Southwestern Oklahoma State University

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Alumni and Friends
100 Campus Drive
Weatherford, OK 73096
Phone: (580) 774-3267
Fax: (580) 774-7055

Distinguished Alumni

David Seigler

Dr. David S. Seigler - 1994

Dr. David S. Seigler, a native of Wichita Falls, Texas, is a 1961 graduate of Southwestern where he majored in chemistry.  Dr. Seigler is currently a professor in the Department of Plant Biology and Horticulture at the University of Illinois at Urbana- Champaign.  He has been at the Illinois University since 1970.  During that time, Seigler has authored or coauthored over 100 publications and has participated in several book projects.  His latest book “Plant Secondary Metabolism,” will be released soon by Chapman and Hall of New York City. 

Seigler’s research focus has been on the role of plant compounds in biological problems, such as plant insects, plant fungal, and plant herbivore interactions. 

Much of his work has involved cyanide and tannins from plants and study of acacia and passiflor species.  He has conducted research in several Latin American countries and received the Fullbright-Hays Lecturing Research Grant to teach at the University of Buenos Aires in Argentina. 

He has also been very active in professional services and is a renowned expert in his field.  He has served as national president of the Phytochemical Society of North America and the International Society of Chemical Ecology.  The SWOSU graduate earned his doctorate in organic chemistry in 1967 from the University of Oklahoma.  He then completed postdoctoral work at the Northern Regional Laboratory of the United States Department of Agriculture in Peoria, Illinois, and at the University of Texas in Austin. 

In addition to his departmental work at the University of Illinois, Seigler serves as the curator of the University of Illinois Herbarium, research associate with the Missouri Botanic Garden in St. Lewis, and affiliate professional scientist with the Illinois Center of Economic entomology. 

Seigler is married to Weatherford native Janice Cline.  They have two daughters:  Dava Carson of Champaign, Ill., and Rebecca Musgrove of Urbana, Ill.  The Seiglers also have four grandchildren.