کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2049890 1074146 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lack of digalactosyldiacylglycerol increases the sensitivity of Synechocystis sp. PCC 6803 to high light stress
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Lack of digalactosyldiacylglycerol increases the sensitivity of Synechocystis sp. PCC 6803 to high light stress
چکیده انگلیسی

The physiological role of digalactosyldiacylglycerol (DGDG) in photosynthesis was examined using a dgdA mutant of Synechocystis sp. PCC 6803 that is defective in the biosynthesis of DGDG. The dgdA mutant cells showed normal growth under low light (LL) conditions. However, their growth was retarded under high light (HL) conditions and under Ca2+- and/or Cl−-limited conditions compared to wild-type cells. The retardation in growth of the mutant cells was recovered by exogenous supply of DGDG in the growth medium. The dgdA mutant showed increased sensitivity to photoinhibition. Although both photodamage and repair processes of photosynthesis were affected, the repair process was more severely affected than the photodamage process, suggesting that DGDG plays an important role in the photosynthetic repair cycle.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 583, Issue 4, 18 February 2009, Pages 718–722
نویسندگان
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