Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach
Organic matter consumption and decomposition were studied in four experimental systems, having collected different organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main feat...
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Online Access: | https://hdl.handle.net/11567/1103375 https://doi.org/10.1007/s003000050316 |
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ftunivgenova:oai:iris.unige.it:11567/1103375 2024-04-14T08:02:37+00:00 Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach Misic C. Povero P. Fabiano M. Misic, C. Povero, P. Fabiano, M. 1998 STAMPA https://hdl.handle.net/11567/1103375 https://doi.org/10.1007/s003000050316 eng eng SPRINGER place:233 SPRING ST, NEW YORK, NY 10013 USA info:eu-repo/semantics/altIdentifier/wos/WOS:000077363400001 volume:20 firstpage:367 lastpage:376 numberofpages:10 journal:POLAR BIOLOGY https://hdl.handle.net/11567/1103375 doi:10.1007/s003000050316 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0032405696 info:eu-repo/semantics/article 1998 ftunivgenova https://doi.org/10.1007/s003000050316 2024-03-21T02:21:29Z Organic matter consumption and decomposition were studied in four experimental systems, having collected different organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main features of each phenomenon could be focused on. Through the strict relationship between each experimental system and natural conditions shown by organic matter assessment, ectoenzymatic activity trends and their relation with Antarctic water substrates could be described. Through ice melting the water column becomes rich in large pools of substrates, as well as enzyme-producing micro-organisms, capable of quick development. The quantitative predominance of leucine-aminopeptidase throughout the year is well known, but its relative importance seems to decrease when, owing to production events, the environment is enriched with autotrophic- and heterotrophic-derived substances, leading to glycolytic enzymes expression. Thus, ectoenzymatic activity is supposed to be one of the factors responsible for organic matter variations, showing quantitative and qualitative changes depending on substrate availability. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi di Genova: CINECA IRIS Antarctic Ross Sea Polar Biology 20 6 367 376 |
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Open Polar |
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Università degli Studi di Genova: CINECA IRIS |
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ftunivgenova |
language |
English |
description |
Organic matter consumption and decomposition were studied in four experimental systems, having collected different organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main features of each phenomenon could be focused on. Through the strict relationship between each experimental system and natural conditions shown by organic matter assessment, ectoenzymatic activity trends and their relation with Antarctic water substrates could be described. Through ice melting the water column becomes rich in large pools of substrates, as well as enzyme-producing micro-organisms, capable of quick development. The quantitative predominance of leucine-aminopeptidase throughout the year is well known, but its relative importance seems to decrease when, owing to production events, the environment is enriched with autotrophic- and heterotrophic-derived substances, leading to glycolytic enzymes expression. Thus, ectoenzymatic activity is supposed to be one of the factors responsible for organic matter variations, showing quantitative and qualitative changes depending on substrate availability. |
author2 |
Misic, C. Povero, P. Fabiano, M. |
format |
Article in Journal/Newspaper |
author |
Misic C. Povero P. Fabiano M. |
spellingShingle |
Misic C. Povero P. Fabiano M. Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
author_facet |
Misic C. Povero P. Fabiano M. |
author_sort |
Misic C. |
title |
Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
title_short |
Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
title_full |
Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
title_fullStr |
Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
title_full_unstemmed |
Relationship between ectoenzymatic activity and availability of organic substrates (Ross Sea, Antarctica): An experimental approach |
title_sort |
relationship between ectoenzymatic activity and availability of organic substrates (ross sea, antarctica): an experimental approach |
publisher |
SPRINGER |
publishDate |
1998 |
url |
https://hdl.handle.net/11567/1103375 https://doi.org/10.1007/s003000050316 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000077363400001 volume:20 firstpage:367 lastpage:376 numberofpages:10 journal:POLAR BIOLOGY https://hdl.handle.net/11567/1103375 doi:10.1007/s003000050316 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0032405696 |
op_doi |
https://doi.org/10.1007/s003000050316 |
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Polar Biology |
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20 |
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6 |
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367 |
op_container_end_page |
376 |
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1796316173369868288 |