Abstract
Abstract Polyamines have been shown to stimulate fruit set and the initial phase of fruit development in several crops. The effect of exogenous application of putrescine on ovary development and seed set of cotton under high temperature stress was investigated under controlled environmental conditions. Putrescine was applied to floral buds of cotton, 24 h prior to anthesis, and caused a significant increase in putrescine content of cotton ovaries collected at anthesis compared with the control treatment. However, there was no increase in spermidine and spermine. High temperature (38 °C) significantly decreased the spermidine content of cotton ovaries in both years of the study compared with the untreated control (30 °C). Spermine was significantly decreased in the high temperature treatment the first year of the study; however, this result was not consistent for the second year. Ovarian putrescine concentration was not affected by the high temperature treatment. Increased temperatures in this study decreased seed set in cotton flowers; however, exogenous application of putrescine ameliorated the negative effect of high temperature on seed set, as expressed by the number of seeds per cotton boll. This was evident in both years of the study. Exogenous application of Putrescine increased the level of putrescine in cotton flowers, which was associated with increased seed set despite the negative effect of increased temperature.
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Claims 7
Claim · model-written summary
Applied putrescine increased putrescine content in cotton ovaries at anthesis.
- Taxon
- cotton
Gossypium hirsutume0 - Organ / stage
- ovaries collected at anthesise0
- Treatment
- Putrescinee0
- Outcome
- putrescine content of cotton ovariese0
- Direction
- increasee0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Putrescine was applied to floral buds of cotton, 24 h prior to anthesis, and caused a significant increase in putrescine content of cotton ovaries collected at anthesis compared with the control treatment”
Claim · model-written summary
Putrescine application did not increase spermidine or spermine.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Putrescinee0
- Outcome
- spermidine and sperminee0
- Direction
- no increasee0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Putrescine was applied to floral buds of cotton, 24 h prior to anthesis, and caused a significant increase in putrescine content of cotton ovaries collected at anthesis compared with the control treatment. However, there was no increase in spermidine and spermine”
Claim · model-written summary
High temperature lowered spermidine content in cotton ovaries in both years.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- High temperature (38 °C)e0
- Outcome
- spermidine content of cotton ovariese0
- Direction
- decreasede0
- Qualifier
- both years of the studye0
- Comparator
- untreated control (30 °C)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High temperature (38 °C) significantly decreased the spermidine content of cotton ovaries in both years of the study compared with the untreated control (30 °C)”
Claim · model-written summary
High temperature decreased spermine in the first year, with a different result in the second.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- high temperature treatmente0
- Outcome
- Sperminee0
- Direction
- decreasede0
- Qualifier
- the first year of the studye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spermine was significantly decreased in the high temperature treatment the first year of the study; however, this result was not consistent for the second year”
e1“putrescine content of cotton ovaries collected at anthesis”
Claim · model-written summary
High temperature did not affect ovarian putrescine concentration.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- high temperature treatmente0
- Outcome
- Ovarian putrescine concentratione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ovarian putrescine concentration was not affected by the high temperature treatment”
e1“putrescine content of cotton ovaries collected at anthesis”
Claim · model-written summary
Higher temperatures decreased seed set in cotton flowers.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Increased temperaturese0
- Outcome
- seed set in cotton flowerse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased temperatures in this study decreased seed set in cotton flowers”
Claim · model-written summary
Applied putrescine ameliorated heat-related seed-set loss in both years.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- exogenous application of putrescinee0
- Outcome
- number of seeds per cotton bolle0
- Direction
- amelioratede0
- Qualifier
- both years of the studye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of putrescine ameliorated the negative effect of high temperature on seed set, as expressed by the number of seeds per cotton boll. This was evident in both years of the study”
The same questions in other papers
putrescine · molecular: metabolites · Gossypium hirsutum (cotton)Results agree
1 paper in the same direction as this paper
- positive
putrescine · yield · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
heat · molecular: metabolites · Gossypium hirsutum (cotton)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 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.