根瘤菌对鸟趾草根系产生的一种糖蛋白的趋化性。

Chemotaxis of Rhizobium spp. to a Glycoprotein Produced by Birdsfoot Trefoil Roots.

作者信息

Currier W W, Strobel G A

出版信息

Science. 1977 Apr 22;196(4288):434-6. doi: 10.1126/science.196.4288.434.

DOI:10.1126/science.196.4288.434

Abstract

Rhizobium spp. show chemotaxis to plant root exudates. A glycoprotein has been isolated from the root exudates of birdsfoot trefoil, Lotus corniculatus, which, at micromolar concentrations, attracts six strains of rhizobia. This glycoprotein has been given the trivial name trefoil chemotactin and contains approximately twice as much protein as carbohydrate. Gel filtration of trefoil chemotactin on a Bio-Gel A-1.5m column gave a molecular weight of approximately 60,000. Trefoil chemotactin represents a new class of chemoattractants for bacteria.

摘要

根瘤菌对植物根系分泌物表现出趋化性。从鸟足豆（百脉根）的根系分泌物中分离出一种糖蛋白，该糖蛋白在微摩尔浓度下能吸引六种根瘤菌菌株。这种糖蛋白被赋予了俗名三叶草趋化素，其蛋白质含量约为碳水化合物的两倍。在Bio-Gel A-1.5m柱上对三叶草趋化素进行凝胶过滤，得到的分子量约为60,000。三叶草趋化素代表了一类新型的细菌化学引诱剂。