Belonging to the legume family, it enters a complex symbiosis with soil bacteria called rhizobia, which results in the formation of a new root organ, the nodule.

作为豆科植物的一员，大豆与一种被称之为根瘤菌的土壤细菌形成了复杂的共生关系，结果导致新的根器官——根瘤的形成。

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In recent years, molecular interaction between host legume plants and rhizobial bacteria implies that the factor of recognizing rhizobia is the lectin on the roots of host plants.

近年来研究表明识别根瘤菌的因子是豆科植物根上的凝集素。

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