Hiroshi Ikuma, Ph.D., professor of biology in the College of
Literature, Science, and the Arts, retired from active faculty status on May
31, 2000.

Professor Ikuma received his B.Sc. degree from Kobe University,
Kobe, Japan, in 1956 and his A.M. and Ph.D. degrees from Harvard
University in 1958 and 1962, respectively. From 1962-65, he was a
postdoctoral fellow at the University of Pennsylvania. He joined the faculty
of the University of Michigan as an assistant professor in 1965. He was
promoted to associate professor in 1969 and professor in 1975.

At Harvard, Professor Ikuma worked with Kenneth V. Thimann, a
pioneer in the development of modern developmental plant physiology,
carrying out groundbreaking studies on the effects of light, other
environmental factors, and plant hormones on lettuce seed germination.
Working with Walter Bonner at the University of Pennsylvania, he was
among the first investigators to describe the properties of carefully isolated
plant mitochondria. At the University of Michigan, Professor Ikuma's
research has emphasized discovery and characterization of factors that
regulate plant growth and development. He continued his pioneering work
on the properties of plant mitochondria, focusing on energy coupling
reactions and on the metabolism of organic acids in the organelle. He also
initiated new research programs that have revealed new roles of light,
temperature, and hormones in regulation of the complex series of metabolic
events that culminate in seed germination.

Within the Department of Biology, Professor Ikuma has played a
leading role in teaching. He developed new laboratory exercises for
introductory courses and for the department's flagship plant physiology
offering, which he also taught with distinction for a number of years.
Likewise, his contributions to the department's one-term, accelerated
introductory course made this a very popular first-year offering for entering
undergraduates with prior course work in biology. He served as associate
chair for undergraduate curriculum from 1983-87.

The Regents salute this distinguished scholar by naming Hiroshi
Ikuma professor emeritus of biology.