Project description:Here, we report a transcriptomics analysis on a day in the life of Chlamydomonas reinhardtii. Cultures of this unicellular alga were grown in photobioreactors on a 12 h light / 12 h dark cycle. Samples were collected at regular intervals and subjected to a transcriptomics analysis by RNA-Seq.

2019-01-03 | GSE112394 | GEO

Transcriptome analysis of Chlamydomonas reinhardtii chloroplast and mitochondria

Project description:Here, we report on the transcriptome of the organelles of the micro-alga, Chlamydomonas reinhardtii, sampled under a number of different conditions. The preparation of the RNA-Seq libraries and their analysis were performed using protocols optimized for organellar transcripts. Samples include growth in media +/– Fe, growth in media +/– Cu, diurnal growth samples collected in dark and light, and the sexual cycle.

2017-11-27 | GSE101944 | GEO

Small RNAs in Chlamydomonas reinhardtii

Project description:RNA populations in Chlamydomonas reinhardtii Keywords: Highly parallel pyrosequencing Small RNAs were prepared from Chlamydomonas reinhardtii total extracts,ligated to a 3' adaptor and a 5' acceptor sequentially, and then RT-PCR amplified. PCR products were reamplified using a pair of 454 cloning primers and provided to 454 Life Sciences (Branford, CT) for sequencing. For technical details, see Tao Zhao, Guanglin Li, Shijun Mi, Shan Li, Gregory J. Hannon, Xiu-Jie Wang, and Yijun Qi. 2007. A Complex System of Small RNAs in the Unicellular Green Alga Chlamydomonas reinhardtii. Genes & Development

2007-05-15 | E-GEOD-7308 | biostudies-arrayexpress

Transcriptomics study of excess Mn (1000 uM) in Chlamydomonas reinhardtii

Project description:Liquid cultures of the unicellular green alga, Chlamydomonas reinhardtii were grown in media with 6 uM Mn (control) or 1000 uM Mn (experimental), and analyzed by RNA-Seq to identify genes that are differentially expressed in response to excess Mn.

2022-03-25 | GSE169756 | GEO

Bilin-dependent photoacclimation in Chlamydomonas reinhardtii

Project description:Linear tetrapyrrole (bilin)-based phytochrome sensors optimize photosynthetic light capture by mediating massive gene reprogramming in land plants, yet surprisingly, many sequenced chlorophyte (green) algae lack phytochrome genes. Previous studies on the heme oxygenase (hmox1) mutant of Chlamydomonas reinhardtii suggest that bilin biosynthesis in plastids is needed for regulation of a limited nuclear gene network implicated in oxygen detoxification during dark to light transitions. The hmox1 mutant is unable to grow photoautotrophically and poorly acclimates to increased illumination even in the presence of acetate. Here we show that these phenotypes reflect the reduced accumulation of PSI reaction centers as well as a loss of PSI and PSII antennae complexes during photoacclimation. Phenotypically, the hmox1 mutant is similar to the chlorophyll biosynthesis mutants, gun4, crd1 and cth1. However, many of the hmox1 phenotypes can be rescued by the application of exogenous biliverdin IXα, the bilin product of HMOX1; this rescue is independent of photosynthesis but strongly dependent upon blue light. RNA-Seq comparisons of hmox1, 4A+ wild type and two genetically complemented lines also reveal that bilins restore regulation of a small network of photosynthesis-associated nuclear genes. These include genes responsible for chlorophyll biosynthesis (CHLI1/2), PSI light-harvesting (LHCA4) and naphthoquinone metabolism (MEN2), all of which show reduced photoinduction in the hmox1 mutant. We propose that a bilin-based, blue light sensory system is responsible for the maintenance of a functional photosynthetic apparatus in light-grown C. reinhardtii. This critical and possibly ancestral role for bilins may be responsible for retention of bilin biosynthesis in all eukaryotic photosynthetic species.

2019-01-24 | GSE77388 | GEO

Expression analysis of Chlamydomonas reinhardtii exposed to silver

Project description:Chlamydomonas reinhardtii exposed to various concentrations of silver

2013-10-01 | GSE48677 | GEO

Chlamydomonas reinhardtii RNA-Seq

Project description:Comparison of gene expression for Chlamydomonas cells grown for 0h, 48h, 72h, 96h in sulfur depleted media

2014-09-08 | E-MTAB-1329 | biostudies-arrayexpress