Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments

Frederique Kirkels; Muhammed Ojoshogu Usman; Francien Peterse

doi:10.1016/j.orggeochem.2022.104405

Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments

Frederique Kirkels
, Muhammed Ojoshogu Usman
, Francien Peterse

Swiss Federal Institute of Technology Zurich

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) are a group of membrane-spanning lipids produced by (yet) unidentified bacteria. They are characterized by a C-C bond connecting the two alkyl chains, which is thought to enhance membrane stability at higher temperatures. So far, they have been found in peats, lakes, and marine sediments, where their abundance relative to that of branched glycerol dialkyl glycerol tetraethers (brGDGTs) increases with temperature. However, the preferred niche(s) for production and the origin of brGMGTs in the terrestrial and marine realm remain unknown. Here we explore the occurrence of brGMGTs in soils, suspended particulate matter (SPM) and riverbed sediments in the Godavari River basin, and compare these with brGMGTs in a Holocene sediment core from the Bay of Bengal close to the Godavari River mouth. BrGMGTs are mostly detected in agricultural and/or regularly inundated soils, and in the river at sites with standing water and/or agricultural/wastewater effluents, as well as in the delta, where low oxygen conditions and/or high nutrient levels prevail. In contrast, brGMGTs are continuously present in the marine sediment core, but with a different isomeric composition than in the terrestrial realm, indicating a primarily marine source. The stable brGMGT distribution downcore and brGMGT-inferred temperature estimates which resemble the bottom water temperature, may suggest marine brGMGT production in the deep water column and/or sediments. However, to establish the proxy potential of brGMGTs for paleoreconstructions in the terrestrial and marine realm, brGMGT sources and environmental controls require further study.

Original language	English
Article number	104405
Pages (from-to)	1-12
Number of pages	12
Journal	Organic Geochemistry
Volume	167
DOIs	https://doi.org/10.1016/j.orggeochem.2022.104405
Publication status	Published - May 2022

Bibliographical note

Funding Information:
This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript.

Funding Information:
This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript. Data from this paper are available in the Pangaea database. BrGMGT and geochemical data for the Godavari basin ( Kirkels et al. 2021a; https://doi.org/10.1594/PANGAEA.937965) and Bay of Bengal core ( Kirkels et al. 2021b; https://doi.org/10.1594/PANGAEA.937932). BrGDGT and geochemical data for the Godavari basin ( Kirkels et al. 2021c; https://doi.org/10.1594/PANGAEA.934712) and the Bay of Bengal core ( Kirkels et al. 2021d; https://doi.org/10.1594/PANGAEA.934701). BrGDGT data for the Godavari soils are included in the global soil and peat branched GDGT compilation dataset by Dearing Crampton-Flood et al. (2019) ( https://doi.org/10.1016/j.gca.2019.09.043).

Publisher Copyright:
© 2022 The Authors

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Keywords

BrGMGTs
H-shaped brGDGTs
India
Godavari Basin
Bay of Bengal
Marine production

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Cite this

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title = "Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments",

abstract = "Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) are a group of membrane-spanning lipids produced by (yet) unidentified bacteria. They are characterized by a C-C bond connecting the two alkyl chains, which is thought to enhance membrane stability at higher temperatures. So far, they have been found in peats, lakes, and marine sediments, where their abundance relative to that of branched glycerol dialkyl glycerol tetraethers (brGDGTs) increases with temperature. However, the preferred niche(s) for production and the origin of brGMGTs in the terrestrial and marine realm remain unknown. Here we explore the occurrence of brGMGTs in soils, suspended particulate matter (SPM) and riverbed sediments in the Godavari River basin, and compare these with brGMGTs in a Holocene sediment core from the Bay of Bengal close to the Godavari River mouth. BrGMGTs are mostly detected in agricultural and/or regularly inundated soils, and in the river at sites with standing water and/or agricultural/wastewater effluents, as well as in the delta, where low oxygen conditions and/or high nutrient levels prevail. In contrast, brGMGTs are continuously present in the marine sediment core, but with a different isomeric composition than in the terrestrial realm, indicating a primarily marine source. The stable brGMGT distribution downcore and brGMGT-inferred temperature estimates which resemble the bottom water temperature, may suggest marine brGMGT production in the deep water column and/or sediments. However, to establish the proxy potential of brGMGTs for paleoreconstructions in the terrestrial and marine realm, brGMGT sources and environmental controls require further study.",

keywords = "BrGMGTs, H-shaped brGDGTs, India, Godavari Basin, Bay of Bengal, Marine production",

author = "Frederique Kirkels and Usman, \{Muhammed Ojoshogu\} and Francien Peterse",

note = "Funding Information: This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript. Funding Information: This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript. Data from this paper are available in the Pangaea database. BrGMGT and geochemical data for the Godavari basin ( Kirkels et al. 2021a; https://doi.org/10.1594/PANGAEA.937965) and Bay of Bengal core ( Kirkels et al. 2021b; https://doi.org/10.1594/PANGAEA.937932). BrGDGT and geochemical data for the Godavari basin ( Kirkels et al. 2021c; https://doi.org/10.1594/PANGAEA.934712) and the Bay of Bengal core ( Kirkels et al. 2021d; https://doi.org/10.1594/PANGAEA.934701). BrGDGT data for the Godavari soils are included in the global soil and peat branched GDGT compilation dataset by Dearing Crampton-Flood et al. (2019) ( https://doi.org/10.1016/j.gca.2019.09.043). Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

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doi = "10.1016/j.orggeochem.2022.104405",

language = "English",

volume = "167",

pages = "1--12",

journal = "Organic Geochemistry",

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TY - JOUR

T1 - Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments

AU - Kirkels, Frederique

AU - Usman, Muhammed Ojoshogu

AU - Peterse, Francien

N1 - Funding Information: This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript. Funding Information: This research was supported by Veni Grant 863.13.016 from the Netherlands Organisation for Scientific Research (NWO) to F.P. at Utrecht University (UU). We are grateful to Prof. Prasanta Sanyal from the Indian Institute of Science Education and Research (IISER) in Kolkata (India) for his help to organise the fieldwork in the Godavari basin. We thank Dr. Maarten Lupker (ETH Zurich), Dr. Sayak Basu (IISER), Chris Martes (UU) and Huub Zwart (UU) for their assistance in the field. We further thank Prof. Liviu Giosan and Dr. Camilo Ponton (Woods Hole Oceanographic Institute) for access to the Bay of Bengal core and Suning Hou (UU), Dr. Klaas Nierop (UU), Dr. Ellen Hopmans (NIOZ) and Dr. Marcel van der Meer (NIOZ) for laboratory assistance. We thank Yan Bai and two anonymous reviewers for constructive feedback that greatly improved the manuscript. Data from this paper are available in the Pangaea database. BrGMGT and geochemical data for the Godavari basin ( Kirkels et al. 2021a; https://doi.org/10.1594/PANGAEA.937965) and Bay of Bengal core ( Kirkels et al. 2021b; https://doi.org/10.1594/PANGAEA.937932). BrGDGT and geochemical data for the Godavari basin ( Kirkels et al. 2021c; https://doi.org/10.1594/PANGAEA.934712) and the Bay of Bengal core ( Kirkels et al. 2021d; https://doi.org/10.1594/PANGAEA.934701). BrGDGT data for the Godavari soils are included in the global soil and peat branched GDGT compilation dataset by Dearing Crampton-Flood et al. (2019) ( https://doi.org/10.1016/j.gca.2019.09.043). Publisher Copyright: © 2022 The Authors

PY - 2022/5

Y1 - 2022/5

N2 - Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) are a group of membrane-spanning lipids produced by (yet) unidentified bacteria. They are characterized by a C-C bond connecting the two alkyl chains, which is thought to enhance membrane stability at higher temperatures. So far, they have been found in peats, lakes, and marine sediments, where their abundance relative to that of branched glycerol dialkyl glycerol tetraethers (brGDGTs) increases with temperature. However, the preferred niche(s) for production and the origin of brGMGTs in the terrestrial and marine realm remain unknown. Here we explore the occurrence of brGMGTs in soils, suspended particulate matter (SPM) and riverbed sediments in the Godavari River basin, and compare these with brGMGTs in a Holocene sediment core from the Bay of Bengal close to the Godavari River mouth. BrGMGTs are mostly detected in agricultural and/or regularly inundated soils, and in the river at sites with standing water and/or agricultural/wastewater effluents, as well as in the delta, where low oxygen conditions and/or high nutrient levels prevail. In contrast, brGMGTs are continuously present in the marine sediment core, but with a different isomeric composition than in the terrestrial realm, indicating a primarily marine source. The stable brGMGT distribution downcore and brGMGT-inferred temperature estimates which resemble the bottom water temperature, may suggest marine brGMGT production in the deep water column and/or sediments. However, to establish the proxy potential of brGMGTs for paleoreconstructions in the terrestrial and marine realm, brGMGT sources and environmental controls require further study.

AB - Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) are a group of membrane-spanning lipids produced by (yet) unidentified bacteria. They are characterized by a C-C bond connecting the two alkyl chains, which is thought to enhance membrane stability at higher temperatures. So far, they have been found in peats, lakes, and marine sediments, where their abundance relative to that of branched glycerol dialkyl glycerol tetraethers (brGDGTs) increases with temperature. However, the preferred niche(s) for production and the origin of brGMGTs in the terrestrial and marine realm remain unknown. Here we explore the occurrence of brGMGTs in soils, suspended particulate matter (SPM) and riverbed sediments in the Godavari River basin, and compare these with brGMGTs in a Holocene sediment core from the Bay of Bengal close to the Godavari River mouth. BrGMGTs are mostly detected in agricultural and/or regularly inundated soils, and in the river at sites with standing water and/or agricultural/wastewater effluents, as well as in the delta, where low oxygen conditions and/or high nutrient levels prevail. In contrast, brGMGTs are continuously present in the marine sediment core, but with a different isomeric composition than in the terrestrial realm, indicating a primarily marine source. The stable brGMGT distribution downcore and brGMGT-inferred temperature estimates which resemble the bottom water temperature, may suggest marine brGMGT production in the deep water column and/or sediments. However, to establish the proxy potential of brGMGTs for paleoreconstructions in the terrestrial and marine realm, brGMGT sources and environmental controls require further study.

KW - BrGMGTs

KW - H-shaped brGDGTs

KW - India

KW - Godavari Basin

KW - Bay of Bengal

KW - Marine production

UR - https://www.scopus.com/pages/publications/85128637082

U2 - 10.1016/j.orggeochem.2022.104405

DO - 10.1016/j.orggeochem.2022.104405

M3 - Article

SN - 0146-6380

VL - 167

SP - 1

EP - 12

JO - Organic Geochemistry

JF - Organic Geochemistry

M1 - 104405

ER -

Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments

Abstract

Bibliographical note

UN SDGs

Keywords

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