Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | The alien species Caulerpa cylindracea and its associated bacteria in the Mediterranean Sea |
| Abstract | Although several studies have investigated bacterial-algal interactions, the bacterial component has often not been identified, and the ecological role of bacterial-algal associations is still unclear. In the present study two different approaches (molecular and culture) have been used to characterize the bacterial community associated with the invasive alga Caulerpa cylindracea (Sonder) over time, in a coastal area of the Mediterranean basin. C. cylindracea is an invasive macroalga in the Mediterranean Sea, able to colonize several types of substrates. Traditional culture-based and PCR-SSCP methods have been used to analyze the bacterial community. Molecular traces of Gammaproteobacteria belonging to the genera Shewanella and Vibrio have been found by both approaches on the surface of C. cylindracea consistently in time, along with those of an unknown species belonging to the Rhodobacteraceae family. Other taxa belonging to Bacillus, Pseudoalteromonas, Tropicibacter, Photobacterium, Exiguobacterium, Kocuria, Ruegeria, and Marinobacter genera have been discovered by culture-based approach. PCR-SSCP method has shown traces of an unknown species of the Bacteroidetes phylum and the Granulosicoccus genus. Our results suggest that C. cylindracea hosts a bacterial assemblage scarcely variable with time. Further studies are needed to clarify the nature of this alga-bacteria association and the potential role in the spreading of this alga using a holistic view considering the seaweed with associated bacteria as an essentially unique meta-organism. |
| Source | Marine biology (Berl.) 163 (1) |
| Keywords | PELTATA COMPLEX CAULERPACEAE; RACEMOSA VAR. CYLINDRACEA; RIBOSOMAL-RNA SEQUENCES; ROSEA FLUGGE 1886; SP-NOV.; PHYLOGENETIC ANALYSIS; TIDAL FLAT; MARINE MACROALGAE; VIBRIO-NEPTUNIUS; CLADE BACTERIA |
| Journal | Marine biology (Berl.) |
| Editor | Springer, Heidelberg ;, Germania |
| Year | 2016 |
| Type | Articolo in rivista |
| DOI | 10.1007/s00227-015-2775-9 |
| Authors | Rizzo, Lucia; Fraschetti, Simonetta; Alifano, Pietro; Pizzolante, Graziano; Stabili, Loredana |
| Text | 360940 2016 10.1007/s00227 015 2775 9 ISI Web of Science WOS 000369243700011 PELTATA COMPLEX CAULERPACEAE; RACEMOSA VAR. CYLINDRACEA; RIBOSOMAL RNA SEQUENCES; ROSEA FLUGGE 1886; SP NOV.; PHYLOGENETIC ANALYSIS; TIDAL FLAT; MARINE MACROALGAE; VIBRIO NEPTUNIUS; CLADE BACTERIA The alien species Caulerpa cylindracea and its associated bacteria in the Mediterranean Sea Rizzo, Lucia; Fraschetti, Simonetta; Alifano, Pietro; Pizzolante, Graziano; Stabili, Loredana Univ Salento; Univ Ca Foscari Venezia; CNR UOS Taranto Istituto Ambiente Marino Costiero Although several studies have investigated bacterial algal interactions, the bacterial component has often not been identified, and the ecological role of bacterial algal associations is still unclear. In the present study two different approaches molecular and culture have been used to characterize the bacterial community associated with the invasive alga Caulerpa cylindracea Sonder over time, in a coastal area of the Mediterranean basin. C. cylindracea is an invasive macroalga in the Mediterranean Sea, able to colonize several types of substrates. Traditional culture based and PCR SSCP methods have been used to analyze the bacterial community. Molecular traces of Gammaproteobacteria belonging to the genera Shewanella and Vibrio have been found by both approaches on the surface of C. cylindracea consistently in time, along with those of an unknown species belonging to the Rhodobacteraceae family. Other taxa belonging to Bacillus, Pseudoalteromonas, Tropicibacter, Photobacterium, Exiguobacterium, Kocuria, Ruegeria, and Marinobacter genera have been discovered by culture based approach. PCR SSCP method has shown traces of an unknown species of the Bacteroidetes phylum and the Granulosicoccus genus. Our results suggest that C. cylindracea hosts a bacterial assemblage scarcely variable with time. Further studies are needed to clarify the nature of this alga bacteria association and the potential role in the spreading of this alga using a holistic view considering the seaweed with associated bacteria as an essentially unique meta organism. 163 Published version Articolo in rivista Springer 0025 3162 Marine biology Berl. Marine biology Berl. Mar. biol. Berl. Marine biology. Berl. Marine biology Berlin. Print Berl. loredana.stabili STABILI LOREDANA lucia.rizzo RIZZO LUCIA TA.P04.029.001 Estrazione di sostanze attive da organismi marini e valutazione delle risposte alla esposizione di contaminanti di tipo chimico sugli esseri viventi DTA.AD005.084.001 Utilizzo di biomasse marine |