Abstract
We investigated the temporal and spatial changes in cell division, endoreduplication and expression of cell cycle-related genes in developing cucumber fruits at 0-20 days after anthesis (DAA). Cell division was intense at 0-4 DAA and then decreased until to 8 DAA. Meanwhile, endoreduplication started at 4 DAA and increased gradually to 20 DAA, accompanied by an increase in fruit weight. Cell division was mainly observed in the exocarp, while endoreduplication occurred mostly in the endocarp and pulp. Among the six cell cycle-related genes examined, two mitotic cyclin genes (CycA and CycB) and CDKB had the highest transcript levels within 2 DAA, while transcripts of two CycD3 genes and CDKA peaked at 4 DAA and 20 DAA, respectively. Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR) all induced parthenocarpic growth as well as active cell division, and enhanced transcripts of cell cycle-related genes. In comparison, gibberellic acid (GA(3)) had little effect on the induction of parthenocarpy and transcripts of cell cycle-related genes. These results provide evidence for the important roles of cell division and endoreduplication during cucumber fruit development, and suggest the essential roles of cell cycle-related genes and plant growth substances in fruit development.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Cucumber fruit cell division was intense at 0-4 DAA and declined by 8 DAA.
- Taxon
- cucumber
Cucumis sativust0 - Outcome
- Cell divisione0
- Direction
- decreasede0
- Qualifier
- 0-4 DAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cell division was intense at 0-4 DAA and then decreased until to 8 DAA”
t0“cucumber”
Claim · model-written summary
Endoreduplication began at 4 DAA and increased through 20 DAA.
- Taxon
- cucumberCucumis sativust0
- Outcome
- endoreduplicatione0
- Direction
- increasede0
- Qualifier
- 4 DAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endoreduplication started at 4 DAA and increased gradually to 20 DAA”
t0“cucumber”
Claim · model-written summary
Fruit weight increased alongside endoreduplication.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- fruite0
- Outcome
- fruit weighte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“accompanied by an increase in fruit weight”
e1“endoreduplication started at 4 DAA and increased gradually to 20 DAA”
t0“cucumber”
Claim · model-written summary
Cell division occurred mainly in the exocarp.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- exocarpe0
- Outcome
- Cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cell division was mainly observed in the exocarp”
t0“cucumber”
Claim · model-written summary
Endoreduplication occurred mostly in endocarp and pulp.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- endocarp and pulpe0
- Outcome
- endoreduplicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endoreduplication occurred mostly in the endocarp and pulp”
t0“cucumber”
Claim · model-written summary
CycA, CycB and CDKB transcripts peaked within 2 DAA.
- Taxon
- cucumberCucumis sativust0
- Gene
- CycA and CycBe0
- Outcome
- highest transcript levelse0
- Qualifier
- within 2 DAAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CycA and CycB) and CDKB had the highest transcript levels within 2 DAA”
t0“cucumber”
Claim · model-written summary
Two CycD3 transcript levels peaked at 4 DAA.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transcripts of two CycD3 genes and CDKA peaked at 4 DAA and 20 DAA, respectively”
t0“cucumber”
Claim · model-written summary
CDKA transcript levels peaked at 20 DAA.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transcripts of two CycD3 genes and CDKA peaked at 4 DAA and 20 DAA, respectively”
t0“cucumber”
Claim · model-written summary
Naphthaleneacetic acid induced parthenocarpic growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Naphthaleneacetic acide0
- Outcome
- parthenocarpic growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR) all induced parthenocarpic growth as well as active cell division, and enhanced transcripts of cell cycle-related genes”
t0“cucumber”
Claim · model-written summary
N-(2-chloro-4-pyridyl)-N'-phenylurea induced parthenocarpic growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- N-(2-chloro-4-pyridyl)-N'-phenylureae0
- Outcome
- parthenocarpic growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR) all induced parthenocarpic growth as well as active cell division, and enhanced transcripts of cell cycle-related genes”
t0“cucumber”
Claim · model-written summary
24-epibrassinolide induced parthenocarpic growth.
- Taxon
- cucumberCucumis sativust0
- Treatment
- 24-epibrassinolidee0
- Outcome
- parthenocarpic growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR) all induced parthenocarpic growth as well as active cell division, and enhanced transcripts of cell cycle-related genes”
t0“cucumber”
Claim · model-written summary
NAA, CPPU and EBR induced active cell division.
- Taxon
- cucumberCucumis sativust0
- Treatment
- NAAe1
- Outcome
- active cell divisione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all induced parthenocarpic growth as well as active cell division, and enhanced transcripts of cell cycle-related genes”
e1“Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR)”
t0“cucumber”
Claim · model-written summary
Growth substances enhanced cell cycle transcripts.
- Taxon
- cucumberCucumis sativust0
- Treatment
- NAAe1
- Outcome
- transcripts of cell cycle-related genese0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced transcripts of cell cycle-related genes”
e1“Naphthaleneacetic acid (NAA), N-(2-chloro-4-pyridyl)-N'-phenylurea (CPPU) and 24-epibrassinolide (EBR)”
t0“cucumber”
Claim · model-written summary
GA(3) had little effect on parthenocarpy induction.
- Taxon
- cucumberCucumis sativust0
- Treatment
- gibberellic acide0
- Outcome
- induction of parthenocarpye0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellic acid (GA(3)) had little effect on the induction of parthenocarpy and transcripts of cell cycle-related genes”
t0“cucumber”
Claim · model-written summary
GA(3) had little effect on cell cycle transcripts.
- Taxon
- cucumberCucumis sativust0
- Treatment
- gibberellic acide0
- Outcome
- transcripts of cell cycle-related genese0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellic acid (GA(3)) had little effect on the induction of parthenocarpy and transcripts of cell cycle-related genes”
t0“cucumber”
The same questions in other papers
1-naphthaleneacetic acid · growth · Cucumis sativus (cucumber)Results differ
14 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
14 papers more in this group
See all 18 papers →1-naphthaleneacetic acid · molecular: expression · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
Gibberellic acid · molecular: expression · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →24-epi-brassinolide · growth · Cucumis sativus (cucumber)Results agree
16 papers in the same direction as this paper
- positive
- positive
- positive
13 papers more in this group
See all 17 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.