Abstract
Abscisic acid (ABA) is a well-known phytohormone that initiates seed dormancy. This is the first study elucidating the variability and relationship in the accumulation of phenolics, melatonin, and momilactones A (MA) and B (MB) during a rice (Oryza sativa L. var. Koshihikari, Akisakari, and Akiroman) seed dormancy process treated by ABA with concentrations of 0 (control), 10, 50, and 100 µM over 8 days. Accordingly, increased concentrations of ABA resulted in an extended dormancy period of rice seeds, along with reducing fresh weight while maintaining stable dry weight in all varieties. ABA treatment elevated total phenolic (TPC) and flavonoid (TFC) contents. Particularly, quantities of ferulic and cinnamic acids were enhanced, in line with the promoted antioxidant capacities of ABA-treated rice seeds. Momilactone contents were increased (3.8% to 32.6% for MA and 16.3% to 31.3% for MB) during the extension of rice seed dormancy regulated by ABA. Notably, the accumulation tendency of MA and MB under ABA effects was consistent with that of melatonin, a phytohormone associated with seed dormancy prolongation. The finding implies that MA and MB may play a role alongside melatonin in signaling the extended dormancy of rice seeds through the ABA pathway. Future research should delve into the molecular mechanisms underlying these observations.
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Claims 11
Claim · model-written summary
Higher ABA concentrations extended rice seed dormancy.
- Taxon
- Rice
Oryza sativat0 - Treatment
- increased concentrations of ABAe0
- Outcome
- dormancy periode0
- Direction
- extendede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased concentrations of ABA resulted in an extended dormancy period of rice seeds”
t0“Rice”
Claim · model-written summary
Higher ABA concentrations reduced fresh weight of rice seeds.
- Taxon
- RiceOryza sativat0
- Treatment
- increased concentrations of ABAe0
- Outcome
- fresh weighte0
- Direction
- reducinge0
- Qualifier
- all varietiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased concentrations of ABA resulted in an extended dormancy period of rice seeds, along with reducing fresh weight while maintaining stable dry weight in all varieties.”
t0“Rice”
Claim · model-written summary
Dry weight remained stable under higher ABA concentrations.
- Taxon
- RiceOryza sativat0
- Treatment
- increased concentrations of ABAe0
- Outcome
- dry weighte0
- Direction
- stablee0
- Qualifier
- all varietiese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased concentrations of ABA resulted in an extended dormancy period of rice seeds, along with reducing fresh weight while maintaining stable dry weight in all varieties.”
t0“Rice”
Claim · model-written summary
ABA elevated total phenolic content.
- Taxon
- RiceOryza sativat0
- Treatment
- ABA treatmente0
- Outcome
- total phenolic (TPC)e0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatment elevated total phenolic (TPC) and flavonoid (TFC) contents.”
t0“Rice”
Claim · model-written summary
ABA elevated flavonoid content.
- Taxon
- RiceOryza sativat0
- Treatment
- ABA treatmente0
- Outcome
- flavonoid (TFC) contentse0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA treatment elevated total phenolic (TPC) and flavonoid (TFC) contents.”
t0“Rice”
Claim · model-written summary
Ferulic acid quantity increased with ABA treatment.
- Taxon
- RiceOryza sativat0
- Treatment
- ABA-treatede0
- Outcome
- ferulice0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quantities of ferulic and cinnamic acids were enhanced, in line with the promoted antioxidant capacities of ABA-treated rice seeds.”
t0“Rice”
Claim · model-written summary
Cinnamic acid quantity increased with ABA treatment.
- Taxon
- RiceOryza sativat0
- Treatment
- ABA-treatede0
- Outcome
- cinnamic acidse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quantities of ferulic and cinnamic acids were enhanced, in line with the promoted antioxidant capacities of ABA-treated rice seeds.”
t0“Rice”
Claim · model-written summary
ABA treatment promoted seed antioxidant capacity.
- Taxon
- RiceOryza sativat0
- Treatment
- ABA-treatede0
- Outcome
- antioxidant capacitiese0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“promoted antioxidant capacities of ABA-treated rice seeds”
t0“Rice”
Claim · model-written summary
Momilactone A increased by 3.8% to 32.6% during ABA regulated dormancy extension.
- Taxon
- RiceOryza sativat0
- Treatment
- ABAe0
- Outcome
- Momilactone contentse0
- Direction
- increasede0
- Value
- 3.8% to 32.6%e0
- Qualifier
- for MAe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Momilactone contents were increased (3.8% to 32.6% for MA and 16.3% to 31.3% for MB) during the extension of rice seed dormancy regulated by ABA.”
t0“Rice”
Claim · model-written summary
Momilactone B increased by 16.3% to 31.3% during ABA regulated dormancy extension.
- Taxon
- RiceOryza sativat0
- Treatment
- ABAe0
- Outcome
- Momilactone contentse0
- Direction
- increasede0
- Value
- 16.3% to 31.3%e0
- Qualifier
- for MBe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Momilactone contents were increased (3.8% to 32.6% for MA and 16.3% to 31.3% for MB) during the extension of rice seed dormancy regulated by ABA.”
t0“Rice”
Claim · model-written summary
Momilactone A and B accumulation followed the same tendency as melatonin under ABA.
- Taxon
- RiceOryza sativat0
- Treatment
- ABAe0
- Compound
- melatonine0
- Outcome
- accumulation tendency of MA and MBe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulation tendency of MA and MB under ABA effects was consistent with that of melatonin”
t0“Rice”
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