Distribution of long chain heterocyst glycolipids in N2-fixing cyanobacteria of the order Stigonematales

Bauersachs, Thorsten; Mudimu, Opayi; Schulz, Ruediger; Schwark, Lorenz

doi:10.1016/j.phytochem.2013.11.007

Cited by 22 publications

(21 citation statements)

References 28 publications

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“…The composition of HGs in cyanobacteria is known to be related to their taxonomy (Bauersachs et al, 2009a(Bauersachs et al, , 2014aGambacorta et al, 1995Gambacorta et al, , 1998Schouten et al, 2013;Wörmer et al, 2012). Hence, we compared the distribution of the HGs observed in our sedimentary record of the Baltic Sea with the HGs produced in vitro by different heterocystous cyanobacterial species.…”

Section: The Distribution Of Hgsmentioning

confidence: 99%

“…Gas exchange is believed to be regulated by the heterocyst cell wall, which consists of two separate polysaccharide and glycolipid layers (Murry and Wolk, 1989;Walsby, 1985), of which the latter acts as the gas diffusion barrier. These layers, known as heterocyst glycolipids (HGs), have been found to date to be unique to heterocyst-forming cyanobacteria (Bryce et al, 1972;Nichols and Wood, 1968), and furthermore their composition has been discovered to be distinct at the level of families and even genera (Bauersachs et al, 2009a(Bauersachs et al, , 2014aGambacorta et al, 1998;Schouten et al, 2013). Their structure comprises a sugar moiety glycosidically bound to a long n-alkyl chain ( Fig.…”

Section: Introductionmentioning

confidence: 99%

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The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation

et al. 2017

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Abstract. Heterocyst glycolipids (HGs) are lipids exclusively produced by heterocystous dinitrogen-fixing cyanobacteria. The Baltic Sea is an ideal environment to study the distribution of HGs and test their potential as biomarkers because of its recurring summer phytoplankton blooms, dominated by a few heterocystous cyanobacterial species of the genera Nodularia and Aphanizomenon. A multi-core and a gravity core from the Gotland Basin were analyzed to determine the abundance and distribution of a suite of selected HGs at a high resolution to investigate the changes in past cyanobacterial communities during the Holocene. The HG distribution of the sediments deposited during the Modern Warm Period (MoWP) was compared with those of cultivated heterocystous cyanobacteria, including those isolated from Baltic Sea waters, revealing high similarity. However, the abundance of HGs dropped substantially with depth, and this may be caused by either a decrease in the occurrence of the cyanobacterial blooms or diagenesis, resulting in partial destruction of the HGs. The record also shows that the HG distribution has remained stable since the Baltic turned into a brackish semi-enclosed basin ∼ 7200 cal. yr BP. This suggests that the heterocystous cyanobacterial species composition remained relatively stable as well. During the earlier freshwater phase of the Baltic (i.e., the Ancylus Lake and Yoldia Sea phases), the distribution of the HGs varied much more than in the subsequent brackish phase, and the absolute abundance of HGs was much lower than during the brackish phase. This suggests that the cyanobacterial community adjusted to the different environmental conditions in the basin. Our results confirm the potential of HGs as a specific biomarker of heterocystous cyanobacteria in paleo-environmental studies.

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Section: The Distribution Of Hgsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation

et al. 2017

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“…Subsequently, an aliquot of the freeze-dried biomass was exhaustively extracted following the methodology described by ref. (Bauersachs et al, 2014).…”

Section: Molecular Analysis Of Pre-extracted Cyanobacterial Biomass (mentioning

confidence: 99%

Ideas and perspectives: Hydrothermally driven redistribution and sequestration of early Archaean biomass – the hydrothermal pump hypothesis

Duda¹,

Thiel²,

Bauersachs³

et al. 2017

Preprint

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Abstract. Archaean hydrothermal chert veins commonly contain abundant organic carbon of uncertain origin (abiotic vs. biotic). In this study, we analysed kerogen contained in a hydrothermal chert vein from the ca. 3.5 Ga old Dresser Formation 20 (Pilbara Craton, Western Australia). Catalytic hydropyrolysis (HyPy) of this kerogen yielded n-alkanes up to n-C 22 , with a sharp decrease in abundance beyond n-C 18 . A very similar distribution (≤ n-C 18 ) was observed in HyPy products of preextracted recent bacterial biomass, while abiotic compounds synthesised via Fischer-Tropsch-type synthesis exhibited a modal distribution. We therefore propose that the original organic matter in the Archaean chert veins has a primarily microbial origin. We hypothesise that the microbially-derived organic matter accumulated in different aquatic and 25 subsurface Dresser environments, and was then assimilated, redistributed and sequestered by hydrothermal fluids ('hydrothermal pump hypothesis').

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“…1; Bryce et al, 1972;Gambacorta et al, 1998;Bauersachs et al, 2009bBauersachs et al, , 2011. Studies have found that C 6 HGs are not only biomarkers for heterocystous cyanobacteria and the N fixation process, but show structural diversity, depending on the family level within the divisions (Bauersachs et al, 2009a(Bauersachs et al, , 2014. The C 6 HGs are nearly exclusively from freshwater, free-living cyanobacteria.…”

Section: Introductionmentioning

confidence: 99%

Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria

Bale

Hopmans

Zell

et al. 2015

Organic Geochemistry

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a b s t r a c tMarine endosymbiotic heterocystous cyanobacteria make unique heterocyst glycolipids (HGs) containing pentose (C 5 ) moieties. Functionally similar HGs with hexose (C 6 ) moieties found in free-living cyanobacteria occur in the sedimentary record, but C 5 HGs have not been documented in the natural environment.Here we developed a high performance liquid chromatography multiple reaction monitoring (MRM) mass spectrometry (HPLC-MS 2 ) method specific for trace analysis of long chain C 5 HGs and applied it to cultures of Rhizosolenia clevei Ostenfeld and its symbiont Richelia intracellularis which were found to contain C 5 HGs and no C 6 HGs. The method was then applied to suspended particulate matter (SPM) and surface sediment from the Amazon plume region known to harbor marine diatoms carrying heterocystous cyanobacteria as endosymbionts. C 5 HGs were detected in both marine SPM and surface sediments, but not in SPM or surface sediment from freshwater settings in the Amazon basin. Rather, the latter contained C 6 HGs, established biomarkers for free-living heterocystous cyanobacteria. Our results indicate that the C 5 HGs may be potential biomarkers for marine endosymbiotic heterocystous cyanobacteria.

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Distribution of long chain heterocyst glycolipids in N2-fixing cyanobacteria of the order Stigonematales

Cited by 22 publications

References 28 publications

The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation

The Holocene sedimentary record of cyanobacterial glycolipids in the Baltic Sea: an evaluation of their application as tracers of past nitrogen fixation

Ideas and perspectives: Hydrothermally driven redistribution and sequestration of early Archaean biomass – the hydrothermal pump hypothesis

Long chain glycolipids with pentose head groups as biomarkers for marine endosymbiotic heterocystous cyanobacteria

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