کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2056767 1075840 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aluminum stress increases carbon-centered radicals in soybean roots
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Aluminum stress increases carbon-centered radicals in soybean roots
چکیده انگلیسی

The formation of radical species was examined in roots of soybean seedlings exposed to aluminum (Al). Electron spin resonance (ESR) spectra of root homogenates with the spin-trapping reagent 5-diethoxyphosphoryl-5-methyl-1-pyrroline-N-oxide (DEPMPO) indicated the presence of carbon-centered radicals in plants not exposed to Al. Plants exposed to 50 μM Al showed a similar spectrum, with increased signal intensity. These radicals were likely produced through a H-atom abstraction reaction by hydroxyl (OH) radicals, the synthesis of which was initiated by the formation of superoxide (O2−) anions. The increased production of the carbon-centered radicals may be responsible for the lipid peroxidation in Al-treated roots.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 167, Issue 15, 15 October 2010, Pages 1316–1319
نویسندگان
, , ,