UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA
One species, two hemispheres: Antarctic and Arctic populations of ciliated protists belong to the same biological species - Microbes dwelling in oceans are of vital importance to the planet health, and their taxonomic, biological and ecological characterization is essential to better understand how...
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Online Access: | http://hdl.handle.net/11568/461873 |
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ftunivpisairis:oai:arpi.unipi.it:11568/461873 2024-04-14T08:04:06+00:00 UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA DI GIUSEPPE, GRAZIANO DINI, FERNANDO FRANCESCO PAOLO FRONTINI ADRIANA VALLESI PIERANGELO LUPORINI DI GIUSEPPE, Graziano FRANCESCO PAOLO, Frontini Adriana, Vallesi Pierangelo, Luporini Dini, Fernando 2012 http://hdl.handle.net/11568/461873 eng eng volume:119 firstpage:69 lastpage:74 numberofpages:6 journal:ATTI DELLA SOCIETÀ TOSCANA DI SCIENZE NATURALI RESIDENTE IN PISA. MEMORIE. SERIE B http://hdl.handle.net/11568/461873 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84928016005 info:eu-repo/semantics/article 2012 ftunivpisairis 2024-03-21T18:42:57Z One species, two hemispheres: Antarctic and Arctic populations of ciliated protists belong to the same biological species - Microbes dwelling in oceans are of vital importance to the planet health, and their taxonomic, biological and ecological characterization is essential to better understand how the oceans are changing and how the ocean life is adapting to changes. Among a vast collection of strains of the ciliated protist, Euplotes, isolated from sediments of coastal waters in Terra Nova Bay (Antarctica), Tierra del Fuego, Greenland and Svalbard Islands, we first identified a complex of twenty strains morphologically and genetically representative of E. nobilii. These strains were then analyzed for their mating and breeding interactions and found to represent also the same biological species. Mating pairs were isolated from Antarctic and Arctic strain combinations and shown to be fully capable of completing inter- partner gene exchange and generating viable offspring. From the determination of nuclear gene sequences coding for 18S ribosomal RNA it was lastly possible to identify two Arctic strains characterized by sequence motifs specific of the Antarctic strains, thus implying that the E. nobilii populations rely on an effective inter-polar dispersion through the cold Oceanic deep currents to remain genetically connected. Article in Journal/Newspaper Antarc* Antarctic Antarctica antartic* Arctic artiche Greenland Svalbard Tierra del Fuego ARPI - Archivio della Ricerca dell'Università di Pisa Arctic Antarctic The Antarctic Svalbard Terra Nova Bay Greenland |
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Open Polar |
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ARPI - Archivio della Ricerca dell'Università di Pisa |
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ftunivpisairis |
language |
English |
description |
One species, two hemispheres: Antarctic and Arctic populations of ciliated protists belong to the same biological species - Microbes dwelling in oceans are of vital importance to the planet health, and their taxonomic, biological and ecological characterization is essential to better understand how the oceans are changing and how the ocean life is adapting to changes. Among a vast collection of strains of the ciliated protist, Euplotes, isolated from sediments of coastal waters in Terra Nova Bay (Antarctica), Tierra del Fuego, Greenland and Svalbard Islands, we first identified a complex of twenty strains morphologically and genetically representative of E. nobilii. These strains were then analyzed for their mating and breeding interactions and found to represent also the same biological species. Mating pairs were isolated from Antarctic and Arctic strain combinations and shown to be fully capable of completing inter- partner gene exchange and generating viable offspring. From the determination of nuclear gene sequences coding for 18S ribosomal RNA it was lastly possible to identify two Arctic strains characterized by sequence motifs specific of the Antarctic strains, thus implying that the E. nobilii populations rely on an effective inter-polar dispersion through the cold Oceanic deep currents to remain genetically connected. |
author2 |
DI GIUSEPPE, Graziano FRANCESCO PAOLO, Frontini Adriana, Vallesi Pierangelo, Luporini Dini, Fernando |
format |
Article in Journal/Newspaper |
author |
DI GIUSEPPE, GRAZIANO DINI, FERNANDO FRANCESCO PAOLO FRONTINI ADRIANA VALLESI PIERANGELO LUPORINI |
spellingShingle |
DI GIUSEPPE, GRAZIANO DINI, FERNANDO FRANCESCO PAOLO FRONTINI ADRIANA VALLESI PIERANGELO LUPORINI UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
author_facet |
DI GIUSEPPE, GRAZIANO DINI, FERNANDO FRANCESCO PAOLO FRONTINI ADRIANA VALLESI PIERANGELO LUPORINI |
author_sort |
DI GIUSEPPE, GRAZIANO |
title |
UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
title_short |
UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
title_full |
UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
title_fullStr |
UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
title_full_unstemmed |
UNA SPECIE, DUE EMISFERI: POPOLAZIONI ANTARTICHE E ARTICHE DI PROTISTI CILIATI APPARTENGONO ALLA STESSA SPECIE BIOLOGICA |
title_sort |
una specie, due emisferi: popolazioni antartiche e artiche di protisti ciliati appartengono alla stessa specie biologica |
publishDate |
2012 |
url |
http://hdl.handle.net/11568/461873 |
geographic |
Arctic Antarctic The Antarctic Svalbard Terra Nova Bay Greenland |
geographic_facet |
Arctic Antarctic The Antarctic Svalbard Terra Nova Bay Greenland |
genre |
Antarc* Antarctic Antarctica antartic* Arctic artiche Greenland Svalbard Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctica antartic* Arctic artiche Greenland Svalbard Tierra del Fuego |
op_relation |
volume:119 firstpage:69 lastpage:74 numberofpages:6 journal:ATTI DELLA SOCIETÀ TOSCANA DI SCIENZE NATURALI RESIDENTE IN PISA. MEMORIE. SERIE B http://hdl.handle.net/11568/461873 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84928016005 |
_version_ |
1796300486839631872 |