[1] Univ Oklahoma, Dept Microbiol & Plant Biol, Inst Environm Genom, Norman, OK 73019 USA
[2] Tsinghua Univ, Sch Environm, Beijing, Peoples R China
[3] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne, Tyne & Wear, England
[4] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN USA
[5] MIT, Dept Biol Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA