High-efficiency Agrobacterium-mediated transformation of Brachypodium distachyon inbred line Bd21-3.
Brachypodium distachyon (Brachypodium) is a small grass with biological attributes (rapid generation time, small genome, diploid accessions, small stature and simple growth requirements) that make it suitable for use as a model system. In addition, a growing list of genomic resources have been developed or are currently under development including: cDNA libraries, BAC libraries, EST sequences, BAC end sequences, a physical map, genetic markers, a linkage map and, most importantly, the complete genome sequence. To maximize the utility of Brachypodium as a model grass it is necessary to develop an efficient Agrobacterium-mediated transformation system. In this report we describe the identification of a transformable inbred diploid line, Bd21-3, and the development of a transformation method with transformation efficiencies as high as 41% of co-cultivated calluses producing transgenic plants. Conducting the co-cultivation step under desiccating conditions produced the greatest improvement in transformation efficiency.
Vogel
John
J
USDA Western Regional Research Center, Albany, CA 94710, USA. jvogel@pw.usda.gov
Hill
Theresa
T
D015139:Blotting, Southern; D018744:DNA, Plant / Q000235:genetics; D018745:Genome, Plant / Q000235:genetics; D030821:Plants, Genetically Modified; D006109:Poaceae / Q000235:genetics*; D012231:Rhizobium / Q000235:genetics*; D017422:Sequence Analysis, DNA; D014170:Transformation, Genetic / Q000235:genetics*
D018744:DNA, Plant