Genome encode analyses reveal the basis of convergent evolution of fleshy fruit ripening
Lü, Peitao (Chinese University of Hong Kong.School of Life Sciences)
Yu, Sheng (Chinese University of Hong Kong.School of Life Sciences)
Zhu, Ning (Chinese University of Hong Kong.School of Life Sciences)
Chen, Yun-Ru (Chinese University of Hong Kong.School of Life Sciences)
Zhou, Biyan (South China Agricultural University. College of Horticulture)
Pan, Yu (South China Agricultural University. College of Horticulture)
Tzeng, David (Chinese University of Hong Kong.School of Life Sciences)
Fabi, Joao Paulo (Universidade de São Paulo. Departamento de Alimentos e Nutrição Experimental)
Argyris, Jason (Centre de Recerca en Agrigenòmica)
Garcia-Mas, Jordi (Centre de Recerca en Agrigenòmica)
Ye, Nenghui (Hong Kong Baptist University. Department of Biology)
Zhang, Jianhua (Hong Kong Baptist University. Department of Biology)
Grierson, Donald (University of Nottingham. School of Crop Sciences)
Xiang, Jenny (Weill Cornell Medicine)
Fei, Zhangjun (Boyce Thompson Institute)
Giovannoni, James (Boyce Thompson Institute)
Zhong, Silin (Chinese University of Hong Kong.School of Life Sciences)

Date:	2018
Abstract:	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.
Grants:	Ministerio de Economía y Competitividad AGL2015-64625-C2-1-R Ministerio de Economía y Competitividad SEV-2015-0533
Note:	Altres ajuts: Generalitat de Catalunya/CERCA Programme
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Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Published in:	Nature plants, Vol. 4 (Oct. 2018) , p. 784-791, ISSN 2055-0278

DOI: 10.1038/s41477-018-0249-z

Postprint 24 p, 591.8 KB

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