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遗传图谱鉴定了花生种子重量和出仁率的基因组区域及候选基因。

Genetic mapping identifies genomic regions and candidate genes for seed weight and shelling percentage in groundnut.

作者信息

Gangurde Sunil S, Pasupuleti Janila, Parmar Sejal, Variath Murali T, Bomireddy Deekshitha, Manohar Surendra S, Varshney Rajeev K, Singam Prashant, Guo Baozhu, Pandey Manish K

机构信息

Center of Excellence in Genomics & Systems Biology (CEGSB), International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India.

Department of Genetics, Osmania University, Hyderabad, India.

出版信息

Front Genet. 2023 Mar 16;14:1128182. doi: 10.3389/fgene.2023.1128182. eCollection 2023.

DOI:10.3389/fgene.2023.1128182
PMID:37007937
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10061104/
Abstract

Seed size is not only a yield-related trait but also an important measure to determine the commercial value of groundnut in the international market. For instance, small size is preferred in oil production, whereas large-sized seeds are preferred in confectioneries. In order to identify the genomic regions associated with 100-seed weight (HSW) and shelling percentage (SHP), the recombinant inbred line (RIL) population (Chico × ICGV 02251) of 352 individuals was phenotyped for three seasons and genotyped with an Axiom_ array containing 58K SNPs. A genetic map with 4199 SNP loci was constructed, spanning a map distance of 2708.36 cM. QTL analysis identified six QTLs for SHP, with three consistent QTLs on chromosomes A05, A08, and B10. Similarly, for HSW, seven QTLs located on chromosomes A01, A02, A04, A10, B05, B06, and B09 were identified. locus and candidate genes associated with seed weight were identified in the QTL region on chromosome B09. Laccase, fibre protein, lipid transfer protein, senescence-associated protein, and disease-resistant NBS-LRR proteins were identified in the QTL regions associated with shelling percentage. The associated markers for major-effect QTLs for both traits successfully distinguished between the small- and large-seeded RILs. QTLs identified for HSW and SHP can be used for developing potential selectable markers to improve the cultivars with desired seed size and shelling percentage to meet the demands of confectionery industries.

摘要

种子大小不仅是一个与产量相关的性状，也是决定花生在国际市场上商业价值的一项重要指标。例如，在榨油生产中，小粒种子更受青睐，而在糖果行业中，大粒种子更受青睐。为了鉴定与百粒重（HSW）和出仁率（SHP）相关的基因组区域，对由352个个体组成的重组自交系（RIL）群体（Chico×ICGV 02251）进行了三个季节的表型分析，并用包含58K个单核苷酸多态性（SNP）的Axiom阵列进行基因分型。构建了一个含有4199个SNP位点的遗传图谱，图谱距离为2708.36厘摩（cM）。数量性状位点（QTL）分析鉴定出6个与出仁率相关的QTL，其中3个在A05、A08和B10染色体上是一致的。同样，对于百粒重，鉴定出位于A01、A02、A04、A10、B05、B06和B09染色体上的7个QTL。在B09染色体的QTL区域鉴定出了与种子重量相关的位点和候选基因。在与出仁率相关的QTL区域鉴定出了漆酶、纤维蛋白、脂质转运蛋白、衰老相关蛋白和抗病NBS-LRR蛋白。这两个性状的主效QTL相关标记成功地区分了小粒和大粒RIL。为百粒重和出仁率鉴定出的QTL可用于开发潜在的选择标记，以改良具有所需种子大小和出仁率的品种，满足糖果行业的需求。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/4f19207d4a99/fgene-14-1128182-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/1b8d5c733206/fgene-14-1128182-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/84ab80388227/fgene-14-1128182-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/36524fdcb391/fgene-14-1128182-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/b0f391a5903a/fgene-14-1128182-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/5e3bf8bf5dd6/fgene-14-1128182-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/4f19207d4a99/fgene-14-1128182-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/1b8d5c733206/fgene-14-1128182-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/84ab80388227/fgene-14-1128182-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/36524fdcb391/fgene-14-1128182-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/b0f391a5903a/fgene-14-1128182-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/5e3bf8bf5dd6/fgene-14-1128182-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53c7/10061104/4f19207d4a99/fgene-14-1128182-g006.jpg

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