Semantic Scholar Open Access 2018 208 sitasi

Diversification and independent domestication of Asian and European pears

Jun Wu Yingtao Wang Jiabao Xu S. Korban Z. Fei +34 lainnya

Lihat Sumber DOI

Abstrak

BackgroundPear (Pyrus) is a globally grown fruit, with thousands of cultivars in five domesticated species and dozens of wild species. However, little is known about the evolutionary history of these pear species and what has contributed to the distinct phenotypic traits between Asian pears and European pears.ResultsWe report the genome resequencing of 113 pear accessions from worldwide collections, representing both cultivated and wild pear species. Based on 18,302,883 identified SNPs, we conduct phylogenetics, population structure, gene flow, and selective sweep analyses. Furthermore, we propose a model for the divergence, dissemination, and independent domestication of Asian and European pears in which pear, after originating in southwest China and then being disseminated throughout central Asia, has eventually spread to western Asia, and then on to Europe. We find evidence for rapid evolution and balancing selection for S-RNase genes that have contributed to the maintenance of self-incompatibility, thus promoting outcrossing and accounting for pear genome diversity across the Eurasian continent. In addition, separate selective sweep signatures between Asian pears and European pears, combined with co-localized QTLs and differentially expressed genes, underline distinct phenotypic fruit traits, including flesh texture, sugar, acidity, aroma, and stone cells.ConclusionsThis study provides further clarification of the evolutionary history of pear along with independent domestication of Asian and European pears. Furthermore, it provides substantive and valuable genomic resources that will significantly advance pear improvement and molecular breeding efforts.

Topik & Kata Kunci

Medicine Biology

Penulis (39)

Jun Wu

Yingtao Wang

Jiabao Xu

S. Korban

Z. Fei

S. Tao

R. Ming

S. Tai

Awais Khan

J. Postman

C. Gu

Hao Yin

Danman Zheng

K. Qi

Y. Li

Runze Wang

C. Deng

Satish Kumar

D. Chagné

Xiaolong Li

Juyou Wu

Xiaosan Huang

Huping Zhang

Z. Xie

Xiao Li

Mingyue Zhang

Yanhong Li

Z. Yue

X. Fang

Jia-ming Li

Leiting Li

C. Jin

Mengfan Qin

Jiaying Zhang

Xiao Wu

Yaqi Ke

Jian Wang

H. Yang

Shaoling Zhang

Format Sitasi

APA MLA BibTeX

Wu, J., Wang, Y., Xu, J., Korban, S., Fei, Z., Tao, S. et al. (2018). Diversification and independent domestication of Asian and European pears. https://doi.org/10.1186/s13059-018-1452-y

Akses Cepat

Lihat di Sumber doi.org/10.1186/s13059-018-1452-y

Informasi Jurnal

Tahun Terbit: 2018
Bahasa: en
Total Sitasi: 208×
Sumber Database: Semantic Scholar
DOI: 10.1186/s13059-018-1452-y
Akses: Open Access ✓