Original Research ARTICLE
Genetic diversity and domestication footprints of Chinese cherry (Cerasus pseudocerasus (Lindl.) G.Don) as revealed by nuclear microsatellites
- 1Institute of Pomology and Olericulture, Sichuan Agricultural University, China
- 2College of Horticulture, Sichuan Agricultural University, China
Chinese cherry (Cerasus pseudocerasus (Lindl.) G.Don) is a commercially important fruit crop in China, but its structure patterns and domestication history remain imprecise. To address these questions, we estimated the genetic structure and domestication history of Chinese cherry using 19 nuclear microsatellite markers and 650 representative accessions (including 118 Cerasus relatives) selected throughout their natural eco-geographical distributions. Our structure analyses detected no genetic contribution from Cerasus relatives to the evolution history of Chinese cherry. A separate genetic structure was detected in wild Chinese cherries and rough geographical structures were observed in cultivated Chinese cherries. One wild (wild Chinese cherry, WC) and two cultivated (cultivated Chinese cherry, CC1 and CC2) genetic clusters were defined. Our approximate Bayesian computation analyses supported an independent domestication history with two domestication events for CC1 and CC2, happening about 3900 and 2200 years ago, respectively. Moderate loss of genetic diversity, over thousand-year domestication bottlenecks and divergent domestication in fruit traits were also detected in cultivated Chinese cherries, which is highly correlated to long-term clonal propagation and different domestication trends and preferences. Our study is the first to comprehensively and systematically investigate the structure patterns and domestication history for Chinese cherry, providing important references for revealing the evolution and domestication history of perennial woody fruit trees.
Keywords: Approximate Bayesian Computation, Chinese cherry (Cerasus pseudocerasus (Lindl.) G.Don), Genetic bottlenecks, independent domestication, microsatellite markers
Received: 02 Nov 2017;
Accepted: 09 Feb 2018.
Edited by:Nicolas Rispail, Consejo Superior de Investigaciones Científicas (CSIC), Spain
Reviewed by:Rubens O. Nodari, Universidade Federal de Santa Catarina, Brazil
Klaus Eimert, Hochschule Geisenheim University, Germany
Copyright: © 2018 Zhang, Chen, Wang, CHEN, Sun, Luo, Zhang, Tang and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Prof. Xiaorong Wang, Sichuan Agricultural University, Institute of Pomology and Olericulture, Ya'an, China, firstname.lastname@example.org