Abstract
Far-red light and long photoperiods promote flowering in Arabidopsis. We report here that when 30-day-old vegetative plants were induced with a continuous light treatment enriched in far-red light, flowers developed directly from previously initiated primordia. Specifically, plants induced with our continuous incandescent-enriched (CI) treatment produced an average of two primary-axis nodes with a leaf/flower phenotype, indicating that approximately two leaf/paraclade primordia per plant produced an individual flower from tissue that typically would differentiate into a paraclade (secondary inflorescence). Assays for APETALA1::beta-glucuronidase activity during the CI photoinduction treatment indicated that the floral meristem identity gene APETALA1 was transcriptionally activated in primordia with a leaf/paraclade bias and in primordia committed to leaf/paraclade development. APETALA1::beta-glucuronidase activity levels were initially highest in young primordia but were not correlated strictly with primordium fate. These results indicate that primordium fate can be modified after primordium initiation and that developing primordia respond quantitatively to floral induction signals.
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Claims 7
Claim · model-written summary
Continuous far red enriched light induced flowers from prior primordia.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- continuous light treatment enriched in far-red lighte0
- Outcome
- flowers developed directly from previously initiated primordiae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when 30-day-old vegetative plants were induced with a continuous light treatment enriched in far-red light, flowers developed directly from previously initiated primordia.”
t0“Arabidopsis”
Claim · model-written summary
CI treatment produced an average of two leaf/flower nodes.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- continuous incandescent-enriched (CI) treatmente0
- Outcome
- primary-axis nodes with a leaf/flower phenotypee0
- Value
- twoe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants induced with our continuous incandescent-enriched (CI) treatment produced an average of two primary-axis nodes with a leaf/flower phenotype”
t0“Arabidopsis”
Claim · model-written summary
APETALA1 was activated in primordia with leaf/paraclade bias or commitment.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- primordiae0
- Gene
- APETALA1e0
- Outcome
- transcriptionally activatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the floral meristem identity gene APETALA1 was transcriptionally activated in primordia with a leaf/paraclade bias and in primordia committed to leaf/paraclade development.”
t0“Arabidopsis”
Claim · model-written summary
APETALA1 reporter activity was initially highest in young primordia.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- young primordiae0
- Gene
- APETALA1::beta-glucuronidasee0
- Outcome
- activity levelse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“APETALA1::beta-glucuronidase activity levels were initially highest in young primordia”
t0“Arabidopsis”
Claim · model-written summary
Reporter activity was not strictly correlated with primordium fate.
- Taxon
- ArabidopsisArabidopsist0
- Gene
- APETALA1e1
- Outcome
- primordium fatee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but were not correlated strictly with primordium fate.”
t0“Arabidopsis”
e1“the floral meristem identity gene APETALA1 was transcriptionally activated in primordia with a leaf/paraclade bias and in primordia committed to leaf/paraclade development.”
Claim · model-written summary
Authors infer primordium fate can change after initiation.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- primordiume0
- Outcome
- primordium fatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“primordium fate can be modified after primordium initiation”
t0“Arabidopsis”
Claim · model-written summary
Developing primordia respond quantitatively to floral induction.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- developing primordia respond quantitativelye0
- Qualifier
- floral induction signalse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“developing primordia respond quantitatively to floral induction signals.”
t0“Arabidopsis”
The same questions in other papers
light · phenology · ArabidopsisPositive and negative results
10 papers in the same direction as this paper · 5 in the opposite direction
- positive
- negative
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See all 16 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.