Identification and Distribution of Endosymbiotic Diatoms in Larger Foraminifera

Lee, John J.; McEnery, M. E.; Kuile, B. ter; Erez, Jonathan; Rockwell, Robert F.; Faber, Walter W.; Lagziel, Annie; Röttger, R.

doi:10.2307/1485677

Cited by 39 publications

(27 citation statements)

References 11 publications

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“…Both orders have been previously described as endosymbionts of Amphistegina sp. [24], further supporting the notion that individual A. lobifera can maintain partnership with multiple symbiont types [38]. Interestingly, A. lobifera collected from offshore reef sites showed a higher diversity of diatoms, suggesting that the clear, oligotrophic environment of the mid- and outer-shelf may allow for the colonisation of a broader array of photo-symbionts that benefit from more stable conditions of light, lower temperature fluctuations, and lower nutrients.…”

Section: Discussionmentioning

confidence: 57%

“…Flexibility in host-symbiont associations can be advantageous when environmental conditions change and is particularly important in the context of climate change, as host organisms that are flexible are able to form new symbioses that can be beneficial under new biotic and abiotic regimes [24, 25]. For example, molecular studies showed that the same species of LBF can host an extraordinary diversity of photo-symbiont types, up to 20 species of symbionts at any given time [24, 25]. Within-population symbiont polymorphism and mixed infections may be a mechanism by which foraminifera survive environmental fluctuations over time and colonise a wide range of habitats [26, 27].…”

Section: Introductionmentioning

confidence: 99%

“…The adaptability and symbiont flexibility of LBF is truly remarkable; not only are they able to acquire new symbionts if conditions change [24], but they can also shift their life history strategy from asexual division towards an increased dependence on sexual generations, ensuring horizontal transmission of symbionts [28]. In horizontal transmission, the host may acquire genetically diverse symbionts well suited for any given environment [29], which can then be perpetuated via vertical transmission through asexual reproduction [28].…”

Section: Introductionmentioning

confidence: 99%

“…These studies explored changes in microbial communities under controlled laboratory conditions [18–20] or reported preliminary characterisations of the bacterial microbiome [18]. Moreover, despite a substantial body of work on the description of eukaryotic photo-symbiont in LBF, these studies are all based in morphological features of the algal symbiont [11, 24, 25]. The aim of our study was to utilise next-generation sequencing to characterise the eukaryotic and prokaryotic microbiome of Amphistegina lobifera , which is a common LBF species in reef environments [34, 35], collected from different reef sites along a natural cross-shelf gradient of temperature and nutrients in the GBR.…”

Section: Introductionmentioning

confidence: 99%

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Symbiosis and microbiome flexibility in calcifying benthic foraminifera of the Great Barrier Reef

et al. 2017

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BackgroundSymbiosis is a phenomenon that allows organisms to colonise a wide range of environments and occupy a variety of ecological niches in marine environments. Large benthic foraminifera (LBF) are crucial marine calcifiers that rely on photo-endosymbionts for growth and calcification, yet the influence of environmental conditions in shaping their interactions with prokaryotic and eukaryotic associates is poorly known.ResultsHere, we used next-generation sequencing to identify eukaryotic photosynthesizing and prokaryotic microbes associated with the common LBF Amphistegina lobifera across a physio-chemical gradient on the Great Barrier Reef (GBR). We collected samples from three reef sites located in the inner-, mid- and outer-shelf regions of the northern section of the GBR. Results showed the consistent presence of Bacillaryophyta as the main eukaryotic taxa associated with A. lobifera across all reef sites analysed; however, the abundance and the diversity of prokaryotic organisms varied among reef sites. Inner-shelf specimens showed the highest diversity of prokaryote associates, with a total of 231 genotypes in their core microbiome. A total of 30 taxa were identified in the core microbiome across all reef sites. Within these taxa, Proteobacteria was the most abundant bacteria present. The presence of groups such as Actinobacteria was significantly correlated with inner-shelf populations, whereas the abundance of Bacteroidetes and Firmicutes was associated with A. lobifera collected from mid- and outer-shelf reef sites.ConclusionsWe found that benthic foraminifera form stable and persistent symbiosis with eukaryotic partners, but flexible and site-specific associations with prokaryotic microbes that likely influence the ecological success of these crucial calcifying organisms on the GBR.Electronic supplementary materialThe online version of this article (doi:10.1186/s40168-017-0257-7) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Symbiosis and microbiome flexibility in calcifying benthic foraminifera of the Great Barrier Reef

et al. 2017

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“…The diatom analysis revealed that there is diverse and rich community of diatoms around and near the springs. Many of the benthic foraminifer species feed on diatoms and it has been known that larger foraminifers, such as aphisteginids live together with endosymbiont diatoms (Lee et al, 1989), suggesting that the abundance of diatoms around the spring may serve as an important food source for Amphistegina lobifera Larsen. An increase is …”

Section: Foraminifer Assemblagementioning

confidence: 99%

Opinions and comments on the benthic foraminiferal assemblage observed around the mineral submarine spring in Kuşadası (Aydın, Turkey)

Yokeş

Merıç

Avşar

et al. 2014

Mar. Biodivers. Rec.

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Opinions and comments on the benthic foraminiferal assemblage observed around the mineral submarine spring in Kuşadası (Aydın, Turkey) mehmet baki yokes 1 , engin meric ‚ 2 , niyazi avs ‚ar 3 , i ‹pek barut 4 , seyfettin tas 4 , mustafa eryilmaz 5 , feyza dinc ‚er 6 and cu ¤ neyt bircan 7The aim of the study was to investigate the benthic foraminiferal fauna around the mineral water spring in Pamucak Cove, north-west Kuşadası (Aydın) and figure out the effects of the spring on the fauna. The spring was located 200 m off the coast at 12.4 m depth and its temperature was 19.68C. The study area was found to include a rich population of Red Sea originated Amphistegina lobifera, of which the distribution pattern is noteworthy. It is abundant in the centre of the spring and its close vicinity; its abundance decreases when getting away from the spring. It is more abundantly observed on the southern and western sides of the spring, whereas, it is outnumbered by Ammonia compacta and Elphidium crispum on the northern and eastern parts. The water currents around the spring were in north-south and north-west directions. The observed diverse diatom population around the spring constitutes the main food source and dispersal according to the currents may explain the reason for the abundance of the Amphistegina population on the southern and western sides of the study area. High abundances of A. lobifera have not yet been observed elsewhere in the Aegean Sea, although large populations of this species have been recorded on the south-west coasts of Turkey and in several stations on the south-east of Gokceada. Abundance of coloured individuals and Red Sea originated benthic species suggests the presence of special environmental as well as ecological conditions around the spring.

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Living Sands: Symbiosis between Foraminifera and Algae

Lee

Cellular Origin, Life in Extreme Habitats and Astrobiology

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Identification and Distribution of Endosymbiotic Diatoms in Larger Foraminifera

Cited by 39 publications

References 11 publications

Symbiosis and microbiome flexibility in calcifying benthic foraminifera of the Great Barrier Reef

Symbiosis and microbiome flexibility in calcifying benthic foraminifera of the Great Barrier Reef

Opinions and comments on the benthic foraminiferal assemblage observed around the mineral submarine spring in Kuşadası (Aydın, Turkey)

Living Sands: Symbiosis between Foraminifera and Algae

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