Abstract
Summary Comparative transmission by leafhoppers of three tungro isolates obtained from the Philippines, India and Malaysia, and of an infectious clone of the Philippine isolate of rice tungro bacilliform virus (RTBV) by agroinoculation, was conducted on 12 rice cultivars. The symptoms, including height of inoculated plants were recorded and the efficiency of RTBV and rice tungro spherical virus (RTSV) transmission was determined by enzyme‐linked immunosorbent assay. In most cases, the reduction of height and leaf symptoms of plants infected with RTBV and/or RTSV by the three isolates were similar in any given cultivar. On cultivar ASD 7 , the Malaysian isolate showed more severe yellow orange leaf discolouration symptoms than the Indian isolate which in turn had more severe leaf discolouration than the Philippine isolate. On the other hand, cultivars ASD 7 and Ptb 18 produced the most severe yellow orange leaf discolouration when agroinoculated with an infectious RTBV clone of the Philippine isolate. There was some variation in the transmission profile of the two tungro viruses among the three isolates. However, there was no one clear set of characteristics by which one could use cultivars to distinguish isolates. The amount of viral DNA in agroinfected plants of cultivars Utri merah, Balimau putih, Utri Rajapan and ARC 11554 was low, while the amount was high in cultivars TN1, ASD7, Ptb 18 and TKM 6. There was high correlation between the amount of viral coat protein by ELISA and viral nucleic acid by DNA hybridisation on 10 agroinoculated rice cultivars; this might indicate that similar proportions of the total RTBV DNA are encapsidated in each cultivar.
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Claims 12
Claim · model-written summary
Most cultivars showed similar height reduction and leaf symptoms across the three tungro isolates.
- Taxon
- rice
Oryza sativat0 - Interactor
- RTBVRice tungro bacilliform viruse0pathogen
- Second interactor
- RTSVRice tungro spherical viruse0pathogen
- Outcome
- reduction of height and leaf symptomse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most cases, the reduction of height and leaf symptoms of plants infected with RTBV and/or RTSV by the three isolates were similar in any given cultivar”
t0“rice tungro virus disease”
Claim · model-written summary
On ASD 7, Malaysian isolate discoloration was more severe than Indian isolate discoloration.
- Taxon
- riceOryza sativat0
- Material
- ASD 7e0
- Interactor
- Malaysian isolatee0pathogen
- Outcome
- yellow orange leaf discolouration symptomse0
- Direction
- more severee0
- Comparator
- Indian isolatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On cultivar ASD 7 , the Malaysian isolate showed more severe yellow orange leaf discolouration symptoms than the Indian isolate which in turn had more severe leaf discolouration than the Philippine isolate”
t0“rice tungro virus disease”
Claim · model-written summary
On ASD 7, Indian isolate discoloration was more severe than Philippine isolate discoloration.
- Taxon
- riceOryza sativat0
- Material
- ASD 7e0
- Interactor
- Indian isolatee0pathogen
- Outcome
- leaf discolouratione0
- Direction
- more severee0
- Comparator
- Philippine isolatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On cultivar ASD 7 , the Malaysian isolate showed more severe yellow orange leaf discolouration symptoms than the Indian isolate which in turn had more severe leaf discolouration than the Philippine isolate”
t0“rice tungro virus disease”
Claim · model-written summary
ASD 7 and Ptb 18 showed the most severe discoloration after RTBV clone agroinoculation.
- Taxon
- riceOryza sativat0
- Material
- ASD 7 and Ptb 18e0
- Treatment
- agroinoculated with an infectious RTBV clonee0
- Interactor
- RTBVRice tungro bacilliform viruse0pathogen
- Outcome
- yellow orange leaf discolouratione0
- Direction
- most severee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultivars ASD 7 and Ptb 18 produced the most severe yellow orange leaf discolouration when agroinoculated with an infectious RTBV clone of the Philippine isolate”
t0“rice tungro virus disease”
Claim · model-written summary
Tungro virus transmission profiles varied among three isolates.
- Taxon
- riceOryza sativat0
- Outcome
- transmission profile of the two tungro virusese0
- Direction
- variatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was some variation in the transmission profile of the two tungro viruses among the three isolates”
t0“rice tungro virus disease”
Claim · model-written summary
Cultivar characteristics did not clearly distinguish the isolates.
- Taxon
- riceOryza sativat0
- Outcome
- distinguish isolatese0
- Direction
- no one clear sete0
- Comparator
- cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no one clear set of characteristics by which one could use cultivars to distinguish isolates”
t0“rice tungro virus disease”
Claim · model-written summary
RTBV DNA was low in Utri merah, Balimau putih, and Utri Rajapan.
- Taxon
- riceOryza sativat0
- Material
- Utri merah, Balimau putih, Utri Rajapane0
- Interactor
- RTBVRice tungro bacilliform viruse1pathogen
- Outcome
- amount of viral DNAe0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of viral DNA in agroinfected plants of cultivars Utri merah, Balimau putih, Utri Rajapan and ARC 11554 was low”
t0“rice tungro virus disease”
e1“rice tungro bacilliform virus (RTBV)”
Claim · model-written summary
RTBV DNA was low in ARC 11554.
- Taxon
- riceOryza sativat0
- Material
- ARC 11554e0
- Interactor
- RTBVRice tungro bacilliform viruse1pathogen
- Outcome
- amount of viral DNAe0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of viral DNA in agroinfected plants of cultivars Utri merah, Balimau putih, Utri Rajapan and ARC 11554 was low”
t0“rice tungro virus disease”
e1“rice tungro bacilliform virus (RTBV)”
Claim · model-written summary
RTBV DNA was high in TN1, ASD7, and Ptb 18.
- Taxon
- riceOryza sativat0
- Material
- TN1, ASD7, Ptb 18e0
- Interactor
- RTBVRice tungro bacilliform viruse2pathogene1
- Outcome
- amount of viral DNAe1
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount was high in cultivars TN1, ASD7, Ptb 18 and TKM 6”
t0“rice tungro virus disease”
e1“The amount of viral DNA”
e2“rice tungro bacilliform virus (RTBV)”
Claim · model-written summary
RTBV DNA was high in TKM 6.
- Taxon
- riceOryza sativat0
- Material
- TKM 6e0
- Interactor
- RTBVRice tungro bacilliform viruse2pathogene1
- Outcome
- amount of viral DNAe1
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount was high in cultivars TN1, ASD7, Ptb 18 and TKM 6”
t0“rice tungro virus disease”
e1“The amount of viral DNA”
e2“rice tungro bacilliform virus (RTBV)”
Claim · model-written summary
Viral coat protein and nucleic acid quantities were highly correlated in ten rice cultivars.
- Taxon
- riceOryza sativae0
- Gene
- viral nucleic acide0
- Outcome
- amount of viral coat proteine0
- Direction
- high correlatione0
- Value
- 10e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was high correlation between the amount of viral coat protein by ELISA and viral nucleic acid by DNA hybridisation on 10 agroinoculated rice cultivars”
t0“rice tungro virus disease”
Claim · model-written summary
The correlation may indicate similar proportions of encapsidated RTBV DNA across cultivars.
- Taxon
- riceOryza sativat0
- Interactor
- RTBVRice tungro bacilliform viruse0pathogen
- Outcome
- similar proportions of the total RTBV DNA are encapsidatede0
- Qualifier
- in each cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this might indicate that similar proportions of the total RTBV DNA are encapsidated in each cultivar”
t0“rice tungro virus disease”
The same questions in other papers
infection · Rice tungro bacilliform virus · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.