Fern genomes elucidate land plant evolution and cyanobacterial symbioses.
Fern genomes elucidate land plant evolution and cyanobacterial symbioses.
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DOI:
10.1038/s41477-018-0188-8
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发表时间:
2018-07
期刊:
影响因子:
18
通讯作者:
Pryer KM
中科院分区:
文献类型:
--
作者:
Li FW;Brouwer P;Carretero-Paulet L;Cheng S;de Vries J;Delaux PM;Eily A;Koppers N;Kuo LY;Li Z;Simenc M;Small I;Wafula E;Angarita S;Barker MS;Bräutigam A;dePamphilis C;Gould S;Hosmani PS;Huang YM;Huettel B;Kato Y;Liu X;Maere S;McDowell R;Mueller LA;Nierop KGJ;Rensing SA;Robison T;Rothfels CJ;Sigel EM;Song Y;Timilsena PR;Van de Peer Y;Wang H;Wilhelmsson PKI;Wolf PG;Xu X;Der JP;Schluepmann H;Wong GK;Pryer KM
Ferns are the closest sister group to all seed plants, yet little is known about their genomes other than that they are generally colossal. Here, we report on the genomes of Azolla filiculoides and Salvinia cucullata (Salviniales) and present evidence for episodic whole-genome duplication in ferns—one at the base of ‘core leptosporangiates’ and one specific to Azolla. One fern-specific gene that we identified, recently shown to confer high insect resistance, seems to have been derived from bacteria through horizontal gene transfer. Azolla coexists in a unique symbiosis with N2-fixing cyanobacteria, and we demonstrate a clear pattern of cospeciation between the two partners. Furthermore, the Azolla genome lacks genes that are common to arbuscular mycorrhizal and root nodule symbioses, and we identify several putative transporter genes specific to Azolla–cyanobacterial symbiosis. These genomic resources will help in exploring the biotechnological potential of Azolla and address fundamental questions in the evolution of plant life. The genomes of two fern species, Azolla filiculoides and Salvinia cucullata, are reported and provide insights into fern-specific whole-genome duplications, fern-specific insect-resistant gene evolution and fern–cyanobacterial symbiosis.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
4.9
作者:
Bao W;Kojima KK;Kohany O
通讯作者:
Kohany O
影响因子:
7.2
作者:
Cheng, Shifeng;Gutmann, Bernard;Small, Ian
通讯作者:
Small, Ian
影响因子:
6.5
作者:
Church SH;Ryan JF;Dunn CW
通讯作者:
Dunn CW
影响因子:
3.2
作者:
Cohen, MF;Yamasaki, H
通讯作者:
Yamasaki, H