1
|
Kinetid in larval cells of Spongillida (Porifera: Demospongiae): tracing the ancestral traits. ORG DIVERS EVOL 2020. [DOI: 10.1007/s13127-020-00460-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
2
|
Sokolova AM, Pozdnyakov IR, Ereskovsky AV, Karpov SA. Kinetid structure in larval and adult stages of the demosponges Haliclona aquaeductus (Haplosclerida) and Halichondria panicea (Suberitida). ZOOMORPHOLOGY 2019. [DOI: 10.1007/s00435-019-00437-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
3
|
Aguilar-Camacho JM, McCormack GP. Silicatein expression in Haliclona indistincta (Phylum Porifera, Order Haplosclerida) at different developmental stages. Dev Genes Evol 2019; 229:35-41. [PMID: 30756180 DOI: 10.1007/s00427-019-00627-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/28/2019] [Indexed: 01/30/2023]
Abstract
Silicatein is the main protein responsible for the formation of spicules, tiny structures that constitute the silica skeleton of marine demosponges (Phylum Porifera). A unique innovation in Porifera that evolved from the cathepsin L family of proteins, it has been reported that two amino acids (S and H) are necessary to form the catalytic triad (SHN) to enable silica condensation. However, a diversity of silicatein sequence variants has since been reported with a variable pattern of presence/absence across sponge groups. Variants containing CHN or C/SQN at the active site appear more common in sponges from the Haplosclerida. Here, we report the expression levels of five silicatein variants through different developmental stages in the haplosclerid Haliclona indistincta. All five silicatein variants were expressed at low levels in the free-swimming larvae, which lack spicules and expression significantly increased at the two developmental phases in which spicules were visible. At these two phases, silicateins of CHN and C/SQN types were much more highly expressed than the SHN type indicating a possible ability of active sites with these alternative amino acids to condense silica and a more complex evolutionary story for spicule formation in marine demosponges than previously understood.
Collapse
Affiliation(s)
- Jose Maria Aguilar-Camacho
- Zoology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - Grace P McCormack
- Zoology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland.
| |
Collapse
|
4
|
Koutsouveli V, Taboada S, Moles J, Cristobo J, Ríos P, Bertran A, Solà J, Avila C, Riesgo A. Insights into the reproduction of some Antarctic dendroceratid, poecilosclerid, and haplosclerid demosponges. PLoS One 2018; 13:e0192267. [PMID: 29420669 PMCID: PMC5805295 DOI: 10.1371/journal.pone.0192267] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 01/18/2018] [Indexed: 01/26/2023] Open
Abstract
Sponges are a dominant element of the Antarctic benthic communities, posing both high species richness and large population densities. Despite their importance in Antarctic ecosystems, very little is known about their reproductive patterns and strategies. In our study, we surveyed the tissue of six different species for reproductive elements, namely, Dendrilla antarctica Topsent, 1905 (order Dendroceratida), Phorbas areolatus (Thiele, 1905), Kirkpatrickia variolosa (Kirkpatrick, 1907), and Isodictya kerguelenensis (Ridley & Dendy, 1886) (order Poecilosclerida), and Hemigellius pilosus (Kirkpatrick, 1907) and Haliclona penicillata (Topsent, 1908) (Haplosclerida). Samples of these six species containing various reproductive elements were collected in Deception Island and were processed for both light and transmission electron microscopy (TEM). Even though we were not able to monitor the entire reproductive cycle, due to time and meteorological conditions, we report important aspects of the reproduction of these species. This includes oocyte and embryo morphology and cell ultrastructure, follicular structures and nurse cell activity, as well as vitellogenesis. All species were brooding their embryos within their mesohyl. Both oocytes and embryos were registered in the majority of the studied species, and a single sperm cell being carried to an egg for fertilization was observed in H. penicillata. While the reproductive periods of all species coincided temporally, some of them seemed to rely on a single spawning event, this being suggested by the synchronic oogenesis and embryogenesis occurrence of D. antarctica, P. areolatus and I. kerguelenensis. In contrast, K. variolosa had an asynchronous embryo development, which suggests several larval release events. Our results suggest that differences in the reproductive strategies and morphological traits might succeed in the coexistence of these species at the same habitat avoiding the direct competition between them.
Collapse
Affiliation(s)
- Vasiliki Koutsouveli
- Department of Life Sciences (Invertebrate Division), The Natural History Museum of London, London, United Kingdom
| | - Sergi Taboada
- Department of Life Sciences (Invertebrate Division), The Natural History Museum of London, London, United Kingdom
| | - Juan Moles
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, and IRBio (Biodiversity Research Institute), University of Barcelona, Barcelona, Catalonia, Spain
| | | | - Pilar Ríos
- Instituto Español de Oceanografía (IEO), Gijón, Spain
| | - Andrea Bertran
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, and IRBio (Biodiversity Research Institute), University of Barcelona, Barcelona, Catalonia, Spain
| | - Joan Solà
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, and IRBio (Biodiversity Research Institute), University of Barcelona, Barcelona, Catalonia, Spain
| | - Conxita Avila
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, and IRBio (Biodiversity Research Institute), University of Barcelona, Barcelona, Catalonia, Spain
| | - Ana Riesgo
- Department of Life Sciences (Invertebrate Division), The Natural History Museum of London, London, United Kingdom
- * E-mail:
| |
Collapse
|
5
|
Moitinho-Silva L, Steinert G, Nielsen S, Hardoim CCP, Wu YC, McCormack GP, López-Legentil S, Marchant R, Webster N, Thomas T, Hentschel U. Predicting the HMA-LMA Status in Marine Sponges by Machine Learning. Front Microbiol 2017; 8:752. [PMID: 28533766 PMCID: PMC5421222 DOI: 10.3389/fmicb.2017.00752] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/12/2017] [Indexed: 11/18/2022] Open
Abstract
The dichotomy between high microbial abundance (HMA) and low microbial abundance (LMA) sponges has been observed in sponge-microbe symbiosis, although the extent of this pattern remains poorly unknown. We characterized the differences between the microbiomes of HMA (n = 19) and LMA (n = 17) sponges (575 specimens) present in the Sponge Microbiome Project. HMA sponges were associated with richer and more diverse microbiomes than LMA sponges, as indicated by the comparison of alpha diversity metrics. Microbial community structures differed between HMA and LMA sponges considering Operational Taxonomic Units (OTU) abundances and across microbial taxonomic levels, from phylum to species. The largest proportion of microbiome variation was explained by the host identity. Several phyla, classes, and OTUs were found differentially abundant in either group, which were considered “HMA indicators” and “LMA indicators.” Machine learning algorithms (classifiers) were trained to predict the HMA-LMA status of sponges. Among nine different classifiers, higher performances were achieved by Random Forest trained with phylum and class abundances. Random Forest with optimized parameters predicted the HMA-LMA status of additional 135 sponge species (1,232 specimens) without a priori knowledge. These sponges were grouped in four clusters, from which the largest two were composed of species consistently predicted as HMA (n = 44) and LMA (n = 74). In summary, our analyses shown distinct features of the microbial communities associated with HMA and LMA sponges. The prediction of the HMA-LMA status based on the microbiome profiles of sponges demonstrates the application of machine learning to explore patterns of host-associated microbial communities.
Collapse
Affiliation(s)
- Lucas Moitinho-Silva
- Centre for Marine Bio-Innovation, University of New South WalesSydney, NSW, Australia.,School of Biological, Earth and Environmental Sciences, University of New South WalesSydney, NSW, Australia
| | - Georg Steinert
- Laboratory of Microbiology, Wageningen UniversityWageningen, Netherlands
| | - Shaun Nielsen
- Centre for Marine Bio-Innovation, University of New South WalesSydney, NSW, Australia.,School of Biological, Earth and Environmental Sciences, University of New South WalesSydney, NSW, Australia
| | - Cristiane C P Hardoim
- Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Yu-Chen Wu
- RD3 Marine Microbiology, GEOMAR Helmholtz Centre for Ocean Research Kiel and Christian-Albrechts UniversityKiel, Germany
| | - Grace P McCormack
- Zoology, Ryan Institute, School of Natural Sciences, National University of Ireland GalwayGalway, Ireland
| | - Susanna López-Legentil
- Department of Biology and Marine Biology, and Center for Marine Science, University of North CarolinaWilmington, NC, USA
| | - Roman Marchant
- Centre for Translational Data Science, School of Information Technologies, University of SydneySydney, NSW, Australia
| | - Nicole Webster
- Australian Institute of Marine ScienceTownsville, QLD, Australia.,Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, University of QueenslandSt. Lucia, QLD, Australia
| | - Torsten Thomas
- Centre for Marine Bio-Innovation, University of New South WalesSydney, NSW, Australia.,School of Biological, Earth and Environmental Sciences, University of New South WalesSydney, NSW, Australia
| | - Ute Hentschel
- RD3 Marine Microbiology, GEOMAR Helmholtz Centre for Ocean Research Kiel and Christian-Albrechts UniversityKiel, Germany
| |
Collapse
|