Abstract
The Arabidopsis (Arabidopsis thaliana) ethylene receptor Ethylene Response1 (ETR1) can mediate the receptor signal output via its carboxyl terminus interacting with the amino (N) terminus of Constitutive Triple Response1 (CTR1) or via its N terminus (etr1¹⁻³⁴⁹ or the dominant ethylene-insensitive etr1-1¹⁻³⁴⁹) by an unknown mechanism. Given that CTR1 is essential to ethylene receptor signaling and that overexpression of Reversion To Ethylene Sensitivity1 (RTE1) promotes ETR1 N-terminal signaling, we evaluated the roles of CTR1 and RTE1 in ETR1 N-terminal signaling. The mutant phenotype of ctr1-1 and ctr1-2 was suppressed in part by the transgenes etr1¹⁻³⁴⁹ and etr1-1¹⁻³⁴⁹, with etr1-1 conferring ethylene insensitivity. Coexpression of 35S:RTE1 and etr1¹⁻³⁴⁹ conferred ethylene insensitivity in ctr1-1, whereas suppression of the ctr1-1 phenotype by etr1¹⁻³⁴⁹ was prevented by rte1-2. Thus, RTE1 was essential to ETR1 N-terminal signaling independent of the CTR1 pathway. An excess amount of the CTR1 N terminus CTR1⁷⁻⁵⁶⁰ prevented ethylene receptor signaling, and the CTR1⁷⁻⁵⁶⁰ overexpressor CTR1-Nox showed a constitutive ethylene response phenotype. Expression of the ETR1 N terminus suppressed the CTR1-Nox phenotype. etr1¹⁻³⁴⁹ restored the ethylene insensitivity conferred by dominant receptor mutant alleles in the ctr1-1 background. Therefore, ETR1 N-terminal signaling was not mediated by full-length ethylene receptors; rather, full-length ethylene receptors acted cooperatively with the ETR1 N terminus to mediate the receptor signal independent of CTR1. ETR1 N-terminal signaling may involve RTE1, receptor cooperation, and negative regulation by the ETR1 carboxyl terminus.
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Claims 11
Claim · model-written summary
Transgenic etr1 1-349 and etr1-1 1-349 partly suppressed the mutant phenotype of ctr1-1 and ctr1-2.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Material
- ctr1-1 and ctr1-2e1
- Treatment
- transgenese1
- Outcome
- mutant phenotypee1
- Direction
- suppressede1
- Qualifier
- in parte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e1“The mutant phenotype of ctr1-1 and ctr1-2 was suppressed in part by the transgenes etr1¹⁻³⁴⁹ and etr1-1¹⁻³⁴⁹”
Claim · model-written summary
The etr1-1 transgene conferred ethylene insensitivity.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Gene
- etr1-1e2
- Outcome
- ethylene insensitivitye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e2“with etr1-1 conferring ethylene insensitivity”
Claim · model-written summary
Coexpression of 35S:RTE1 and the etr1 1-349 transgene conferred ethylene insensitivity in ctr1-1.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- ctr1-1e3
- Treatment
- Coexpression of 35S:RTE1e3
- Gene
- RTE1e3
- Outcome
- ethylene insensitivitye3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e3“Coexpression of 35S:RTE1 and etr1¹⁻³⁴⁹ conferred ethylene insensitivity in ctr1-1”
Claim · model-written summary
The rte1-2 mutation prevented suppression of the ctr1-1 phenotype by the ETR1 N-terminal transgene.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- rte1-2e4
- Gene
- rte1-2e4
- Outcome
- suppression of the ctr1-1 phenotypee4
- Direction
- preventede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e4“whereas suppression of the ctr1-1 phenotype by etr1¹⁻³⁴⁹ was prevented by rte1-2”
Claim · model-written summary
RTE1 is essential to ETR1 N-terminal signaling independent of the CTR1 pathway.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Gene
- RTE1e5
- Outcome
- ETR1 N-terminal signalinge5
- Qualifier
- independent of the CTR1 pathwaye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e5“RTE1 was essential to ETR1 N-terminal signaling independent of the CTR1 pathway”
Claim · model-written summary
An excess of the CTR1 N terminus prevented ethylene receptor signaling.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- An excess amount of the CTR1 N terminuse6
- Gene
- CTR1e6
- Outcome
- ethylene receptor signalinge6
- Direction
- preventede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e6“An excess amount of the CTR1 N terminus CTR1⁷⁻⁵⁶⁰ prevented ethylene receptor signaling”
Claim · model-written summary
The CTR1 N-terminal overexpressor CTR1-Nox showed a constitutive ethylene response phenotype.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- CTR1-Noxe7
- Outcome
- constitutive ethylene response phenotypee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e7“the CTR1⁷⁻⁵⁶⁰ overexpressor CTR1-Nox showed a constitutive ethylene response phenotype”
Claim · model-written summary
Expression of the ETR1 N terminus suppressed the CTR1-Nox phenotype.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Treatment
- Expression of the ETR1 N terminuse1
- Gene
- ETR1e1
- Outcome
- CTR1-Nox phenotypee1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e1“Expression of the ETR1 N terminus suppressed the CTR1-Nox phenotype”
Claim · model-written summary
The etr1 1-349 transgene restored the ethylene insensitivity conferred by dominant receptor alleles in the ctr1-1 background.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- ctr1-1 backgrounde1
- Treatment
- ETR1e1
- Outcome
- ethylene insensitivitye1
- Direction
- restorede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e1“etr1¹⁻³⁴⁹ restored the ethylene insensitivity conferred by dominant receptor mutant alleles in the ctr1-1 background”
Claim · model-written summary
ETR1 N-terminal signaling was not mediated by full-length ethylene receptors.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Gene
- ETR1e1
- Outcome
- ETR1 N-terminal signalinge1
- Qualifier
- not mediated by full-length ethylene receptorse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e1“ETR1 N-terminal signaling was not mediated by full-length ethylene receptors”
Claim · model-written summary
Full-length ethylene receptors act cooperatively with the ETR1 N terminus to mediate the receptor signal.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Outcome
- receptor signale2
- Qualifier
- acted cooperatively with the ETR1 N terminuse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Arabidopsis (Arabidopsis thaliana) ethylene receptor”
e2“full-length ethylene receptors acted cooperatively with the ETR1 N terminus to mediate the receptor signal”
The same questions in other papers
ethene · physiology: hormones · Arabidopsis thaliana (thale cress)Positive and negative results
4 in the opposite direction
- no effect
- negative
- negative
1 paper more in this group
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