Aarhus University Seal / Aarhus Universitets segl

Bo Barker Jørgensen

Origin, dynamics, and implications of extracellular DNA pools in marine sediments

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Origin, dynamics, and implications of extracellular DNA pools in marine sediments. / Torti, Andrea; Lever, Mark Alexander; Jørgensen, Bo Barker.

In: Marine Genomics, Vol. 24, No. 3, 06.10.2015, p. 185-196.

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@article{94c85061f0424803bfa5e5f2dfafecf3,
title = "Origin, dynamics, and implications of extracellular DNA pools in marine sediments",
abstract = "In marine sediments, DNA occurs both inside and outside living organisms. DNA not enclosed in living cells may account for the largest fraction of total DNA, and include molecules locked within dead cells, organic and inorganic aggregates, adsorbed onto mineral matrices, and viral DNA. This DNA comprises genetic material released in situ from sediment microbial communities, as well as DNA of pelagic and terrestrial origin deposited to the seafloor. DNA not enclosed in living cells undermines the assumption of a direct link between the overall DNA pool and the local, currently living microbial assemblages, in terms of both microbial cell abundance and diversity. At the same time, the extracellular DNA may provide an integrated view of the biodiversity and ecological processes occurring on land, in marine water columns, and sediments themselves, thereby acting as an archive of genetic information which can be used to reconstruct past changes in source environments. In this review, we identify and discuss DNA pools in marine sediments, with special focus on DNA not enclosed in living cells, its origin, dynamics, and ecological and methodological implications. Achievements in deciphering the genetic information held within each DNA pool are presented along with still-standing challenges and major gaps in current knowledge.",
author = "Andrea Torti and Lever, {Mark Alexander} and J{\o}rgensen, {Bo Barker}",
note = "Copyright {\textcopyright} 2015 The Authors. Published by Elsevier B.V. All rights reserved.",
year = "2015",
month = oct,
day = "6",
doi = "10.1016/j.margen.2015.08.007",
language = "English",
volume = "24",
pages = "185--196",
journal = "Marine Genomics",
issn = "1874-7787",
publisher = "Elsevier Science Publishers B. V.",
number = "3",

}

RIS

TY - JOUR

T1 - Origin, dynamics, and implications of extracellular DNA pools in marine sediments

AU - Torti, Andrea

AU - Lever, Mark Alexander

AU - Jørgensen, Bo Barker

N1 - Copyright © 2015 The Authors. Published by Elsevier B.V. All rights reserved.

PY - 2015/10/6

Y1 - 2015/10/6

N2 - In marine sediments, DNA occurs both inside and outside living organisms. DNA not enclosed in living cells may account for the largest fraction of total DNA, and include molecules locked within dead cells, organic and inorganic aggregates, adsorbed onto mineral matrices, and viral DNA. This DNA comprises genetic material released in situ from sediment microbial communities, as well as DNA of pelagic and terrestrial origin deposited to the seafloor. DNA not enclosed in living cells undermines the assumption of a direct link between the overall DNA pool and the local, currently living microbial assemblages, in terms of both microbial cell abundance and diversity. At the same time, the extracellular DNA may provide an integrated view of the biodiversity and ecological processes occurring on land, in marine water columns, and sediments themselves, thereby acting as an archive of genetic information which can be used to reconstruct past changes in source environments. In this review, we identify and discuss DNA pools in marine sediments, with special focus on DNA not enclosed in living cells, its origin, dynamics, and ecological and methodological implications. Achievements in deciphering the genetic information held within each DNA pool are presented along with still-standing challenges and major gaps in current knowledge.

AB - In marine sediments, DNA occurs both inside and outside living organisms. DNA not enclosed in living cells may account for the largest fraction of total DNA, and include molecules locked within dead cells, organic and inorganic aggregates, adsorbed onto mineral matrices, and viral DNA. This DNA comprises genetic material released in situ from sediment microbial communities, as well as DNA of pelagic and terrestrial origin deposited to the seafloor. DNA not enclosed in living cells undermines the assumption of a direct link between the overall DNA pool and the local, currently living microbial assemblages, in terms of both microbial cell abundance and diversity. At the same time, the extracellular DNA may provide an integrated view of the biodiversity and ecological processes occurring on land, in marine water columns, and sediments themselves, thereby acting as an archive of genetic information which can be used to reconstruct past changes in source environments. In this review, we identify and discuss DNA pools in marine sediments, with special focus on DNA not enclosed in living cells, its origin, dynamics, and ecological and methodological implications. Achievements in deciphering the genetic information held within each DNA pool are presented along with still-standing challenges and major gaps in current knowledge.

U2 - 10.1016/j.margen.2015.08.007

DO - 10.1016/j.margen.2015.08.007

M3 - Journal article

C2 - 26452301

VL - 24

SP - 185

EP - 196

JO - Marine Genomics

JF - Marine Genomics

SN - 1874-7787

IS - 3

ER -