Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges
Dissolved silicon (DSi) is biologically processed to produce siliceous skeletons by a variety of organisms including radiolarians, silicoflagellates, choanoflagellates, plants, diatoms and some animals. In the photic ocean, diatoms are dominant consumers over competing other silicifiers. In Antarcti...
Published in: | Zoological Journal of the Linnean Society |
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Language: | English |
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Oxford University Press
2021
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Online Access: | http://hdl.handle.net/10261/222294 |
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ftcsic:oai:digital.csic.es:10261/222294 2024-02-11T09:56:57+01:00 Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges Riesgo Gil, Ana Taboada, S. Kenny, Nathan J. Santodomingo, Nadia Moles, Juan Leiva, Carlos Cox, Eileen Àvila, Conxita Cardona, Luis Maldonado, Manuel 2021 http://hdl.handle.net/10261/222294 en eng Oxford University Press https://doi.org/10.1093/zoolinnean/zlaa058 Sí Zoological Journal of the Linnean Society 192(2) : 259-276 (2021) 0024-4082 http://hdl.handle.net/10261/222294 1096-3642 none Siliceous skeletons Southern Ocean Antarctica Biogenic silica Biosilicification Porifera artículo http://purl.org/coar/resource_type/c_6501 2021 ftcsic https://doi.org/10.1093/zoolinnean/zlaa058 2024-01-16T10:59:08Z Dissolved silicon (DSi) is biologically processed to produce siliceous skeletons by a variety of organisms including radiolarians, silicoflagellates, choanoflagellates, plants, diatoms and some animals. In the photic ocean, diatoms are dominant consumers over competing other silicifiers. In Antarctica, where DSi is not particularly limiting, diatoms and sponges coexist in high abundances. Interestingly, diatom ingestion by sponges is a regular feeding strategy there. Although it was known that the diatom organic nutrients are readily metabolized by the sponges, what happened to the inorganic diatom silica skeleton remained unexplored. Here, we have conducted a multi-analytical approach to investigate the processing of diatom silica and whether it is reconverted into sponge silica. We have documented widespread diatom consumption by several demosponges, identifying storage vesicles for the diatom-derived silica by electron microscopy and microanalysis. Diatom-consuming sponges showed upregulation of silicatein and silicase genes, which in addition to the δ 30Si values of their silica, supports that the sponges are converting the ingested diatom silica into sponge silica without much further Si fractionation. Our multidisciplinary approach suggests that the reutilization of diatom silica by sponges is a common feature among Antarctic sponges, which should be further investigated in other latitudes and in other silicifiers. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Digital.CSIC (Spanish National Research Council) Antarctic Southern Ocean Zoological Journal of the Linnean Society 192 2 259 276 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Siliceous skeletons Southern Ocean Antarctica Biogenic silica Biosilicification Porifera |
spellingShingle |
Siliceous skeletons Southern Ocean Antarctica Biogenic silica Biosilicification Porifera Riesgo Gil, Ana Taboada, S. Kenny, Nathan J. Santodomingo, Nadia Moles, Juan Leiva, Carlos Cox, Eileen Àvila, Conxita Cardona, Luis Maldonado, Manuel Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
topic_facet |
Siliceous skeletons Southern Ocean Antarctica Biogenic silica Biosilicification Porifera |
description |
Dissolved silicon (DSi) is biologically processed to produce siliceous skeletons by a variety of organisms including radiolarians, silicoflagellates, choanoflagellates, plants, diatoms and some animals. In the photic ocean, diatoms are dominant consumers over competing other silicifiers. In Antarctica, where DSi is not particularly limiting, diatoms and sponges coexist in high abundances. Interestingly, diatom ingestion by sponges is a regular feeding strategy there. Although it was known that the diatom organic nutrients are readily metabolized by the sponges, what happened to the inorganic diatom silica skeleton remained unexplored. Here, we have conducted a multi-analytical approach to investigate the processing of diatom silica and whether it is reconverted into sponge silica. We have documented widespread diatom consumption by several demosponges, identifying storage vesicles for the diatom-derived silica by electron microscopy and microanalysis. Diatom-consuming sponges showed upregulation of silicatein and silicase genes, which in addition to the δ 30Si values of their silica, supports that the sponges are converting the ingested diatom silica into sponge silica without much further Si fractionation. Our multidisciplinary approach suggests that the reutilization of diatom silica by sponges is a common feature among Antarctic sponges, which should be further investigated in other latitudes and in other silicifiers. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Riesgo Gil, Ana Taboada, S. Kenny, Nathan J. Santodomingo, Nadia Moles, Juan Leiva, Carlos Cox, Eileen Àvila, Conxita Cardona, Luis Maldonado, Manuel |
author_facet |
Riesgo Gil, Ana Taboada, S. Kenny, Nathan J. Santodomingo, Nadia Moles, Juan Leiva, Carlos Cox, Eileen Àvila, Conxita Cardona, Luis Maldonado, Manuel |
author_sort |
Riesgo Gil, Ana |
title |
Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
title_short |
Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
title_full |
Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
title_fullStr |
Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
title_full_unstemmed |
Recycling resources: silica of diatom frustules as a source for spicule building in Antarctic siliceous demosponges |
title_sort |
recycling resources: silica of diatom frustules as a source for spicule building in antarctic siliceous demosponges |
publisher |
Oxford University Press |
publishDate |
2021 |
url |
http://hdl.handle.net/10261/222294 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
https://doi.org/10.1093/zoolinnean/zlaa058 Sí Zoological Journal of the Linnean Society 192(2) : 259-276 (2021) 0024-4082 http://hdl.handle.net/10261/222294 1096-3642 |
op_rights |
none |
op_doi |
https://doi.org/10.1093/zoolinnean/zlaa058 |
container_title |
Zoological Journal of the Linnean Society |
container_volume |
192 |
container_issue |
2 |
container_start_page |
259 |
op_container_end_page |
276 |
_version_ |
1790607323931082752 |