Kaur, G and Yadav, I S and Bhatia, D and Vikal, Y and Neelam, K and Dhillon, N K and Praba, U P and Mangat, G S and Singh, K (2022) BSA-seq Identifies a Major Locus on Chromosome 6 for Root-Knot Nematode (Meloidogyne graminicola) Resistance From Oryza glaberrima. Frontiers in Genetics (TSI), 13. pp. 1-15. ISSN 1664-8021
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Abstract
Root-knot nematode (Meloidogyne graminicola) is one of the emerging threats to rice production worldwide that causes substantial yield reductions. There is a progressive shift of the cropping system from traditional transplanting to direct-seeded water-saving rice production that favored the development of M. graminicola. Scouting and deploying new resistance genes is an economical approach to managing the root-knot nematodes. Here, we report that the inheritance of root-knot nematode resistance in Oryza glaberrima acc. IRGC102206 is governed by a single dominant gene. Traditional mapping coupled with BSA-seq is used to map nematode resistance gene(s) using the BC1F1 population derived from a cross of O. sativa cv. PR121 (S) and O. glaberrima acc. IRGC102206 (R). One major novel genomic region spanning a 3.0-Mb interval on chromosome 6 and two minor QTLs on chromosomes 2 and 4 are the potential genomic regions associated with rice root-knot nematode resistance. Within the QTL regions, 19 putative candidate genes contain 81 non-synonymous variants. The detected major candidate region could be fine mapped to accelerate marker-assisted breeding for root-knot nematode resistance in rice.
| Item Type: | Article |
|---|---|
| Divisions: | Genebank |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | BSA-QTLseq, candidate genes, Oryza glaberrima, SNPs, Meloidogyne graminicola |
| Subjects: | Others > Rice |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 17 Jan 2024 06:06 |
| Last Modified: | 17 Jan 2024 06:06 |
| URI: | http://oar.icrisat.org/id/eprint/12373 |
| Official URL: | https://www.frontiersin.org/articles/10.3389/fgene... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | This work was supported by the Department of Science and Technology, Ministry of Science and Technology, New Delhi, in the form of Extramural ResearchGrant (FileNo. EMR/2016/007539). |
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