Title : ENHANCING ctr1-10 ETHYLENE RESPONSE2 is a novel allele involved in CONSTITUTIVE TRIPLE-RESPONSE1-mediated ethylene receptor signaling in Arabidopsis.

Pub. Date : 2014 Feb 15

PMID : 24529183






9 Functional Relationships(s)
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1 ENHANCING ctr1-10 ETHYLENE RESPONSE2 is a novel allele involved in CONSTITUTIVE TRIPLE-RESPONSE1-mediated ethylene receptor signaling in Arabidopsis. ethylene Protein kinase superfamily protein Arabidopsis thaliana
2 BACKGROUND: The signal output of ethylene receptor family members is mediated by unknown mechanisms to activate the Raf-like protein CONSTITUTIVE TRIPLE RESPONSE1 (CTR1) in negatively regulating ethylene signaling. ethylene Protein kinase superfamily protein Arabidopsis thaliana
3 To advance our knowledge of the involvement of CTR1-mediated ethylene receptor signaling, we performed a genetic screen for mutations that enhanced the constitutive ethylene response in the weak ctr1-10 allele. ethylene Protein kinase superfamily protein Arabidopsis thaliana
4 To advance our knowledge of the involvement of CTR1-mediated ethylene receptor signaling, we performed a genetic screen for mutations that enhanced the constitutive ethylene response in the weak ctr1-10 allele. ethylene Protein kinase superfamily protein Arabidopsis thaliana
5 RESULTS: We isolated a loss-of-function allele of ENHANCING ctr1-10 ETHYLENE RESPONSE2 (ECR2) and found that ecr2-1 ctr1-10 and the strong allele ctr1-1 conferred a similar, typical constitutive ethylene response phenotype. ethylene Protein kinase superfamily protein Arabidopsis thaliana
6 RESULTS: We isolated a loss-of-function allele of ENHANCING ctr1-10 ETHYLENE RESPONSE2 (ECR2) and found that ecr2-1 ctr1-10 and the strong allele ctr1-1 conferred a similar, typical constitutive ethylene response phenotype. ethylene Protein kinase superfamily protein Arabidopsis thaliana
7 Expression of the N terminus of the ethylene-insensitive etr1-1 but not the full-length isoform rescued the ecr2-1 ctr1-10 phenotype, which indicates the involvement of ECR2 in CTR1-mediated but not -independent, ethylene receptor signaling. ethylene Protein kinase superfamily protein Arabidopsis thaliana
8 Expression of the N terminus of the ethylene-insensitive etr1-1 but not the full-length isoform rescued the ecr2-1 ctr1-10 phenotype, which indicates the involvement of ECR2 in CTR1-mediated but not -independent, ethylene receptor signaling. ethylene Protein kinase superfamily protein Arabidopsis thaliana
9 CTR1 activation by ethylene receptors may require ECR2 for suppressing the ethylene response. ethylene Protein kinase superfamily protein Arabidopsis thaliana