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The genome of Aechmea fasciata provides insights into the evolution of tank epiphytic habits and ethylene-induced flowering

文献类型： 外文期刊

作者： Li, Zhiying 1 ; Wang, Jiabin 1 ; Zhang, Xuanbing 5 ; Zhu, GuoPeng 5 ; Fu, Yunliu 1 ; Jing, Yonglin 1 ; Huang, Bilan 1 ; Wang, Xiaobing 1 ; Meng, Chunyang 1 ; Yang, Qingquan 1 ; Xu, Li 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Crop Genet Resources, Danzhou 571737, Hainan, Peoples R China

2.Key Lab Crop Gene Resources & Germplasm Enhanceme, Minist Agr, Danzhou 571737, Hainan, Peoples R China

3.Hainan Prov Key Lab Trop Crops Germplasm Resource, Danzhou 571737, Hainan, Peoples R China

4.Natl Gene Bank Trop Crops, Danzhou 571700, Hainan, Peoples R China

5.Hainan Univ, Coll Hort & Landscape Architecture, Haikou 570228, Hainan, Peoples R China

期刊名称：COMMUNICATIONS BIOLOGY （ 影响因子：6.548； 五年影响因子：6.816 ）

ISSN：

年卷期： 2022 年 5 卷 1 期

页码：

收录情况： SCI

摘要： Aechmea fasciata is one of the most popular bromeliads and bears a water-impounding tank with a vase-like rosette. The tank habit is a key innovation that has promoted diversity among bromeliads. To reveal the genomic basis of tank habit formation and ethylene-induced flowering, we sequenced the genome of A. fasciata and assembled 352 Mb of sequences into 24 chromosomes. Comparative genomic analysis showed that the chromosomes experienced at least two fissions and two fusions from the ancestral genome of A. fasciata and Ananas comosus. The gibberellin receptor gene GID1C-like was duplicated by a segmental duplication event. This duplication may affect GA signalling and promote rosette expansion, which may permit water-impounding tank formation. During ethylene-induced flowering, AfFTL2 expression is induced and targets the EIN3 binding site 'ATGTAC' by AfEIL1-like. The data provided here will serve as an important resource for studying the evolution and mechanisms underlying flowering time regulation in bromeliads.

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