The role of microbial surface polysaccharides in the Rhizobium-legume interaction.
The role of microbial surface polysaccharides in the Rhizobium-legume interaction.
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DOI：
10.1007/978-1-4899-1707-2_3
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发表时间：
1998
影响因子：
--
通讯作者：
K. Niehaus;A. Becker
中科院分区：
文献类型：
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作者：
K. Niehaus;A. Becker
根瘤菌（RhizobiumorBradyrhizobium）和豆科植物（Leguminosae）的共生相互作用使得研究细胞间识别、信号交换和诱导形态建成成为可能。根瘤菌能够通过复杂的感染机制进入植物根部，诱导新的植物器官，根瘤，并在受感染的植物细胞内分化成具有内共生体性质的固氮类细菌（Hirsch，1992）。这种共生关系的建立是由细菌和植物产生的复杂信号网络控制的。在这篇综述中，我们想提请注意的作用和功能的根瘤菌表面碳水化合物在建立的共生。根瘤菌细胞能够合成几种表面碳水化合物：与细胞外膜结合的脂多糖（LPS），与细胞表面结合的荚膜多糖（CPS）和富含3-脱氧-D-甘露-2-辛酮糖酸（KDO）的多糖（KPS），以及分泌到培养基中的胞外多糖（EPS）。
The symbiotic interaction between the soil bacteria classified asRhizobiumorBradyrhizobiumand members of the plant familyLeguminosaeenables the study of cell-to-cell recognition, signal exchange, and induced morphogenesis. Rhizobia are able to enter the plant root via a sophisticated infection mechanism, induce a new plant organ, the root nodule, and differentiate within the infected plant cells into nitrogen-fixing bacteroids which have properties of an endosymbiont (Hirsch, 1992). The establishment of this symbiosis is controlled by a complex network of signals which are produced by both the bacteria and the plant. In this review we would like to draw attention to the role and functions of rhizobial surface carbohydrates during the establishment of the symbiosis. Rhizobial cells are able to synthesize several surface carbohydrates: lipopolysaccharides (LPS) bound to the outer membrane of the cell, capsular polysaccharides (CPS) and 3-deoxy-D-manno-2-octulosonic acid (KDO)-rich polysaccharides (KPS) associated with the cell surface, and exopolysaccharides (EPS) secreted to the medium.