Abstract
Chitosan, a polymer of beta-1,4-linked glucosamine residues with a strong affinity for DNA, was implicated in the pea pod-Fusarium solani interaction as an elicitor of phytoalexin production, an inhibitor of fungal growth and a chemical which can protect pea tissue from infection by F. solani f. sp. pisi. Purified Fusarium fungal cell walls can elicit phytoalexin production in pea pod tissue. Enzymes from acetone powders of pea tissue release eliciting components from the F. solani f. sp. phaseoli cell walls. Hydrochloric acid-hydrolyzed F. solani cell walls are about 20% glucosamine. The actual chitosan content of F. solani cell walls is about 1%. However, chitosan assays and histochemical observations indicate that chitosan content of F. solani spores and adjacent pea cells increases following inoculation. Dormant F. solani spores also accumulate chitosan. Concentrations of nitrous acid-cleaved chitosan as low as 0.9 microgram per milliliter and 3 micrograms per milliliter elicit phytoalexin induction and inhibit germination of F. solani macroconidia, respectively. When chitosan is applied to pea pod tissue with or prior to F. solani f. sp. pisi, the tissue is protected from infection.
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Claims 9
Claim · model-written summary
Purified Fusarium cell walls elicited phytoalexin production in pea pods.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- Purified Fusarium fungal cell wallse0
- Outcome
- phytoalexin productione0
- Direction
- elicite0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Purified Fusarium fungal cell walls can elicit phytoalexin production in pea pod tissue”
Claim · model-written summary
Pea tissue enzymes released eliciting components from F. solani f. sp. phaseoli walls.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- F. solani f. sp. phaseoliFusarium phaseolie0pathogen
- Outcome
- release eliciting componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Enzymes from acetone powders of pea tissue release eliciting components from the F. solani f. sp. phaseoli cell walls”
Claim · model-written summary
Hydrolyzed F. solani walls contained about 20% glucosamine.
- Taxon
- PeaLathyrus oleraceust0
- Interactor
- F. solani
_Sacc._5393379.jpg?width=60)
Fusarium solanie0pathogen - Outcome
- F. solani cell walls are about 20% glucosaminee0
- Value
- 20%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Sacc._5393379.jpg?width=500)
Verbatim
e0“Hydrochloric acid-hydrolyzed F. solani cell walls are about 20% glucosamine”
t0“Pea”
Claim · model-written summary
F. solani walls contained about 1% chitosan.
- Taxon
- PeaLathyrus oleraceust0
- Interactor
- F. solaniFusarium solanie0pathogen
- Outcome
- chitosan content of F. solani cell wallse0
- Value
- 1%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan content of F. solani cell walls is about 1%”
t0“Pea”
Claim · model-written summary
Chitosan content increased in F. solani spores and adjacent pea cells after inoculation.
- Taxon
- peaLathyrus oleraceuse0
- Interactor
- F. solaniFusarium solanie0pathogen
- Outcome
- chitosan content of F. solani spores and adjacent pea cellse0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan content of F. solani spores and adjacent pea cells increases following inoculation”
Claim · model-written summary
Dormant F. solani spores accumulated chitosan.
- Taxon
- PeaLathyrus oleraceust0
- Interactor
- F. solaniFusarium solanie0pathogen
- Outcome
- F. solani spores also accumulate chitosane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dormant F. solani spores also accumulate chitosan”
t0“Pea”
Claim · model-written summary
Nitrous acid-cleaved chitosan at 0.9 microgram per milliliter elicited phytoalexin induction.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- nitrous acid-cleaved chitosan as low as 0.9 microgram per millilitere0
- Outcome
- phytoalexin inductione0
- Direction
- elicite0
- Value
- 0.9 microgram per millilitere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of nitrous acid-cleaved chitosan as low as 0.9 microgram per milliliter and 3 micrograms per milliliter elicit phytoalexin induction and inhibit germination of F. solani macroconidia, respectively”
t0“Pea”
Claim · model-written summary
Nitrous acid-cleaved chitosan at 3 micrograms per milliliter inhibited F. solani macroconidial germination.
- Taxon
- PeaLathyrus oleraceust0
- Treatment
- nitrous acid-cleaved chitosane0
- Interactor
- F. solaniFusarium solanie0pathogen
- Outcome
- germination of F. solani macroconidiae0
- Direction
- inhibite0
- Value
- 3 micrograms per millilitere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of nitrous acid-cleaved chitosan as low as 0.9 microgram per milliliter and 3 micrograms per milliliter elicit phytoalexin induction and inhibit germination of F. solani macroconidia, respectively”
t0“Pea”
Claim · model-written summary
Chitosan applied with or before F. solani f. sp. pisi protected pea pods from infection.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- chitosane0
- Interactor
- F. solani f. sp. pisiFusarium vanetteniie0pathogen
- Outcome
- protected from infectione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When chitosan is applied to pea pod tissue with or prior to F. solani f. sp. pisi, the tissue is protected from infection”
The same questions in other papers
Fusarium · yield · Lathyrus oleraceus (pea)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
chitosan · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.