Abstract
The application of methionine on wounded rice leaves induced the production of rice phytoalexins, sakuranetin and momilactone A. This induction resulted from stimulation of phenylalanine ammonia-lyase and naringenin 7-O-methyltransferase activity. Jasmonic acid, ethylene, and active oxygen species are important as signal transducers in disease resistance mechanisms. However, although the endogenous level of jasmonic acid rapidly increased in reaction to wound, methionine treatment could not induced endogenous JA production. Ethylene induced the production of the flavonoid phytoalexin, sakuranetin, but did not induce the production of a terpenoid phytoalexin, momilactone A. On the other hand, a free radical scavenger, Tiron, counteracted the induction of both sakuranetin and momilactone A production in methionine-treated leaves. Active oxygen species may be important in methionine-induced production of phytoalexins.
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Claims 8
Claim · model-written summary
Methionine induced sakuranetin and momilactone A in wounded rice leaves.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- wounded rice leavese0
- Treatment
- application of methioninee0
- Outcome
- production of rice phytoalexins, sakuranetin and momilactone Ae0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of methionine on wounded rice leaves induced the production of rice phytoalexins, sakuranetin and momilactone A.”
Claim · model-written summary
Methionine stimulated phenylalanine ammonia-lyase and naringenin 7-O-methyltransferase activity.
- Taxon
- riceOryza sativat0
- Gene
- phenylalanine ammonia-lyase and naringenin 7-O-methyltransferasee0
- Outcome
- stimulation of phenylalanine ammonia-lyase and naringenin 7-O-methyltransferase activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This induction resulted from stimulation of phenylalanine ammonia-lyase and naringenin 7-O-methyltransferase activity.”
t0“Rice”
Claim · model-written summary
Wounding rapidly increased endogenous jasmonic acid.
- Taxon
- riceOryza sativat0
- Treatment
- wounde0
- Outcome
- endogenous level of jasmonic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endogenous level of jasmonic acid rapidly increased in reaction to wound,”
t0“Rice”
Claim · model-written summary
Methionine did not induce endogenous jasmonic acid production.
- Taxon
- riceOryza sativat0
- Treatment
- methionine treatmente0
- Outcome
- endogenous JA productione0
- Direction
- could not inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“methionine treatment could not induced endogenous JA production.”
t0“Rice”
Claim · model-written summary
Ethylene induced sakuranetin production.
- Taxon
- riceOryza sativat0
- Treatment
- Ethylenee0
- Outcome
- production of the flavonoid phytoalexin, sakuranetine0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene induced the production of the flavonoid phytoalexin, sakuranetin, but did not induce the production of a terpenoid phytoalexin, momilactone A.”
t0“Rice”
Claim · model-written summary
Ethylene did not induce momilactone A production.
- Taxon
- riceOryza sativat0
- Treatment
- Ethylenee0
- Outcome
- production of a terpenoid phytoalexin, momilactone Ae0
- Direction
- did not inducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene induced the production of the flavonoid phytoalexin, sakuranetin, but did not induce the production of a terpenoid phytoalexin, momilactone A.”
t0“Rice”
Claim · model-written summary
Tiron counteracted methionine-induced sakuranetin and momilactone A production.
- Taxon
- riceOryza sativat0
- Treatment
- Tirone0
- Outcome
- sakuranetin and momilactone A productione0
- Direction
- counteractede0
- Comparator
- methionine-treated leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a free radical scavenger, Tiron, counteracted the induction of both sakuranetin and momilactone A production in methionine-treated leaves.”
t0“Rice”
Claim · model-written summary
Active oxygen species may mediate methionine-induced phytoalexin production.
- Taxon
- riceOryza sativat0
- Compound
- Active oxygen speciese0
- Outcome
- methionine-induced production of phytoalexinse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Active oxygen species may be important in methionine-induced production of phytoalexins.”
t0“Rice”
The same questions in other papers
ethene · yield · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- 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.