کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2056006 1075795 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Stay-Green Rice like (SGRL) gene regulates chlorophyll degradation in rice
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
The Stay-Green Rice like (SGRL) gene regulates chlorophyll degradation in rice
چکیده انگلیسی

The Stay-Green Rice (SGR) protein is encoded by the SGR gene and has been shown to affect chlorophyll (Chl) degradation during natural and dark-induced leaf senescence. An SGR homologue, SGR-like (SGRL), has been detected in many plant species. We show that SGRL is primarily expressed in green tissues, and is significantly downregulated in rice leaves undergoing natural and dark-induced senescence. As the light intensity increases during the natural photoperiod, the intensity of SGRL expression declines while that of SGR expression increases. Overexpression of SGRL reduces the levels of Chl and Chl-binding proteins in leaves, and accelerates their degradation in dark-induced senescence leaves in rice. Our results suggest that the SGRL protein is also involved in Chl degradation. The relationship between SGRL and SGR and their effects on the degradation of the light-harvesting Chl a/b-binding protein are also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 170, Issue 15, 15 October 2013, Pages 1367–1373
نویسندگان
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