Spatial Variations in Archaeal Lipids of Surface Water and Core-Top Sediments in the South China Sea and Their Implications for Paleoclimate Studies

Wei, Yuli; Wang, Jinxiang; Liu, Jie; Dong, Lixin; Li, Li; Wang, Hui; Wang, Peng; Zhao, Meixun; Zhang, Chuanlun L.

doi:10.1128/aem.00580-11

Cited by 69 publications

(67 citation statements)

References 69 publications

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“…Low terrestrial nutrient input is the major cause of the oligotrophic conditions in the nSCS, which is supported by gene-and membrane lipid-based analyses of this and other studies (41). Soil-related thaumarchaeotal amoA sequences were only occasionally detected in the constructed clone libraries of the nSCS (cluster II in Fig.…”

Section: Fig 4 Cca Ordination Plot For the First Two Dimensions (Cca1supporting

confidence: 55%

“…Cluster analysis was also performed using the relative abundances of iGDGTs to evaluate the variations of archaeal membrane core lipid composition and spatial distribution with MINITAB using a Euclidean distance measure and Ward linkage (41). Pearson correlation analyses were performed to investigate the relationship of the prevalent environmental factors in the nSCS with the abundance of the sediment thaumarchaeol and the calculated BIT values.…”

Section: Methodsmentioning

confidence: 99%

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Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Dang

Zhou

Yang

et al. 2013

Appl Environ Microbiol

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f Thaumarchaeota are abundant and active in marine waters, where they contribute to aerobic ammonia oxidation and light-independent carbon fixation. The ecological function of thaumarchaeota in marine sediments, however, has rarely been investigated, even though marine sediments constitute the majority of the Earth's surface. Thaumarchaeota in the upper layer of sediments may contribute significantly to the reservoir of nitrogen oxides in ocean waters and thus to productivity, including the assimilation of carbon. We tested this hypothesis in the northern South China Sea (nSCS), a section of a large oligotrophic marginal sea with limited influx of nutrients, including nitrogen, by investigating the diversity, abundance, community structure, and spatial distribution of thaumarchaeotal signatures in surface sediments. Quantitative real-time PCR using primers designed to detect 16S rRNA and amoA genes in sediment community DNA revealed a significantly higher abundance of pertinent thaumarchaeotal than betaproteobacterial genes. This finding correlates with high levels of hcd genes, a signature of thaumarchaeotal autotrophic carbon fixation. Thaumarchaeol, a signature lipid biomarker for thaumarchaeota, constituted the majority of archaeal lipids in marine sediments. Sediment temperature and organic P and silt contents were identified as key environmental factors shaping the community structure and distribution of the monitored thaumarchaeotal amoA genes. When the pore water PO 4 3؊ concentration was controlled for via partial-correlation analysis, thaumarchaeotal amoA gene abundance significantly correlated with the sediment pore water NO 2 ؊ concentration, suggesting that the amoA-bearing thaumarchaeota contribute to nitrite production. Statistical analyses also suggest that thaumarchaeotal metabolism could serve as a pivotal intersection of the carbon, nitrogen, and phosphorus cycles in marine sediments.

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Section: Fig 4 Cca Ordination Plot For the First Two Dimensions (Cca1supporting

confidence: 55%

Section: Methodsmentioning

confidence: 99%

Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Dang

Zhou

Yang

et al. 2013

Appl Environ Microbiol

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“…However , Jia et al (2012) showed that the TEX 86 -and U K 0 37 -based temperat ure values for deep water (>300 m) core top sediments in the SCS may record subsurface, specifically 30-125 m, water temperat ure and SST, respectively. On the shallow inner shelf of the northern SCS, Wei et al (2011) and Ge et al (2013) showed significantly lower sedimentary TEX 86 temperature estimate s than the mean annual SST based on satellite data. In Wei et al (2011), no specific reason was given for the low TEX 86 values, whereas the Ge et al (2013) study realized that TEX 86 might reflect winter temperat ure.…”

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confidence: 76%

“…On the shallow inner shelf of the northern SCS, Wei et al (2011) and Ge et al (2013) showed significantly lower sedimentary TEX 86 temperature estimate s than the mean annual SST based on satellite data. In Wei et al (2011), no specific reason was given for the low TEX 86 values, whereas the Ge et al (2013) study realized that TEX 86 might reflect winter temperat ure. However, there is a lack of an integrated study of U K 0 37 and TEX 86 in this region.…”

mentioning

confidence: 76%

“…A recent study suggests that the TEX 86 record in the SCS may be consistent with annual sea surface temperat ure (SST) in the open sea (Wei et al, 2011;Ge et al, 2013 ). However , Jia et al (2012) showed that the TEX 86 -and U K 0 37 -based temperat ure values for deep water (>300 m) core top sediments in the SCS may record subsurface, specifically 30-125 m, water temperat ure and SST, respectively.…”

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confidence: 99%

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Alkenone and tetraether lipids reflect different seasonal seawater temperatures in the coastal northern South China Sea

Zhang

Bai

et al. 2013

Organic Geochemistry

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Seasonal distribution of archaeal lipids in surface water and its constraint on their sources and the TEX₈₆ temperature proxy in sediments of the South China Sea

et al. 2017

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The applicability of the temperature proxy based on a tetraether index of 86 carbon atoms (TEX86) from isoprenoidal glycerol dialkyl glycerol tetraethers (isoGDGTs) has increasingly been examined in the South China Sea (SCS). Views on the proxy differ on whether it is biased to a particular season or to depth in this sea. Here we studied isoGDGTs in a large number of suspended particulate matters (SPM) in surface water during summer and winter as well as several surface sediments of the northern SCS. The integration of these novel data with already published data demonstrated that isoGDGTs were similar in distribution between surface water SPM and shallow shelf sediments. They can be characterized by low ratio (<4) of [GDGT‐2]/[GDGT‐3] and low‐percentage abundance (<4%) of the crenarchaeol regioisomer; however, those in deep basin sediments showed higher values for both parameters, suggesting a substantial contribution of “deep‐water” Thaumarchaeota. The relationship between TEX86 in SPM and in situ measured sea surface temperature differed from a global calibration and showed distinct trends between summer and winter, reflecting archaeal seasonality in surface waters. By assuming the TEX86 temperature signal in shallow sediments as the weighted mean of summer and winter signals, we revealed spatial changes in the relative contribution of summer and winter archaeal isoGDGTs to sediments, with a likely higher winter contribution further offshore. This occurrence may complicate the interpretation of the shallow sedimentary TEX86 record, and further investigation is required to fully understand seasonal archaeal lipid production and sedimentation.

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Spatial Variations in Archaeal Lipids of Surface Water and Core-Top Sediments in the South China Sea and Their Implications for Paleoclimate Studies

Cited by 69 publications

References 69 publications

Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Alkenone and tetraether lipids reflect different seasonal seawater temperatures in the coastal northern South China Sea

Seasonal distribution of archaeal lipids in surface water and its constraint on their sources and the TEX₈₆ temperature proxy in sediments of the South China Sea

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Spatial Variations in Archaeal Lipids of Surface Water and Core-Top Sediments in the South China Sea and Their Implications for Paleoclimate Studies

Cited by 69 publications

References 69 publications

Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Thaumarchaeotal Signature Gene Distribution in Sediments of the Northern South China Sea: an Indicator of the Metabolic Intersection of the Marine Carbon, Nitrogen, and Phosphorus Cycles?

Alkenone and tetraether lipids reflect different seasonal seawater temperatures in the coastal northern South China Sea

Seasonal distribution of archaeal lipids in surface water and its constraint on their sources and the TEX86 temperature proxy in sediments of the South China Sea

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Seasonal distribution of archaeal lipids in surface water and its constraint on their sources and the TEX₈₆ temperature proxy in sediments of the South China Sea