Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR (Comunicazione a convegno)

Type

• Comunicazione a convegno (Classe)
• Prodotto della ricerca (Classe)

Label

• Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR (Comunicazione a convegno) (literal)

Anno

• 2011-01-01T00:00:00+01:00 (literal)

Alternative label

• Cristiana Callieri; Roberto Bertoni; Andrea Lami (2011)
  Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR
  in ASLO: Congress of the Association for the Sciences of Limnology and Oceanography. Aquatic Sciences Meeting, San Juan, Puerto Rico, 13-18 febbraio 2011
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Cristiana Callieri; Roberto Bertoni; Andrea Lami (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• ID_PUMA:/cnr.ise/2011-A3-014Area di valutazione 04 - Scienze della Terra (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• CNR-ISE, Pallanza Verbania (literal)

Titolo

• Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR (literal)

Abstract

• UVR have different effects on prokaryotic cells as, for instance, filamentation and aggregation in bacteria. We studied the effect of UVR on microcolony formation in two freshwater picocyanobacterial strains from different ribotypes (Group B and Group I) and pigment composition (phycoerythrin, PE-rich and phycocyanin, PC-rich). The cultures were photoacclimated at low (LL, 10 µmol m-2 s-1) and medium (ML, 100 µmol m-2 s-1) light for two months and then exposed to UVR (Q-Panel) for 7 days. We observed the higher percentage of cells in microcolonies in PE-rich strain acclimated to LL and then exposed to UVR. Conversely, PE acclimated to ML and PC did not aggregate significantly. We identified and measured the specific carotenoids by HPLC at the different times of the experiment. We suggest that the induction of protective pigments during ML acclimation enables single-cell survival during UVR irradiation and that the strategy of microcolony formation is a protective response of LL acclimated cells. The extent to which the microcolony formation from single cell Synechococcus is related to pigment type, phylogenetic position or photoacclimation is discussed. (literal)

Prodotto di

• Ecologia teorica e applicata degli ecosistemi acquatici (TA.P04.016.004) (Modulo)
• Istituto per lo studio degli ecosistemi (ISE) (Istituto)

Autore CNR

• ROBERTO BERTONI (Unità di personale interno)
• ANDREA LAMI (Unità di personale interno)
• CRISTIANA CALLIERI (Persona)

Insieme di parole chiave

• Parole chiave di "Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ANDREA LAMI (Unità di personale interno)
• CRISTIANA CALLIERI (Persona)
• ROBERTO BERTONI (Unità di personale interno)

Prodotto

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Ecologia teorica e applicata degli ecosistemi acquatici (TA.P04.016.004) (Modulo)

Insieme di parole chiave di

• Parole chiave di "Microcolony formation from single-cell Synechococcus Strains: a protective strategy against UVR" (Insieme di parole chiave)