LiMelkonianRothfelsEtAl2015

Référence

Li, F.-W., Melkonian, M., Rothfels, C.J., Villarreal, J.C., Stevenson, D.W., Graham, S.W., Wong, G.K.-S., Pryer, K.M., Mathews, S. (2015) Phytochrome diversity in green plants and the origin of canonical plant phytochromes. Nature Communications, 6.

Résumé

Phytochromes are red/far-red photoreceptors that play essential roles in diverse plant morphogenetic and physiological responses to light. Despite their functional significance, phytochrome diversity and evolution across photosynthetic eukaryotes remain poorly understood. Using newly available transcriptomic and genomic data we show that canonical plant phytochromes originated in a common ancestor of streptophytes (charophyte algae and land plants). Phytochromes in charophyte algae are structurally diverse, including canonical and non-canonical forms, whereas in land plants, phytochrome structure is highly conserved. Liverworts, hornworts and Selaginella apparently possess a single phytochrome, whereas independent gene duplications occurred within mosses, lycopods, ferns and seed plants, leading to diverse phytochrome families in these clades. Surprisingly, the phytochrome portions of algal and land plant neochromes, a chimera of phytochrome and phototropin, appear to share a common origin. Our results reveal novel phytochrome clades and establish the basis for understanding phytochrome functional evolution in land plants and their algal relatives.

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@ARTICLE { LiMelkonianRothfelsEtAl2015,
    AUTHOR = { Li, F.-W. and Melkonian, M. and Rothfels, C.J. and Villarreal, J.C. and Stevenson, D.W. and Graham, S.W. and Wong, G.K.-S. and Pryer, K.M. and Mathews, S. },
    TITLE = { Phytochrome diversity in green plants and the origin of canonical plant phytochromes },
    JOURNAL = { Nature Communications },
    YEAR = { 2015 },
    VOLUME = { 6 },
    MONTH = { jul },
    ISSN = { 2041-1723 },
    ABSTRACT = { Phytochromes are red/far-red photoreceptors that play essential roles in diverse plant morphogenetic and physiological responses to light. Despite their functional significance, phytochrome diversity and evolution across photosynthetic eukaryotes remain poorly understood. Using newly available transcriptomic and genomic data we show that canonical plant phytochromes originated in a common ancestor of streptophytes (charophyte algae and land plants). Phytochromes in charophyte algae are structurally diverse, including canonical and non-canonical forms, whereas in land plants, phytochrome structure is highly conserved. Liverworts, hornworts and Selaginella apparently possess a single phytochrome, whereas independent gene duplications occurred within mosses, lycopods, ferns and seed plants, leading to diverse phytochrome families in these clades. Surprisingly, the phytochrome portions of algal and land plant neochromes, a chimera of phytochrome and phototropin, appear to share a common origin. Our results reveal novel phytochrome clades and establish the basis for understanding phytochrome functional evolution in land plants and their algal relatives. },
    ARTICLE-NUMBER = { 7852 },
    DOI = { 10.1038/ncomms8852 },
    ORCID-NUMBERS = { Graham, Sean/0000-0001-8209-5231 Mathews, Sarah/0000-0002-5518-7541 Wong, Gane Ka-Shu/0000-0001-6108-5560 Rothfels, Carl/0000-0002-6605-1770 },
    RESEARCHERID-NUMBERS = { Graham, Sean/L-3944-2014 Mathews, Sarah/A-6513-2015 Wong, Gane Ka-Shu/G-5784-2013 },
    UNIQUE-ID = { ISI:000358861500004 },
}

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