State of the art review of biofuels production from lignocellulose by thermophilic bacteria.Biofuels, including ethanol and butanol, are mainly produced by mesophilic solventogenic yeasts and Clostridium species.  More recently, thermophilic bacteria show great potential for biofuels production, which could efficiently degrade lignocellulose through the cost effective consolidated bioprocessing.  However, wild types thermophiles generally produce low levels of biofuels, hindering their large scale production.  This review comprehensively summarizes the state of the art development of biofuels production by reported thermophilic microorganisms, and also concludes strategies to improve biofuels production including the metabolic pathways construction, co-culturing systems and biofuels tolerance. 
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