Effect of AI crude extract on PHB accumulation and hydrogen photoproduction in Rhodobacter sphaeroides》.pdfVIP

i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 8 ( 2 0 1 3 ) 1 5 7 7 0 e 1 5 7 7 6 Available online at journal homepage: /locate/he Effect of AI crude extract on PHB accumulation and hydrogen photoproduction in Rhodobacter sphaeroides a, b b c d Jiang-Yu Ye *, Tao Liu , Yu Chen , Qiang Liao , Zhong-Kang Wang , Gang-Cai Chen e a College of City Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China b College of Life Sciences, Southwest University, Chongqing 400715, China c Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China d Key Laboratory of Genetic Function and Regulation, Chongqing University, Chongqing 400045, China e Chongqing Academy of Environmental Science, Chongqing 401147, China a r t i c l e i n f o a b s t r a c t Article history: Poly-b-hydroxy butyric acid (PHB) accumulation and gaseous H2 release are regarded as Received 23 January 2013 alternatives for expending reducing power. Some researchers suggested that quorum- Received in revised form sensing system affects PHB accumulation in Rhodobacter sphaeroides, but whether the sys- 24 March 2013 tem plays regulation role between hydrogen producing and PHB synthesis is still unknown. Accepted 26 March 2013 By adding autoinducer of R. sphaeroides into its culture solutions, measuring its total Available online 1 May 2013 hydrogen production, PHB content and PHB synthase activity, the function of quorum-