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7 results for “Exaiptasia pallida”
FIG. 3 in Chemical communication in the symbiotic interaction between the anemone Exaiptasia diaphana (ex Aiptasia pallida) Rapp and the dinoflagellate Symbiodinium spp.
FIG. 3. — Iron (A), Manganese (B), Magnesium (C), Copper (D), Zinc (E) mean contents in bleached Exaiptasia diaphana Rapp samples. The error bars represent the standard deviation (n ≥ 3). Abbreviations: C, Aposymbiotic Exaiptasia samples exposed to an empty dialysis tube (control group); E, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing the holobionts; S, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing Symbiodinium cells.
FIG. 2 in Chemical communication in the symbiotic interaction between the anemone Exaiptasia diaphana (ex Aiptasia pallida) Rapp and the dinoflagellate Symbiodinium spp.
FIG. 2. — Carbon (A), Nitrogen (B), Phosphorus (C), Sulphur (D) mean contents in bleached Exaiptasia diaphana Rapp samples. The error bars represent the standard deviation (n ≥ 3). Abbreviations: C, Aposymbiotic Exaiptasia samples exposed to an empty dialysis tube (control group); E, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing the holobionts; S, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing Symbiodinium cells.
FIG. 1 in Chemical communication in the symbiotic interaction between the anemone Exaiptasia diaphana (ex Aiptasia pallida) Rapp and the dinoflagellate Symbiodinium spp.
FIG. 1. — Organic composition in bleached Exaiptasia diaphana Rapp samples. The error bars represent the standard deviation (n ≥ 3). Abbreviations: C, Aposymbiotic Exaiptasia samples exposed to an empty dialysis tube (control group); E, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing the holobionts; S, Aposymbiotic Exaiptasia samples exposed to a dialysis tube containing Symbiodinium cells.
Data from: Worldwide exploration of the microbiome harbored by the cnidarian model, Exaiptasia pallida (Agassiz in Verrill, 1864) indicates a lack of bacterial association specificity at a lower taxonomic rank
Examination of host-microbe interactions in early diverging metazoans, such as cnidarians, is of great interest from an evolutionary perspective to understand how host-microbial consortia have evolved. To address this problem, we analyzed whether the bacterial community associated with the cosmopolitan and model sea anemone Exaiptasia pallida shows specific patterns across worldwide populations ranging from the Caribbean Sea, and the Atlantic and Pacific oceans. By comparing sequences of the V1–V3 hypervariable regions of the bacterial 16S rRNA gene, we revealed that anemones host a complex and diverse microbial community. When examined at the phylum level, bacterial diversity and abundance associated with E. pallida are broadly conserved across geographic space with samples, containing largely Proteobacteria and Bacteroides. However, the species-level makeup within these phyla differs drastically across space suggesting a high-level core microbiome with local adaptation of the constituents. Indeed, no bacterial OTU was ubiquitously found in all anemones samples. We also revealed changes in the microbial community structure after rearing anemone specimens in captivity within a period of four months. Furthermore, the variation in bacterial community assemblages across geographical locations did not correlate with the composition of microalgal Symbiodinium symbionts. Our findings contrast with the postulation that cnidarian hosts might actively select and maintain species-specific microbial communities that could have resulted from an intimate co-evolution process. The fact that E. pallida is likely an introduced species in most sampled localities suggests that this microbial turnover is a relatively rapid process. Our findings suggest that environmental settings, not host specificity, seem to dictate bacterial community structure associated with this sea anemone. More than maintaining a specific composition of bacterial species some cnidarians associate with a wide range of bacterial species as long as they provide the same physiological benefits towards the maintenance of a healthy host. The examination of the previously uncharacterized bacterial community associated with the cnidarian sea anemone model E. pallida is the first global-scale study of its kind.
Data from: Worldwide exploration of the microbiome harbored by the cnidarian model, Exaiptasia pallida (Agassiz in Verrill, 1864) indicates a lack of bacterial association specificity at a lower taxonomic rank
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Comparison of gene expression in symbiotic and non-symbiotic cells of Exaiptasia pallida
GEO Series GSE140173. Exaiptasia diaphana. 16 samples. Type: Expression profiling by high throughput sequencing.
Comparison of gene expression in Exaiptasia pallida aposymbiotic cells and cells containing Microchloropsis gaditana
GEO Series GSE141133. Exaiptasia diaphana. 6 samples. Type: Expression profiling by high throughput sequencing.
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