Abstract
Cerebrosides A and C, compounds categorized as glycosphingolipids, were isolated in our previous study from the rice blast fungus (Magnaporthe grisea) as novel elicitors which induce the synthesis of rice phytoalexins. In this paper, these cerebroside elicitors showed phytoalexin-inducing activity when applied to plants by spray treatment and also induced the expression of pathogenesis-related (PR) proteins in rice leaves. This elicitor activity of the cerebrosides showed the structural specificity as that for the induction of phytoalexins. Ceramides prepared from the cerebrosides by removal of glucose also showed the elicitor activity even in lower level compared to the cerebrosides. In field experiments, the cerebroside elicitors effectively protected rice plants against the rice blast fungus, an economically devastating agent of disease of rice in Japan. The cerebrosides elicitors protected rice plants from other disease as well and were found to occur in a wide range of different phytopathogens, indicating that cerebrosides function as general elicitors in a wide variety of rice-pathogen interactions.
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Claims 7
Claim · model-written summary
Sprayed cerebroside elicitors induced phytoalexins.
- Taxon
- rice plants
Oryza sativat0 - Organ / stage
- rice leavese0
- Treatment
- cerebroside elicitorse0
- Outcome
- phytoalexin-inducing activitye0
- Direction
- inducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“these cerebroside elicitors showed phytoalexin-inducing activity when applied to plants by spray treatment and also induced the expression of pathogenesis-related (PR) proteins in rice leaves”
Claim · model-written summary
Cerebroside elicitors induced pathogenesis-related protein expression in rice leaves.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- rice leavese0
- Treatment
- cerebroside elicitorse0
- Outcome
- expression of pathogenesis-related (PR) proteinse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“these cerebroside elicitors showed phytoalexin-inducing activity when applied to plants by spray treatment and also induced the expression of pathogenesis-related (PR) proteins in rice leaves”
Claim · model-written summary
Cerebroside elicitor activity showed structural specificity.
- Taxon
- rice plantsOryza sativat0
- Outcome
- structural specificitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“This elicitor activity of the cerebrosides showed the structural specificity as that for the induction of phytoalexins”
Claim · model-written summary
Ceramides showed lower elicitor activity than cerebrosides.
- Taxon
- rice plantsOryza sativat0
- Treatment
- Ceramidese0
- Outcome
- elicitor activitye0
- Direction
- lowere0
- Comparator
- cerebrosidese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“Ceramides prepared from the cerebrosides by removal of glucose also showed the elicitor activity even in lower level compared to the cerebrosides”
Claim · model-written summary
Cerebroside elicitors protected rice plants against the rice blast fungus in field experiments.
- Taxon
- rice plantsOryza sativat0
- Treatment
- cerebroside elicitorse0
- Interactor
- rice blast fungus
Pyricularia oryzaee0pathogen - Outcome
- protected rice plants against the rice blast funguse0
- Setting
- field experimentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“In field experiments, the cerebroside elicitors effectively protected rice plants against the rice blast fungus”
Claim · model-written summary
Cerebroside elicitors protected rice from another disease.
- Taxon
- rice plantsOryza sativat0
- Treatment
- cerebrosides elicitorse0
- Outcome
- protected rice plants from other diseasee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“The cerebrosides elicitors protected rice plants from other disease as well”
Claim · model-written summary
Cerebrosides occurred in a wide range of phytopathogens.
- Taxon
- rice plantsOryza sativat0
- Interactor
- phytopathogense0pathogen
- Outcome
- occur in a wide range of different phytopathogense0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants”
e0“were found to occur in a wide range of different phytopathogens”
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See all 17 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.