کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4359496 1615930 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A putative colRXC1049-colSXC1050 two-component signal transduction system in Xanthomonas campestris positively regulates hrpC and hrpE operons and is involved in virulence, the hypersensitive response and tolerance to various stresses
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی میکروبیولوژی و بیوتکنولوژی کاربردی
پیش نمایش صفحه اول مقاله
A putative colRXC1049-colSXC1050 two-component signal transduction system in Xanthomonas campestris positively regulates hrpC and hrpE operons and is involved in virulence, the hypersensitive response and tolerance to various stresses
چکیده انگلیسی
The ColR-ColS two-component signal transduction system was originally characterized as a regulatory system involved in the capacity of root-colonizing biocontrol bacterium Pseudomonas fluorescens to colonize plant roots. There are three pairs of putative colR-colS two-component regulatory systems annotated in the phytopathogen Xanthomonas campestris pathovar campestris. Mutational studies revealed that one of them, named colRXC1049 and colSXC1050, is a global regulatory system involved in various cellular processes, including virulence, hypersensitive response and stress tolerance. Growth rate determination showed that, although the colRXC1049 and colSXC1050 mutants are not auxotrophic, colRXC1049 and colSXC1050 are required for the pathogen to proliferate well in standard media and host plants. Assays of β-glucuronidase activities of plasmid-driven promoter-gusA reporters and/or semi-quantitative RT-PCR demonstrated that colRXC1049 and colSXC1050 positively regulate expression of hrpC and hrpE operons, and that expression of colRXC1049 and colSXC1050 is not controlled by key hrp regulators HrpG and HrpX.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Research in Microbiology - Volume 159, Issues 7–8, September–October 2008, Pages 569-578
نویسندگان
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