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Functional Characterization Of Type-B Response Regulators In The Arabidopsis Cytokinin Response, Kristine Hill, Dennis E. Mathews, Hyo Jung Kim, Ian H. Street, Sarah L. Wildes, Yi-Hsuan Chiang, Michael G. Mason, Jose M. Alonso, Joseph R. Ecker, Joseph K. Kieber, G. Eric Schaller
Functional Characterization Of Type-B Response Regulators In The Arabidopsis Cytokinin Response, Kristine Hill, Dennis E. Mathews, Hyo Jung Kim, Ian H. Street, Sarah L. Wildes, Yi-Hsuan Chiang, Michael G. Mason, Jose M. Alonso, Joseph R. Ecker, Joseph K. Kieber, G. Eric Schaller
Dartmouth Scholarship
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 two members. Cytokinin responses are predominantly mediated by subfamily 1 members, with cytokinin-mediated effects on root growth and root meristem size correlating with type-B ARR expression levels. To determine which type-B ARRs can functionally substitute for the subfamily 1 members ARR1 or ARR12, we …