Resistance to Nephotettix impicticeps and Nilaparvata lugens in Varieties of Rice

Pathak, M. D.; Cheng, C. H.; Fortuno, M. E.

doi:10.1038/223502a0

Cited by 102 publications

(56 citation statements)

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“…Bph1 is dominant to susceptibility to BPH, and its resistance is specific to BPH [3]. The combination of a dominant resistance gene in rice and a recessive gene to virulence in BPH indicates the establishment of a gene-for-gene relationship between the two species.…”

Section: Discussionmentioning

confidence: 99%

“…The japonica rice variety Saikai190, which carries the dominant Bph1 gene originating from the indica rice landrace Mudgo, was used as the resistant rice [3,23,24]. Koshihikari, which carries no resistance gene, was used as the control variety.…”

Section: Materials and Methods (A) Rice Varietiesmentioning

confidence: 99%

“…Among a large number of commercial rice varieties (Oryza sativa) resistant to rice insect pests, varieties that are resistant to the brown planthopper (BPH, Nilaparvata lugens (Stål)) are representative in their long history of breeding and successful application in the field [1][2][3][4][5]. More than 20 resistance genes to BPH have been identified from landrace cultivars and wild Oryza species [5], and the anti-feeding effects of these genes are highly valuable resources in breeding rice varieties resistant to BPH [4].…”

Section: Introductionmentioning

confidence: 99%

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Genetic mapping of the rice resistance-breaking gene of the brown planthopper Nilaparvata lugens

et al. 2014

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Host plant resistance has been widely used for controlling the major rice pest brown planthopper (BPH, Nilaparvata lugens). However, adaptation of the wild BPH population to resistance limits the effective use of resistant rice varieties. Quantitative trait locus (QTL) analysis was conducted to identify resistance-breaking genes against the anti-feeding mechanism mediated by the rice resistance gene Bph1. QTL analysis in iso-female BPH lines with single-nucleotide polymorphism (SNP) markers detected a single region on the 10th linkage group responsible for the virulence. The QTL explained from 57 to 84% of the total phenotypic variation. Bulked segregant analysis with next-generation sequencing in F 2 progenies identified five SNPs genetically linked to the virulence. These analyses showed that virulence to Bph1 was controlled by a single recessive gene. In contrast to previous studies, the genefor-gene relationship between the major resistance gene Bph1 and virulence gene of BPH was confirmed. Identified markers are available for map-based cloning of the major gene controlling BPH virulence to rice resistance.

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Section: Discussionmentioning

confidence: 99%

Section: Materials and Methods (A) Rice Varietiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic mapping of the rice resistance-breaking gene of the brown planthopper Nilaparvata lugens

et al. 2014

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“…Rice varieties resistant to N. lugens have been released since the 1970s (31,32). However, their resistance has broken down due to the emergence of new biotypes of N. lugens (26).…”

Section: Discussionmentioning

confidence: 99%

Bacterial Symbionts of the Brown Planthopper,Nilaparvata lugens(Homoptera: Delphacidae)

Tang

Jing

et al. 2010

Appl Environ Microbiol

115

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The brown planthopper (Nilaparvata lugens Stål), the most destructive pest of rice, has been identified, including biotypes with high virulence towards previously resistant rice varieties. There have also been many reports of a yeast-like symbiont of N. lugens, but little is known about the bacterial microbes. In this study, we examined the bacterial microbes in N. lugens and identified a total of 18 operational taxonomic units (OTUs) representing four phyla (Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes) by sequencing and analyzing 16S rRNA gene libraries obtained from three populations of N. lugens, which were maintained on the rice varieties TN1, Mudgo, and ASD7. Several of the OTUs were similar to previously reported secondary symbionts of other insects, including an endosymbiont of the psyllid Glycapsis brimblecombei, an Asaia sp. found in the mosquito Anopheles stephensi, and Wolbachia, found in the mite Metaseiulus occidentalis. However, the species and numbers of the detected OTUs differed substantially among the N. lugens populations. Further, in situ hybridization analysis using digoxigenin-labeled probes indicated that OTU 1 was located in hypogastrium tissues near the ovipositor and ovary in biotype 1 insects, while OTU 2 was located in the front of the ovipositor sheath in biotype 2 insects. In addition, masses of bacterium-like organisms were observed in the tubes of salivary sheaths in rice plant tissues that the insects had fed upon. The results provide indications of the diversity of the bacterial microbes harbored by the brown planthopper and of possible associations between specific bacterial microbes and biotypes of N. lugens.

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“…Sources of resistance to BPH biotype were first identified in 1967 (Pathak et al 1969). Since then, many donors for resistance to different BPH biotypes have been identified.…”

Section: Genetics Of Bph Resistancementioning

confidence: 99%

Current Status of Brown Planthopper (BPH) Resistance and Genetics

Jena¹,

Kim²

2010

Rice

183

119

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Among the planthoppers of rice, the brown planthopper (BPH) is a major threat to rice production and causes significant yield loss annually. Host-plant resistance is an important strategy to reduce the damage caused by BPH and increase rice productivity. Twenty-one major genes for BPH resistance have been identified by using standard evaluation methods developed at the International Rice Research Institute (IRRI) to distinguish resistance or susceptibility of rice genotypes to BPH biotypes/populations. These genes are from diverse genetic resources such as land race cultivars and wild species of Oryza. Of the 21 resistance genes, 18 genes have been localized on specific region of six rice chromosomes using molecular genetic analysis and genomics tools. Some of these resistance genes are clustered together such as Bph1, bph2, Bph9, Bph10, Bph18, and Bph21 on the long arm of chromosome 12; Bph12, Bph15, Bph17 and Bph20 on the short arm of chromosome 4; bph11 and Bph14 on the long arm of chromosome 3 and Bph13(t) and bph19 on the short arm of chromosome 3. Six genes (Bph11, bph11, Bph12, bph12, Bph13 and Bph13) originated from wild Oryza species have either duplicate chromosome locations or wrong nomenclature. The discrepancy should be confirmed by allelism tests. Besides identification of major resistance genes, some quantitative trait loci (QTLs) associated with BPH resistance have also been identified on eight chromosomes. Most of the rice cultivars developed at IRRI possess one or two of the major resistance genes and the variety IR64 has many QTLs and confers strong resistance to BPH. More BPH resistance genes need to be identified from the wealth of gene pool available in the wild species of Oryza. Two BPH resistance genes (Bph14 and Bph18) have been cloned, and a snow drop lectin gene (GNA) has been identified and used in the development of BPH-resistant transgenic plants. Efficient introgression of resistance genes (Bph1, bph2, Bph3, Bph14, Bph15, Bph18, Bph20, and Bph21) into elite rice cultivars by marker-assisted selection together with strategic deployment of these genes can be an important approach to develop stable resistance to BPH and sustain rice production in the tropical and temperate rice growing regions.

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Resistance to Nephotettix impicticeps and Nilaparvata lugens in Varieties of Rice

Cited by 102 publications

References 1 publication

Genetic mapping of the rice resistance-breaking gene of the brown planthopper Nilaparvata lugens

Genetic mapping of the rice resistance-breaking gene of the brown planthopper Nilaparvata lugens

Bacterial Symbionts of the Brown Planthopper,Nilaparvata lugens(Homoptera: Delphacidae)

Current Status of Brown Planthopper (BPH) Resistance and Genetics

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