Functional Characterization of Type-B Response Regulators in the Arabidopsis Cytokinin Response
نویسندگان
چکیده
منابع مشابه
Functional characterization of type-B response regulators in the Arabidopsis cytokinin response.
Cytokinins play critical roles in plant growth and development, with the transcriptional response to cytokinin being mediated by the type-B response regulators. In Arabidopsis (Arabidopsis thaliana), type-B response regulators (ARABIDOPSIS RESPONSE REGULATORS [ARRs]) form three subfamilies based on phylogenic analysis, with subfamily 1 having seven members and subfamilies 2 and 3 each having tw...
متن کاملType B response regulators of Arabidopsis play key roles in cytokinin signaling and plant development.
The type B Arabidopsis Response Regulators (ARRs) of Arabidopsis thaliana are transcription factors that act as positive regulators in the two-component cytokinin signaling pathway. We employed a mutant-based approach to perform a detailed characterization of the roles of ARR1, ARR10, and ARR12 in plant growth and development. The most pronounced phenotype was found in the arr1-3 arr10-5 arr12-...
متن کاملMultiple type-B response regulators mediate cytokinin signal transduction in Arabidopsis.
Type-B Arabidopsis thaliana response regulators (ARRs) are transcription factors that function in the final step of two-component signaling systems. To characterize their role in plant growth and development, we isolated T-DNA insertions within six of the genes (ARR1, ARR2, ARR10, ARR11, ARR12, and ARR18) from the largest subfamily of type-B ARRs and also constructed various double and triple c...
متن کاملType-A Arabidopsis response regulators are partially redundant negative regulators of cytokinin signaling.
Type-A Arabidopsis (Arabidopsis thaliana) response regulators (ARRs) are a family of 10 genes that are rapidly induced by cytokinin and are highly similar to bacterial two-component response regulators. We have isolated T-DNA insertions in six of the type-A ARRs and constructed multiple insertional mutants, including the arr3,4,5,6,8,9 hextuple mutant. Single arr mutants were indistinguishable ...
متن کاملType-B response regulators display overlapping expression patterns in Arabidopsis.
Two-component signaling systems, involving His kinases, His-containing phosphotransfer proteins, and response regulators, have been implicated in plant responses to hormones and environmental factors. Genomic analysis of Arabidopsis supports the existence of 22 response regulators (ARRs) that can be divided into at least two distinct groups designated type-A and type-B. Phylogenetic analysis in...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2013
ISSN: 1532-2548
DOI: 10.1104/pp.112.208736