Introgression of OsAP47 by marker-assisted selection enhanced resistance against southern rice black-streaked dwarf virus disease

Southern rice black-streaked dwarf virus disease (SRBSDVD) is the most destructive viral disease in rice. In order to breeding resistant cultivars, Insertion-Deletion (InDel) markers were developed linked to OsAP47, the first isolated major resistance gene against SRBSDVD. Marker-assisted selection...

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Bibliographic Details
Published in:Virology (New York, N.Y.) N.Y.), 2024-06, Vol.594, p.110060-110060, Article 110060
Main Authors: Lin, Feng, Jing, Dedao, Zhang, Jiayuan, Sun, Yue, Du, Linlin, Li, Chenyang, Lan, Ying, Zhou, Tong
Format: Article
Language:English
Subjects:
Alleles
Breeding
Disease Resistance - genetics
Marker-assisted selection
Oryza - genetics
Reoviridae - genetics
Resistance
Rice
SRBSDVD
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Summary:Southern rice black-streaked dwarf virus disease (SRBSDVD) is the most destructive viral disease in rice. In order to breeding resistant cultivars, Insertion-Deletion (InDel) markers were developed linked to OsAP47, the first isolated major resistance gene against SRBSDVD. Marker-assisted selection (MAS) was conducted to introduce this gene into the commercial variety. A rice line carrying homozygous resistance allele of OsAP47 was selected and named Kanghei No. 201 (KH201). Evaluated by artificial inoculation, KH201 showed significantly higher resistance than the recurrent parent Suxiu No.867 (SX867). And no significant differences were detected for KH201 in the yield-related components, including spikelets per panicle (SPP), ripened grains per panicle (RGPP), 1000-grain weight (TGW) and panicles per square meter (PPSM), leading to stable theoretical yield. The results indicated that introgression of OsAP47 improved rice resistance and can avoid yield losses produced by SRBSDVD. KH201 was demonstrated as a resistance material that could be used in rice breeding. •A rice line KH201 carryingOsAP47 showed significantly higher resistance to SRBSDVD and can be used in resistance breeding.
ISSN:0042-6822
1096-0341
DOI:10.1016/j.virol.2024.110060