Abstract
This study was undertaken to document morphological and anatomical changes associated with hypanthium and style senescence of the Arachis hypogaea flower. At the time of female gametophyte maturity in the ovary, the hypanthium and enclosed style are ca. 1.2 cm long; 14-16 h later at anthesis, these reproductive structures have completed rapid growth and elongated ca. 2 cm more. Morphometric data show that 73% of the peg (gynophore) growth resulted from cell expansion and 27% from cell division. Significant shrinkage in the hypanthium, but not in the style, shortly after completion of rapid growth indicates the onset of senescence. An abscission zone was formed in the hypanthium 7-8 h post-anthesis while it appeared in the style between 1 and 2 days post-anthesis. Final abscission of the hypanthium occurred ca. 4 days post-anthesis and resulted from the initiation of peg elongation. The abscission zone of the style was complete 5 days post-anthesis. When excised reproductive axils were treated with CO2, a competitive inhibitor of ethylene, no difference in elongation rate was observed, compared with controls. The results are also discussed with respect to their physiological significance for Aspergillus flavus infection of the peanut ovary.
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Claims 9
Claim · model-written summary
Hypanthium shrinks significantly shortly after its rapid growth is complete.
- Taxon
- Arachis hypogaea
Arachis hypogaeae0 - Organ / stage
- hypanthiume3
- Outcome
- shrinkagee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e3“Significant shrinkage in the hypanthium, but not in the style, shortly after completion of rapid growth indicates the onset of senescence”
Claim · model-written summary
Style shows no significant shrinkage shortly after its rapid growth is complete.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- stylee3
- Outcome
- shrinkagee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e3“Significant shrinkage in the hypanthium, but not in the style, shortly after completion of rapid growth indicates the onset of senescence”
Claim · model-written summary
About 73% of peg growth results from cell expansion.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- peg (gynophore)e1
- Outcome
- growthe1
- Value
- 73%e1
- Qualifier
- resulted from cell expansione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e1“73% of the peg (gynophore) growth resulted from cell expansion”
Claim · model-written summary
About 27% of peg growth results from cell division.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- peg (gynophore)e1
- Outcome
- growthe1
- Value
- 27%e2
- Qualifier
- from cell divisione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e1“73% of the peg (gynophore) growth resulted from cell expansion”
e2“27% from cell division”
Claim · model-written summary
The hypanthium abscission zone forms 7-8 h post-anthesis.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- hypanthiume4
- Outcome
- abscission zonee4
- Value
- 7-8 h post-anthesise4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e4“An abscission zone was formed in the hypanthium 7-8 h post-anthesis while it appeared in the style between 1 and 2 days post-anthesis”
Claim · model-written summary
The style abscission zone appears 1-2 days post-anthesis.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- stylee4
- Outcome
- abscission zonee4
- Value
- 1 and 2 dayse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e4“An abscission zone was formed in the hypanthium 7-8 h post-anthesis while it appeared in the style between 1 and 2 days post-anthesis”
Claim · model-written summary
Final hypanthium abscission at about 4 days post-anthesis results from the initiation of peg elongation.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Outcome
- Final abscission of the hypanthiume5
- Value
- ca. 4 days post-anthesise5
- Qualifier
- resulted from the initiation of peg elongatione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e5“Final abscission of the hypanthium occurred ca. 4 days post-anthesis and resulted from the initiation of peg elongation”
Claim · model-written summary
The style abscission zone is complete 5 days post-anthesis.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- stylee6
- Outcome
- abscission zonee6
- Value
- 5 days post-anthesise6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e6“The abscission zone of the style was complete 5 days post-anthesis”
Claim · model-written summary
CO2, an ethylene inhibitor, shows no difference in elongation rate of excised reproductive axils compared with controls.
- Taxon
- Arachis hypogaeaArachis hypogaeae0
- Organ / stage
- excised reproductive axilse7
- Treatment
- CO2e7
- Outcome
- elongation ratee7
- Direction
- no differencee7
- Comparator
- controlse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“changes associated with hypanthium and style senescence of the Arachis hypogaea flower”
e7“When excised reproductive axils were treated with CO2, a competitive inhibitor of ethylene, no difference in elongation rate was observed, compared with controls”
The same questions in other papers
co2 · growth · Arachis hypogaea (peanut)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
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8 papers more in this group
See all 12 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.