Exploiting Illumina sequencing for the development of InDel markers in watermelon (Citrullus lanatus)
文献类型: 外文期刊
第一作者: Liu, G.
作者: Liu, G.;Xu, J. H.;Zhang, M.;Li, P. F.;Yao, X. F.;Hou, Q.;Zhu, L. L.;Ren, R. S.;Yang, X. P.
作者机构:
关键词: Watermelon;Citrullus lanatus;Fusarium;InDel
期刊名称:JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY ( 影响因子:1.641; 五年影响因子:1.616 )
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收录情况: SCI
摘要: Watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai var. lanatus] is a cross-pollinating diploid species and is one of the most important dicotyledonous plants belonging to the family Cucurbitaceae due to its high nutritional value, rapid growth, sweet and juicy taste, and refreshing nature as a summer fruit. However, the insertion-deletion (InDel) markers available for watermelon cannot satisfy the demand to identify and map resistance genes in this major crop. In this study, we have characterised and developed numerous polymorphic InDel markers using Illumina re-sequencing of a male parental line that is resistant to Fusarium wilt. In total, 25,701 potential InDel markers were identified, with a mean size of 18 bp. From these, 7,387 potential InDel markers > 10 bp were selected and tested as candidate InDel markers to locate resistance genes for map-based cloning and polymorphism analysis. We designed and synthesised 69 primer pairs using Primer 3 software. Overall, 54 primer pairs detected polymorphism between the Fusarium-susceptible female parent 'JSw01-1' and the Fusarium-resistant male parent 'JRw08-3'. Among the 69 InDel markers, 54 (78.3%) exhibited polymorphism at 179 PCR loci. Polymorphic information content (PIC) values ranged from 0.04 to 0.91, and the number of alleles per primer ranged from 1 to 11. The 54 InDel markers that were mined and exploited via Illumina re-sequencing of watermelon could accelerate the development of marker-assisted breeding and the progression of genetic research to understand resistance to Fusarium wilt in watermelon.
分类号: S6
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