Abstract
The relationship between the phytotoxin (C7H7N5O2) produced by Pseudomonas glumae and its virulence was studied. All of the Phytotoxin productive strains were virulent to rice plants with a few exception, whereas all the phytotoxin non-productive strains were avirulent. A striking difference in the time course of phytotoxin production was observed between virulent strains and avirulent strains of P. glumae. The phytotoxin inhibited elongation of sprouts and roots of rice seedlings almost completely at 10μg/ml. Rice panicles, which were treated with the phytotoxin at concentrations of 2.5 or 25μg/ml by dipping for 10min at the flowering stage, produced a brown band on the palea and lemma, a characteristic symptom of the bacterial grain rot of rice. The phytotoxin was isolated not only from culture filtrates, but also from rice seedlings infected with P. glumae. These results suggest that the phytotoxin produced by P. glumae will be closely associated with its virulence.
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Claims 7
Claim · model-written summary
Most phytotoxin-producing Pseudomonas glumae strains were virulent to rice.
- Taxon
- rice
Oryza sativae0 - Interactor
- Phytotoxin productive strainse0pathogen
- Outcome
- virulent to rice plantse0
- Qualifier
- with a few exceptione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All of the Phytotoxin productive strains were virulent to rice plants with a few exception”
Claim · model-written summary
All non-producing strains were avirulent to rice.
- Taxon
- riceOryza sativae1
- Interactor
- phytotoxin non-productive strainse0pathogen
- Outcome
- avirulente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all the phytotoxin non-productive strains were avirulent”
e1“rice plants”
Claim · model-written summary
Virulent and avirulent strains differed strikingly in the time course of phytotoxin production.
- Taxon
- riceOryza sativae1
- Interactor
- P. glumae
Burkholderia glumaee0pathogen - Outcome
- time course of phytotoxin productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A striking difference in the time course of phytotoxin production was observed between virulent strains and avirulent strains of P. glumae”
e1“rice plants”
Claim · model-written summary
Phytotoxin at 10μg/ml almost completely inhibited rice seedling sprout and root elongation.
- Taxon
- riceOryza sativae0
- Organ / stage
- rice seedlingse0
- Treatment
- phytotoxine0
- Outcome
- elongation of sprouts and rootse0
- Direction
- inhibitede0
- Value
- 10μg/mle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phytotoxin inhibited elongation of sprouts and roots of rice seedlings almost completely at 10μg/ml”
Claim · model-written summary
Phytotoxin dipping induced a brown band on rice panicle palea and lemma.
- Taxon
- RiceOryza sativae0
- Organ / stage
- paniclese0
- Treatment
- phytotoxin at concentrations of 2.5 or 25μg/mle0
- Outcome
- a brown band on the palea and lemmae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice panicles, which were treated with the phytotoxin at concentrations of 2.5 or 25μg/ml by dipping for 10min at the flowering stage, produced a brown band on the palea and lemma”
Claim · model-written summary
Phytotoxin was isolated from infected rice seedlings.
- Taxon
- riceOryza sativae0
- Organ / stage
- rice seedlingse0
- Interactor
- P. glumaeBurkholderia glumaee0pathogen
- Outcome
- phytotoxin was isolatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phytotoxin was isolated not only from culture filtrates, but also from rice seedlings infected with P. glumae”
Claim · model-written summary
Authors inferred a close association of phytotoxin production with P. glumae virulence.
- Taxon
- riceOryza sativae1
- Interactor
- P. glumaeBurkholderia glumaee0pathogen
- Compound
- phytotoxine0
- Outcome
- virulencee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the phytotoxin produced by P. glumae will be closely associated with its virulence”
e1“from rice seedlings infected with P. glumae”
The same questions in other papers
pathogen product · growth · Oryza sativa (rice)Positive and negative results
9 papers in the same direction as this paper · 13 in the opposite direction
- negative
- positive
- positive
19 papers more in this group
See all 23 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.