Abstract
Abstract Rose ( Rosa hybrida ) plants are major ornamental species worldwide, and their commercial value greatly depends on their open flowers, as both the quality of fully open petals and long vase life are important. Petal senescence can be started and accelerated by various hormone signals, and ethylene is considered an accelerator of petal senescence in rose. To date, however, the underlying mechanism of signaling crosstalk between ethylene and other hormones such as JA in petal senescence remains largely unknown. Here, we isolated RhMYB108 , an R2R3-MYB transcription factor, which is highly expressed in senescing petals as well as in petals treated with exogenous ethylene and JA. Applications of exogenous ethylene and JA markedly accelerated petal senescence, while the process was delayed in response to applications of 1-MCP, an ethylene action inhibitor. In addition, silencing of RhMYB108 alter the expression of SAGs such as RhNAC029 , RhNAC053 , RhNAC092 , RhSAG12 , and RhSAG113 , and finally block ethylene- and JA-induced petal senescence. Furthermore, RhMYB108 was identified to target the promoters of RhNAC053 , RhNAC092 , and RhSAG113 . Our results reveal a model in which RhMYB108 functions as a receptor of ethylene and JA signals to modulate the onset of petal senescence by targeting and enhancing senescence-associated gene expression.
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Claims 10
Claim · model-written summary
RhMYB108 was highly expressed in senescing rose petals.
Verbatim
e0“RhMYB108 , an R2R3-MYB transcription factor, which is highly expressed in senescing petals”
t0“rose plants”
Claim · model-written summary
Ethylene treatment was associated with high RhMYB108 expression in rose petals.
- Taxon
- rose plantst0
- Organ / stage
- petalse0
- Treatment
- exogenous ethylenee0
- Gene
- RhMYB108t0
- Outcome
- highly expressede0
- Direction
- highlye0
Not reportedComparator
Verbatim
e0“highly expressed in senescing petals as well as in petals treated with exogenous ethylene and JA”
t0“RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants”
Claim · model-written summary
JA treatment was associated with high RhMYB108 expression in rose petals.
- Taxon
- rose plantst0
- Organ / stage
- petalse0
- Treatment
- JAe0
- Gene
- RhMYB108t0
- Outcome
- highly expressede0
- Direction
- highlye0
Not reportedComparator
Verbatim
e0“highly expressed in senescing petals as well as in petals treated with exogenous ethylene and JA”
t0“RhMYB108, an R2R3-MYB transcription factor, is involved in ethylene- and JA-induced petal senescence in rose plants”
Claim · model-written summary
Exogenous ethylene markedly accelerated rose petal senescence.
Not reportedComparator
Verbatim
e0“Applications of exogenous ethylene and JA markedly accelerated petal senescence”
t0“rose plants”
Claim · model-written summary
Exogenous JA markedly accelerated rose petal senescence.
Not reportedComparator
Verbatim
e0“Applications of exogenous ethylene and JA markedly accelerated petal senescence”
t0“rose plants”
Claim · model-written summary
1-MCP delayed rose petal senescence.
Not reportedComparator
Verbatim
e0“the process was delayed in response to applications of 1-MCP, an ethylene action inhibitor”
t0“rose plants”
Claim · model-written summary
Silencing RhMYB108 altered senescence-associated gene expression.
- Taxon
- rose plantst0
- Treatment
- silencing of RhMYB108e0
- Gene
- RhMYB108e0
- Outcome
- expression of SAGse0
- Direction
- altere0
Not reportedComparator
Verbatim
e0“silencing of RhMYB108 alter the expression of SAGs such as RhNAC029 , RhNAC053 , RhNAC092 , RhSAG12 , and RhSAG113”
t0“rose plants”
Claim · model-written summary
Silencing RhMYB108 blocked ethylene-induced petal senescence.
- Taxon
- rose plantst0
- Treatment
- silencing of RhMYB108e0
- Gene
- RhMYB108e0
- Outcome
- ethylene- and JA-induced petal senescencee0
- Direction
- blocke0
Not reportedComparator
Verbatim
e0“silencing of RhMYB108 alter the expression of SAGs such as RhNAC029 , RhNAC053 , RhNAC092 , RhSAG12 , and RhSAG113 , and finally block ethylene- and JA-induced petal senescence”
t0“rose plants”
Claim · model-written summary
RhMYB108 targeted the promoters of RhNAC053, RhNAC092, and RhSAG113.
Not reportedDirection
Verbatim
e0“RhMYB108 was identified to target the promoters of RhNAC053 , RhNAC092 , and RhSAG113”
t0“rose plants”
Claim · model-written summary
The authors propose that RhMYB108 transduces ethylene and JA signals to advance petal senescence through enhanced senescence-associated gene expression.
Verbatim
e0“RhMYB108 functions as a receptor of ethylene and JA signals to modulate the onset of petal senescence by targeting and enhancing senescence-associated gene expression”
t0“rose plants”
The same questions in other papers
ethene · quality: postharvest · RosaResults differ
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- positive
- negative
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See all 9 papers →loss of function · physiology: hormones · RosaPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.