Attachment to roots and virulence of a chvB mutant of Agrobacterium tumefaciens are temperature sensitive

被引:14
|
作者
Bash, R [1 ]
Matthysse, AG [1 ]
机构
[1] Univ N Carolina, Dept Biol, Chapel Hill, NC 27599 USA
关键词
temperature-sensitive mutants; beta-1,2-D-glucans;
D O I
10.1094/MPMI.2002.15.2.160
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Agrobacterium tumefaciens chvB mutants are unable to produce beta-1,2 glucan. They are nonattaching and avirulent and show reduced motility at room temperature. At lower temperatures (16degreesC), chvB mutants became virulent on Bryophyllum daigremontiana and Lycopersicon esculentum and were able to attach to L. esculentum, Arabidopsis thaliana, Daucus carota, and Tagetes erecta roots. The mutant bacteria also recovered wild-type motility at lower temperatures. Two other nonattaching mutants of A. tumefaciens, AttR and AtrA, were unaffected by the lowered temperature, remaining nonattaching and avirulent.
引用
收藏
页码:160 / 163
页数:4
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