Unique Peripheral Antennas in the Photosystems of the Streptophyte Alga Mesostigma viride

Aso, Michiki; Matsumae, Renon; Tanaka, Ayumi; Tanaka, Ryouichi; Takabayashi, Atsushi

Unique Peripheral Antennas in the Photosystems of the Streptophyte Alga Mesostigma viride

Aso, Michiki; Matsumae, Renon; Tanaka, Ayumi et al.

Plant and Cell Physiology, 2021, 62(3), 436-446

Permalink : https://hdl.handle.net/2115/83775

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アクセス権	open access
URI	https://hdl.handle.net/2115/83775
タイトル	Unique Peripheral Antennas in the Photosystems of the Streptophyte Alga Mesostigma viride
著者	Aso, Michiki ; Matsumae, Renon ; Tanaka, Ayumi ; Tanaka, Ryouichi ; Takabayashi, Atsushi
著者名 Aso, Michiki
著者名 Matsumae, Renon
e-Rad_Researcher 10197402 著者名 Tanaka, Ayumi
e-Rad_Researcher 20311516 著者名 Tanaka, Ryouichi
e-Rad_Researcher 90546417 著者名 Takabayashi, Atsushi
言語	英語
キーワード	Green algae
	Iso-seq
	Mesostigma viride
	Native-PAGE
	Photosystem
発行日	2021-01-08
出版者	Oxford University Press
収録物名	Plant and Cell Physiology
巻(号)	62(3)
ページ	436-446
抄録	Land plants evolved from a single group of streptophyte algae. One of the key factors needed for adaptation to a land environment is the modification in the peripheral antenna systems of photosystems (PSs). Here, the PSs of Mesostigma viride, one of the earliest-branching streptophyte algae, were analyzed to gain insight into their evolution. Isoform sequencing and phylogenetic analyses of light-harvesting complexes (LHCs) revealed that M. viride possesses three algae-specific LHCs, including algae-type LHCA2, LHCA9 and LHCP, while the streptophyte-specific LHCB6 was not identified. These data suggest that the acquisition of LHCB6 and the loss of algae-type LHCs occurred after the M. viride lineage branched off from other streptophytes. Clear-native (CN)-polyacrylamide gel electrophoresis (PAGE) resolved the photosynthetic complexes, including the PSI-PSII megacomplex, PSII-LHCII, two PSI-LHCI-LHCIIs, PSI-LHCI and the LHCII trimer. Results indicated that the higher-molecular weight PSI-LHCI-LHCII likely had more LHCII than the lower-molecular weight one, a unique feature of M. viride PSs. CN-PAGE coupled with mass spectrometry strongly suggested that the LHCP was bound to PSII-LHCII, while the algae-type LHCA2 and LHCA9 were bound to PSI-LHCI, both of which are different from those in land plants. Results of the present study strongly suggest that M. viride PSs possess unique features that were inherited from a common ancestor of streptophyte and chlorophyte algae.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a pre-copyedited, author-produced version of an article accepted for publication in Plant and Cell Physiology following peer review. The version of record is available online at: https://academic.oup.com/pcp/article/62/3/436/6070176 , http://doi.org/10.1093/pcp/pcaa172.
PISSN	0032-0781
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1093/pcp/pcaa172