LiVillarrealKellyEtAl2014

Référence

Li, F.-W., Villarreal, J.C., Kelly, S., Rothfels, C.J., Melkonian, M., Frangedakis, E., Ruhsam, M., Sigel, E.M., Der, J.P., Pittermann, J., Burge, D.O., Pokornyk, L., Larsson, A., Chen, T., Weststrand, S., Thomas, P., Carpenter, E., Zhang, Y., Tian, Z., Chen, L., Yan, Z., Zhu, Y., Sun, X., Wang, J., Stevenson, D.W., Crandall-Stotler, B.J., Shaw, A. J., Deyholos, Mi.K., Soltis, D.E., Graham, S.W., Windham, M.D., Langdale, J.A., Wong, G.K.-S., Mathews, S., Pryer, K.M. (2014) Horizontal transfer of an adaptive chimeric photoreceptor from bryophytes to ferns. Proceedings of the National Academy of Sciences of the United States of America, 111(18):6672-6677.

Résumé

Ferns are well known for their shade-dwelling habits. Their ability to thrive under low-light conditions has been linked to the evolution of a novel chimeric photoreceptor-neochrome-that fuses red-sensing phytochrome and blue-sensing phototropin modules into a single gene, thereby optimizing phototropic responses. Despite being implicated in facilitating the diversification of modern ferns, the origin of neochrome has remained a mystery. We present evidence for neochrome in hornworts (a bryophyte lineage) and demonstrate that ferns acquired neochrome from hornworts via horizontal gene transfer (HGT). Fern neochromes are nested within hornwort neochromes in our large-scale phylogenetic reconstructions of phototropin and phytochrome gene families. Divergence date estimates further support the HGT hypothesis, with fern and hornwort neochromes diverging 179 Mya, long after the split between the two plant lineages (at least 400 Mya). By analyzing the draft genome of the hornwort Anthoceros punctatus, we also discovered a previously unidentified phototropin gene that likely represents the ancestral lineage of the neochrome phototropin module. Thus, a neochrome originating in hornworts was transferred horizontally to ferns, where it may have played a significant role in the diversification of modern ferns.

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@ARTICLE { LiVillarrealKellyEtAl2014,
    AUTHOR = { Li, F.-W. and Villarreal, J.C. and Kelly, S. and Rothfels, C.J. and Melkonian, M. and Frangedakis, E. and Ruhsam, M. and Sigel, E.M. and Der, J.P. and Pittermann, J. and Burge, D.O. and Pokornyk, L. and Larsson, A. and Chen, T. and Weststrand, S. and Thomas, P. and Carpenter, E. and Zhang, Y. and Tian, Z. and Chen, L. and Yan, Z. and Zhu, Y. and Sun, X. and Wang, J. and Stevenson, D.W. and Crandall-Stotler, B.J. and Shaw, A. J. and Deyholos, Mi.K. and Soltis, D.E. and Graham, S.W. and Windham, M.D. and Langdale, J.A. and Wong, G.K.-S. and Mathews, S. and Pryer, K.M. },
    TITLE = { Horizontal transfer of an adaptive chimeric photoreceptor from bryophytes to ferns },
    JOURNAL = { Proceedings of the National Academy of Sciences of the United States of America },
    YEAR = { 2014 },
    VOLUME = { 111 },
    NUMBER = { 18 },
    PAGES = { 6672-6677 },
    MONTH = { may },
    ISSN = { 0027-8424 },
    ABSTRACT = { Ferns are well known for their shade-dwelling habits. Their ability to thrive under low-light conditions has been linked to the evolution of a novel chimeric photoreceptor-neochrome-that fuses red-sensing phytochrome and blue-sensing phototropin modules into a single gene, thereby optimizing phototropic responses. Despite being implicated in facilitating the diversification of modern ferns, the origin of neochrome has remained a mystery. We present evidence for neochrome in hornworts (a bryophyte lineage) and demonstrate that ferns acquired neochrome from hornworts via horizontal gene transfer (HGT). Fern neochromes are nested within hornwort neochromes in our large-scale phylogenetic reconstructions of phototropin and phytochrome gene families. Divergence date estimates further support the HGT hypothesis, with fern and hornwort neochromes diverging 179 Mya, long after the split between the two plant lineages (at least 400 Mya). By analyzing the draft genome of the hornwort Anthoceros punctatus, we also discovered a previously unidentified phototropin gene that likely represents the ancestral lineage of the neochrome phototropin module. Thus, a neochrome originating in hornworts was transferred horizontally to ferns, where it may have played a significant role in the diversification of modern ferns. },
    DOI = { 10.1073/pnas.1319929111 },
    ORCID-NUMBERS = { Kelly, Steven/0000-0001-8583-5362 Wong, Gane Ka-Shu/0000-0001-6108-5560 Mathews, Sarah/0000-0002-5518-7541 Wang, Jun/0000-0002-8540-8931 Graham, Sean/0000-0001-8209-5231 Larsson, Anders/0000-0002-2096-8102 Der, Joshua/0000-0001-9668-2525 Wang, Jun/0000-0002-2113-5874 Ruhsam, Markus/0000-0002-8457-345X },
    RESEARCHERID-NUMBERS = { Kelly, Steven/F-7237-2011 Pokorny, Lisa/H-1233-2013 Wong, Gane Ka-Shu/G-5784-2013 Mathews, Sarah/A-6513-2015 Wang, Jun/C-8434-2016 Graham, Sean/L-3944-2014 },
    UNIQUE-ID = { ISI:000335477300046 },
}

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