Abstract
Methyl jasmonate (MeJA) is a growth regulator that is involved in plant defense and development. Studies have demonstrated its role in pigmentation, particularly in synergy with UV-B in plant tissues. However, its role in pigment metabolism remains incompletely understood. To explore the metabolic synergistic effects, we evaluated pigments and gene expression in mature green apples. MeJA alone had no effect on pigment accumulation, while UV-B increased flavonols up to S2 stage and anthocyanins up to S3 stage. With UV-B > 2 W m –2, MeJA doubled anthocyanin accumulation compared to UV-B alone but had no synergistic effect on flavonols. MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis. These results suggest that MeJA relates to downstream gene expression in flavonoid biosynthesis with alternative regulation of the anthocyanin pathway in UV-B-irradiated apples.
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Claims 11
Claim · model-written summary
MeJA alone had no effect on apple pigment accumulation.
- Taxon
- Apple
Malus domesticat0 - Treatment
- MeJA alonee0
- Outcome
- pigment accumulatione0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA alone had no effect on pigment accumulation, while UV-B increased flavonols up to S2 stage and anthocyanins up to S3 stage.”
t0“Apple Fruit”
Claim · model-written summary
UV-B increased flavonols through S2 stage.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- S2 stagee0
- Treatment
- UV-Be0
- Outcome
- flavonolse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA alone had no effect on pigment accumulation, while UV-B increased flavonols up to S2 stage and anthocyanins up to S3 stage.”
t0“Apple Fruit”
Claim · model-written summary
UV-B increased anthocyanins through S3 stage.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- S3 stagee0
- Treatment
- UV-Be0
- Outcome
- anthocyaninse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA alone had no effect on pigment accumulation, while UV-B increased flavonols up to S2 stage and anthocyanins up to S3 stage.”
t0“Apple Fruit”
Claim · model-written summary
At UV-B above 2 W m –2, MeJA doubled apple anthocyanin accumulation compared with UV-B alone.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Outcome
- anthocyanin accumulatione0
- Direction
- doublede0
- Qualifier
- UV-B > 2 W m –2e0
- Comparator
- UV-B alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With UV-B > 2 W m –2, MeJA doubled anthocyanin accumulation compared to UV-B alone but had no synergistic effect on flavonols.”
t0“Apple Fruit”
Claim · model-written summary
MeJA had no synergistic effect on flavonols under UV-B.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Outcome
- flavonolse0
- Direction
- no synergistic effecte0
- Comparator
- UV-B alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With UV-B > 2 W m –2, MeJA doubled anthocyanin accumulation compared to UV-B alone but had no synergistic effect on flavonols.”
t0“Apple Fruit”
Claim · model-written summary
MeJA upregulated structural genes linked to late flavonoid biosynthesis.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Gene
- structural genese0
- Outcome
- structural genese0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis.”
t0“Apple Fruit”
Claim · model-written summary
MeJA upregulated transcription factors linked to late flavonoid biosynthesis.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Gene
- transcription factorse0
- Outcome
- transcription factorse0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis.”
t0“Apple Fruit”
Claim · model-written summary
MeJA induced anthocyanin hyperaccumulation.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Outcome
- anthocyanin hyperaccumulatione0
- Direction
- inducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis.”
t0“Apple Fruit”
Claim · model-written summary
MeJA did not affect early flavonoid biosynthetic genes.
- Taxon
- AppleMalus domesticat0
- Treatment
- MeJAe0
- Gene
- early flavonoid biosynthetic genese0
- Outcome
- early flavonoid biosynthetic genese0
- Direction
- without affectinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis.”
t0“Apple Fruit”
Claim · model-written summary
MeJA did not affect MdFLS.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA selectively upregulated structural genes and transcription factors involved in the late biosynthetic pathway, transport, and the MYB-bHLH-WD40 complex, inducing anthocyanin hyperaccumulation without affecting early flavonoid biosynthetic genes or MdFLS, which controls flavonol biosynthesis.”
t0“Apple Fruit”
Claim · model-written summary
The authors infer that MeJA relates to downstream flavonoid gene expression in UV-B-irradiated apples.
- Taxon
- applesMalus domesticae0
- Treatment
- MeJAe0
- Outcome
- downstream gene expression in flavonoid biosynthesise0
- Qualifier
- UV-B-irradiatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results suggest that MeJA relates to downstream gene expression in flavonoid biosynthesis with alternative regulation of the anthocyanin pathway in UV-B-irradiated apples.”
t0“Apple Fruit”
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See all 8 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.