کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
575924 | 1453061 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Elevation of arginine decarboxylase-dependent putrescine production enhances aluminum tolerance by decreasing aluminum retention in root cell walls of wheat
ترجمه فارسی عنوان
افزایش تولید بتدرسین وابسته به دکرکسی سیلاز وابسته به آرژینین، تحمل آلومینیوم را با کاهش ضریب آلومینیوم در دیواره های ریشه سلولی گندم افزایش می دهد
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کلمات کلیدی
HC1ADCHemicellulose 1SPDODCOrnithine decarboxylaseHC2SPMPCA - PCAarginine decarboxylase - آرژینین دکربوکسیلازAluminum - آلومینیوم Spermine - اسپرمSpermidine - اسپرمیدینPerchloric acid - اسید پرکلریکGalacturonic acid - اسید گالاکاتورونیکAluminum tolerance - تحمل آلومینیومCell wall - دیوارهٔ یاختهPUT - قرار دادنputrescine - قرار دادنPolyamine - پلی آمینGalA - گالاWheat - گندم
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
Aluminum (Al) stress induces putrescine (Put) accumulation in several plants and this response is proposed to alleviate Al toxicity. However, the mechanisms underlying this alleviation remain largely unknown. Here, we show that exposure to Al clearly increases Put accumulation in the roots of wheat plants (Triticum aestivum L. 'Xi Aimai-1') and that this was accompanied by significant increase in the activity of arginine decarboxylase (ADC), a Put producing enzyme. Application of an ADC inhibitor (d-arginine) terminated the Al-induced Put accumulation, indicating that increased ADC activity may be responsible for the increase in Put accumulation in response to Al. The d-arginine treatment also increased the Al-induced accumulation of cell wall polysaccharides and the degree of pectin demethylation in wheat roots. Thus, it elevated Al retention in cell walls and exacerbated Al accumulation in roots, both of which aggravate Al toxicity in wheat plants. The opposite effects were true for exogenous Put application. These results suggest that ADC-dependent Put accumulation plays important roles in providing protection against Al toxicity in wheat plants through decreasing cell wall polysaccharides and increasing the degree of pectin methylation, thus decreasing Al retention in the cell walls.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 299, 15 December 2015, Pages 280-288
Journal: Journal of Hazardous Materials - Volume 299, 15 December 2015, Pages 280-288
نویسندگان
Yan Yu, Chongwei Jin, Chengliang Sun, Jinghong Wang, Yiquan Ye, Lingli Lu, Xianyong Lin,