Rudrappa Thimmaraju, Biedrzycki Meredith L, Bais Harsh P
Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19711, USA.
FEMS Microbiol Ecol. 2008 May;64(2):153-66. doi: 10.1111/j.1574-6941.2008.00465.x. Epub 2008 Mar 18.
The rhizosphere is the critical interface between plant roots and soil where beneficial and harmful interactions between plants and microorganisms occur. Although microorganisms have historically been studied as planktonic (or free-swimming) cells, most are found attached to surfaces, in multicellular assemblies known as biofilms. When found in association with plants, certain bacteria such as plant growth promoting rhizobacteria not only induce plant growth but also protect plants from soil-borne pathogens in a process known as biocontrol. Contrastingly, other rhizobacteria in a biofilm matrix may cause pathogenesis in plants. Although research suggests that biofilm formation on plants is associated with biological control and pathogenic response, little is known about how plants regulate this association. Here, we assess the biological importance of biofilm association on plants.
根际是植物根系与土壤之间的关键界面，植物与微生物之间的有益和有害相互作用在此发生。尽管微生物在历史上一直被作为浮游（或自由游动）细胞进行研究，但大多数微生物是附着在表面的，存在于称为生物膜的多细胞集合体中。当与植物共生时，某些细菌，如促进植物生长的根际细菌，不仅能促进植物生长，还能在一个被称为生物防治的过程中保护植物免受土壤传播病原体的侵害。相反，生物膜基质中的其他根际细菌可能会导致植物发病。尽管研究表明植物上生物膜的形成与生物防治和致病反应有关，但对于植物如何调节这种关联却知之甚少。在这里，我们评估生物膜与植物关联的生物学重要性。
