کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4358680 1300450 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gluconic acid produced by Gluconacetobacter diazotrophicus Pal5 possesses antimicrobial properties
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروبیولوژی و بیوتکنولوژی کاربردی
پیش نمایش صفحه اول مقاله
Gluconic acid produced by Gluconacetobacter diazotrophicus Pal5 possesses antimicrobial properties
چکیده انگلیسی

Gluconic acid is produced in large quantities by the endophytic and diazotrophic bacterium Gluconacetobacter diazotrophicus Pal5. This organic acid derives from direct oxidation of glucose by a pyrroloquinoline-quinone-linked glucose dehydrogenase in this plant growth-promoting bacterium. In the present article, evidence is presented showing that gluconic acid is also responsible for the antimicrobial activity of G. diazotrophicus Pal5. The broad antagonistic spectrum includes Gram-positive and -negative bacteria. Eukaryotic microorganisms are more resistant to growth inhibition by this acid. Inhibition by gluconic acid can be modified through the presence of other organic acids. In contrast to other microorganisms, the Quorum Sensing system of G. diazotrophicus Pal5, a regulatory mechanism that plays a key role in several microbe–microbe interactions, is not related to gluconic acid production and the concomitant antagonistic activity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Research in Microbiology - Volume 165, Issue 7, September 2014, Pages 549–558
نویسندگان
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