title: Transcriptome for photobiological hydrogen production induced by sulfur deprivation in the green alga Chlamydomonas reinhardtii.
abstract: Photobiological hydrogen production using microalgae is being developed into a promising clean fuel stream for the future. In this study, microarray analyses were used to obtain global expression profiles of mRNA abundance in the green alga Chlamydomonas reinhardtii at different time points before the onset and during the course of sulfur-depleted hydrogen production. These studies were followed by real-time quantitative reverse transcription-PCR and protein analyses. The present work provides new insights into photosynthesis, sulfur acquisition strategies, and carbon metabolism-related gene expression during sulfur-induced hydrogen production. A general trend toward repression of transcripts encoding photosynthetic genes was observed. In contrast to all other LHCBM genes, the abundance of the LHCBM9 transcript (encoding a major light-harvesting polypeptide) and its protein was strongly elevated throughout the experiment. This suggests a major remodeling of the photosystem II light-harvesting complex as well as an important function of LHCBM9 under sulfur starvation and photobiological hydrogen production. This paper presents the first global transcriptional analysis of C. reinhardtii before, during, and after photobiological hydrogen production under sulfur deprivation.
authors: School of Integrative Biology, University of Queensland, St. Lucia, Queensland 4072, Australia.
authors: Anh Vu
authors: AV
authors: Nguyen
authors: Skye R
authors: SR
authors: Thomas-Hall
authors: Alizée
authors: A
authors: Malnoë
authors: Matthew
authors: M
authors: Timmins
authors: Jan H
authors: JH
authors: Mussgnug
authors: Jens
authors: J
authors: Rupprecht
authors: Olaf
authors: O
authors: Kruse
authors: Ben
authors: B
authors: Hankamer
authors: Peer M
authors: PM
authors: Schenk
mesh_terms: D020418:Algal Proteins / Q000235:genetics / Q000378:metabolism; D000596:Amino Acids / Q000378:metabolism; D000460:Chlorophyta / Q000235:genetics* / Q000378:metabolism* / Q000528:radiation effects; D020869:Gene Expression Profiling; D006859:Hydrogen / Q000378:metabolism*; D045342:Light-Harvesting Protein Complexes / Q000235:genetics / Q000378:metabolism; D008969:Molecular Sequence Data; D020411:Oligonucleotide Array Sequence Analysis; D010788:Photosynthesis; D014176:Protein Biosynthesis; D013455:Sulfur / Q000378:metabolism*; D014158:Transcription, Genetic
chemical_list: D020418:Algal Proteins; D000596:Amino Acids; D045342:Light-Harvesting Protein Complexes; D013455:Sulfur; D006859:Hydrogen