کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7556850 | 1491298 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reactive oxygen species dynamics in roots of salt sensitive and salt tolerant cultivars of rice
ترجمه فارسی عنوان
پویایی گونه های واکنشی اکسیژن در ریشه های ارقام حساس به نمک و تحمل به نمکی برنج
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
DABmonodehydroascorbate reductasePDHP5CSNBTMDHARdehydroascorbate reductaseDHAR3,3-diaminobenzidine - 3،3-دیامینبنزیدینH2DCFDA - H2DCFD بهRboh - R ب OHNADPH oxidase - اکسیداز NADPH Rice - برنجnitro blue tetrazolium - تترازولیم نیترو آبیRoot - ریشهSalinity - شوریProline - پرولینproline dehydrogenase - پرولین دهیدروژنازReactive oxygen species - گونههای فعال اکسیژن
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Salinity stress is one of the major constraints for growth and survival of plants that affects rice productivity worldwide. Hence, in the present study, roots of two contrasting salinity sensitive cultivars, IR64 (IR64, salt sensitive) and Luna Suvarna (LS, salt tolerant) were compared with regard to the levels of reactive oxygen species (ROS) to derive clues for their differential salt stress adaptation mechanisms. In our investigation, the tolerant cultivar exhibited longer primary roots, more lateral roots, higher root number leading to increased root biomass, with respect to IR64. It was observed that LS roots maintained higher level of H2O2 in comparison to IR64. The activities of various enzymes involved in enzymatic antioxidant defense mechanism (SOD, CAT, GPX, DHAR and MDHAR) were found to be greater in LS roots. Further, the higher transcript level accumulation of genes encoding ROS generating (RbohA, RbohD and RbohE) and scavenging enzymes (Fe-SOD, Chloroplastic Cu/Zn-SOD, CAT and DHAR) were noticed in the roots of tolerant cultivar, LS. Moreover, the content of other stress markers such as total protein and proline were also elevated in LS roots. While, the expression of proline biosynthesis gene (P5CS) and proline catabolism gene (PDH) was observed to be lower in LS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytical Biochemistry - Volume 550, 1 June 2018, Pages 99-108
Journal: Analytical Biochemistry - Volume 550, 1 June 2018, Pages 99-108
نویسندگان
Shivani Saini, Navdeep Kaur, Pratap Kumar Pati,