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Indiana University Bloomington

Department of Biology

Lectures & Seminars

Carlos O. Miller Lecture Series

about the lecture series | upcoming lecture | past lectures

About the Lecture Series  (top)

The Miller lectures honor Emeritus Professor Carlos Miller, who had a longstanding interest in the mechanisms of plant growth and development.

Mark Estelle, now at UC San Diego, was the first Miller Chair of Plant Developmental Biology. He established the lecture series in 2004 to honor Carlos Miller and his contributions to our department and the scientific community. Craig Pikaard, our second Miller Chair, joined the IU faculty in 2009, coming to us from Washington University in St. Louis.

Upcoming Lecture   (top)

Mark Estelle

Mark Estelle | Courtesy photo

Mark Estelle
Distinguished Professor, Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego

Auxin signaling from moss to mouse ear cress

Thursday, September 29, 2016
4:00 p.m., Myers Hall 130

Abstract: Auxin controls growth and diverse physiological processes through a complex gene regulatory network that includes thousands of genes. Auxin regulates gene expression by promoting the degradation of transcriptional repressors called Aux/IAA proteins. The Aux/IAAs repress transcription by interacting with AUXIN RESPONSE FACTOR (ARF) transcription factors and recruiting members of the TOPLESS (TPL) family of co-repressors to the chromatin. The 29 Aux/IAA genes in Arabidopsis exhibit unique but partially overlapping patterns of expression. Although some studies have suggested that individual Aux/IAA genes have specialized function, genetic analyses of the family have been limited by the lack of loss-of-function phenotypes, presumably because of overlapping function. Further, with a few exceptions, our knowledge of the factors that regulate Aux/IAA expression is limited. We have used two model systems, the moss Physcomitrella patens and Arabidopsis thaliana to explore the function of the Aux/IAA proteins. Our results indicate that these proteins have a surprisingly broad role in transcriptional regulation. Further, we find the Aux/IAA genes are regulated by many transcription factors and that some Aux/IAAs are required for tolerance to abiotic stress. We hypothesize that transcriptional control of Aux/IAA genes plays a central role in the establishment of the auxin-signaling pathways that regulate organogenesis, growth, and environmental response.

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Past Lectures (top)

October 30, 2014

Professor Xuemei ChenDepartment of Botany and Plant Sciences, University of California, Riverside and Howard Hughes Medical Institute Investigator. "Mechanisms of microRNA turnover in Arabidopsis." Download flyer

November 21, 2013

Professor Mary Lou Guerinot, Department of Biological Sciences, Dartmouth College, and Ronald and Deborah Harris Professor in the Sciences, "Gene Discovery in Aid of Plant Nutrition, Human Health and Environmental Remediation." Download flyer

February 16, 2012

Professor Steven E. Jacobsen, Department of Molecular, Cell, and Developmental Biology, UCLA, and Howard Hughes Medical Institute Investigator, "Genetics and Genomics of DNA Methylation in Arabidopsis." Download flyer

May 23, 2011
Joseph R. Ecker, Plant Molecular and Cellular Biology Laboratory, Salk Institute for Biological Studies. "Unraveling Plant Hormone Signaling Networks Using Genome-Wide Approaches." Download flyer

March 4, 2010
Richard M. Amasino, Department of Biochemistry, University of Wisconsin-Madison. "Vernalization: Remembering winter with an environmentally induced epigenetic switch." Download flyer

May 13, 2009
Peter McCourt, Cell and Systems Biology, Department of Cell and Systems Biology, University of Toronto. "From Arabidopsis to Parasitic plants: What chemical genetics can tell us." Download flyer

March 6, 2008
Joseph Kieber, Associate Chair and Professor, Department of Biology, University of North Carolina at Chapel Hill. "Cytokinin signaling: From autoclaved DNA to a
two-component response pathway." Download flyer

April 19, 2007
Steve A. Kay, Previously Chairman of the Department of Biochemistry, Professor of Cell Biology, and Director of the Institute for Childhood and Neglected Diseases The Scripps Research Institute. Currently Dean, Division of Biological Sciences, University of California-San Diego. "Systems approaches to understanding circadian clocks." Download flyer

April 10, 2006
Enrico Coen, Project Leader for the Cell & Development Biology Department for the John Innes Centre. "Evolutionary wormholes: the developmental genetics of diversity." Download flyer

April 7, 2005
Joanne Chory, HHMI Investigator, Professor in the Plant Biology Laboratory at the Salk Institute for Biological Studies, and Adjunct Professor of Biology at the University of California, San Diego. "Molecular mechanisms of steroid hormone signaling in plants." Download flyer

April 15, 2004
Detlef Weigel, director of the Department of Molecular Biology at Max Planck Institute for Development, Germany. "Plant Development: Insights from Microarrays and MicroRNAs." Download flyer

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