@article {Palenik2007, title = {The tiny eukaryote \textit{Ostreococcus provides genomic insights into the paradox of plankton speciation}, journal = {Proceedings of the National Academy of Sciences of the United States of America}, volume = {104}, number = {18}, year = {2007}, note = {tex.mendeley-tags: RCC,rcc}, pages = {7705{\textendash}7710}, abstract = {The smallest known eukaryotes, at approximately 1-mum diameter, are Ostreococcus tauri and related species of marine phytoplankton. The genome of Ostreococcus lucimarinus has been completed and compared with that of O. tauri. This comparison reveals surprising differences across orthologous chromosomes in the two species from highly syntenic chromosomes in most cases to chromosomes with almost no similarity. Species divergence in these phytoplankton is occurring through multiple mechanisms acting differently on different chromosomes and likely including acquisition of new genes through horizontal gene transfer. We speculate that this latter process may be involved in altering the cell-surface characteristics of each species. In addition, the genome of O. lucimarinus provides insights into the unique metal metabolism of these organisms, which are predicted to have a large number of selenocysteine-containing proteins. Selenoenzymes are more catalytically active than similar enzymes lacking selenium, and thus the cell may require less of that protein. As reported here, selenoenzymes, novel fusion proteins, and loss of some major protein families including ones associated with chromatin are likely important adaptations for achieving a small cell size.}, keywords = {rcc}, url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve\&db=PubMed\&dopt=Citation\&list_uids=17460045}, author = {Palenik, B and Grimwood, J and Aerts, A and Rouz{\'e}, P and Salamov, A and Putnam, N and Dupont, C and Jorgensen, R and Derelle, E and Rombauts, S and Zhou, K and Otillar, R and Merchant, S S and Podell, S and Gaasterland, T and Napoli, C and Gendler, K and Manuell, A and Tai, V and Vallon, O and Piganeau, G and Jancek, S and Heijde, M and Jabbari, K and Bowler, C and Lohr, M and Robbens, S and Werner, G and Dubchak, I and Pazour, G J and Ren, Q and Paulsen, I and Delwiche, C and Schmutz, J and Rokhsar, D and Van de Peer, Y and Moreau, H and Grigoriev, I V} } @article {Palenik2003, title = {The genome of a motile marine Synechococcus}, journal = {Nature}, volume = {424}, number = {6952}, year = {2003}, note = {tex.mendeley-tags: 2003,rcc,sbr?hyto}, pages = {1037{\textendash}1042}, abstract = {Marine unicellular cyanobacteria are responsible for an estimated 20-40\% of chlorophyll biomass and carbon fixation in the oceans(1). Here we have sequenced and analysed the 2.4-megabase genome of Synechococcus sp. strain WH8102, revealing some of the ways that these organisms have adapted to their largely oligotrophic environment. WH8102 uses organic nitrogen and phosphorus sources and more sodium-dependent transporters than a model freshwater cyanobacterium. Furthermore, it seems to have adopted strategies for conserving limited iron stores by using nickel and cobalt in some enzymes, has reduced its regulatory machinery (consistent with the fact that the open ocean constitutes a far more constant and buffered environment than fresh water), and has evolved a unique type of swimming motility. The genome of WH8102 seems to have been greatly influenced by horizontal gene transfer, partially through phages. The genetic material contributed by horizontal gene transfer includes genes involved in the modification of the cell surface and in swimming motility. On the basis of its genome, WH8102 is more of a generalist than two related marine cyanobacteria(2).}, keywords = {2003, Cyanobacterium Synechococcus, Degradation, Ecology, Gene, IDENTIFICATION, Polypeptide, Prochlorococcus, rcc, SBR$_\textrmP$hyto, sbr?hyto, SEQUENCE, Sp Pcc7942, Strains}, doi = {10.1038/nature01943}, author = {Palenik, B and Brahamsha, B and Larimer, F W and Land, M and Hauser, L and Chain, P and Lamerdin, J and Regala, W and Allen, E E and McCarren, J and Paulsen, I and Dufresne, A and Partensky, F and Webb, E A and Waterbury, J} } @article {Toledo2003, title = {A Synechococcus serotype is found preferentially in surface marine waters}, journal = {Limnology and Oceanography}, volume = {48}, number = {5}, year = {2003}, note = {tex.mendeley-tags: RCC,rcc}, pages = {1744{\textendash}1755}, abstract = {In marine ecosystems, gradients of light, temperature, and nutrients occur horizontally (coastal to offshore) and vertically. The extent to which microorganisms acclimate or speciate in response to these gradients is under active investigation. Strain isolation data (e.g., site or depth), environmental DNA clone libraries, and preliminary physiology experiments have indicated that marine Synechococcus strain CC9605 might be adapted to the surface oligotrophic ocean. In the present work, we used an immunofluorescent approach to detect the CC9605 serotype in the California Current during September 1998. At two offshore stations, samples were collected along vertical profiles. The relative abundance of the CC9605 serotype was significantly higher in shallow depths within the mixed layer than in deeper depths at the two stations, with maximum values (+/- standard deviation) of 10.3\% +/- 6.4 and 28.7\% +/- 9.5. Surface samples along an offshore-inshore transect showed higher abundance in the most oligotrophic site (8\% +/- 3), compared with almost 1\% inshore, but one coastal site also had high relative abundance of the CC9605 serotype (7\% +/- 0.5). These data indicate that Synechococcus strains are not uniformly distributed and that some strains, such as CC9605, are more abundant in the mixed layer of the euphotic zone than below the mixed layer.}, keywords = {Aquatic-sciences, california-current, cyanobacteria-, diversity-, flow-cytometry, immunofluorescence-, North-atlantic-ocean, phytoplankton-, prochlorococcus-populations, rcc, sargasso-sea, strains-}, doi = {10.4319/lo.2003.48.5.1744}, author = {Toledo, G and Palenik, B} } @article {toledo_synechococcus_1997, title = {Synechococcus diversity in the California current as seen by RNA polymerase (rpoC1) gene sequences of isolated strains.}, journal = {Applied and environmental microbiology}, volume = {63}, number = {11}, year = {1997}, pages = {4298{\textendash}4303}, keywords = {RCC1086}, issn = {0099-2240}, doi = {10.1128/AEM.63.11.4298-4303.1997}, url = {https://AEM.asm.org/content/63/11/4298}, author = {Toledo, G and Palenik, B} } @article {Chisholm1992, title = {\textit{Prochlorococcus marinus nov. gen. nov. sp.: an oxyphototrophic marine prokaryote containing divinyl chlorophyll a and b}, journal = {Archives of Microbiology}, volume = {157}, year = {1992}, note = {tex.mendeley-tags: RCC,rcc}, pages = {297{\textendash}300}, keywords = {rcc, systematics, \#PROCHLOROPHYTE}, doi = {10.1007/BF00245165}, author = {Chisholm, S W and Frankel, S L and Goericke, R and Olson, R J and Palenik, B and Waterbury, J B and West-Johnsrud, L and Zettler, E R} }