Brachypodium sylvaticum, a Model for Perennial Grasses: Transformation and Inbred Line Development
- US Department of Agriculture (USDA), Albany, CA (United States). Agricultural Research Service
- US Department of Agriculture (USDA), Albany, CA (United States). Agricultural Research Service; University of California, Berkeley, CA (United States)
- US Department of Agriculture (USDA), Albany, CA (United States). Agricultural Research Service; University of California, Davis, CA (United States)
Perennial species offer significant advantages as crops including reduced soil erosion, lower energy inputs after the first year, deeper root systems that access more soil moisture, and decreased fertilizer inputs due to the remobilization of nutrients at the end of the growing season. These advantages are particularly relevant for emerging biomass crops and it is projected that perennial grasses will be among the most important dedicated biomass crops. The advantages offered by perennial crops could also prove favorable for incorporation into annual grain crops like wheat, rice, sorghum and barley, especially under the dryer and more variable climate conditions projected for many grain-producing regions. Thus, it would be useful to have a perennial model system to test biotechnological approaches to crop improvement and for fundamental research. The perennial grass Brachypodium sylvaticum is a candidate for such a model because it is diploid, has a small genome, is self-fertile, has a modest stature, and short generation time. Its close relationship to the annual model Brachypodium distachyon will facilitate comparative studies and allow researchers to leverage the resources developed for B. distachyon. Here we report on the development of two keystone resources that are essential for a model plant: high-efficiency transformation and inbred lines. Using Agrobacterium tumefaciens-mediated transformation we achieved an average transformation efficiency of 67%. We also surveyed the genetic diversity of 19 accessions from the National Plant Germplasm System using SSR markers and created 15 inbred lines.
- Research Organization:
- University of California, Berkeley, CA (United States); US Department of Agriculture (USDA), Albany, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); USDA
- OSTI ID:
- 1904008
- Journal Information:
- PLoS ONE, Vol. 8, Issue 9; ISSN 1932-6203
- Publisher:
- Public Library of ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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