Abstract
Light is one of the most important environmental factors that affect plant growth and development. It also stimulates anthocyanin biosynthesis in plants. However, the precise molecular mechanisms through which light regulates anthocyanin biosynthesis, particularly in non-model plant species, remain poorly understood. In this study, we discovered a CmBBX28-CmMYB9a molecular module that is responsive to light and regulates anthocyanin biosynthesis in chrysanthemums. Specifically, CmBBX28 interacts with CmMYB9a, interfering with its binding to the promoters of target genes and reducing the protein abundance of CmMYB9a. This interaction downregulates the transcription of CmMYB9a's downstream anthocyanin-associated genes, CmCHS, CmDFR, and CmUFGT. The expression of CmBBX28 was induced in the dark, and the accumulated CmBBX28 proteins interfered with the activation of CmMYB9a during anthocyanin biosynthesis. Concurrently, darkness also inhibited the expression of CmMYB9a to some extent. In contrast, light significantly induced the expression of CmMYB9a and suppressed the expression of CmBBX28, resulting in increased anthocyanin accumulation in chrysanthemum petals. Our findings reveal the mechanism by which light regulates anthocyanin biosynthesis in chrysanthemum flower petals.
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Claims 9
Claim · model-written summary
CmBBX28 interacts with CmMYB9a and interferes with CmMYB9a binding to target gene promoters.
- Taxon
- Chrysanthemum
.jpeg?width=60)
Chrysanthemumt0 - Gene
- CmBBX28e0
- Outcome
- binding to the promoters of target genese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“CmBBX28 interacts with CmMYB9a, interfering with its binding to the promoters of target genes”
t0“Chrysanthemum”
Claim · model-written summary
CmBBX28 interaction reduces CmMYB9a protein abundance.
- Taxon
- ChrysanthemumChrysanthemumt0
- Gene
- CmBBX28e0
- Outcome
- protein abundance of CmMYB9ae0
- Direction
- reducinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CmBBX28 interacts with CmMYB9a, interfering with its binding to the promoters of target genes and reducing the protein abundance of CmMYB9a”
t0“Chrysanthemum”
Claim · model-written summary
The CmBBX28-CmMYB9a interaction downregulates transcription of CmCHS, CmDFR and CmUFGT.
- Taxon
- ChrysanthemumChrysanthemumt0
- Gene
- CmCHS, CmDFR, and CmUFGTe0
- Outcome
- transcription of CmMYB9a's downstream anthocyanin-associated genese0
- Direction
- downregulatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This interaction downregulates the transcription of CmMYB9a's downstream anthocyanin-associated genes, CmCHS, CmDFR, and CmUFGT”
e1“CmBBX28 interacts with CmMYB9a”
t0“Chrysanthemum”
Claim · model-written summary
Darkness induced CmBBX28 expression.
- Taxon
- ChrysanthemumChrysanthemumt0
- Treatment
- darke0
- Gene
- CmBBX28e0
- Outcome
- expression of CmBBX28e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The expression of CmBBX28 was induced in the dark”
t0“Chrysanthemum”
Claim · model-written summary
Accumulated CmBBX28 proteins interfered with CmMYB9a activation during anthocyanin biosynthesis.
- Taxon
- ChrysanthemumChrysanthemumt0
- Gene
- CmBBX28e0
- Outcome
- activation of CmMYB9ae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulated CmBBX28 proteins interfered with the activation of CmMYB9a during anthocyanin biosynthesis”
t0“Chrysanthemum”
Claim · model-written summary
Darkness inhibited CmMYB9a expression to some extent.
- Taxon
- ChrysanthemumChrysanthemumt0
- Treatment
- darknesse0
- Gene
- CmMYB9ae0
- Outcome
- expression of CmMYB9ae0
- Direction
- inhibitede0
- Qualifier
- to some extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“darkness also inhibited the expression of CmMYB9a to some extent”
t0“Chrysanthemum”
Claim · model-written summary
Light significantly induced CmMYB9a expression.
- Taxon
- ChrysanthemumChrysanthemumt0
- Treatment
- lighte0
- Gene
- CmMYB9ae0
- Outcome
- expression of CmMYB9ae0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light significantly induced the expression of CmMYB9a”
t0“Chrysanthemum”
Claim · model-written summary
Light suppressed CmBBX28 expression.
- Taxon
- ChrysanthemumChrysanthemumt0
- Treatment
- lighte0
- Gene
- CmBBX28e0
- Outcome
- expression of CmBBX28e0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light significantly induced the expression of CmMYB9a and suppressed the expression of CmBBX28”
t0“Chrysanthemum”
Claim · model-written summary
Light increased anthocyanin accumulation in chrysanthemum petals.
- Taxon
- chrysanthemumChrysanthemume0
- Organ / stage
- petalse0
- Treatment
- lighte0
- Outcome
- anthocyanin accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“light significantly induced the expression of CmMYB9a and suppressed the expression of CmBBX28, resulting in increased anthocyanin accumulation in chrysanthemum petals”
The same questions in other papers
light · molecular: expression · ChrysanthemumPositive and negative results
3 in the opposite direction
- positive
- positive
- positive
light · quality: phytochemicals · ChrysanthemumResults agree
2 papers in the same direction as this paper
- 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.