High-resolution mapping of the quantitative trait locus (QTLs) conferring resistance to false smut disease in rice.

Autor: Neelam K; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India. kneelam@pau.edu., Kumar K; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India.; Faculty Centre for Integrated Rural Development and Management, Ramakrishna Mission Vivekananda Educational and Research Institute, Narendrapur, Kolkata, 700103, India., Kaur A; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Kishore A; AccuScript Consultancy, Ludhiana, Punjab, 141004, India., Kaur P; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Babbar A; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Kaur G; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Kamboj I; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Lore JS; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Vikal Y; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Mangat GS; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Kaur R; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Khanna R; Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, 141004, India., Singh K; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, Punjab, 141004, India.; ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110073, India.
Jazyk: angličtina
Zdroj: Journal of applied genetics [J Appl Genet] 2022 Feb; Vol. 63 (1), pp. 35-45. Date of Electronic Publication: 2021 Sep 17.
DOI: 10.1007/s13353-021-00659-8
Abstrakt: Rice false smut (RFS), an emerging major fungal disease worldwide caused by Ustilaginoidea virens, affects rice grain quality and yield. RFS cause 2.8-49% global yield loss depending upon disease severity and cultivars. In India, the yield loss due to RFS ranged from 2 to 75%. Identification of the genes or quantitative trait loci (QTLs) governing disease resistance would be of utmost importance towards mitigating the economic losses incurred due to RFS. Here, we report mapping of RFS resistance QTLs from a resistant breeding line RYT2668. The mapping population was evaluated for RFS resistance under the field condition in three cropping seasons 2013, 2015, and 2016. A positive correlation among infected panicle/plant, total smut ball/panicle, and disease score was observed in the years 2013, 2015, and the mean data. A total of seven QTLs were mapped on rice chromosomes 2, 4, 5, 7, and 9 using 2326 single nucleotide polymorphism markers. Of these, two QTLs, qRFSr5.3 and qRFSr7.1a, were associated with the infected panicle per plant, one QTL qRFsr9.1 with total smut ball per panicle, and four QTLs qRFSr2.2, qRFSr4.3, qRFSr5.4, and qRFSr7.1b with disease score. Among them, a novel QTL qRFSr9.1 on chromosome 9 exhibits the largest phenotypic effect. The prediction of putative candidate genes within the qRFSr9.1 revealed four nucleotide-binding sites-leucine-rich repeat (NBS-LRR) domain-containing disease resistance proteins. In summary, our findings mark the hotspot region of rice chromosomes carrying genes/QTLs for resistance to the RFS disease.
(© 2021. Institute of Plant Genetics, Polish Academy of Sciences, Poznan.)
Databáze: MEDLINE
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