Clostridium sulfidigenes Sallam and Steinbüchel 2009 Sallam A. Steinbüchel A. Clostridium sulfidigenes sp. nov., a mesophilic, proteolytic, thiosulfate- and sulfur-reducing bacterium isolated from pond sediment 2009 59 7 1661 1665 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.004986-0 19542123