Abstract
ABSTRACT Avirulent isolates of Pyricularia oryzae and isolates of Bipolaris sorokiniana, a nonrice pathogen, were used to suppress rice blast caused by P. oryzae. In greenhouse experiments, both fungi substantially reduced leaf blast when applied 24 h or more before the pathogen. B. sorokiniana, but not avirulent isolates of P. oryzae, systemically reduced disease in leaf 5 when applied to whole plants at the four-leaf stage. In field experiments, both fungi were able to reduce neck blast significantly. No increase in grain yield was obtained by using avirulent isolates of P. oryzae, whereas five sprays with B. sorokiniana from seedling to heading stages increased the grain yield in two of three experiments conducted at two locations in Nepal. The significant increase in yield was observed under high inoculum pressure of P. oryzae. Induced resistance is suggested to be involved in the suppression of disease.
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Claims 9
Claim · model-written summary
Avirulent P. oryzae applied at least 24 hours before the pathogen substantially reduced leaf blast in greenhouse experiments.
- Taxon
- Rice
Oryza sativat0 - Treatment
- Avirulent Pyricularia oryzaet0
- Outcome
- leaf blaste0
- Direction
- reducede0
- Qualifier
- 24 h or more before the pathogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both fungi substantially reduced leaf blast when applied 24 h or more before the pathogen”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
B. sorokiniana applied at least 24 hours before the pathogen substantially reduced leaf blast in greenhouse experiments.
- Taxon
- RiceOryza sativat0
- Treatment
- Bipolaris sorokinianat0
- Outcome
- leaf blaste0
- Direction
- reducede0
- Qualifier
- 24 h or more before the pathogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both fungi substantially reduced leaf blast when applied 24 h or more before the pathogen”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
B. sorokiniana applied to whole plants at the four-leaf stage systemically reduced disease in leaf 5.
- Taxon
- RiceOryza sativat0
- Treatment
- B. sorokinianae0
- Outcome
- disease in leaf 5e0
- Direction
- reducede0
- Comparator
- avirulent isolates of P. oryzaee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. sorokiniana, but not avirulent isolates of P. oryzae, systemically reduced disease in leaf 5 when applied to whole plants at the four-leaf stage”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
Avirulent P. oryzae did not systemically reduce disease in leaf 5 after whole-plant application at the four-leaf stage.
- Taxon
- RiceOryza sativat0
- Treatment
- avirulent isolates of P. oryzaee0
- Outcome
- disease in leaf 5e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. sorokiniana, but not avirulent isolates of P. oryzae, systemically reduced disease in leaf 5 when applied to whole plants at the four-leaf stage”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
Avirulent P. oryzae significantly reduced neck blast in field experiments.
- Taxon
- RiceOryza sativat0
- Treatment
- Avirulent Pyricularia oryzaet0
- Outcome
- neck blaste0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field experiments, both fungi were able to reduce neck blast significantly”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
B. sorokiniana significantly reduced neck blast in field experiments.
- Taxon
- RiceOryza sativat0
- Treatment
- Bipolaris sorokinianat0
- Outcome
- neck blaste0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In field experiments, both fungi were able to reduce neck blast significantly”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
Avirulent P. oryzae produced no increase in grain yield.
- Taxon
- RiceOryza sativat0
- Treatment
- avirulent isolates of P. oryzaee0
- Outcome
- grain yielde0
- Direction
- No increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No increase in grain yield was obtained by using avirulent isolates of P. oryzae”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
Five B. sorokiniana sprays increased grain yield in two of three experiments at two locations in Nepal, under high P. oryzae inoculum pressure.
- Taxon
- RiceOryza sativat0
- Treatment
- five sprays with B. sorokinianae0
- Outcome
- grain yielde0
- Direction
- increasede0
- Qualifier
- two of three experimentse0
- Setting
- Nepale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“five sprays with B. sorokiniana from seedling to heading stages increased the grain yield in two of three experiments conducted at two locations in Nepal”
t0“Suppression of Rice Blast by Preinoculation with Avirulent Pyricularia oryzae and the Nonrice Pathogen Bipolaris sorokiniana”
Claim · model-written summary
Induced resistance was suggested to contribute to disease suppression.
- Taxon
- RiceOryza sativat0
- Outcome
- suppression of diseasee0
- Qualifier
- Induced resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Induced resistance is suggested to be involved in the suppression of disease.”
t0“Rice”
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See all 691 papers →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.