Burghardt Liana T, diCenzo George C
The Pennsylvania State University, Department of Plant Science, University Park, PA 16802, United States; The Pennsylvania State University, Ecology Graduate Program, University Park, PA 16802, United States.
Queen's University, Department of Biology, Kingston, ON K7L 3N6, Canada.
Curr Opin Microbiol. 2023 Apr;72:102281. doi: 10.1016/j.mib.2023.102281. Epub 2023 Feb 26.
Rhizobial bacteria have complex lifestyles that involve growth and survival in bulk soil, plant rhizospheres and rhizoplanes, legume infection threads, and mature and senescing legume nodules. In nature, rhizobia coexist and compete with many other rhizobial strains and species to form host associations. We review recent work defining competitive interactions across these environments. We highlight the use of sophisticated measurement tools and sequencing technologies to examine competition mechanisms in planta, and highlight environments (e.g. soil and senescing nodules) where we still know exceedingly little. We argue that moving toward an explicitly ecological framework (types of competition, resources, and genetic differentiation) will clarify the evolutionary ecology of these foundational organisms and open doors for engineering sustainable, beneficial associations with hosts.
根瘤菌具有复杂的生活方式，包括在大量土壤、植物根际和根表、豆科植物感染丝以及成熟和衰老的豆科植物根瘤中生长和存活。在自然界中，根瘤菌与许多其他根瘤菌菌株和物种共存并竞争，以形成宿主关联。我们综述了近期关于定义这些环境中竞争相互作用的研究工作。我们强调使用先进的测量工具和测序技术来研究植物体内的竞争机制，并指出我们仍然知之甚少的环境（如土壤和衰老的根瘤）。我们认为，朝着明确的生态框架（竞争类型、资源和遗传分化）发展将阐明这些基础生物的进化生态学，并为构建与宿主可持续、有益的关联打开大门。
