Abstract
The resistance of enzymolytic chitooligosaccharides from housefly larvae against Phytophthora parasitica var.nicotianae(P.parasitica) and the mechanism of that were studied preliminarily.The results showed that chitooligosaccharides greatly affected the morphology of mycelia and sporiparous ability of P.parasitica,which resulted in hyphal distortion,stunt,and swollen branches,at the same time,inhibited zoosporangia production.The tobacco seedling treated with chitooligosaccharides prior to P.parasitica inoculation obtains induced resistance against tobacco black shank,and the activities of isoenzymes peroxidase(POD) and polyphenoloxidase(PPO) in tobacco plant increase significantly,pathogen inoculation after chitooligosaccharides spraying causes that the isoenzymes in tobacco plants had more enzyme bands and deep in colour.Therefore,it is considered that the resistance of enzymolytic chitooligosaccharides from housefly larvae against black shank is related to these two isoenzymes.
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Claims 6
Claim · model-written summary
Chitooligosaccharides distorted and stunted pathogen hyphae and swelled branches.
- Treatment
- chitooligosaccharidese0
- Interactor
- P.parasitica
Phytophthora nicotianaee0pathogen - Outcome
- hyphal distortion,stunt,and swollen branchese0
Not reportedTaxonComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitooligosaccharides greatly affected the morphology of mycelia and sporiparous ability of P.parasitica,which resulted in hyphal distortion,stunt,and swollen branches,at the same time,inhibited zoosporangia production.”
Claim · model-written summary
Chitooligosaccharides inhibited P. parasitica zoosporangia production.
- Treatment
- chitooligosaccharidese0
- Interactor
- P.parasiticaPhytophthora nicotianaee0pathogen
- Outcome
- zoosporangia productione0
- Direction
- inhibitede0
Not reportedTaxonComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitooligosaccharides greatly affected the morphology of mycelia and sporiparous ability of P.parasitica,which resulted in hyphal distortion,stunt,and swollen branches,at the same time,inhibited zoosporangia production.”
Claim · model-written summary
Pretreatment with chitooligosaccharides induced tobacco seedling resistance to black shank.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- treated with chitooligosaccharides prior to P.parasitica inoculatione0
- Interactor
- P.parasiticaPhytophthora nicotianaee0pathogen
- Outcome
- induced resistance against tobacco black shanke0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tobacco seedling treated with chitooligosaccharides prior to P.parasitica inoculation obtains induced resistance against tobacco black shank”
Claim · model-written summary
Chitooligosaccharides significantly increased tobacco POD and PPO activities.
- Taxon
- tobaccoNicotiana tabacume0
- Gene
- peroxidase(POD)e0
- Outcome
- activities of isoenzymes peroxidase(POD) and polyphenoloxidase(PPO)e0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of isoenzymes peroxidase(POD) and polyphenoloxidase(PPO) in tobacco plant increase significantly”
Claim · model-written summary
Pathogen inoculation after spraying gave tobacco isoenzymes more and darker bands.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- pathogen inoculation after chitooligosaccharides sprayinge0
- Interactor
- pathogene0pathogen
- Outcome
- enzyme bandse0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pathogen inoculation after chitooligosaccharides spraying causes that the isoenzymes in tobacco plants had more enzyme bands and deep in colour.”
Claim · model-written summary
The authors related induced black shank resistance to two isoenzymes.
- Outcome
- resistance of enzymolytic chitooligosaccharides from housefly larvae against black shanke0
- Qualifier
- these two isoenzymese0
Not reportedTaxon
Verbatim
e0“the resistance of enzymolytic chitooligosaccharides from housefly larvae against black shank is related to these two isoenzymes.”
The same questions in other papers
Phytophthora nicotianae · disease · Nicotiana tabacum (tobacco)Positive and negative results
2 in the opposite direction
- negative
- no effect
chitooligosaccharide · Phytophthora nicotianae · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- positive
- positive
chitooligosaccharide · disease · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
inoculation · disease · Nicotiana tabacum (tobacco)Positive and negative results
36 papers in the same direction as this paper · 49 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
83 papers more in this group
See all 87 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.