Genomic identification of the long-chain alkenone producer in freshwater Lake Toyoni, Japan: implications for temperature reconstructions

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Genomic identification of the long-chain alkenone producer in freshwater Lake Toyoni, Japan : implications for temperature reconstructions. / Plancq, Julien; McColl, Jill L.; Bendle, James A.; Seki, Osamu; Couto, Jillian M.; Henderson, Andrew C.G.; Yamashita, Youhei; Kawamura, Kimitaka; Toney, Jaime L.

In: Organic Geochemistry, Vol. 125, 01.11.2018, p. 189-195.

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Plancq, Julien ; McColl, Jill L. ; Bendle, James A. ; Seki, Osamu ; Couto, Jillian M. ; Henderson, Andrew C.G. ; Yamashita, Youhei ; Kawamura, Kimitaka ; Toney, Jaime L. / Genomic identification of the long-chain alkenone producer in freshwater Lake Toyoni, Japan : implications for temperature reconstructions. In: Organic Geochemistry. 2018 ; Vol. 125. pp. 189-195.

Bibtex

@article{46620e034e3d43c0b454061327685362,
title = "Genomic identification of the long-chain alkenone producer in freshwater Lake Toyoni, Japan: implications for temperature reconstructions",
abstract = "Identifying the lacustrine haptophyte species that produce long-chain alkenones (LCAs) is essential prior to down-core temperature reconstructions. Here, we investigated the identity of LCA-producing species from Lake Toyoni, Japan using 18S ribosomal DNA (rDNA) and organic geochemical analyses. The rDNA analyses identified eighteen operational taxonomic units (OTUs) of which only one fell within the haptophyte phylotype. This haptophyte belongs to the Group I phylotype, as supported by the LCA distribution found in surface and down-core sediments, and is closely related to a haptophyte found in Lake BrayaS{\o} (Greenland). The inferred temperature using the Greenland calibration is very close to the Lake Toyoni surface temperature recorded during the spring/early summer season, when the LCA-producing haptophyte is likely to bloom. We therefore suggest that the temperature calibration from the Lake BrayaS{\o} Greenland is a suitable calibration for down-core temperature reconstructions at Lake Toyoni.",
keywords = "Alkenones, Environmental genomic, Haptophyte, Lake, Temperature",
author = "Julien Plancq and McColl, {Jill L.} and Bendle, {James A.} and Osamu Seki and Couto, {Jillian M.} and Henderson, {Andrew C.G.} and Youhei Yamashita and Kimitaka Kawamura and Toney, {Jaime L.}",
year = "2018",
month = nov,
day = "1",
doi = "10.1016/j.orggeochem.2018.09.011",
language = "English",
volume = "125",
pages = "189--195",
journal = "Organic Geochemistry",
issn = "0146-6380",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Genomic identification of the long-chain alkenone producer in freshwater Lake Toyoni, Japan

T2 - implications for temperature reconstructions

AU - Plancq, Julien

AU - McColl, Jill L.

AU - Bendle, James A.

AU - Seki, Osamu

AU - Couto, Jillian M.

AU - Henderson, Andrew C.G.

AU - Yamashita, Youhei

AU - Kawamura, Kimitaka

AU - Toney, Jaime L.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Identifying the lacustrine haptophyte species that produce long-chain alkenones (LCAs) is essential prior to down-core temperature reconstructions. Here, we investigated the identity of LCA-producing species from Lake Toyoni, Japan using 18S ribosomal DNA (rDNA) and organic geochemical analyses. The rDNA analyses identified eighteen operational taxonomic units (OTUs) of which only one fell within the haptophyte phylotype. This haptophyte belongs to the Group I phylotype, as supported by the LCA distribution found in surface and down-core sediments, and is closely related to a haptophyte found in Lake BrayaSø (Greenland). The inferred temperature using the Greenland calibration is very close to the Lake Toyoni surface temperature recorded during the spring/early summer season, when the LCA-producing haptophyte is likely to bloom. We therefore suggest that the temperature calibration from the Lake BrayaSø Greenland is a suitable calibration for down-core temperature reconstructions at Lake Toyoni.

AB - Identifying the lacustrine haptophyte species that produce long-chain alkenones (LCAs) is essential prior to down-core temperature reconstructions. Here, we investigated the identity of LCA-producing species from Lake Toyoni, Japan using 18S ribosomal DNA (rDNA) and organic geochemical analyses. The rDNA analyses identified eighteen operational taxonomic units (OTUs) of which only one fell within the haptophyte phylotype. This haptophyte belongs to the Group I phylotype, as supported by the LCA distribution found in surface and down-core sediments, and is closely related to a haptophyte found in Lake BrayaSø (Greenland). The inferred temperature using the Greenland calibration is very close to the Lake Toyoni surface temperature recorded during the spring/early summer season, when the LCA-producing haptophyte is likely to bloom. We therefore suggest that the temperature calibration from the Lake BrayaSø Greenland is a suitable calibration for down-core temperature reconstructions at Lake Toyoni.

KW - Alkenones

KW - Environmental genomic

KW - Haptophyte

KW - Lake

KW - Temperature

UR - http://www.scopus.com/inward/record.url?scp=85054177591&partnerID=8YFLogxK

U2 - 10.1016/j.orggeochem.2018.09.011

DO - 10.1016/j.orggeochem.2018.09.011

M3 - Article

AN - SCOPUS:85054177591

VL - 125

SP - 189

EP - 195

JO - Organic Geochemistry

JF - Organic Geochemistry

SN - 0146-6380

ER -