Genome encode analyses reveal the basis of convergent evolution of fleshy fruit ripening

Fleshy fruits using ethylene to regulate ripening have developed multiple times in the history of angiosperms, presenting a clear case of convergent evolution whose molecular basis remains largely unknown. Analysis of the fruitENCODE data consisting of 361 transcriptome, 71 accessible chromatin, 147...

Descripción completa

Detalles Bibliográficos
Autores: Lü, Peitao, Yu, Sheng, Zhu, Ning, Chen, Yun-Ru, Zhou, Biyan, Pan, Yu, Tzeng, David, Fabi, Joao Paulo, Argyris, Jason, García-Mas, Jordi, Ye, Nenghui, Zhang, Jianhua, Grierson, Donald, Xiang, Jenny, Fei, Zhangjun, Giovannoni, James J., Zhong, Silin
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/248822
Acceso en línea:http://hdl.handle.net/10261/248822
Access Level:acceso abierto
Descripción
Sumario:Fleshy fruits using ethylene to regulate ripening have developed multiple times in the history of angiosperms, presenting a clear case of convergent evolution whose molecular basis remains largely unknown. Analysis of the fruitENCODE data consisting of 361 transcriptome, 71 accessible chromatin, 147 histone and 45 DNA methylation profiles reveals three types of transcriptional feedback circuits controlling ethylene-dependent fruit ripening. These circuits are evolved from senescence or floral organ identity pathways in the ancestral angiosperms either by neofunctionalisation or repurposing pre-existing genes. The epigenome, H3K27me3 in particular, has played a conserved role in restricting ripening genes and their orthologues in dry and ethylene-independent fleshy fruits. Our findings suggest that evolution of ripening is constrained by limited hormone molecules and genetic and epigenetic materials, and whole-genome duplications have provided opportunities for plants to successfully circumvent these limitations.

Similares en LA Referencia