Identification of QTL for kernel weight and size and analysis of the pentatricopeptide repeat (PPR) gene family in cultivated peanut (Arachis hypogaea L.)
文献类型： 外文期刊
作者： Fang, Yuanjin 1 ; Liu, Hua 2 ; Qin, Li 2 ; Qi, Feiyan 2 ; Sun, Ziqi 2 ; Wu, Jihua 3 ; Dong, Wenzhao 2 ; Huang, Bingyan 2 ; Zhang, Xinyou 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China
2.Henan Acad Agr Sci, Henan Inst Crop Mol Breeding,Shennong Lab, Henan Prov Key Lab Oil Crops Improvement, Key Lab Oil Crops Huang Huai Hai Plains,Minist Agr, Zhengzhou 450002, Peoples R China
3.Shangqiu Acad Agr & Forestry, Shangqiu 476002, Peoples R China
关键词： Peanut (Arachis hypogaea L.); Kernel weight; Kernel size; QTLs (quantitative trait loci); Pentatricopeptide repeat (PPR)
期刊名称：BMC GENOMICS （ 影响因子：4.4； 五年影响因子：4.7 ）
ISSN： 1471-2164
年卷期： 2023 年 24 卷 1 期
页码：
收录情况： SCI
摘要： Peanut (Arachis hypogaea L.) is an important oilseed crop worldwide. Improving its yield is crucial for sustainable peanut production to meet increasing food and industrial requirements. Deciphering the genetic control underlying peanut kernel weight and size, which are essential components of peanut yield, would facilitate high-yield breeding. A high-density single nucleotide polymorphism (SNP)-based linkage map was constructed using a recombinant inbred lines (RIL) population derived from a cross between the variety Yuanza9102 and a germplasm accession wt09-0023. Kernel weight and size quantitative trait loci (QTLs) were co-localized to a 0.16 Mb interval on Arahy07 using inclusive composite interval mapping (ICIM). Analysis of SNP, and Insertion or Deletion (INDEL) markers in the QTL interval revealed a gene encoding a pentatricopeptide repeat (PPR) superfamily protein as a candidate closely linked with kernel weight and size in cultivated peanut. Examination of the PPR gene family indicated a high degree of collinearity of PPR genes between A. hypogaea and its diploid progenitors, Arachis duranensis and Arachis ipaensis. The candidate PPR gene, Arahy.JX1V6X, displayed a constitutive expression pattern in developing seeds. These findings lay a foundation for further fine mapping of QTLs related to kernel weight and size, as well as validation of candidate genes in cultivated peanut.
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