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Título

Temporal stability of bacterial symbionts in a temperate ascidian

AutorLópez-Legentil, S.; Turon, Xavier ; Espluga, Roger; Erwin, Patrick M.
Palabras claveT-RFLP
16S rRNA
Tunicata
Symbiosis
Mediterranean Sea
Bacteria
Temporal
Didemnum
Fecha de publicación2015
EditorFrontiers Media
CitaciónFrontiers in Microbiology 6: 1022 (2015)
ResumenIn temperate seas, both bacterioplankton communities and invertebrate lifecycles follow a seasonal pattern. To investigate whether the bacterial community associated with the Mediterranean ascidian Didemnum fulgens exhibited similar variations, we monitored its bacterial community structure monthly for over a year using terminal restriction fragment length polymorphism and clone library analyses based on a nearly full length fragment of the 16SrRNA gene. D. fulgens harbored a bacterial consortium typical of ascidians, including numerous members of the phylum Proteobacteria, and a few members of the phyla Cyanobacteria and Acidobacteria. The overall bacterial community in D. fulgens had a distinct signature from the surrounding seawater and was stable overtime and across seasonal fluctuations in temperature. Bacterial symbionts were also observed around animal cells in the tunic of adult individuals and in the inner tunic of D. fulgens larvae by transmission electron microscopy. Our results suggest that, as seen for sponges and corals, some species of ascidians host stable and unique bacterial communities that are at least partially inherited by their progeny by vertical transmission.
Descripción11 páginas, 3 figuras, 2 tablas.
Versión del editorhttp://dx.doi.org/10.3389/fmicb.2015.01022
URIhttp://hdl.handle.net/10261/122708
DOI10.3389/fmicb.2015.01022
ISSN1664-302X
E-ISSN1664-302X
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