The Genome of Black Cottonwood, Populus trichocarpa (Torr. & Gray)
2006; American Association for the Advancement of Science; Volume: 313; Issue: 5793 Linguagem: Inglês
10.1126/science.1128691
ISSN1095-9203
AutoresGerald A. Tuskan, Stephen DiFazio, Stefan Jansson, Jöerg Bohlmann, Igor V. Grigoriev, Uffe Hellsten, Nicholas H. Putnam, Steven Ralph, Stéphane Rombauts, Asaf Salamov, Jacqueline E. Schein, Lieven Sterck, Andrea Aerts, R. R. Bhalerao, Rishikesh P. Bhalerao, Damien Blaudez, Wout Boerjan, Annick Brun, Amy M. Brunner, Victor Busov, Malcolm M. Campbell, John E. Carlson, Michel Chalot, Jarrod Chapman, G.-L. Chen, Dawn Cooper, Pedro M. Coutinho, Jérémy Couturier, Sarah F. Covert, Quentin Cronk, Richard P. Cunningham, John M. Davis, Sven Degroeve, Annabelle Déjardin, Claude W. dePamphilis, John C. Detter, Bill Dirks, Inna Dubchak, Sébastien Duplessis, Jürgen Ehlting, B. E. Ellis, Karla Gendler, David Goodstein, Michael Gribskov, Jane Grimwood, Andrew Groover, Lee E. Gunter, Björn Hamberger, Berthold Heinze, Ykä Helariutta, Bernard Henrissat, Dawn H. Nagel, Robert A. Holt, Wenjiang Huang, Nurul Islam‐Faridi, Steven J.M. Jones, Matthew W. Jones-Rhoades, Richard A. Jorgensen, Chandrashekhar P. Joshi, Jaakko Kangasjärvi, Jan Karlsson, Colin T. Kelleher, Robert B. Kirkpatrick, Matias Kirst, Annegret Kohler, Udaya C. Kalluri, Frank W. Larimer, Jim Leebens‐Mack, Jean‐Charles Leplé, Philip LoCascio, Yonggen Lou, Susan Lucas, Francis Martin, Barbara Montanini, Carolyn A. Napoli, David R. Nelson, C. Dana Nelson, Kaisa Nieminen, Ove Nilsson, V. Pereda, G. F. Peter, Ryan N. Philippe, Gilles Pilate, Alexandre Poliakov, Jane Razumovskaya, Paul Richardson, Cécile Rinaldi, Kermit Ritland, Pierre Rouzé, Dmitriy Ryaboy, Jeremy Schmutz, Jarmo Schrader, Bo Segerman, H. Shin, Asim Siddiqui, Fredrik Sterky, Astrid Terry, Chung‐Jui Tsai, Ed Uberbacher, Per Unneberg, Jorma Vahala, Kerr Wall, Susan R. Wessler, George Yang, T. M. Yin, Carl J. Douglas, Marco A. Marra, Göran Sandberg, Yves Van de Peer, Daniel S. Rokhsar,
Tópico(s)Plant Reproductive Biology
ResumoWe report the draft genome of the black cottonwood tree, Populus trichocarpa . Integration of shotgun sequence assembly with genetic mapping enabled chromosome-scale reconstruction of the genome. More than 45,000 putative protein-coding genes were identified. Analysis of the assembled genome revealed a whole-genome duplication event; about 8000 pairs of duplicated genes from that event survived in the Populus genome. A second, older duplication event is indistinguishably coincident with the divergence of the Populus and Arabidopsis lineages. Nucleotide substitution, tandem gene duplication, and gross chromosomal rearrangement appear to proceed substantially more slowly in Populus than in Arabidopsis. Populus has more protein-coding genes than Arabidopsis , ranging on average from 1.4 to 1.6 putative Populus homologs for each Arabidopsis gene. However, the relative frequency of protein domains in the two genomes is similar. Overrepresented exceptions in Populus include genes associated with lignocellulosic wall biosynthesis, meristem development, disease resistance, and metabolite transport.
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