Abstract
The development of cucumber (Cucumis sativus L.) corollas is accompanied by the accumulation of chromoplasts. In mature corollas, chromoplasts, but no chloroplasts, were detected by electron microscopy. Chlorophyll was also undetectable in corollas at anthesis. The contents of carotenoids and a carotenoid-associated, chromoplast-specific, 35-kD protein in corollas increased in parallel with flower development, peaking concomitantly at anthesis. The involvement of phytohormones and light in the regulation of their expression was studied. When gibberellin A3 (GA3) was added to an in vitro bud culture system, accumulation of both carotenoids and the 35-kD protein was markedly enhanced. The specific up-regulation of the 35-kD protein was very rapid: after only 2 h of culture, increased levels were detected in GA3-treated versus untreated corollas. During this period, corolla fresh weight and total protein and carotenoid contents remained unchanged. Inclusion of abscisic acid in the culture medium counteracted the effect of GA3. Accumulation of the 35-kD protein was also enhanced when flower buds on plants were sprayed with GA3 or etiolated.
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Claims 10
Claim · model-written summary
Chromoplasts accumulated during cucumber corolla development.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- corollase0
- Outcome
- accumulation of chromoplastse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of cucumber (Cucumis sativus L.) corollas is accompanied by the accumulation of chromoplasts”
Claim · model-written summary
Mature corollas contained chromoplasts but no chloroplasts.
- Taxon
- Cucumis sativusCucumis sativust0
- Organ / stage
- mature corollase0
- Outcome
- chromoplasts, but no chloroplastse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In mature corollas, chromoplasts, but no chloroplasts, were detected by electron microscopy”
t0“Cucumis sativus”
Claim · model-written summary
Chlorophyll was undetectable at anthesis.
- Taxon
- Cucumis sativusCucumis sativust0
- Organ / stage
- corollas at anthesise0
- Outcome
- Chlorophylle0
- Direction
- undetectablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll was also undetectable in corollas at anthesis”
t0“Cucumis sativus”
Claim · model-written summary
Corolla carotenoid and 35-kD protein contents increased during flower development and peaked at anthesis.
- Taxon
- Cucumis sativusCucumis sativust0
- Organ / stage
- corollase0
- Gene
- 35-kD proteine0
- Outcome
- contents of carotenoids and a carotenoid-associated, chromoplast-specific, 35-kD proteine0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of carotenoids and a carotenoid-associated, chromoplast-specific, 35-kD protein in corollas increased in parallel with flower development, peaking concomitantly at anthesis”
t0“Cucumis sativus”
Claim · model-written summary
GA3 enhanced carotenoid accumulation in cultured buds.
- Taxon
- Cucumis sativusCucumis sativust0
- Treatment
- gibberellin A3 (GA3)e0
- Outcome
- accumulation of both carotenoids and the 35-kD proteine0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When gibberellin A3 (GA3) was added to an in vitro bud culture system, accumulation of both carotenoids and the 35-kD protein was markedly enhanced”
t0“Cucumis sativus”
Claim · model-written summary
GA3 increased 35-kD protein levels within 2 h versus untreated corollas.
- Taxon
- Cucumis sativusCucumis sativust0
- Treatment
- GA3-treatede0
- Outcome
- levelse0
- Direction
- increasede0
- Qualifier
- after only 2 h of culturee0
- Comparator
- untreated corollase0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after only 2 h of culture, increased levels were detected in GA3-treated versus untreated corollas”
t0“Cucumis sativus”
Claim · model-written summary
Corolla fresh weight, total protein, and carotenoid contents remained unchanged during the first 2 h.
- Taxon
- Cucumis sativusCucumis sativust0
- Outcome
- corolla fresh weight and total protein and carotenoid contentse0
- Direction
- remained unchangede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During this period, corolla fresh weight and total protein and carotenoid contents remained unchanged”
t0“Cucumis sativus”
Claim · model-written summary
Abscisic acid counteracted the GA3 effect.
- Taxon
- Cucumis sativusCucumis sativust0
- Treatment
- abscisic acide0
- Outcome
- effect of GA3e0
- Direction
- counteractede0
- Comparator
- GA3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inclusion of abscisic acid in the culture medium counteracted the effect of GA3”
t0“Cucumis sativus”
Claim · model-written summary
Spraying buds with GA3 enhanced 35-kD protein accumulation.
- Taxon
- Cucumis sativusCucumis sativust0
- Treatment
- sprayed with GA3e0
- Outcome
- Accumulation of the 35-kD proteine0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accumulation of the 35-kD protein was also enhanced when flower buds on plants were sprayed with GA3”
t0“Cucumis sativus”
Claim · model-written summary
Etiolation enhanced 35-kD protein accumulation.
- Taxon
- Cucumis sativusCucumis sativust0
- Treatment
- etiolatede0
- Outcome
- Accumulation of the 35-kD proteine0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accumulation of the 35-kD protein was also enhanced when flower buds on plants were sprayed with GA3 or etiolated”
t0“Cucumis sativus”
The same questions in other papers
Gibberellic acid · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
application · quality: protein · Cucumis sativus (cucumber)Positive and negative results
1 in the opposite direction
- no effect
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.