Development of AhMITE1 markers through genome-wide analysis in peanut (Arachis hypogaea L.)

Gayathri, M and Shirasawa, K and Varshney, R K and Pandey, M K and Bhat, R S (2018) Development of AhMITE1 markers through genome-wide analysis in peanut (Arachis hypogaea L.). BMC Research Notes, 11 (1) (10). pp. 1-6. ISSN 1756-0500

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Abstract

Objective In peanut, the DNA polymorphism is very low despite enormous phenotypic variations. This limits the use of genomics-assisted breeding to enhance peanut productivity. This study aimed to develop and validate new AhMITE1 and cleaved amplified polymorphic sequences (CAPS) markers. Results In total, 2957 new AhMITE1 markers were developed in addition to identifying 465 already reported markers from the whole genome re-sequencing data (WGRS) of 33 diverse genotypes of peanut. The B sub-genome (1620) showed more number of markers than the A sub-genome (1337). Distribution also varied among the chromosomes of both the sub-genomes. Further, 52.6% of the markers were from genic regions; where 31.0% were from intronic regions and 5.2% were from exonic regions. Of the 343 randomly selected markers, 82.2% showed amplification validation, with up to 35.5% polymorphism. From the SNPs on the A03, B01, B02 and B03 chromosomes, 11,730 snip-SNPs (potential CAPS sites) were identified, and 500 CAPS markers were developed from chromosome A03. Of these markers, 30.0% showed validation and high polymorphism. This study demonstrated the potential of the WGRS data to develop AhMITE1 and CAPS markers, which showed high level of validation and polymorphism. These marker resources will be useful for various genetic studies and mapping in peanut.

Item Type: Article
Divisions: Research Program : Genetic Gains
CRP: UNSPECIFIED
Uncontrolled Keywords: Peanut, Diverse genotypes, WGRS, AhMITE1 markers, CAPS markers, Validation and polymorphism, trait mapping, groundnut
Subjects: Mandate crops > Groundnut
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 03 Mar 2018 11:03
Last Modified: 03 Mar 2018 11:03
URI: http://oar.icrisat.org/id/eprint/10466
Official URL: http://dx.doi.org/10.1186/s13104-017-3121-8
Projects: UNSPECIFIED
Funders: DST-JSPS Bilateral Program
Acknowledgement: Financial support received from the DST-JSPS Bilateral Program is gratefully acknowledged. We acknowledge the receipt of genotypes DER, VL 1, 110 and 110(S) from Dr. M. V. C. Gowda, Professor, Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad 580 005, India. We thank S. Nakayama (Kazusa DNA Research Institute) for technical assistance.
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