Abstract
The disease resistance of banana fruit is gradually reduced during ripening. In order to study the disease resistance related enzymes,polyphenol oxidase(PPO),peroxidase(POD),superoxide dismutase(SOD),phenylalanine ammonia lyase(PAL) and lipoxygenase(LOX) in two ripening stages of banana fruit, green maturing and yellow ripening,infected with Colletotrichum musae were investigated and studied during 5 days. No mater whether these banana fruit were inoculated or not, the activities of PPO, POD and SOD were lower but the activities of PAL and LOX were higher in the skins of green maturing banana skins than that in the skins of yellow ripening ones. In both ripening stage fruit, inoculation with C. musae resulted in the decreases in the activities of SOD and PAL,but did not affect the activities of PPO,POD and LOX. The lower level of PPO,POD and SOD activities might cause the accumulation of active radicals and phenolic materials, which lead to the hypersensitive reaction. The higher level of PAL and LOX activities might be advantageous to the phenyl propanes metabolism,lipid peroxidation and the formation of antibiotic substances. PAL and LOX might be the key enzymes of disease resistance in banana fruit.
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Claims 8
Claim · model-written summary
Banana disease resistance declined during ripening.
Verbatim
e0“The disease resistance of banana fruit is gradually reduced during ripening”
Claim · model-written summary
Green maturing banana skins had lower PPO, POD and SOD activities than yellow ripening skins.
Verbatim
e0“the activities of PPO, POD and SOD were lower but the activities of PAL and LOX were higher in the skins of green maturing banana skins than that in the skins of yellow ripening ones”
Claim · model-written summary
Green maturing banana skins had higher PAL and LOX activities than yellow ripening skins.
Verbatim
e0“the activities of PPO, POD and SOD were lower but the activities of PAL and LOX were higher in the skins of green maturing banana skins than that in the skins of yellow ripening ones”
Claim · model-written summary
C. musae inoculation reduced SOD and PAL activities at both ripening stages.
- Taxon
- fruite0
- Treatment
- inoculation with C. musaee0
- Interactor
- C. musae
-_Anthracnose_caused_by_Colletotrichum_musae.jpg?width=60)
Colletotrichum musaee0pathogen - Outcome
- activities of SOD and PALe0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
-_Anthracnose_caused_by_Colletotrichum_musae.jpg?width=500)
Verbatim
e0“In both ripening stage fruit, inoculation with C. musae resulted in the decreases in the activities of SOD and PAL”
Claim · model-written summary
C. musae inoculation did not affect PPO, POD or LOX activities.
- Taxon
- bananat0
- Treatment
- inoculation with C. musaee0
- Interactor
- C. musaeColletotrichum musaee0pathogen
- Outcome
- activities of PPO,POD and LOXe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“banana fruit infected with Colletotrichum musae”
e0“inoculation with C. musae resulted in the decreases in the activities of SOD and PAL,but did not affect the activities of PPO,POD and LOX”
Claim · model-written summary
Lower PPO, POD and SOD activities might cause radical and phenolic accumulation leading to hypersensitivity.
Verbatim
t0“banana fruit infected with Colletotrichum musae”
e0“The lower level of PPO,POD and SOD activities might cause the accumulation of active radicals and phenolic materials, which lead to the hypersensitive reaction”
Claim · model-written summary
Higher PAL and LOX activities might favor phenylpropane metabolism, lipid peroxidation and antibiotic formation.
Verbatim
t0“banana fruit infected with Colletotrichum musae”
e0“The higher level of PAL and LOX activities might be advantageous to the phenyl propanes metabolism,lipid peroxidation and the formation of antibiotic substances”
Claim · model-written summary
PAL and LOX might be key enzymes for disease resistance.
Verbatim
e0“PAL and LOX might be the key enzymes of disease resistance in banana fruit”
The same questions in other papers
inoculation · physiology: antioxidant enzymes · MusaPositive and negative results
2 papers in the same direction as this paper · 9 in the opposite direction
- positive
- positive
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See all 12 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.