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Nat Commun. 2014 May 28;5:3978. doi: 10.1038/ncomms4978.

Klebsormidium flaccidum genome reveals primary factors for plant terrestrial adaptation.

Author information

1
1] Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan [2] CREST, Japan Science and Technology Agency, Yokohama City, Kanagawa 226-8501, Japan.
2
Section of Microbial Genomics and Ecology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-0034, Japan.
3
National Institute of Genetics, Yata 1111, Mishima, Shizuoka 411-8540, Japan.
4
Department of Biological Information, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan.
5
Center for Sustainable Resource Science, RIKEN, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan.
6
Department of Environmental Life Sciences, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai 980-8577, Japan.
7
Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
8
1] CREST, Japan Science and Technology Agency, Yokohama City, Kanagawa 226-8501, Japan [2] Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
9
Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.
10
Faculty of Science, Shizuoka University, 836 Oya, Suruga-ku, Shizuoka 422-8529, Japan.
11
Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan.
12
1] Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan [2] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan [3] Department of Biological Sciences, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan.
13
Department of Biological Sciences, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan.
14
Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba 292-0818, Japan.
15
1] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan [2] Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba 292-0818, Japan.
16
1] CREST, Japan Science and Technology Agency, Yokohama City, Kanagawa 226-8501, Japan [2] Department of Biological Information, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan [3] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.
17
1] Center for Biological Resources and Informatics, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan [2] CREST, Japan Science and Technology Agency, Yokohama City, Kanagawa 226-8501, Japan [3] Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan [4] Department of Biological Sciences, Tokyo Institute of Technology, Yokohama City, Kanagawa 226-8501, Japan.

Abstract

The colonization of land by plants was a key event in the evolution of life. Here we report the draft genome sequence of the filamentous terrestrial alga Klebsormidium flaccidum (Division Charophyta, Order Klebsormidiales) to elucidate the early transition step from aquatic algae to land plants. Comparison of the genome sequence with that of other algae and land plants demonstrate that K. flaccidum acquired many genes specific to land plants. We demonstrate that K. flaccidum indeed produces several plant hormones and homologues of some of the signalling intermediates required for hormone actions in higher plants. The K. flaccidum genome also encodes a primitive system to protect against the harmful effects of high-intensity light. The presence of these plant-related systems in K. flaccidum suggests that, during evolution, this alga acquired the fundamental machinery required for adaptation to terrestrial environments.

PMID:
24865297
PMCID:
PMC4052687
DOI:
10.1038/ncomms4978
[Indexed for MEDLINE]
Free PMC Article

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