Insect-Borne Viruses of Rice

Hibino, Hiroki

doi:10.1007/978-1-4612-3292-6_8

Cited by 40 publications

(15 citation statements)

References 93 publications

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“…In temperate areas the virus does not overwinter in the rice plant, but is introduced through the long-distance migrations of the planthopper vector (Hibino, 1990). No RRSV was detected in any of the migrating N. lugens which were captured at altitude and which were subsequently tested by us (n=100).…”

Section: Rice Ragged Stunt Virusmentioning

confidence: 99%

Observations on the autumn migration of Nilaparvata lugens (Homoptera: Delphacidae) and other pests in east central China

Riley

Reynolds

Smith

et al. 1994

Bull. Entomol. Res.

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Radar, aerial netting and ground sampling were used to study the autumn migration of Nilaparvata lugens (Stal) in Jiangsu Province in east central China. Emigration of macropterous adults increased from late August until late September as the main rice crop matured and was harvested. In early and mid September, the resulting windborne migrations carried the planthoppers mainly towards the west, although the migration directions ranged (within the western sector) from south to north. By late September, however, displacements were predominantly to the south-west on the then prevailing north-east monsoon winds: migration was particularly rapid when the north-easterlies were reinforced by typhoons. Although in late September such movements to more southerly latitudes are essential for the survival of the planthoppers' progeny, we found no definite evidence for preferential emigration on winds blowing towards the south. There were, however, indications that when winds towards the north occurred, the duration of migratory flight was curtailed. Irrespective of any possible preference for migration on northerlies, a large proportion of the N. lugens population would normally be carried in an adaptive southwards direction, because the advent of the north-east monsoon occurs at a time when the number of flight-ready planthoppers approaches its peak.

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Section: Rice Ragged Stunt Virusmentioning

confidence: 99%

Observations on the autumn migration of Nilaparvata lugens (Homoptera: Delphacidae) and other pests in east central China

Riley

Reynolds

Smith

et al. 1994

Bull. Entomol. Res.

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“…The brown planthopper, Nilaparvata lugens, is one of the most important pests of the rice plant because of its sucking damage and its ability to transmit plant-pathogenic viruses (S6gawa, 1982;Hibino, 1989). We found a virus, Nilaparvata lugens reovirus (NLRV), in a healthy colony of the brown planthopper.…”

Section: Introductionmentioning

confidence: 95%

Complete nucleotide sequence of the Nilaparvata lugens reovirus: a putative member of the genus Fijivirus

Nakashima

Koizumi

Watanabe

et al. 1996

Journal of General Virology

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The nucleotide sequences of all genome segments of the Nilaparvata lugens reovirus (NLRV), which is found in the brown planthopper Nilaparvata lugens, have been determined and some genes have been assigned to structural and functional proteins. The genome of NLRV consists of 28 699 nucleotides and contains at least 11 large open reading frames (ORFs). The genome of NLRV is the largest among viruses of the family Reoviridae reported to date. The deduced amino acid sequence of genome segment S1 contained the major motifs of RNA polymerase and that of S7 had the purine NTP-binding motif. Based on the molecular masses of the deduced proteins and the particle structure of NLRV, segments S1, S3 and S7 were assigned to the 160, 140 and 75 kDa proteins, respectively, that are located in the inner core. It was deduced that S2 codes for the 135 kDa protein (B spike), which is located on the surface of the inner core. Most reported ORFs of rice black streaked dwarf virus (RBSDV), which shares many properties with NLRV, had similarities with the corresponding ORFs of NLRV. An exception was S7 ORF2, which is found in RBSDV but not NLRV and may therefore be involved in multiplication of RBSDV in rice plants. These results and our previous observations indicate that NLRV should be classified in the genus Fijivirus.

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“…NLRV is, however, different from RRSV in the following respects. (i) Symptoms were not observed in host rice plants on which the Izumo colony of N. lugens was reared; (ii) NLRV was vertically transmitted to the next generation whereas RRSV was not (Hibino, 1989); (iii) the electrophoretic profile of the genome of NLRV was different from that of RRSV; (iv) no serological cross-reaction was observed between NLRV and RRSV (unpublished data); (v) the RRSV particle has a B-spiked core (Hagiwara et al, 1986) but NLRV showed a typical double shell (Fig. 2a).…”

Section: Discussionmentioning

confidence: 99%

“…The planthopper transmits two kinds of viruses, rice ragged stunt virus (RRSV), a member of the reovirus group, and rice grassy stunt virus, a member of the tenuivirus group. These viruses multiply in the planthopper but are not transmitted via the eggs (Hibino, 1989). During studies of planthopper-and leafhopper-borne viruses, we found virus-like particles in a colony of N. lugens and named them Nilaparvata lugens reovirus (NLRV).…”

Section: Introductionmentioning

confidence: 99%

A reovirus in the brown planthopper, Nilaparvata lugens

Noda¹,

Ishikawa

Hibino

et al. 1991

Journal of General Virology

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A new virus, belonging to the reovirus group, was found in an apparently healthy colony of the brown planthopper, Nilaparvata lugens, and was referred to as the Nilaparvata lugens reovirus (NLRV). The virus was found in the cytoplasm of the insect cells, sometimes associated with tubular structures, which is one of the characteristic features in tissues infected with reoviruses. The virus was purified by carbon tetrachloride clarification, polyethylene glycol precipitation, differential and CsCI equilibrium centrifugations. The virus has double-shelled particles approximately 65 nm in diameter, containing 10 genome segments of dsRNA. The electrophoretic profile of the dsRNA segments differed from those of viruses associated with rice planthoppers and leafhoppers. Seven proteins were detected in a purified preparation of the virus: four were associated with the core particle and three with the outer shell. A virus antigen was detected in individual insects by ELISA. The virus is retained after injection and is vertically transmitted to the offspring.

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Insect-Borne Viruses of Rice

Cited by 40 publications

References 93 publications

Observations on the autumn migration of Nilaparvata lugens (Homoptera: Delphacidae) and other pests in east central China

Observations on the autumn migration of Nilaparvata lugens (Homoptera: Delphacidae) and other pests in east central China

Complete nucleotide sequence of the Nilaparvata lugens reovirus: a putative member of the genus Fijivirus

A reovirus in the brown planthopper, Nilaparvata lugens

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