QTLs and candidate genes analyses for fruit size under domestication and differentiation in melon (Cucumis melo L.) based on high resolution maps
Ver/Abrir
Autor/a
Lian, Qun
Fu, Qiushi
Xu, Yongyang
Hu, Zhicheng
Zheng, Jing
Zhang, Aiai
He, Yuhua
Wang, Changsheng
Xu, Chuanqiang
Chen, Benxue
Zhao, Guangwei
Wang, Huaisong
Fecha de publicación
2021-03-03ISSN
1471-2229
Resumen
Background: Melon is a very important horticultural crop produced worldwide with high phenotypic diversity. Fruit size is among the most important domestication and differentiation traits in melon. The molecular mechanisms of fruit size in melon are largely unknown.
Results: Two high-density genetic maps were constructed by whole-genome resequencing with two F2
segregating populations (WAP and MAP) derived from two crosses (cultivated agrestis × wild agrestis and cultivated melo × cultivated agrestis). We obtained 1,871,671 and 1,976,589 high quality SNPs that show differences between parents in WAP and MAP. A total of 5138 and 5839 recombination events generated 954 bins in WAP and 1027 bins in MAP with the average size of 321.3 Kb and 301.4 Kb respectively. All bins were mapped onto 12 linkage groups in WAP and MAP. The total lengths of two linkage maps were 904.4 cM (WAP) and 874.5 cM (MAP), covering 86.6% and 87.4% of the melon genome. Two loci for fruit size were identified on chromosome 11 in WAP and chromosome 5 in MAP, respectively. An auxin response factor and a YABBY transcription factor were inferred to be the candidate genes for both loci.
Conclusion: The high-resolution genetic maps and QTLs analyses for fruit size described here will provide a better understanding the genetic basis of domestication and differentiation, and provide a valuable tool for map-based cloning and molecular marker assisted breeding.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
English
Materias (CDU)
633 - Cultivos y producciones
Páginas
13
Publicado por
BMC
Publicado en
BMC Plant Biology
Citación
Lian, Qun, Qiushi Fu, Yongyang Xu, Zhicheng Hu, Jing Zheng, Aiai Zhang, and Yuhua He et al. 2021. "Qtls And Candidate Genes Analyses For Fruit Size Under Domestication And Differentiation In Melon (Cucumis Melo L.) Based On High Resolution Maps". BMC Plant Biology 21 (1). doi:10.1186/s12870-021-02904-y.
Program
Genòmica i Biotecnologia
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