کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10876940 | 1075890 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Post-illumination-related loss of photochemical efficiency of Photosystem II and degradation of the D1 protein are temperature-dependent
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Post-illumination-related loss of photochemical efficiency of Photosystem II and degradation of the D1 protein are temperature-dependent Post-illumination-related loss of photochemical efficiency of Photosystem II and degradation of the D1 protein are temperature-dependent](/preview/png/10876940.png)
چکیده انگلیسی
Photosystem II (PSII) photochemical efficiency (chlorophyll fluorescence ratio Fv/Fm) was recorded in vivo in Synechocystis 6803 during high light illumination and during a subsequent shift of the cells to darkness. A continuing decrease in the Fv/Fm ratio was observed even after the cells were transferred to darkness, provided the temperature was high enough. The decrease in the PSII efficiency after the shifting of the cells to darkness correlated directly with the loss of the D1 protein under different temperatures, suggesting that temperature-dependent proteolysis of the D1 protein in darkness induces the loss of PSII photochemical efficiency under these conditions. Furthermore, the amount of FtsH protease was found to increase during the high light treatment. This observation suggests that the synthesis of the FtsH protein is a light-regulated process and that this protease most probably has a key role in an efficient degradation of the D1 protein even under post-illuminative conditions, provided the temperature is high enough to prevent the initial reversible steps of photoinhibition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 162, Issue 11, 15 November 2005, Pages 1246-1253
Journal: Journal of Plant Physiology - Volume 162, Issue 11, 15 November 2005, Pages 1246-1253
نویسندگان
Munna Singh, Yasusi Yamamoto, Kimiyuki Satoh, Eva-Mari Aro, Eira Kanervo,