Nitrogen-cycling genes in oyster reefs and surrounding sediments: Relationships with environmental factors and respective nitrogen rates

Filippini, G; Bugnot, AB; Varkey, DR; Siboni, N; Ferguson, A; Gribben, PE; Erickson, K; Palmer, J; Dafforn, KA

Nitrogen-cycling genes in oyster reefs and surrounding sediments: Relationships with environmental factors and respective nitrogen rates

Filippini, G Bugnot, AB Varkey, DR Siboni, N

Ferguson, A Gribben, PE Erickson, K Palmer, J Dafforn, KA

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Publisher:: PERGAMON-ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Marine Pollution Bulletin, 2023, 197
Issue Date:: 2023-12-01

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Field	Value	Language
dc.contributor.author	Filippini, G
dc.contributor.author	Bugnot, AB
dc.contributor.author	Varkey, DR
dc.contributor.author	Siboni, N https://orcid.org/0000-0001-6082-0949
dc.contributor.author	Ferguson, A
dc.contributor.author	Gribben, PE
dc.contributor.author	Erickson, K
dc.contributor.author	Palmer, J
dc.contributor.author	Dafforn, KA
dc.date.accessioned	2024-03-28T01:23:09Z
dc.date.available	2024-03-28T01:23:09Z
dc.date.issued	2023-12-01
dc.identifier.citation	Marine Pollution Bulletin, 2023, 197
dc.identifier.issn	0025-326X
dc.identifier.issn	1879-3363
dc.identifier.uri	http://hdl.handle.net/10453/177313
dc.description.abstract	To investigate nitrogen (N) cycling in oyster reef habitats along the East coast of Australia, we assessed N-cycling gene abundances in oyster shell biofilms and surrounding sediments, and explored their correlation with environmental factors and respective N rates. We found higher abundances of the denitrification gene nosZII in oyster shell biofilms, while there were not significant differences in the denitrification genes nirS and nirK between oyster biofilms and sediments. Additionally, oyster shell biofilms had a lower (nirS + nirK)/nosZII ratio, indicating a greater capacity for N removal and limited nitrous oxide release compared to sediments. Abundance of nirS, nirK, and dissimilatory nitrate reduction to ammonium (nrfA) genes in sediments decreased with increasing content of organic material, suggesting the influence of large-scale environmental conditions. N-cycling gene abundances did not relate to N rates, emphasising the importance of investigating microbial genes to enhance our understanding of the N cycle in oyster reef habitats.
dc.language	English
dc.publisher	PERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartof	Marine Pollution Bulletin
dc.relation.isbasedon	10.1016/j.marpolbul.2023.115710
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Marine Biology & Hydrobiology
dc.title	Nitrogen-cycling genes in oyster reefs and surrounding sediments: Relationships with environmental factors and respective nitrogen rates
dc.type	Journal Article
utslib.citation.volume	197
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	open_access	*
dc.date.updated	2024-03-28T01:23:08Z
pubs.publication-status	Published
pubs.volume	197

Abstract:

To investigate nitrogen (N) cycling in oyster reef habitats along the East coast of Australia, we assessed N-cycling gene abundances in oyster shell biofilms and surrounding sediments, and explored their correlation with environmental factors and respective N rates. We found higher abundances of the denitrification gene nosZII in oyster shell biofilms, while there were not significant differences in the denitrification genes nirS and nirK between oyster biofilms and sediments. Additionally, oyster shell biofilms had a lower (nirS + nirK)/nosZII ratio, indicating a greater capacity for N removal and limited nitrous oxide release compared to sediments. Abundance of nirS, nirK, and dissimilatory nitrate reduction to ammonium (nrfA) genes in sediments decreased with increasing content of organic material, suggesting the influence of large-scale environmental conditions. N-cycling gene abundances did not relate to N rates, emphasising the importance of investigating microbial genes to enhance our understanding of the N cycle in oyster reef habitats.

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http://hdl.handle.net/10453/177313