A high-quality genome assembly highlights rye genomic characteristics and agronomically important genes
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Published:2021-03-18
Issue:4
Volume:53
Page:574-584
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ISSN:1061-4036
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Container-title:Nature Genetics
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language:en
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Short-container-title:Nat Genet
Author:
Li GuangweiORCID, Wang Lijian, Yang JianpingORCID, He HangORCID, Jin HuaibingORCID, Li XumingORCID, Ren TianhengORCID, Ren Zhenglong, Li FengORCID, Han Xue, Zhao Xiaoge, Dong Lingli, Li Yiwen, Song Zhongping, Yan Zehong, Zheng Nannan, Shi Cuilan, Wang Zhaohui, Yang Shuling, Xiong Zijun, Zhang Menglan, Sun Guanghua, Zheng Xu, Gou MingyueORCID, Ji ChangmianORCID, Du Junkai, Zheng HongkunORCID, Doležel JaroslavORCID, Deng Xing WangORCID, Stein NilsORCID, Yang QinghuaORCID, Zhang KunpuORCID, Wang DaowenORCID
Abstract
AbstractRye is a valuable food and forage crop, an important genetic resource for wheat and triticale improvement and an indispensable material for efficient comparative genomic studies in grasses. Here, we sequenced the genome of Weining rye, an elite Chinese rye variety. The assembled contigs (7.74 Gb) accounted for 98.47% of the estimated genome size (7.86 Gb), with 93.67% of the contigs (7.25 Gb) assigned to seven chromosomes. Repetitive elements constituted 90.31% of the assembled genome. Compared to previously sequenced Triticeae genomes, Daniela, Sumaya and Sumana retrotransposons showed strong expansion in rye. Further analyses of the Weining assembly shed new light on genome-wide gene duplications and their impact on starch biosynthesis genes, physical organization of complex prolamin loci, gene expression features underlying early heading trait and putative domestication-associated chromosomal regions and loci in rye. This genome sequence promises to accelerate genomic and breeding studies in rye and related cereal crops.
Publisher
Springer Science and Business Media LLC
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