Occurrence of 2-hydroxy acids in microalgae

Matsumoto, Genki I.; Shioya, Makoto; Nagashima, Hideyuki

doi:10.1016/s0031-9422(00)80478-1

Cited by 46 publications

(16 citation statements)

References 14 publications

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“…Long‐chain ω ‐hydroxy FAs (from C 16 to C 34 ) and α ‐ and β ‐hydroxy FAs (>C 20 ) are abundant in epicuticular plant waxes [ Simoneit , ; Rogge et al , ]. However, microalgae/algal detritus [ Cranwell , ], cyanobacteria [ Matsumoto and Nagashima , ; Matsumoto et al , ], and sea grasses [ Volkman et al , ] also contribute to short‐chain homologues of α ‐ and ω ‐hydroxy FAs. Moreover, short‐chain α ‐hydroxy FAs are formed as intermediates in the photochemical oxidation pathways by which long‐chain fatty acids from higher plants are degraded during atmospheric transport [ Volkman et al , ; Wakeham , ].…”

Section: Introductionmentioning

confidence: 99%

Tracing atmospheric transport of soil microorganisms and higher plant waxes in the East Asian outflow to the North Pacific Rim by using hydroxy fatty acids: Year‐round observations at Gosan, Jeju Island

et al. 2017

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Atmospheric transport of soil microorganisms and higher plant waxes in East Asia significantly influences the aerosol composition over the North Pacific. This study investigates the year‐round atmospheric abundances of hydroxy fatty acids (FAs), tracers of soil microorganisms (β‐isomers), and plant waxes (α‐ and ω‐isomers), in total suspended particles collected at Gosan, Jeju Island, during April 2001 to March 2002. These hydroxy FAs showed a pronounced seasonality, higher concentrations in winter/spring and lower concentrations in summer/autumn, which are consistent with other tracers of soil microbes (trehalose), resuspended dust (nss‐Ca2+), and stable carbon isotopic composition (δ13C) of total carbon. The molecular distributions of β‐hydroxy FAs (predominance of C12 and C16 in winter/spring and summer/autumn, respectively) are consistent with those from a remote island (Chichijima) in the North Pacific and Asian dust standards (CJ‐1 and CJ‐2). This observation together with back trajectories over Gosan reveal that desert sources in China during winter and arid regions of Mongolia and Russian Far East during spring are the major contributors of soil microbes over the North Pacific. Predominance of ω‐isomers (83%) over β‐hydroxy FAs (16%) revealed a major contribution of terrestrial lipids from higher plant waxes over soil microbes in the East Asian outflow.

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Section: Introductionmentioning

confidence: 99%

Tracing atmospheric transport of soil microorganisms and higher plant waxes in the East Asian outflow to the North Pacific Rim by using hydroxy fatty acids: Year‐round observations at Gosan, Jeju Island

et al. 2017

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“…The analytical procedures were essentially similar to those of previous studies (Matsumoto et al, 1979(Matsumoto et al, , 1984aMatsumoto 8z Nagashima, 1984). Organic constituents were extracted from each 11 water sample three times (200 mlx 1, 100 mlx2) with ethyl acetate and concentrated to dryness under reduced pressure at 30 "C. The ethyl acetate extracts were saponified with 10 ml O.SM-potassium hydroxide/methanol (80 "C, 2 h) and extracted with ethyl acetate after acidification with concentrated hydrochloric acid.…”

Section: Samplesmentioning

confidence: 73%

“…Mass spectra (m/z 50-600) were obtained continuously at 1.5 set intervals at an ionization energy of 70 eV. The identification of each compound was made by comparison of retention times and mass spectra with those of authentic standards and published literature (Eglinton et al, 1968;Boon etal., 1977a;Matsumoto et al, 1979Matsumoto et al, , 1984aMatsumoto & Nagashima, 1984). …”

Section: Physicochemical Propertiesmentioning

confidence: 99%

“…Hydroxy acids also occur in a wide variety of microorganisms, such as bacteria, yeasts and fungi, and higher plants, although little is known of their occurrence in cyanobacteria and other algae (Matsumoto & Nagashima, 1984;Matsumoto et al, 1984a). Only microorganisms occur in Lake Fryxell, although there is scattered moss vegetation around the lake.…”

Section: Introductionmentioning

confidence: 99%

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Vertical distribution of organic constituents in an Antarctic lake: Lake Fryxell

1989

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Vertical distribution of organic constituents, i.e. total organic carbon (TOC), hydrocarbons, fatty acids and hydroxy acids in water and sediment samples from Lake Fryxell(77" 35' S, 163' 15' E) of southern Victoria Land, Antarctica were studied to elucidate their features in relation to stratification of the lake waters and likely distribution of microorganisms. The TOC content of the surface water (5.0 m; just below the ice cover of 4.50 m thickness) was 1.4 mg l-'. It increased markedly with depth and attained a maximum value of 21.7 mg C l-' at a depth of 17.5 m, but decreased to the bottom (13.3 mg C l-'). The high TOC content of the anoxic bottom layers (> 15 m) is attributable to the concentration of refractory organic substances over long periods following the degradation of labile organic constituents. Hydrocarbons were not found in the water column, but the major constituent of the bottom sediment was n-C,, : 2 alkene. Total concentrations of fatty acids in the oxic layers (< 10 m) were highest at 10.0 m and much higher than those in the anoxic layers (> 10 m), probably reflecting the phytoplankton population. The content of branched (iso and anteiso) fatty acids and 3-hydroxy acids in the anoxic layers were much greater than those in the oxic layers which would seem to reflect the distribution of bacterial abundance. The differences of organic composition between the water column and sediments imply that sinking dead organisms were quickly degraded in the lake bottom. Also, the composition of microorganisms in the water column must be very different from that in the sediments.

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“…Hydroxy acids occur in vascular plants and a wide variety of microorganisms, such as bacteria, yeasts and fungi, but little is known of their presence in cyanobacteria and algae (Pohl & Wagner, 1972;Boon et al, 1977;Cardoso & Eglinton, 1983;Matsumoto & Nagashima, 1984;Matsumoto et al, 1984a). 2-, 3-and o-1-Hydroxy acids of carbon chain lengths between C, and C,, have been detected in sediment samples from Lakes Vanda, Bonney, Fryxell and Joyce and in epibenthic organisms (mostly cyanobacteria) from the Dry Valleys of the McMurdo Oasis .…”

Section: Hydroxy Acidsmentioning

confidence: 99%