IDENTIFICATION AND CLONING OF A CYCLIC BETA-(1-]3), BETA-(1-]6)-D-GLUCAN SYNTHESIS LOCUS FROM BRADYRHIZOBIUM-JAPONICUM

被引：7

作者：

BHAGWAT, AA

TULLY, RE

KEISTER, DL

机构：

[1] UNIV MARYLAND,DEPT AGRON,COLL PK,MD 20742

[2] USDA ARS,BELTSVILLE AGR RES CTR,SOYBEAN & ALFALFA RES LAB,BELTSVILLE,MD 20705

来源：

FEMS MICROBIOLOGY LETTERS | 1993年 / 114卷 / 02期

关键词：

BETA-GLUCANS; BRADYRHIZOBIUM-JAPONICUM; RHIZOBIUM-MELILOTI; NODULATION;

D O I：

10.1016/0378-1097(93)90510-9

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

A cosmid clone complementing a cyclic beta-(1 --> 2)-glucan biosynthesis (ndvB) mutant of Rhizobium meliloti was isolated from a Bradyrhizobium japonicum gene library. This clone specified synthesis of beta-(1 --> 3),beta-(1 --> 6)-linked glucans in R. meliloti. The complemented strain was osmotically tolerant and symbiotically competent on alfalfa. Thus, beta-(1 --> 3),beta-(1 --> 6)-glucans can substitute functionally for beta-(1 --> 2)-glucans in R. meliloti.

引用

页码：139 / 144

页数：6

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