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Loquat (Eriobotrya japonica (Thunb.) Lindl) population genomics suggests a two‐staged domestication and identifies genes showing convergence/parallel selective sweeps with apple or peach.

Authors :
Wang, Yunsheng
Paterson, Andrew H.
Source :
Plant Journal; May2021, Vol. 106 Issue 4, p942-952, 11p
Publication Year :
2021

Abstract

SUMMARY: Crop domestication and evolution represent key fields of plant and genetics research. Here, we re‐sequenced and analyzed whole genome data from 51 wild accessions and 53 representative cultivars of Eriobotrya japonica, an important semi‐subtropical fruit crop. Population genomics analysis suggested that modern cultivated E. japonica experienced a two‐staged domestication fitting the "marginality model," being initially domesticated in west‐northern Hubei province from a mono‐phylogenetic wild progenitor, then refined mainly in Jiangsu, Zhejiang and Fujian provinces of China. Cultivated E. japonica has experienced little reduction in genome‐wide nucleotide polymorphism compared with wild forms. Genes responsible for sugar biosynthesis were enriched in regions harboring putative selective sweeps. An approach based on co‐clustering into gene families and evaluating chromosome colinearity of orthologous and paralogous genes was used to identify convergent/parallel selective sweeps among different crops. Specifically, more than one hundred of orthologs and paralogs undergoing selective sweeps were identified between loquat, apple and peach, among which 14 encoded "UDP glycosyltransferase 1." In sum, the study not only provided valuable information for breeding of E. japonica, but also enriched knowledge of crop domestication. Significance Statement: In this study, loquat was found to have experienced a two‐staged domestication fitting the "marginality model." Some convergent/parallel selective sweeps among loquat, apple and peach were identified by using an approach based on co‐clustering into gene families and evaluating chromosome colinearity of orthologous and paralogous genes among different crops. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09607412
Volume :
106
Issue :
4
Database :
Complementary Index
Journal :
Plant Journal
Publication Type :
Academic Journal
Accession number :
150672256
Full Text :
https://doi.org/10.1111/tpj.15209