CALS Receives $3M Grant for Sustainable Biorubber Production

Much more suited for arid environments than rubber trees, the guayule plant is a promising candidate for more sustainable, high-yield natural rubber production. (Photo: Jack Dykinga/USDA)
Much more suited for arid environments than rubber trees, the guayule plant is a promising candidate for more sustainable, high-yield natural rubber production. (Photo: Jack Dykinga/USDA)

Yulex Corporation, an agricultural-based biomaterials company, will provide the University of Arizona a $3 million, five-year grant focused on breeding and agronomic development of the guayule plant, which holds great promise for the sustainable production of biorubber for medical, consumer and industrial applications.

Dennis Ray, a University Distinguished Professor in the School of Plant Sciences at the UA College of Agriculture and Life Sciences and a world-recognized guayule expert, will lead the effort to produce a higher yielding rubber crop and to substantially decrease guayule's harvest cycle time. Yulex and the UA will apply classical breeding along with modern tools for marker-assisted breeding to Guayule lines to select traits for the crop improvement program. Ray's research interests focus on evaluating new crops and products for cultivation and processing in arid environments.

The UA has supported Phoenix-based Yulex since the company's inception. Yulex's first experimental crops were planted on the grounds of the campus, and the University substantially contributed to Yulex's agronomic development successes.

More than 2,000 rubber-producing plants are known, but only two have been used commercially: the well-known rubber tree, Hevea brasiliensis, and guayule (Parthenium argentatum). Guyaule is an industrial crop that does not compete against food or fiber crops. It is a renewable source of natural rubber latex that can replace petroleum-based synthetics, lessen reliance on imported tropical rubber, and requires relatively little water with no pesticides. Guayule has been known as a source of rubber since the pre-Columbian peoples of Mexico used it to form balls for their games.

"The UA has a long and storied history of working on the development of guayule as a new industrial crop for Arizona," said Ray, who holds a joint appointment in the UA's School of Natural Resources and the Environment. "That there is now a guayule industry is due in part to the work of a number of UA researchers over the past 20 years, and that I have been part of this work is very exciting and fulfilling."

"Commercial production of guayule was always our goal, and we look forward to a continued and productive collaboration with Yulex Corporation, the world leader in developing different biomaterials from guayule. The goal of our work will be to increase the rubber content in Yulex's guayule lines and to decrease the time to harvest to help in the sustainable cultivation of guayule in Arizona."

Read the rest of this May 10, 2013 UANews article at the link below.

Date released: 
May 21 2013
Contact: 
Dennis Ray