Excitation dynamics and relaxation in the major antenna of a marine green alga Bryopsis corticulans
文献类型：期刊论文
| 作者 | Li, Dan-Hong; Wang, Wenda; Zhou, Cuicui; Zhang, Yan; Wang, Peng; Shen, Jian-Ren ; Kuang, Tingyun1; Zhang, Jian-Ping
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| 刊名 | BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
 |
| 出版日期 | 2020 |
| 卷号 | 1861期号:5-6 |
| 关键词 | Carotenoids Marine algae Light harvesting Photoprotection Photosynthesis |
| ISSN号 | 0005-2728 |
| DOI | 10.1016/j.bbabio.2020.148186 |
| 文献子类 | Article |
| 英文摘要 | The light-harvesting complexes II (LHCIIs) of spinach and Bryopsis corticulans as a green alga are similar in structure, but differ in carotenoid (Car) and chlorophyll (Chl) compositions. Carbonyl Cars siphonein (Spn) and siphonaxanthin (Spx) bind to B. corticulans LHCII likely in the sites as a pair of lutein (Lut) molecules bind to spinach LHCII in the central domain. To understand the light-harvesting and photoprotective properties of the algal LHCII, we compared its excitation dynamics and relaxation to those of spinach LHCII been well documented. It was found that B. corticulans LHCII exhibited a substantially longer chlorophyll (Chl) fluorescence lifetime (4.9 ns vs 4.1 ns) and a 60% increase of the fluorescence quantum yield. Photoexcitation populated (3)Car* equally between Spn and Spx in B. corticulans LHCII, whereas predominantly at Lut620 in spinach LHCII. These results prove the functional differences of the LHCIIs with different Car pairs and Chl a/b ratios: B. corticulans LHCII shows the enhanced blue-green light absorption, the alleviated quenching of 1 Chl*, and the dual sites of quenching (3)Chl*, which may facilitate its light-harvesting and photoprotection functions. Moreover, for both types of LHCIIs, the triplet excitation profiles revealed the involvement of extra (3)Car* formation mechanisms besides the conventional Chl-to-Car triplet transfer, which are discussed in relation to the ultrafast processes of (1)Chl* quenching. Our experimental findings will be helpful in deepening the understanding of the light harvesting and photoprotection functions of B. corticulans living in the intertidal zone with dramatically changing light condition. |
| 学科主题 | Biochemistry & Molecular Biology ; Biophysics |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1879-2650 |
| WOS关键词 | LIGHT-HARVESTING-COMPLEX ; ENERGY-TRANSFER ; PHOTOSYSTEM-II ; PERIDININ-CHLOROPHYLL ; TRIPLET FORMATION ; CATION FORMATION ; STRUCTURAL BASIS ; SINGLET FISSION ; EXCITED-STATES ; HIGHER-PLANTS |
| WOS研究方向 | Biochemistry & Molecular Biology ; Biophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000523619700004 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [21673288, 31600191] ; National Key Research and Development Program of China [2017YFA0503700] ; CAS Key Research program for Frontier Science [QYZDY-SSW-SMC003] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21829]  |
| 专题 | 中科院光生物学重点实验室 |
| 作者单位 | 1.Shen, Jian-Ren 2.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China 3.Zhang, Yan 4.[Li, Dan-Hong 5.Wang, Peng 6.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China 7.[Wang, Wenda 8.Zhou, Cuicui |
| 推荐引用方式 GB/T 7714 | Li, Dan-Hong,Wang, Wenda,Zhou, Cuicui,et al. Excitation dynamics and relaxation in the major antenna of a marine green alga Bryopsis corticulans[J]. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,2020,1861(5-6). |
| APA | Li, Dan-Hong.,Wang, Wenda.,Zhou, Cuicui.,Zhang, Yan.,Wang, Peng.,...&Zhang, Jian-Ping.(2020).Excitation dynamics and relaxation in the major antenna of a marine green alga Bryopsis corticulans.BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS,1861(5-6). |
| MLA | Li, Dan-Hong,et al."Excitation dynamics and relaxation in the major antenna of a marine green alga Bryopsis corticulans".BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1861.5-6(2020). |
入库方式： OAI收割
来源：植物研究所
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