این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Microbiology، جلد ۶، شماره ۴، صفحات ۲۸۵-۲۹۵
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Phosphate solubilization characteristics of efficient nitrogen fixing soil Azotobacter strains.
چکیده انگلیسی مقاله Background and Objectives: Azotobacter is a diazotroph bacterium reported to possess various plant growth-promoting characteristics.The aim of this study was to isolate Azotobacter strains capable of fixing nitrogen and effectively hydrolyzing both organic and inorganic Pi compounds. Materials and Methods: In this study, soil samples collected from a diverse range of slightly alkaline soil types were screened for Azotobacter isolates. The inorganic and organic phosphate solubilization potentials of twenty competent phosphate solubilizing Azotobacter isolates were assessed.Variations were noted in the solubilization potentials. esult: Three isolates, identified as Azotobacter vinelandii strains O2, O4 and O6, were able to fix atmospheric N2 effectively. The nitrogenase activity of these isolates ranged between 158.6 and 326.4 C2H4h(-1)vial(-1) (ethylene). Bacterial growth rates and phosphate solubilization activities were measured quantitatively under various environmental conditions. A close association was evident between phosphate solubilizing ability and growth rate as an indicator of active metabolism. All three phosphate solubilizing bacteria (PSB) were able to withstand temperature as high as 45°C, high concentration of NaCl (upto 5%) and a wide range of initial pH from 5 to 10 while hydrolyzing phosphate compounds actively. Conclusion: Azotobacter vinelandii strains O2, O4 and O6 are superior candidates for biofertilizers that may result in the reduction of chemical nitrogen and phosphate fertilizers leading to increase crop production.
کلیدواژه‌های انگلیسی مقاله Azotobacter,Biofertilizer,Nitrogen fixation,Pisolubilizing
نویسندگان مقاله رحیم نصرتی | rahim nosrati
molecular microbiology research center mmrc , shahed university, tehran, i.r. iran and department of biology, faculty of science, shahed university, tehran, i.r. iran.

سازمان اصلی تایید شده: دانشگاه شاهد (Shahed university)

پرویز اولیا | parviz owlia
molecular microbiology research center mmrc , shahed university, tehran, i.r. iran.

سازمان اصلی تایید شده: دانشگاه شاهد (Shahed university)

حوریه صادری | horieh saderi
molecular microbiology research center mmrc , shahed university, tehran, i.r. iran.

سازمان اصلی تایید شده: دانشگاه شاهد (Shahed university)

ایرج رسولی | iraj rasooli
molecular microbiology research center mmrc , shahed university, tehran, i.r. iran and department of biology, faculty of science, shahed university, tehran, i.r. iran.

سازمان اصلی تایید شده: دانشگاه شاهد (Shahed university)

محمد alimalboobi | mohammad alimalboobi
national institute of genetic engineering and biotechnology nigeb , tehran, i.r. iran.

سازمان اصلی تایید شده: پژوهشگاه ملی مهندسی ژنتیک و زیست فناوری

نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/385
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Articles
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات