Abstract
Ethylene production, as well as the expression of ethylene biosynthetic (Rh-ACS1-4 and Rh-ACO1) and receptor (Rh-ETR1-5) genes, was determined in five different floral tissues (sepals, petals, stamens, gynoecia, and receptacles) of cut rose (Rosa hybrida cv. Samantha upon treatment with ethylene or the ethylene inhibitor 1-methylcyclopropene (1-MCP). Ethylene-enhanced ethylene production occurred only in gynoecia, petals, and receptacles, with gynoecia showing the greatest enhancement in the early stage of ethylene treatment. However, 1-MCP did not suppress ethylene production in these three tissues. In sepals, ethylene production was highly decreased by ethylene treatment, and increased dramatically by 1-MCP. Ethylene production in stamens remained unchanged after ethylene or 1-MCP treatment. Induction of certain ethylene biosynthetic genes by ethylene in different floral tissues was positively correlated with the ethylene production, and this induction was also not suppressed by 1-MCP. The expression of Rh-ACS2 and Rh-ACS3 was quickly induced by ethylene in gynoecia, but neither Rh-ACS1 nor Rh-ACS4 was induced by ethylene in any of the five tissues. In addition, Rh-ACO1 was induced by ethylene in all floral tissues except sepals. The induced expression of ethylene receptor genes by ethylene was much faster in gynoecia than in petals, and the expression of Rh-ETR3 was strongly suppressed by 1-MCP in all floral tissues. These results indicate that ethylene biosynthesis in gynoecia is regulated developmentally, rather than autocatalytically. The response of rose flowers to ethylene occurs initially in gynoecia, and ethylene may regulate flower opening mainly through the Rh-ETR3 gene in gynoecia.
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Claims 18
Claim · model-written summary
Ethylene treatment enhanced ethylene production in rose gynoecia, petals, and receptacles, most in gynoecia early in treatment.
- Taxon
- roset0
- Organ / stage
- gynoecia, petals, and receptaclese0
- Treatment
- ethylene treatmente0
- Outcome
- ethylene productione0
- Direction
- enhancemente0
- Qualifier
- early stage of ethylene treatmente0
Not reportedComparator
Verbatim
t0“rose”
e0“Ethylene-enhanced ethylene production occurred only in gynoecia, petals, and receptacles, with gynoecia showing the greatest enhancement in the early stage of ethylene treatment.”
Claim · model-written summary
1-MCP did not suppress ethylene production in rose gynoecia, petals, and receptacles.
- Taxon
- roset0
- Organ / stage
- these three tissuese0
- Treatment
- 1-MCPe0
- Outcome
- ethylene productione0
- Direction
- did not suppresse0
Not reportedComparator
Verbatim
t0“rose”
e0“However, 1-MCP did not suppress ethylene production in these three tissues.”
Claim · model-written summary
Ethylene treatment decreased ethylene production in rose sepals.
- Taxon
- roset0
- Organ / stage
- sepalse0
- Treatment
- ethylene treatmente0
- Outcome
- ethylene productione0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“rose”
e0“In sepals, ethylene production was highly decreased by ethylene treatment, and increased dramatically by 1-MCP.”
Claim · model-written summary
1-MCP dramatically increased ethylene production in rose sepals.
Not reportedComparator
Verbatim
t0“rose”
e0“In sepals, ethylene production was highly decreased by ethylene treatment, and increased dramatically by 1-MCP.”
Claim · model-written summary
Ethylene production in rose stamens remained unchanged after ethylene treatment.
- Taxon
- roset0
- Organ / stage
- stamense0
- Treatment
- ethylenee0
- Outcome
- Ethylene productione0
- Direction
- remained unchangede0
Not reportedComparator
Verbatim
t0“rose”
e0“Ethylene production in stamens remained unchanged after ethylene or 1-MCP treatment.”
Claim · model-written summary
Ethylene production in rose stamens remained unchanged after 1-MCP treatment.
- Taxon
- roset0
- Organ / stage
- stamense0
- Treatment
- 1-MCPe0
- Outcome
- Ethylene productione0
- Direction
- remained unchangede0
Not reportedComparator
Verbatim
t0“rose”
e0“Ethylene production in stamens remained unchanged after ethylene or 1-MCP treatment.”
Claim · model-written summary
Induction of ethylene biosynthetic genes correlated positively with ethylene production in floral tissues.
Verbatim
t0“rose”
e0“Induction of certain ethylene biosynthetic genes by ethylene in different floral tissues was positively correlated with the ethylene production”
Claim · model-written summary
1-MCP did not suppress ethylene induction of certain biosynthetic genes.
Not reportedComparator
Verbatim
t0“rose”
e0“this induction was also not suppressed by 1-MCP.”
Claim · model-written summary
Ethylene quickly induced Rh-ACS2 expression in gynoecia.
- Taxon
- roset0
- Organ / stage
- gynoeciae0
- Treatment
- ethylenee0
- Gene
- Rh-ACS2e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Verbatim
t0“rose”
e0“The expression of Rh-ACS2 and Rh-ACS3 was quickly induced by ethylene in gynoecia”
Claim · model-written summary
Ethylene quickly induced Rh-ACS3 expression in gynoecia.
- Taxon
- roset0
- Organ / stage
- gynoeciae0
- Treatment
- ethylenee0
- Gene
- Rh-ACS3e0
- Outcome
- expressione0
- Direction
- inducede0
Not reportedComparator
Verbatim
t0“rose”
e0“The expression of Rh-ACS2 and Rh-ACS3 was quickly induced by ethylene in gynoecia”
Claim · model-written summary
Ethylene did not induce Rh-ACS1 in any of five floral tissues.
Not reportedComparator
Verbatim
t0“rose”
e0“neither Rh-ACS1 nor Rh-ACS4 was induced by ethylene in any of the five tissues.”
Claim · model-written summary
Ethylene did not induce Rh-ACS4 in any of five floral tissues.
Not reportedComparator
Verbatim
t0“rose”
e0“neither Rh-ACS1 nor Rh-ACS4 was induced by ethylene in any of the five tissues.”
Claim · model-written summary
Ethylene induced Rh-ACO1 in all floral tissues except sepals.
- Taxon
- roset0
- Organ / stage
- all floral tissues except sepalse0
- Treatment
- ethylenee0
- Gene
- Rh-ACO1e0
- Outcome
- Rh-ACO1e0
- Direction
- inducede0
Not reportedComparator
Verbatim
t0“rose”
e0“Rh-ACO1 was induced by ethylene in all floral tissues except sepals.”
Claim · model-written summary
Ethylene induced ethylene receptor gene expression faster in gynoecia than petals.
Verbatim
t0“rose”
e0“The induced expression of ethylene receptor genes by ethylene was much faster in gynoecia than in petals”
Claim · model-written summary
1-MCP strongly suppressed Rh-ETR3 expression in all rose floral tissues.
- Taxon
- roset0
- Organ / stage
- all floral tissuese0
- Treatment
- 1-MCPe0
- Gene
- Rh-ETR3e0
- Outcome
- expressione0
- Direction
- suppressede0
Not reportedComparator
Verbatim
t0“rose”
e0“the expression of Rh-ETR3 was strongly suppressed by 1-MCP in all floral tissues.”
Claim · model-written summary
The authors interpret ethylene biosynthesis in gynoecia as developmentally regulated.
Verbatim
t0“rose”
e0“ethylene biosynthesis in gynoecia is regulated developmentally, rather than autocatalytically.”
Claim · model-written summary
The response of rose flowers to ethylene occurs first in gynoecia.
Verbatim
t0“rose”
e0“The response of rose flowers to ethylene occurs initially in gynoecia”
Claim · model-written summary
The authors propose that ethylene may regulate rose flower opening mainly through Rh-ETR3 in gynoecia.
Verbatim
t0“rose”
e0“ethylene may regulate flower opening mainly through the Rh-ETR3 gene in gynoecia.”
The same questions in other papers
ethene · physiology: hormones · RosaPositive and negative results
1 in the opposite direction
- no effect
1-methylcyclopropene · physiology: hormones · RosaPositive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 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.