Abstract
Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth. There was a positive correlation between the pathogenicity of an isolate and its toxin production as assayed by both phytotoxicity on rice seedlings as well as effect on root and shoot elongation. Rice cultivars resistant to the pathogen were much less sensitive to the toxin than the susceptible cultivars. Toxin production paralleled growth of the isolates and the toxic effect of the culture filtrate was reduced, but not lost by heating by autoclaving.
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Claims 6
Claim · model-written summary
Pathogenicity of an isolate was positively correlated with its toxin production on rice seedlings.
- Taxon
- rice
Oryza sativae2 - Interactor
- Rhynchosporium oryzaee1pathogen
- Outcome
- toxin productione2
- Direction
- positive correlatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth”
e2“There was a positive correlation between the pathogenicity of an isolate and its toxin production as assayed by both phytotoxicity on rice seedlings as well as effect on root and shoot elongation”
Claim · model-written summary
Culture filtrates of Rhynchosporium oryzae isolates caused flaccidity, chlorosis and wilting of rice seedling leaves.
- Taxon
- riceOryza sativae1
- Treatment
- Cell free culture filtrates from isolates of Rhynchosporium oryzaee1
- Interactor
- Rhynchosporium oryzaee1pathogen
- Outcome
- flaccidity, chlorosis and wilting of leavese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth”
Claim · model-written summary
Culture filtrates of Rhynchosporium oryzae isolates retarded root and shoot growth of rice seedlings.
- Taxon
- riceOryza sativae1
- Treatment
- Cell free culture filtrates from isolates of Rhynchosporium oryzaee1
- Interactor
- Rhynchosporium oryzaee1pathogen
- Outcome
- retardation of root and shoot growthe1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth”
Claim · model-written summary
Rice cultivars resistant to the pathogen were much less sensitive to the toxin than susceptible cultivars.
- Taxon
- RiceOryza sativae3
- Material
- Rice cultivars resistant to the pathogene3
- Treatment
- toxine3
- Outcome
- sensitive to the toxine3
- Direction
- much lesse3
- Comparator
- susceptible cultivarse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Rice cultivars resistant to the pathogen were much less sensitive to the toxin than the susceptible cultivars”
Claim · model-written summary
Toxin production paralleled the growth of the isolates.
- Taxon
- riceOryza sativae1
- Material
- isolatese4
- Outcome
- Toxin productione4
- Direction
- parallelede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth”
e4“Toxin production paralleled growth of the isolates and the toxic effect of the culture filtrate was reduced, but not lost by heating by autoclaving”
Claim · model-written summary
Heating by autoclaving reduced, but did not abolish, the toxic effect of the culture filtrate on rice.
- Taxon
- riceOryza sativae1
- Treatment
- heating by autoclavinge4
- Outcome
- toxic effect of the culture filtratee4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cell free culture filtrates from isolates of Rhynchosporium oryzae contained a toxin which caused flaccidity, chlorosis and wilting of leaves of rice seedlings and also retardation of root and shoot growth”
e4“Toxin production paralleled growth of the isolates and the toxic effect of the culture filtrate was reduced, but not lost by heating by autoclaving”
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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.