PLoS Genet 2008, 4:1–14. 29. Cooper S, Helmstetter CE: Chromosome replication and the division cycle of Escherichia coli B/r. J Mol Biol 1968, 31:519–540.PubMed 30. Carpenter EJ, Chang J: Species-specific phytoplankton growth-rates via diel DNA-synthesis cycles. I. Concept of the method. Mar Ecol Prog Ser 1988, 43:105–111. 31. Komenda J, Knoppova J, Krynicka V, Nixon PJ, Tichy M: Role of FtsH2 in the repair of Photosystem II in mutants of the cyanobacterium Synechocystis PCC 6803 with impaired assembly or stability of the CaMn(4) cluster. Biochim Biophys Acta 2010, 1797:566–575.PubMed GDC973 32. Marbouty M, Saguez

C, Cassier-Chauvat C, Chauvat F: Characterization of the FtsZ-interacting septal proteins SepF and Ftn6 in the spherical-celled cyanobacterium Synechocystis strain PCC6803. J Bacteriol 2009, 191:6178–6185.PubMed 33. Beuning PJ, Simon SM, Godoy VG, Jarosz DF, Walker GC: Characterization of Escherichia coli translesion synthesis polymerases and

their accessory factors. Methods Enzymol 2006, 408:318–340.PubMed 34. Sepantronium Osanai T, Ikeuchi M, Tanaka K: Group 2 sigma factors in cyanobacteria. Physiol Plant 2008, 133:490–506.PubMed 35. Imamura S, Asayama M: Sigma factors for cyanobacterial transcription. Gene Regul Syst Biol 2009, 3:65–87. 36. Holtzendorff J, Partensky F, Mella D, Lennon JF, Hess WR, Garczarek L: Genome streamlining results in loss of robustness of the circadian clock in the marine cyanobacterium Prochlorococcus marinus PCC 9511. J Biol Rhythms 2008, 23:187–199.PubMed 37. Butala M, Zgur-Bertok D, Busby SJW: The bacterial LexA transcriptional repressor. Cell Mol Life Sci 2009, 66:82–93.PubMed 38. Golden SS: Timekeeping in bacteria: the cyanobacterial circadian clock. Curr Opin Microbiol 2003, 6:535–540.PubMed 39. Llabres M, Agusti S: Picophytoplankton cell death induced by UV radiation: Evidence for oceanic Atlantic communities.

Limnol Oceanogr Resveratrol 2006, 51:21–29. 40. Sommaruga R, Hofer JS, Alonso Saez L, Gasol JA: Differential sunlight sensitivity of picophytoplankton from surface Mediterranean coastal waters. Appl Environ Microbiol 2005, 71:2154–2157.PubMed 41. Dufresne A, Garczarek L, Partensky F: Accelerated evolution associated with genome reduction in a free-living prokaryote. Genome Biol 2005, 6:R14.PubMed 42. Binder BJ, Chisholm SW, Olson RJ, Frankel SL, Worden AZ: Dynamics of picophytoplankton, BIIB057 in vivo ultraphytoplankton and bacteria in the central equatorial Pacific. Deep Sea Res II 1996, 43:907–931. 43. Liu H, Campbell L, Landry MR, Nolla HA, Brown SL, Constantinou J: Prochlorococcus and Synechococcus growth rates and contributions to production in the Arabian Sea during the 1995 Southwest and Northeast monsoons. Deep Sea Res II 1998, 45:2327–2352. 44. Liu HB, Nolla HA, Campbell L: Prochlorococcus growth rate and contribution to primary production in the equatorial and subtropical North Pacific Ocean.