Genome sequences of two diploid wild relatives of cultivated sweetpotato reveal targets for genetic improvement
文献类型： 外文期刊
作者： Wu, Shan 1 ; Lau, Kin H. 2 ; Cao, Qinghe 1 ; Hamilton, John P. 2 ; Sun, Honghe 1 ; Zhou, Chenxi 5 ; Eserman, Lauren 6 ; G 1 ;
作者机构： 1.Cornell Univ, Boyce Thompson Inst, Ithaca, NY 14853 USA
2.Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA
3.Jiangsu Xuzhou Sweetpotato Res Ctr, Xuzhou 221131, Jiangsu, Peoples R China
4.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Vegetables, Beijing 100097, Peoples R China
5.Univ Queensland, Inst Mol Biosci, Brisbane, Qld 4072, Australia
6.Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA
7.Int Potato Ctr, Lima 12, Peru
8.North Carolina State Univ, Dept Hort Sci, Raleigh, NC 27695 USA
9.Univ Tennessee, Dept Entomol & Plant Pathol, Knoxville, TN 37996 USA
10.Michigan State Univ, Dept Hort, E Lansing, MI 48824 USA
11.Int Potato Ctr, Nairobi 00603, Kenya
12.Hubei Acad Agr Sci, Food Crops Inst, Wuhan 430064, Hubei, Peoples R China
13.North Carolina State Univ, Genom Sci Lab, Raleigh, NC 27695 USA
14.Int Potato Ctr, Kampala, Uganda
15.Michigan State Univ, Plant Resilience Inst, E Lansing, MI 48824 USA
16.ARS, USDA, Robert W Holley Ctr Agr & Hlth, Ithaca, NY 14853 USA
17.Atlanta Bot Garden, Dept Conservat & Res, Atlanta, GA 30309 USA
18.Cornell Univ, Plant Pathol & Plant Microbe Biol Sect, Geneva, NY 14456 USA
期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）
ISSN： 2041-1723
年卷期： 2018 年 9 卷
页码：
收录情况： SCI
摘要： Sweetpotato [Ipomoea batatas (L.) Lam.] is a globally important staple food crop, especially for sub-Saharan Africa. Agronomic improvement of sweetpotato has lagged behind other major food crops due to a lack of genomic and genetic resources and inherent challenges in breeding a heterozygous, clonally propagated polyploid. Here, we report the genome sequences of its two diploid relatives, I. trifida and I. triloba, and show that these high-quality genome assemblies are robust references for hexaploid sweetpotato. Comparative and phylogenetic analyses reveal insights into the ancient whole-genome triplication history of Ipomoea and evolutionary relationships within the Batatas complex. Using resequencing data from 16 genotypes widely used in African breeding programs, genes and alleles associated with carotenoid biosynthesis in storage roots are identified, which may enable efficient breeding of varieties with high provitamin A content. These resources will facilitate genome-enabled breeding in this important food security crop.
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