By interacting organism as written › RWV

Observationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Rice waika virus is classified as a semipersistent leafhopper-borne virus based on transmission characteristics.

Taxon: riceOryza sativat0
Interactor: RWVe2pathogen
Outcome: classified as a semipersistent leaffhopper-borne viruse2
Qualifier: based on the definition by SYLVESTER (1969)e2

Verbatim

t0
“Rice Waika Virus”
✓ located verbatim in the source · title, characters 32–48

e2
“From the various transmission characteristics, RWV is classified as a semipersistent leaffhopper-borne virus based on the definition by SYLVESTER (1969)”
✓ located verbatim in the source · abstract, characters 811–963

Title

Transmission Characteristics of Rice Waika Virus by the Green Rice Leafhopper, Nephotettix cincticeps UHLER (Hemiptera : Cicadelidae)

Jutaro HIRAO; Hitoshi INOUE Applied Entomology and Zoology 1979. doi:10.1303/aez.14.44

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Leafhoppers transmitted the rice waika virus in a semipersistent manner.

Taxon: RiceOryza sativat0
Interactor: leafhoppersCicadellidaee2pest
Second interactor: RWVe2pathogen
Outcome: semipersistent mannere2

Verbatim

t0
“Transmission Efficiency of Rice Waika Virus”
✓ located verbatim in the source · title, characters 0–43

e2
“The leafhoppers transmitted the RWV in a semipersistent manner”
✓ located verbatim in the source · abstract, characters 900–962

Title

Transmission Efficiency of Rice Waika Virus by the Green Rice Leafhoppers, Nephotettix spp. (Hemiptera : Cicadellidae)

Jutaro HIRAO; Hitoshi INOUE Applied Entomology and Zoology 1978. doi:10.1303/aez.13.264

Other claims from this paper (10)

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

N. cincticeps is one of the most important vectors of rice waika virus because it predominates in the disease epidemic area.

Taxon: RiceOryza sativat0
Interactor: N. cincticepsNephotettix cincticepse2pest
Second interactor: RWVe2pathogen
Outcome: one of the most important vectorse2
Qualifier: predominance in the disease epidemic areae2

Verbatim

t0
“Transmission Efficiency of Rice Waika Virus”
✓ located verbatim in the source · title, characters 0–43

e2
“However, N. cincticeps is one of the most important vectors of RWV because of its predominance in the disease epidemic area”
✓ located verbatim in the source · abstract, characters 1122–1245

Title

Transmission Efficiency of Rice Waika Virus by the Green Rice Leafhoppers, Nephotettix spp. (Hemiptera : Cicadellidae)

Jutaro HIRAO; Hitoshi INOUE Applied Entomology and Zoology 1978. doi:10.1303/aez.13.264

Other claims from this paper (10)

Associationobservedoriginal resultmeasured

Claim · model-written summary

The viruliferous percentage of adult Nephotettix cincticeps was slightly higher than that of nymphs.

Taxon: riceOryza sativae0
Interactor: Nephotettix cincticepsNephotettix cincticepse1pest
Second interactor: RWVe0pathogen
Outcome: viruliferous percentage of adultse2
Direction: highere2
Comparator: nymphse2

Verbatim

e0
“epidemic of the rice waika virus disease (RWV)”
✓ located verbatim in the source · abstract, characters 24–70

e1
“viruliferous green rice leafhopper, Nephotettix cincticeps UHLER”
✓ located verbatim in the source · abstract, characters 134–198

e2
“in general, viruliferous percentage of adults was slightly higher than that of nymphs”
✓ located verbatim in the source · abstract, characters 389–474

Title

Occurrence of the green rice leafhopper, Nephotettix cincticeps UHLER, in relation to spreading of the rice waika disease in field

Hitoshi INOUE Kyushu Plant Protection Research 1977. doi:10.4241/kyubyochu.23.88

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

RWV-infected hills exceeded 90% in plot A on July 19, 5 weeks after transplanting.

Taxon: riceOryza sativae0
Interactor: RWVe0pathogen
Outcome: Percentage of RWV infected hillse1
Value: more than 90%e1
Qualifier: 5 weeks after transplantinge1
Setting: plot Ae1

Verbatim

e0
“epidemic of the rice waika virus disease (RWV)”
✓ located verbatim in the source · abstract, characters 24–70

e1
“Percentage of RWV infected hills reached more than 90% toward July 19 in plot A, 5 weeks after transplanting, or August 8 in plot B, 7 weeks after transplanting”
✓ located verbatim in the source · abstract, characters 706–866

Title

Occurrence of the green rice leafhopper, Nephotettix cincticeps UHLER, in relation to spreading of the rice waika disease in field

Hitoshi INOUE Kyushu Plant Protection Research 1977. doi:10.4241/kyubyochu.23.88

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

RWV-infected hills exceeded 90% in plot B on August 8, 7 weeks after transplanting.

Taxon: riceOryza sativae0
Interactor: RWVe0pathogen
Outcome: Percentage of RWV infected hillse1
Value: more than 90%e1
Qualifier: 7 weeks after transplantinge1
Setting: plot Be1

Verbatim

e0
“epidemic of the rice waika virus disease (RWV)”
✓ located verbatim in the source · abstract, characters 24–70

e1
“Percentage of RWV infected hills reached more than 90% toward July 19 in plot A, 5 weeks after transplanting, or August 8 in plot B, 7 weeks after transplanting”
✓ located verbatim in the source · abstract, characters 706–866

Title

Occurrence of the green rice leafhopper, Nephotettix cincticeps UHLER, in relation to spreading of the rice waika disease in field

Hitoshi INOUE Kyushu Plant Protection Research 1977. doi:10.4241/kyubyochu.23.88

Other claims from this paper (9)

Associationobservedoriginal resultmeasured

Claim · model-written summary

The spread of RWV infection in field was very progressive, compared with rice dwarf disease, due to rapid vector population increase.

Taxon: riceOryza sativae0
Interactor: RWVe1pathogen
Outcome: spreading of RWV infection in fielde1
Qualifier: population density of RWV-viruliferous vector increased rapidly due to high transmissive efficiency of vector to the viruse2
Comparator: rice dwarf diseasee1

Not reportedDirection

Verbatim

e0
“epidemic of the rice waika virus disease (RWV)”
✓ located verbatim in the source · abstract, characters 24–70

e1
“The spreading of RWV infection in field was observed to be very progressive compared with the case of the rice dwarf disease”
✓ located verbatim in the source · abstract, characters 1103–1227

e2
“because the population density of RWV-viruliferous vector increased rapidly due to high transmissive efficiency of vector to the virus and existence of no apparent incubation period in the vector body”
✓ located verbatim in the source · abstract, characters 1264–1464

Title

Occurrence of the green rice leafhopper, Nephotettix cincticeps UHLER, in relation to spreading of the rice waika disease in field

Hitoshi INOUE Kyushu Plant Protection Research 1977. doi:10.4241/kyubyochu.23.88

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

First-generation adults extended infected hills over 4 or 5 m, with a maximum distance of 8 m.

Taxon: riceOryza sativae0
Interactor: RWVe1pathogen
Outcome: infected hillse1
Value: 4 or 5 me1
Qualifier: the maximum distnce was 8 me1

Verbatim

e0
“epidemic of the rice waika virus disease (RWV)”
✓ located verbatim in the source · abstract, characters 24–70

e1
“In spreading of RWV by vectors, 1st generation adults extended the infected hills in the range of 4 or 5 m, the maximum distnce was 8 m”
✓ located verbatim in the source · abstract, characters 1466–1601

Title

Occurrence of the green rice leafhopper, Nephotettix cincticeps UHLER, in relation to spreading of the rice waika disease in field

Hitoshi INOUE Kyushu Plant Protection Research 1977. doi:10.4241/kyubyochu.23.88

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Rice waika virus particles were spherical and about 30 nm across.

Taxon: RiceOryza sativat0
Interactor: RWVe0pathogen
Outcome: RWV particlese0
Value: about 30nme0

Verbatim

e0
“RWV particles were spherical ones of about 30nm in diameter”
✓ located verbatim in the source · abstract, characters 166–225

t0
“Some Properties and Intracellular Appearance of Rice Waika Virus”
✓ located verbatim in the source · title, characters 0–64

Title

Some Properties and Intracellular Appearance of Rice Waika Virus

Shuichi YAMASHITA; Yoji DOI; Kiyoshi YORA Japanese Journal of Phytopathology 1977. doi:10.3186/jjphytopath.43.278

Other claims from this paper (17)

Observation The virus had a nucleoprotein-like UV absorption spectrum.
Observation The virus sedimentation coefficient was about 172S.
Observation Antiserum to rice waika virus had a titer of 1/1,024 in an agar-gel diffusion test.
Observation Virus particles were restricted to phloem cells.
Observation Two types of inclusion bodies and small vesicles appeared in infected phloem cells.
Observation Early infection produced crystalline inclusions with latticed or tubular protein structures.
Observation Virus particles first formed at the surface of crystalline inclusions and later within them.
Observation With advancing multiplication, crystalline inclusions became electron-light granular inclusions.
Observation Granular inclusions were associated with virus particles in infected cells.
Observation Virus particles increased and accumulated as aggregates in granular inclusions.
Observation Small vesicles developed around inclusion bodies and near the cell lumen.
Observation Small vesicles contained fibrous material resembling nucleic acid strands.
Observation Virus particles were released from inclusion bodies into cytoplasm and vacuoles.
Observation The authors interpreted the inclusion bodies as viroplasms.
Observation Virus particles in vacuoles often formed crystalline arrays.
Observation Phloem necrosis was common in infected rice.
Observation Starch grains often accumulated in mesophyll chloroplasts due to phloem necrosis.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Virus particles were restricted to phloem cells.

Taxon: RiceOryza sativat0
Organ / stage: phloem cellse0
Interactor: RWVe0pathogen
Outcome: presence of RWV particlese0
Direction: restrictede0

Verbatim

e0
“the presence of RWV particles was found to be restricted to phloem cells”
✓ located verbatim in the source · abstract, characters 532–604

t0
“Some Properties and Intracellular Appearance of Rice Waika Virus”
✓ located verbatim in the source · title, characters 0–64

Title

Some Properties and Intracellular Appearance of Rice Waika Virus

Shuichi YAMASHITA; Yoji DOI; Kiyoshi YORA Japanese Journal of Phytopathology 1977. doi:10.3186/jjphytopath.43.278

Other claims from this paper (17)

Observation Rice waika virus particles were spherical and about 30 nm across.
Observation The virus had a nucleoprotein-like UV absorption spectrum.
Observation The virus sedimentation coefficient was about 172S.
Observation Antiserum to rice waika virus had a titer of 1/1,024 in an agar-gel diffusion test.
Observation Two types of inclusion bodies and small vesicles appeared in infected phloem cells.
Observation Early infection produced crystalline inclusions with latticed or tubular protein structures.
Observation Virus particles first formed at the surface of crystalline inclusions and later within them.
Observation With advancing multiplication, crystalline inclusions became electron-light granular inclusions.
Observation Granular inclusions were associated with virus particles in infected cells.
Observation Virus particles increased and accumulated as aggregates in granular inclusions.
Observation Small vesicles developed around inclusion bodies and near the cell lumen.
Observation Small vesicles contained fibrous material resembling nucleic acid strands.
Observation Virus particles were released from inclusion bodies into cytoplasm and vacuoles.
Observation The authors interpreted the inclusion bodies as viroplasms.
Observation Virus particles in vacuoles often formed crystalline arrays.
Observation Phloem necrosis was common in infected rice.
Observation Starch grains often accumulated in mesophyll chloroplasts due to phloem necrosis.

RWV 13 claims

13 claims