微生物（特别是细菌）相互作用的最新知识，以及这些相互作用如何影响根际微生物组并影响植物健康。本文讨论了（i）植物如何招募有益的根际细菌，以及（ii）根际细菌之间的竞争以及细菌-细菌竞争中使用的机制/武器如何塑造根际微生物组，并进而影响植物健康。讨论主要集中在干扰竞争上，其特征是产生专门的代谢物（抗菌化合物）和利用竞争，其中一种细菌菌株通过分泌铁载体来限制竞争者获取营养物质，这可能暗示着合作。了解细菌-细菌和植物-细菌相互作用中使用的机制可以深入了解如何操纵微生物组以改善农业成果。
