Sugiyama Akifumi
Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan.
J Adv Res. 2019 Mar 19;19:67-73. doi: 10.1016/j.jare.2019.03.005. eCollection 2019 Sep.
The rhizosphere is the region close to a plant's roots, where various interactions occur. Recent evidence indicates that plants influence rhizosphere microbial communities by secreting various metabolites and, in turn, the microbes influence the growth and health of the plants. Despite the importance of plant-derived metabolites in the rhizosphere, relatively little is known about their spatiotemporal distribution and dynamics. In addition to being an important crop, soybean () is a good model plant with which to study these rhizosphere interactions, because soybean plants have symbiotic relationships with rhizobia and arbuscular mycorrhizal fungi and secrete various specialized metabolites, such as isoflavones and saponins, into the soil. This review summarizes the characteristics of the soybean rhizosphere from the viewpoint of specialized metabolites and microbes and discusses future research perspectives. In sum, secretion of these metabolites is developmentally and nutritionally regulated and potentially alters the rhizosphere microbial communities.
根际是靠近植物根系的区域，各种相互作用在此发生。最近的证据表明，植物通过分泌各种代谢物影响根际微生物群落，反过来，微生物也会影响植物的生长和健康。尽管植物源代谢物在根际中很重要，但对其时空分布和动态的了解相对较少。大豆（）不仅是一种重要的作物，也是研究这些根际相互作用的良好模式植物，因为大豆植株与根瘤菌和丛枝菌根真菌存在共生关系，并向土壤中分泌各种特殊代谢物，如异黄酮和皂苷。本综述从特殊代谢物和微生物的角度总结了大豆根际的特征，并讨论了未来的研究前景。总之，这些代谢物的分泌受到发育和营养调控，并可能改变根际微生物群落。
