“Functions of the type-B cytokinin response regulators in plant growth and development”

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Tuesday 28 May 2019, 11:00 - 12:30

 
ABSTRACT

Cytokinins regulate many aspects of plant growth and development, including cell proliferation, shoot and root architecture, seed yield, senescence, and stress responses. How a signaling molecule mediates such a diverse array of outputs and how these response pathways are integrated with other inputs remains a fundamental question in plant biology. The main focus of our studies is on the type-B response regulators (RRs), which mediate the primary transcriptional response to cytokinin. To this end, we have performed functional analyses on the type-B RRs in Arabidopsis and rice, results from these studies pointing to novel as well as conserved roles for type-B RRs in the growth and development of monocots as compared to dicots. We have also explored the type-B RR transcriptional network and mechanisms by which cytokinin interacts with auxin and ethylene to control root growth. Results from our analyses shed light on the physiological role of the type-B RRs in regulating the cytokinin response, the mechanism of type-B RR activation, and the basis by which cytokinin regulates diverse aspects of growth and development.

Location Jozef Schell Seminar Room
Contact Prof G. Eric Schaller
Department of Biological Sciences
Dartmouth College
USA