The Jeanette Siron Pelton Award
The Botanical Society of America proudly supports the Conservation
and Research Foundation in honoring the memory of DR.
JEANETTE SIRON PELTON. The Jeanette Siron Pelton Award
is made by The Conservation and Research Foundation of
New London, CT, through the Botanical Society of America,
for sustained and creative contributions in experimental plant
morphology. BSA appoints the nomination committee and presents
the award at the annual meeting. Beginning in 1998, the recipient
of the Pelton Award has been invited to present a special address
at the BSA Annual Meeting the year following the award presentation.
The Pelton Award is given in recognition of outstanding contributions
in the field of experimental plant morphology. The field is broadly
defined to include the subcellular, cellular and organismal levels
Call for Award Nominations: January 1 - April 1, 2013.
2012 - Dr. Martha C. Hawes, University of Arizona
Martha C. Hawes is well known for her work on root border cells. In the past, most people considered these cells to be ”sloughed-off root caps cells” that were non-viable and without function. Martha’s entire career has focused on changing this perception and now border cells are described in numerous botany textbooks. Throughout her entire career, she has been very creative in designing experiments to understand the basic biology of this unique cell type especially in light of how border cells fight plant disease. These metabolically active and viable border cells “trap’ fungi and other potential pathogens, which are then detached from the root surface leaving the root tip free of infection. Considering that the root tip serves as one of the major sources of root exudates that can attract microbial pathogens, the fact that this exceptionally vulnerable region of the root is protected from infection by the border cells is a real paradigm shift, especially via the mechanism Dr. Hawes proposes.
2006 - Dr. Tobias Baskin,
University of Massachusetts, Amherst
Dr. Tobias Baskin is recognized for his research into how plants control their
shape via cellulose microfibrils and the microtubule cytoskeleton. He has made
fundamental contributions to our understanding of how local cortical microtubule
organization is related to microfibril orientation, which constrains cell and,
ultimately, organ growth in longitudinal and radial directions. He has combined
physiological, cytological, ultrastructural and genetic approaches to his studies
of cell growth, and is credited with important innovations of microscopic techniques.
Dr. Baskin is currently investigating the interaction of specific proteins with
cortical microtubules, the plasmamembrane, and the cellulose synthase complexes
in the membrane, to critically evaluate his proposed model of cell wall control
of its own microfibril orientation.
2004 - William E. Friedman, University of Colorado
Dr. Friedman is highly commended and recognized for his research contributions on double fertilization in Gnetophytes, the origin of angiosperm endosperm and concepts on the early evolution of gametophytic structure.
2002 - Karl J. Niklas,
Dr. Niklas is noted for this exemplary work in the areas of theoretical and
experimental examination of plant form, strategy, and evolution. His pioneering
studies applying mathematical and structural modeling to describe plant geometry
have provided a strong basis for understanding the optimization of plant form.
He has effectively applied this approach to the three basic vegetative structures
as well as to flowers, strobili, and inflorescences. His studies have produced
an extraordinarily rich and diverse series of publications that will serve the
field for many years to come.
2000 - Ben Scheres,
University of Utrecht
Dr. Scheres is noted for his exceptional research and commentary in plant morphogenesis.
Dr. Scheres is an outstanding analyst and researcher of plant development, especially
of roots where he has made seminal contributions. He demonstrated the dominance
of position over lineage in determining root cell fate, and has established
the significance of signaling between different populations of cells in the
root. He has shown that quiescent cells in the center of the root meristem play
an important role in preventing surrounding cells from differentiating prematurely
and thus function in root development. His identification and analysis of several
Arabidopsis mutants have significantly advanced our understanding of the genes
that control root architecture and cell specification. He is the author of numerous
influential reviews. Dr. Scheres has had a major impact on the field of morphogenesis
and is deeply deserving of this award.
1998 - Donald Kaplan,
University of California, Berkeley
Dr. Kaplan is cited for excellence in research scholarship in the areas of plant
morphology and morphogenesis throughout his career. He has reached out both
to traditional plant biologists as well as to those who have come to plant biology
through an interest in molecular aspects of biology. He is the author of numerous
substantive publications on leaf development that are recognized as classic
papers on the subject. Of particular significance is his work on the relationship
between the cell and the organism as it has required both plant organismal biologists
and molecular geneticists to reevaluate their thinking about the underlying
mechanisms responsible for the origin of plant form.
1996 - Sarah C. Hake,
University of California, Berkeley
For using a genetic molecular approach to make a significant impact on our understanding of the mechanisms of plant morphogenesis. She was the first to show that homeobox genes, known to be important regulators of morphological pattern formation in animals, also regulate plant development.
1994 - E. M. Meyerowitz,
California Institute of Technology
Dr. Meyerowitz has combined a genetic and developmental approach to flowering that has profoundly affected the field of plant morphogenesis by discovering regulatory genes that confer identity during organogenesis.
1993 - Richard Scott
Poethig, University of Pennsylvania
Dr. Poethig's contributions to the understanding of genetic control of plant
morphogenesis are broad and profound. His research has capitalized on whole-plant,
cellular, and molecular techniques to further understand homeotic mutations
in corn. The committee was particularly impressed with his work on genetic mosaics
as an experimental tool to examine the morphological consequences of mutant
tissue and the genetic controls on phase changes in corn development. His contributions
are anticipated to shed light on many botanical systems other than corn.
1989 - E. M. Lord,
University of California - Riverside
In recognition of her outstanding, original studies on the development and function of floral organs. Her multifaceted approach, using anatomical and physiological techniques as well as kinematic analysis especially in the comparison of cleistogamous and chasmogamous flowers have significantly advanced our knowledge of flower development as well as its function in breeding systems. Her finding that inert latex beads are moved from the stigma to the ovary by the stylar matrix has provided exciting new insights on postpollination events.
1988 - Scott D. Russell,
University of Oklahoma
1985 - T. Sachs,
Hebrew University, Jerusalem, Israel
1983 - T. J. Cooke,
University of Maryland for his original and fundamental contributions to our understanding of fern gametophyte morphogenesis. As a result of his unique biophysical perspectives, Dr. Cooke's work has significantly altered previous views of the role of light and various biochemical agents on the control of gametophyte growth and differentiation.
1980 - L. J. Feldman,
University of California - Berkeley
1978 - B. E. S. Gunning,
Australian National University, Canberra, Australia
1975 - P. K. Hepler,
University of Massachusetts
The fourth recipient of this Award, Dr. Peter Klock Hepler, whose penetrating analytical and experimental studies of the ultrastructure of differentiating cells have made a significant and lasting contribution to our perception of morphogenesis at the cellular level. In particular his work on the ultrastructure of differentiating xylem elements, on the roles of microtubules and microfibrils, and on the control of the orientation of mitotic spindles in differentiating cells have provided new insights which hold great promise for the future.
1972 - P. B. Green,
1970 - C. W. Wardlaw,
Emeritus Professor of Botany, University of Manchester, England
Professor Wardlaw thus became the second person to be honored by this award, which carries a stipend of $1,000. The citation accompanying the award stated: "Experimental morphology is a synthetic science and draws its practitioners from the full spectrum of plant science. It is completely fitting that this award be presented to a man whose scholarship epitomizes the style of the discipline. Professor Wardlaw's accomplishments are many and varied, ranging from authoritative works on the diseases of tropical plants to investigations of morphogenesis in pteridophytes and angiosperms. Perhaps his greatest contribution has been made through his various books in which he has effectively argued for a broad philosophical view of developmental problems. He has outlined many of the basic morphogenetic problems during the past two decades, and his eloquent pleas for an integrative approach to the study of plant development will provide a hallmark for all future investigators."
1969 - R. H. Wetmore,