Application of genome-wide insertion/deletion markers on genetic structure analysis and identity signature of Malus accessions
文献类型： 外文期刊
作者： Wang, Xuan 1 ; Shen, Fei 1 ; Gao, Yuan 3 ; Wang, Kun 3 ; Chen, Ruiting 1 ; Luo, Jun 5 ; Yang, Lili 5 ; Zhang, Xi 1 ; Qiu, Ch 1 ;
作者机构： 1.China Agr Univ, Coll Hort, Beijing, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing, Peoples R China
3.Chinese Acad Agr Sci, Res Inst Pomol, Xingcheng, Liaoning, Peoples R China
4.Shaanxi Haisheng Fruit Ind Dev Co Ltd, Xian, Shaanxi, Peoples R China
5.China Agr Univ, Coll Informat & Elect Engn, Beijing, Peoples R China
关键词： Malus; InDel; Bud sports; Genetic structure; Germplasm
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）
ISSN： 1471-2229
年卷期： 2020 年 20 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundApple (Malus ssp.), one of the most important temperate fruit crops, has a long cultivation history and is economically important. To identify the genetic relationships among the apple germplasm accessions, whole-genome structural variants identified between M. domestica cultivars 'Jonathan' and 'Golden Delicious' were used.ResultsA total of 25,924 insertions and deletions (InDels) were obtained, from which 102 InDel markers were developed. Using the InDel markers, we found that 942 (75.3%) of the 1251 Malus accessions from 35 species exhibited a unique identity signature due to their distinct genotype combinations. The 102 InDel markers could distinguish 16.7-71.4% of the 331 bud sports derived from 'Fuji', 'Red Delicious', 'Gala', 'Golden Delicious', and other cultivars. Five distinct genetic patterns were found in 1002 diploid accessions based on 78 bi-allele InDel markers. Genetic structure analysis indicated that M. domestica showed higher genetic diversity than the other species. Malus underwent a relatively high level of wild-to-crop or crop-to-wild gene flow. M. sieversii was closely related to both M. domestica and cultivated Chinese cultivars.ConclusionsThe identity signatures of Malus accessions can be used to determine distinctness, uniformity, and stability. The results of this study may also provide better insight into the genetic relationships among Malus species.
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