Involvement of a phosphate starvation inducible glucose dehydrogenase in soil phosphate solubilization by Enterobacter asburiae

被引：106

作者：

Gyaneshwar, P

Parekh, LJ

Archana, G

Poole, PS

Collins, MD

Hutson, RA

Kumar, GN ^{[1
]}

机构：

[1] Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Biochem, Baroda 390002, Gujarat, India

[2] Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Microbiol, Baroda 390002, Gujarat, India

[3] Univ Reading, Sch Anim & Microbial Sci, Div Microbiol, Reading RG6 6AJ, Berks, England

[4] Inst Food Res, BBSRC, Dept Microbiol, Reading RGT6 6BZ, Berks, England

来源：

FEMS MICROBIOLOGY LETTERS | 1999年 / 171卷 / 02期

关键词：

Enterobacter asburiae; glucose dehydrogenase; phosphate starvation; phosphate solubilization;

D O I：

10.1111/j.1574-6968.1999.tb13436.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

A glucose dehydrogenase (GDH) that is induced 5-fold by phosphate starvation, has been characterized from a bacterium isolated from alkaline Indian vertisol soils. The bacterium was identified as Enterobacter asburiae based on 16S rRNA analysis. Concomitant with CDH induction, glucose was oxidized and secreted as gluconate (50 mM). Excretion of this acid caused a reduction in soil pH and the release of phosphate and iron. Mutants deficient in GDH activity failed to release phosphate from alkaline soils indicating that GDH activity is required to solubilize phosphate. (C) 1999 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

引用

页码：223 / 229

页数：7

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