Grant will help scientists uncover hidden soybean genes
Soybeans are the world's largest single source of vegetable protein and edible oil, already used to make livestock feed, soymilk, tofu, adhesives, alternative fuels, disinfectants, plastics and particleboard. Using a $1 million grant from the National Science Foundation, University of Georgia researcher Wayne Parrott hopes to uncover more uses for the popular legume.
"The soybean is a key crop for meeting the nutritional needs of the increasing global population," said Parrott, a plant geneticist and professor in the UGA College of Agricultural and Environmental Sciences. "A thorough understanding of soybean genetics is important for the development of new soybean varieties to meet the nutritional, environmental and industrial requirements that soybean could fulfill over the coming decades."
Under the grant, Parrott will work with scientists at the University of Missouri; Gary Stacey, Carroll Vance and Robert Stupar at University of Minnesota Twin Cities campus; and Tom Clemente at the University of Nebraska-Lincoln.
Many research tools are available for studying the genetics of soybean, but Parrott says one resource is notably missing—reverse genetic tools.
"These tools provide a way to identify and determine the function of soybean genes of academic, biological or agricultural importance," he said. "Genomic studies of soybean are targeted at understanding the biology behind its unique ability to produce high amounts of both oil and protein."
Another research team previously developed and translated a soybean genetic map to help soybean breeders produce a better bean. Parrott's team now hopes to uncover the function of the most important genes among the 45,000 to 50,000 genes in the soybean genome. The new project's long-term goal is to investigate the function of soybean genes, especially those involved in soybean quality and yield.
"The primary objective is to provide novel mutant plants for soybean functional genomics research and for breeders to use for improved varieties," Parrott said.
Over the next three years, the scientists will build and catalogue a collection of soybean insertional and gene activation mutants. To do that, Parrott is using a jumping gene that UGA plant biology professor Sue Wessler found in rice. The gene is one of only a few with the ability to cut itself out and move to another location in the genome, altering it, he said.
The jumping rice gene was inserted into soybean plants in Parrott's laboratory. When something changes in a plant with the added jumping gene—such as how fast it flowers—he will then search the plant genetically. When the jumping gene is found—presumably in a new location in the genome—he can identify the modified gene there and, in this example, know what caused the plant to bloom faster.
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