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Evolution of Green Plants Accompanied Changes in Light-Harvesting Systems

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タイトル: Evolution of Green Plants Accompanied Changes in Light-Harvesting Systems
著者: Kunugi, Motoshi 著作を一覧する
Satoh, Soichirou 著作を一覧する
Ihara, Kunio 著作を一覧する
Shibata, Kensuke 著作を一覧する
Yamagishi, Yukimasa 著作を一覧する
Kogame, Kazuhiro 著作を一覧する
Obokata, Junichi 著作を一覧する
Takabayashi, Atsushi 著作を一覧する
Tanaka, Ayumi 著作を一覧する
キーワード: Evolution
Green algae
Land plants
Light adaptation
発行日: 2016年 4月 6日
出版者: Oxford University Press
誌名: Plant and Cell Physiology
巻: 57
号: 6
開始ページ: 1231
終了ページ: 1243
出版社 DOI: 10.1093/pcp/pcw071
抄録: Photosynthetic organisms have various pigments enabling them to adapt to various light environments. Green plants are divided into two groups: streptophytes and chlorophytes. Streptophytes include some freshwater green algae and land plants, while chlorophytes comprise the other freshwater green algae and seawater green algae. The environmental conditions driving the divergence of green plants into these two groups and the changes in photosynthetic properties accompanying their evolution remain unknown. Here, we separated the core antennae of PSI and the peripheral antennae [light-harvesting complexes (LHCs)] in green plants by green-native gel electrophoresis and determined their pigment compositions. Freshwater green algae and land plants have high Chl a/b ratios, with most Chl b existing in LHCs. In contrast, seawater green algae have low Chl a/b ratios. In addition, Chl b exists not only in LHCs but also in PSI core antennae in these organisms, a situation beneficial for survival in deep seawater, where blue-green light is the dominant light source. Finally, low-energy Chl (red Chl) of PSI was detected in freshwater green algae and land plants, but not in seawater green algae. We thus conclude that the different level of Chl b accumulation in core antennae and differences in PSI red Chl between freshwater and seawater green algae are evolutionary adaptations of these algae to their habitats, especially to high-or low-light environments.
Rights: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Plant and Cell Physiology following peer review. The version of record Plant Cell Physiol. 57(6): 1231–1243 (2016) doi: 10.1093/pcp/pcw071 is available online at
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 高林 厚史


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