STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
This invention was supported in part by finds from the U.S. Government (National Science Foundation Grant No. MCB-9604246, Department of Agriculture NRICGP Grant No. 9337304, Department of Agriculture Grant No. 98-35304-6684, and Department of Energy Grant Nos. DE-FG02-91ER20055, DE-FG02-94ER20162, and DE-FG07-96ER20253) and the U.S. Government may therefore have certain rights in the invention.