Abstract
Abstract In this study, the effects of gamma irradiation on the resistance of pear fruit against Penicillium expansum , the causal agent of blue mould disease, were investigated. A low dose of gamma irradiation for 14 days increased the disease resistance and firmness of pear fruits. Remarkably, exposure to 200 Gy of gamma irradiation significantly maintained fruit firmness, markedly reduced disease incidence and enhanced the activity of defence‐related enzymes (e.g., β‐1,3‐glucanase, phenylalanine ammonia lyase, peroxidase and polyphenol oxidase) and expression of pathogenesis‐related ( PR ) genes (e.g., PR ‐1 , PR ‐3 and PR ‐4 ). Therefore, the gamma irradiation‐induced resistance against P. expansum involves both metabolic changes and the induction of expression of defence‐related genes. In addition, scanning electron microscopic analysis revealed that gamma irradiation significantly inhibits the growth of P. expansum . These results suggest that exposure of mature harvested pear fruits to artificial gamma irradiation confers fungal disease resistance; therefore, gamma irradiation represents an important strategy for controlling postharvest diseases in pear fruit.
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Claims 8
Claim · model-written summary
A low irradiation dose increased pear fruit disease resistance over 14 days.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0t0 - Treatment
- A low dose of gamma irradiatione0
- Interactor
- Penicillium expansum
Penicillium expansume0t0pathogen - Outcome
- disease resistancee0
- Direction
- increasede0
- Qualifier
- 14 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“A low dose of gamma irradiation for 14 days increased the disease resistance and firmness of pear fruits.”
t0“pear (Pyrus pyrifolia “Niitaka”) against Penicillium expansum”
Claim · model-written summary
A low irradiation dose increased pear fruit firmness over 14 days.
- Taxon
- pearPyrus communise0t0
- Treatment
- A low dose of gamma irradiatione0
- Outcome
- firmnesse0
- Direction
- increasede0
- Qualifier
- 14 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A low dose of gamma irradiation for 14 days increased the disease resistance and firmness of pear fruits.”
t0“pear (Pyrus pyrifolia “Niitaka”)”
Claim · model-written summary
Exposure to 200 Gy significantly maintained pear fruit firmness.
- Taxon
- pearPyrus communise0t0
- Treatment
- 200 Gy of gamma irradiatione0
- Outcome
- fruit firmnesse0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to 200 Gy of gamma irradiation significantly maintained fruit firmness”
t0“pear (Pyrus pyrifolia “Niitaka”)”
Claim · model-written summary
Exposure to 200 Gy markedly reduced pear blue mould disease incidence.
- Taxon
- pearPyrus communise0t0
- Treatment
- 200 Gy of gamma irradiatione0
- Interactor
- Penicillium expansumPenicillium expansume0t0pathogen
- Outcome
- disease incidencee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to 200 Gy of gamma irradiation significantly maintained fruit firmness, markedly reduced disease incidence”
t0“pear (Pyrus pyrifolia “Niitaka”) against Penicillium expansum”
Claim · model-written summary
Exposure to 200 Gy enhanced activity of four defence-related enzymes in pear fruit.
- Taxon
- pearPyrus communise0t0
- Treatment
- 200 Gy of gamma irradiatione0
- Outcome
- activity of defence‐related enzymese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to 200 Gy of gamma irradiation significantly maintained fruit firmness, markedly reduced disease incidence and enhanced the activity of defence‐related enzymes (e.g., β‐1,3‐glucanase, phenylalanine ammonia lyase, peroxidase and polyphenol oxidase)”
t0“pear (Pyrus pyrifolia “Niitaka”)”
Claim · model-written summary
Exposure to 200 Gy enhanced expression of pear pathogenesis-related genes.
- Taxon
- pearPyrus communise0t0
- Treatment
- 200 Gy of gamma irradiatione0
- Outcome
- expression of pathogenesis‐related ( PR ) genese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to 200 Gy of gamma irradiation significantly maintained fruit firmness, markedly reduced disease incidence and enhanced the activity of defence‐related enzymes (e.g., β‐1,3‐glucanase, phenylalanine ammonia lyase, peroxidase and polyphenol oxidase) and expression of pathogenesis‐related ( PR ) genes (e.g., PR ‐1 , PR ‐3 and PR ‐4 )”
t0“pear (Pyrus pyrifolia “Niitaka”)”
Claim · model-written summary
Gamma irradiation significantly inhibited P. expansum growth.
- Taxon
- P. expansumPenicillium expansume0
- Treatment
- gamma irradiatione0
- Outcome
- growth of P. expansume0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gamma irradiation significantly inhibits the growth of P. expansum”
Claim · model-written summary
The authors proposed gamma irradiation as a strategy to control postharvest pear diseases.
- Taxon
- pearPyrus communise0t0
- Treatment
- gamma irradiatione0
- Outcome
- controlling postharvest diseasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gamma irradiation represents an important strategy for controlling postharvest diseases in pear fruit”
t0“pear (Pyrus pyrifolia “Niitaka”)”
The same questions in other papers
radiation · quality: postharvest · Pyrus communis (pear)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.