کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3416552 1593710 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Glucose-6-phosphate dehydrogenase is required for extracellular polysaccharide production, cell motility and the full virulence of Xanthomonas oryzae pv. oryzicola
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروب شناسی
پیش نمایش صفحه اول مقاله
Glucose-6-phosphate dehydrogenase is required for extracellular polysaccharide production, cell motility and the full virulence of Xanthomonas oryzae pv. oryzicola
چکیده انگلیسی


• Deletion mutation in zwf significantly reduced bacterial acquisition in hexoses.
• zwf is strongly induced by glucose, sucrose, fructose, mannose, and galactose.
• zwf is required for cell motility and EPS production of Xoc.
• zwf is required for the growth and full virulence of Xoc in rice leaves.

Glucose-6-phosphate dehydrogenase (Zwf) catalyzes conversion of glucose 6-phosphate into gluconate 6-phosphate for Entner–Doudoroff (ED) and pentose phosphate pathways in living organisms. However, it is unclear whether the Zwf-coding gene is involved in pathogenesis of phytopathogenic bacterium. In this report, we found that deletion mutation in zwf of Xanthomonas oryzae pv. oryzicola (Xoc), led the pathogen unable to effectively utilize glucose, sucrose, fructose, mannose and galactose for growth. The transcript level of zwf was strongly induced by glucose, sucrose, fructose, mannose and galactose than that by the NY medium (non sugar). The deletion mutagenesis in zwf also altered the transcript level of key genes, such as rpfF, rpfG and clp, in diffusible signal factor (DSF)-signaling network. In addition, the deletion mutation in zwf impaired bacterial virulence and growth capability in rice leaves, reduced bacterial cell motility and extracellular polysaccharide (EPS) production. The lost properties mentioned above in the zwf deletion mutant were completely restored to the wild-type level by the presence of zwf in trans. All these results suggest that zwf is required for the full virulence of Xoc in rice leaves by involving carbohydrate metabolisms that impact bacterial DSF-signaling network.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microbial Pathogenesis - Volume 78, January 2015, Pages 87–94
نویسندگان
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