Sigma factor genes sigC, sipE, and sigG are upregulated in heterocysts of the cyanobacterium Anabaena sp strain PCC 7120

被引：36

作者：

Aldea, M. Ramona ^{[1
]}

Mella-Herrera, Rodrigo A. ^{[1
]}

Golden, James W. ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Biol, College Stn, TX 77843 USA

来源：

JOURNAL OF BACTERIOLOGY | 2007年 / 189卷 / 22期

关键词：

D O I：

10.1128/JB.00821-07

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

We used gfp transcriptional fusions to investigate the regulation of eight sigma factor genes during heterocyst development in the cyanobacterium Anabaena sp. strain PCC 7120. Reporter strains containing gfp fusions with the upstream regions of sigB2, sigD, sigI, and sigJ did not show developmental regulation. Time-lapse microscopy of sigC, sigE, and sigG reporter strains showed increased green fluorescent protein fluorescence in differentiating cells at 4 h, 16 h, and 9 h, respectively, after nitrogen step down.

引用

页码：8392 / 8396

页数：5

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