Disease relevance of Prochlorococcus

• The phage psbA genes fall into a clade that includes the psbA genes from their potential Synechococcus and Prochlorococcus hosts, and thus, this phylogenetic analysis provides evidence to support the idea of the acquisition of these genes by horizontal gene transfer from their cyanobacterial hosts [1].
• Differences in the absorption properties and cellular costs between chlorophyll a(2)/b(2) and phycobilisome antennas in extant Prochlorococcus and Synechococcus appear to play a role in differentiating their ecological niches in the ocean environment [2].
• Partial sequence of ribulose-1,5-bisphosphate carboxylase/oxygenase and the phylogeny of Prochloron and Prochlorococcus (Prochlorales) [3].
• Secondly, the two HCO(3)(-) and CO(2) transport systems are distributed variably, with some cyanobacteria (Prochlorococcus marinus species) appearing to lack CO(2) uptake systems entirely [4].

High impact information on Prochlorococcus

• Furthermore, identification of the DVR gene helped understanding the evolution of Prochlorococcus marinus, a marine cyanobacterium that is dominant in the open ocean and is uncommon in using divinyl chlorophylls [5].
• In contrast, Prochlorococcus sp. MED4, a high-light-adapted ecotype, possesses a single pcb gene [6].
• The sbtA gene is the first one identified as essential to Na(+)-dependent HCO(3)(-) transport in photosynthetic organisms and may play a crucial role in carbon acquisition when CO(2) supply is limited, or in Prochlorococcus strains that do not possess CO(2) uptake systems or Cmp-dependent HCO(3)(-) transport [7].
• In the Atlantic, AAP bacterial abundance was as much as 2-fold higher than that of Prochlorococcus spp. and 10-fold higher than that of Synechococcus spp [8].
• Measurement of Prochlorococcus ecotypes using real-time polymerase chain reaction reveals different abundances of genotypes with similar light physiologies [9].

Chemical compound and disease context of Prochlorococcus

• Niche-partitioning of Prochlorococcus populations in a stratified water column in the eastern North Atlantic Ocean [10].
• Phycourobilin is the major chromophore in low-light-adapted Prochlorococcus ecotypes such as strain SS120 [11].
• The similar effects of DCMU and DBMIB on the expression of psbA suggest that light regulation of psbA in Prochlorococcus may be mediated by the electron transport chain [12].
• Moreover, the diversity of these genes is low in Prochlorococcus since most histidine kinases are related to a single group (type I) and most response regulators to a single family (OmpR) [13].

Biological context of Prochlorococcus

• Shifting Prochlorococcus cells from low to high irradiance translated quasi-instantaneously into an increase of cells in both the S and G2 phases of the cell cycle and then into faster growth, whereas the inverse shift induced rapid slowing of the population growth rate [14].
• Phylogenetic analysis of glnA from three Prochlorococcus strains (MED4, MIT9313 and SS120) showed they group closely with marine Synechococcus isolates, in good agreement with other studies based on 16 S RNA sequences [15].
• In order to study DNA replication control elements in cyanobacteria we cloned and sequenced the dnaA gene from the marine cyanobacterium Prochlorococcus marinus [16].
• The high-light-adapted Prochlorococcus Med4 has the smallest genome (1.7 Mb), yet it has more than twice as many hli genes as any of the other six cyanobacterial species, some of which appear to have arisen from recent duplication events [17].

Gene context of Prochlorococcus

• Unique organization of the dnaA region from Prochlorococcus marinus CCMP1375, a marine cyanobacterium [16].
• In the high-light-adapted unicellular marine cyanobacterium Prochlorococcus sp. MED4 the cpeB gene is the only gene coding for a structural phycobiliprotein [11].
• Expression of the psbA gene in the marine oxyphotobacteria Prochlorococcus spp [12].
• Rapid evolutionary divergence of Photosystem I core subunits PsaA and PsaB in the marine prokaryote Prochlorococcus [18].
• Here, an analysis of HL-adapted Prochlorococcus strains from different ocean provinces revealed the presence of a cpeB gene highly similar to that of MED4 [19].

References