High-resolution genetic mapping of a novel brown planthopper resistance locus, Bph34 in Oryza sativa L. X Oryza nivara (Sharma & Shastry) derived interspecific F2 population

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Kishor KumarKuldeep Singh

Abstract

A BPH-resistant locus designated as Bph34 identified in Oryza nivara acc. IRGC104646 on long arm of chromosome 4 using high-resolution mapping with 50 K SNP chip. BPH resistance contributed by locus showed dominant inheritance in F2 and F3. The Bph34 locus is 91 kb in size and contains 11 candidate genes. In addition to SNP markers, SSR markers, RM16994 and RM17007 co-segregated with the BPH resistance. These two SSR markers can facilitate marker-assisted transfer of the Bph34 locus into elite rice cultivars in all labs. Brown planthopper (BPH, Nilaparvata lugen Stål) is one of the most destructive insects of rice (Oryza sativa L.) causing significant yield losses annually. Exploiting host plant resistance to BPH and incorporating resistant genes in susceptible commercial cultivars is economical and environmentally friendly approach to manage this pest. Here, we report high-resolution mapping of a novel genetic locus for resistance to BPH, designated as Bph34 on long arm of rice chromosome 4. The locus was mapped using an interspecific F2 population derived from a cross between susceptible indica cultivar PR122 and BPH-resistant wild species, O. nivara acc. IRGC104646. Inheritance studies performed using F2 and F2:3 populations...Continue Reading

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Citations

May 17, 2019·Pest Management Science·Yang LingZhang Weilin
Dec 16, 2018·International Journal of Molecular Sciences·Satyabrata NandaQiang Fu
Nov 24, 2020·Current Opinion in Insect Science·Xiaohong ZhengGuangcun He

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Methods Mentioned

BETA
chip
Rice Genome Sequencing
PCR
chips
genotyping

Software Mentioned

MapChart
QTL cartographer
RECORD
RECORD ( REcombination Counting and ORDering )
win
BLAST

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