کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10795692 | 1052592 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel type of red-shifted chlorophyll a antenna complex from Chromera velia. I. Physiological relevance and functional connection to photosystems
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کلمات کلیدی
ETRFCPChromera veliaphotosystem I (II)LHC - برخورد دهنده بزرگ هادرون photosynthetically active radiation (400–700 nm) - تابش فعال فتوسنتزی (400-700 نانومتر)Par - توسطNon-photochemical quenching - خنک سازی غیر فتوشیمیاییRoom temperature - دمای اتاقChromatic adaptation - سازگاری کروماتیکPhotosystem II - فتوسیستم 2Light harvesting complex - مجتمع برداشت نورLight-harvesting complex - مجتمع جمع آوری نورElectron transport rate - نرخ انتقال الکترونChla - چلاChlorophyll a - کلروفیل a
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Here, we show that the accumulation of Red-CLH complex under red light represents a slow acclimation process (days) that is reversible with much faster kinetics (hours) under blue light. This chromatic adaptation allows C. velia to maintain all important parameters of photosynthesis constant under both light colors. We further demonstrated that the C. velia Red-CLH complex is assembled from a 17Â kDa antenna protein and is functionally connected to photosystem II as it shows variability of chlorophyll fluorescence. Red-CLH also serves as an additional locus for non-photochemical quenching. Although overall rates of oxygen evolution and carbon fixation were similar for both blue and red light conditions, the presence of Red-CLH in C. velia cells increases the light harvesting potential of photosystem II, which manifested as a doubled oxygen evolution rate at illumination above 695Â nm. This data demonstrates a remarkable long-term remodeling of C. velia light-harvesting system according to light quality and suggests physiological significance of 'red' antenna complexes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - Bioenergetics - Volume 1837, Issue 6, June 2014, Pages 734-743
Journal: Biochimica et Biophysica Acta (BBA) - Bioenergetics - Volume 1837, Issue 6, June 2014, Pages 734-743
نویسندگان
Eva Kotabová, Jana JareÅ¡ová, Radek KaÅa, Roman Sobotka, David BÃna, OndÅej PráÅ¡il,