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Relative reference: Foxtail millet offers clues for assembling the switchgrass genome
Date:5/14/2012

l model in the lab for studying switchgrass traits such as cell wall formation. As a member of BESC, Bennetzen explained how using the Setaria genome could aid one of his team's bioenergy projects: "The biggest cost and bottleneck in biofuel production is converting lignocellulose to simple sugars. We're looking at traits associated with reduced recalcitrance (i.e., easier access to sugars) and looking for variations that alter cell wall composition. If it works in Setaria then the same approach will work in switchgrass."

For Tom Brutnell, a co-author on the study and director of the Enterprise Institute for Renewable Fuels at the Donald Danforth Plant Center, the Setaria genome is the starting point for his own research interests. "Now that we have the genome sequence, we can kickstart the development of genetic tools for Setaria." His proposal under the DOE JGI's 2012 Community Sequencing Program builds off the availability of two Setaria genomes, that of foxtail millet and its wild ancestor green foxtail (S. viridis), which is also described in the paper. "What we really want is an Arabidopsis for the Panicoid grasses," he said, referring to the ubiquitous plant model used by many researchers. "Green foxtail is smaller than foxtail milletwe can get it to flower when it's just six inches tall and you go from seed to seed in six to eight weeks. In contrast, foxtail millet is a proper crop, so it's taller, has a longer generation time of four months, and no one has really developed efficient transformation methods for it. Our project with the DOE JGI allows us to tap the Setaria genomes to fast track S. viridis as a model genetic system."

Michael Freeling, a researcher at the University of California, Berkeley who works on plant comparative genomics, said that the Setaria genome "adds much to the power of 'grasses as a single genetic system' and the plant biology community is for
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Contact: David Gilbert
degilbert@lbl.gov
925-296-5643
DOE/Joint Genome Institute
Source:Eurekalert

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