Cargando…
Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies
Branched glycerol dibiphytanyl glycerol tetraethers (bGDGTs) are known as bacterial lipids that occur widely in terrestrial environments, particularly in anaerobic peat bogs and soil. We examined the abundance and distribution of bGDGTs in both core (C) and polar (P) lipid fractions from the water c...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Research Foundation
2012
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3253547/ https://www.ncbi.nlm.nih.gov/pubmed/22291686 http://dx.doi.org/10.3389/fmicb.2011.00274 |
_version_ | 1782220745259089920 |
---|---|
author | Zhang, Chuanlun L. Wang, Jinxiang Wei, Yuli Zhu, Chun Huang, Liuqin Dong, Hailiang |
author_facet | Zhang, Chuanlun L. Wang, Jinxiang Wei, Yuli Zhu, Chun Huang, Liuqin Dong, Hailiang |
author_sort | Zhang, Chuanlun L. |
collection | PubMed |
description | Branched glycerol dibiphytanyl glycerol tetraethers (bGDGTs) are known as bacterial lipids that occur widely in terrestrial environments, particularly in anaerobic peat bogs and soil. We examined the abundance and distribution of bGDGTs in both core (C) and polar (P) lipid fractions from the water column and surface sediments in the lower Pearl River (PR) and its estuary using two extraction methods (sonication vs. Bligh and Dyer). A number of soil samples in the lower PR drainage basin were also collected and extracted for bGDGTs using the sonication method. The results showed aquatic production of bGDGTs as supported by substantial abundances of P-bGDGTs in the water column and sediment samples. The bGDGT-based proxies (BIT, CBT, and MBT) were not affected by the method of extraction when C-bGDGTs were analyzed; in such case, the pH(CBT) of the sediments reflected the soil pH of the lower PR drainage basin, and the temperature close to the annual mean air temperature (MAT) in the lower PR basin. On the other hand, the P-bGDGT-derived proxies were inconsistent between the two methods. The P-bGDGTs (particularly those extracted using the sonication method) may not be reliable indicators of annual MATs. |
format | Online Article Text |
id | pubmed-3253547 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Frontiers Research Foundation |
record_format | MEDLINE/PubMed |
spelling | pubmed-32535472012-01-30 Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies Zhang, Chuanlun L. Wang, Jinxiang Wei, Yuli Zhu, Chun Huang, Liuqin Dong, Hailiang Front Microbiol Microbiology Branched glycerol dibiphytanyl glycerol tetraethers (bGDGTs) are known as bacterial lipids that occur widely in terrestrial environments, particularly in anaerobic peat bogs and soil. We examined the abundance and distribution of bGDGTs in both core (C) and polar (P) lipid fractions from the water column and surface sediments in the lower Pearl River (PR) and its estuary using two extraction methods (sonication vs. Bligh and Dyer). A number of soil samples in the lower PR drainage basin were also collected and extracted for bGDGTs using the sonication method. The results showed aquatic production of bGDGTs as supported by substantial abundances of P-bGDGTs in the water column and sediment samples. The bGDGT-based proxies (BIT, CBT, and MBT) were not affected by the method of extraction when C-bGDGTs were analyzed; in such case, the pH(CBT) of the sediments reflected the soil pH of the lower PR drainage basin, and the temperature close to the annual mean air temperature (MAT) in the lower PR basin. On the other hand, the P-bGDGT-derived proxies were inconsistent between the two methods. The P-bGDGTs (particularly those extracted using the sonication method) may not be reliable indicators of annual MATs. Frontiers Research Foundation 2012-01-09 /pmc/articles/PMC3253547/ /pubmed/22291686 http://dx.doi.org/10.3389/fmicb.2011.00274 Text en Copyright © 2012 Zhang, Wang, Wei, Zhu, Huang and Dong. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited. |
spellingShingle | Microbiology Zhang, Chuanlun L. Wang, Jinxiang Wei, Yuli Zhu, Chun Huang, Liuqin Dong, Hailiang Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title | Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title_full | Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title_fullStr | Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title_full_unstemmed | Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title_short | Production of Branched Tetraether Lipids in the Lower Pearl River and Estuary: Effects of Extraction Methods and Impact on bGDGT Proxies |
title_sort | production of branched tetraether lipids in the lower pearl river and estuary: effects of extraction methods and impact on bgdgt proxies |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3253547/ https://www.ncbi.nlm.nih.gov/pubmed/22291686 http://dx.doi.org/10.3389/fmicb.2011.00274 |
work_keys_str_mv | AT zhangchuanlunl productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies AT wangjinxiang productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies AT weiyuli productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies AT zhuchun productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies AT huangliuqin productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies AT donghailiang productionofbranchedtetraetherlipidsinthelowerpearlriverandestuaryeffectsofextractionmethodsandimpactonbgdgtproxies |