1. Center for Microbial Ecology and DOE Great Lakes Bioenergy Research Center Michigan State University 540 Plant and Soil Sciences Building East Lansing MI 48824‐1325 USA
2. Embrapa Agrobiologia BR 465, km 7 Seropédica Rio de Janeiro 23890‐000 Brazil
3. Department of Agronomy and DOE Great Lakes Bioenergy Research Center University of Wisconsin‐Madison 1575 Linden Drive Madison WI 53706 USA
4. State Key Laboratory of Forest and Soil Ecology Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110164 China
5. Department of Chemical Engineering and Applied Chemistry University of Toronto Toronto ON M5S 3E5 Canada