Science. 1974 Jul 19;185(4147):269-71. doi: 10.1126/science.185.4147.269.
Soybean lectin labeled with fluorescein isothiocyanate combined specifically with all but 3 of 25 strains of the soybean-nodulating bacterium Rhizobium japonicum. The lectin did not bind to any of 23 other strains representative of rhizobia that do not nodulate soybeans. The evidence suggests that an interaction between legume lectins and Rhizobium cells may account for the specificity expressed between rhizobia and host plant in the initiation of the nitrogen-fixing symbiosis.
大豆凝集素与异硫氰酸荧光素标记后，特异性结合到 25 株大豆根瘤菌中的 24 株，但有 3 株除外。该凝集素与 23 株不结瘤的其他根瘤菌无任何结合。这一证据表明，豆科植物凝集素与根瘤细胞之间的相互作用可能解释了根瘤菌与宿主植物在启动固氮共生关系中的特异性。
