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- Title
genomes of pecan and Chinese hickory provide insights into Carya evolution and nut nutrition.
- Authors
Huang, Youjun; Xiao, Lihong; Zhang, Zhongren; Zhang, Rui; Wang, Zhengjia; Huang, Chunying; Huang, Ren; Luan, Yumeng; Fan, Tongqiang; Wang, Jianhua; Shen, Chen; Zhang, Shenmei; Wang, Xinwang; Randall, Jennifer; Zheng, Bingsong; Wu, Jiasheng; Zhang, Qixiang; Xia, Guohua; Xu, Chuanmei; Chen, Ming
- Abstract
Background Pecan (Carya illinoinensis) and Chinese hickory (C. cathayensis) are important commercially cultivated nut trees in the genus Carya (Juglandaceae), with high nutritional value and substantial health benefits. Results We obtained >187.22 and 178.87 gigabases of sequence, and ∼288× and 248× genome coverage, to a pecan cultivar ("Pawnee") and a domesticated Chinese hickory landrace (ZAFU-1), respectively. The total assembly size is 651.31 megabases (Mb) for pecan and 706.43 Mb for Chinese hickory. Two genome duplication events before the divergence from walnut were found in these species. Gene family analysis highlighted key genes in biotic and abiotic tolerance, oil, polyphenols, essential amino acids, and B vitamins. Further analyses of reduced-coverage genome sequences of 16 Carya and 2 Juglans species provide additional phylogenetic perspective on crop wild relatives. Conclusions Cooperative characterization of these valuable resources provides a window to their evolutionary development and a valuable foundation for future crop improvement.
- Subjects
HICKORIES; PECAN; ESSENTIAL amino acids; GENES; GENOMES; NUTRITIONAL value
- Publication
GigaScience, 2019, Vol 8, Issue 5, pN.PAG
- ISSN
2047-217X
- Publication type
Article
- DOI
10.1093/gigascience/giz036