1. Departamento de Genetica, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, 13416-970, Piracicaba-São Paulo, Brazil1;
2. Department of Microbiology, University of Stellenbosch, Stellenbosch 7602, South Africa2; and
3. Institute for Microbial and Biochemical Technology, USDA Forest Products Laboratory, Madison, Wisconsin 537053