Phospholipids as a component of the oceanic phosphorus cycle
Phospholipids as a component of the oceanic phosphorus cycle
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磷脂作为海洋磷循环的组成部分
DOI：
10.1016/j.marchem.2018.08.002
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发表时间：
2018
期刊：
影响因子：
3
通讯作者：
Schaub, Tanner
中科院分区：
文献类型：
--
作者：
Gašparović, Blaženka;Penezić, Abra;Lampitt, Richard S.;Sudasinghe, Nilusha;Schaub, Tanner
利用Iatroscan薄层色谱和高分辨率傅里叶变换离子回旋共振质谱（FT-ICR MS）对东北大西洋海洋含磷脂质（PL）的分布进行了表征。磷脂是海洋颗粒有机碳（POC）的一个小但重要的部分（1.5%）。我们总共描述了1862种PL化合物的分布，其中只有约27%的元素组成与Nature Lipidomics Gateway数据库中发现的元素组成相匹配（例如，磷脂酰甘油（PG）、磷脂酰胆碱（PC）、磷脂酰乙醇胺（PE）、磷脂酸（PA）、磷脂酰丝氨酸（PS）和磷脂酰肌醇（PI））。磷脂浓度最高的是在上层，这反映了该深度层的初级生产。深度相关的PL去除是最强的PL信号匹配数据库报告（已知）的脂质和饱和的非数据库（新的）匹配的PL较低。已知PL的转换的标志是与深度相关的饱和度增加与PA被假定为产生作为PL的最早的转换产品。新的不饱和P-脂质可能来源于PL转化过程和表面层的原位生物生产。新型PL主要由不饱和化合物，其不饱和度增加之间的epipelagic（平均分子双键当量，DBE = 5）和abyssopelagic（平均DBE = 6.7）区。此外，这些化合物的平均分子量和对所有脂质含量的贡献随着深度的增加而增加，可能来自不饱和化合物的交联。我们的数据表明，新PL选择性地保存深度，因此是P和C载体深大西洋。我们表明，磷循环的充分赞赏需要更多的数据，磷脂成分，特别是这些化合物的生态作用和深度相关的分子变化。
We characterize the distribution of oceanic phosphorus-containing lipids (PL) in the Northeast Atlantic by Iatroscan thin layer chromatography and high resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Phospholipids are a small but significant fraction of oceanic particulate organic carbon (POC) (1.5%). We describe the distribution of 1862 PL compounds in total, of which only ~27% have elemental compositions that match those found in the Nature Lipidomics Gateway database (e.g., phosphatidylglycerol (PG), phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidic acid (PA), phosphatidyl serine (PS), and phosphatidylinositol (PI)). The highest phospholipid concentration is found in the epipelagic, which reflects primary production in that depth horizon. Depth-related PL removal was the strongest for PL signals that match database-reported (known) lipids and was lower for saturated non-database (novel) matched PL. The transformation of known PL is marked by depth-related increase in saturation with PA that is assumed to be generated as the earliest transformation product of PL. Novel unsaturated P-lipids likely originate from both PL transformation processes and in-situ biological production at the surface layer. Novel PL are dominated by unsaturated compounds for which unsaturation increased between the epipelagic (average molecular double bond equivalents, DBE = 5) and the abyssopelagic (average DBE = 6.7) zones. Additionally, those compounds increase in both average molecular weight and contribution to all lipid content with increasing depth, likely from cross-linking of unsaturated compounds. Our data indicate that novel PL are selectively preserved with depth and therefore are P and C carriers to the deep Atlantic. We demonstrate that a full appreciation of phosphorus cycling requires additional data on phospholipid composition and especially the ecological role and depth-related molecular change of these compounds.
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DOI：
10.1016/j.chroma.2017.09.038
发表时间：
2017
期刊：
Journal of chromatography. A
影响因子：
--
作者：
B. Gašparović;S. Kazazić;Ana Cvitešić;Abra Penezić;S. Frka
通讯作者：
S. Frka
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DOI：
10.1515/iupac.90.0592
发表时间：
2019
期刊：
IUPAC Standards Online
影响因子：
--
作者：
J. Labuda;R. Bowater;M. Fojta;G. Gauglitz;Z. Glatz;I. Hapala;J. Havliš;F. Kilár;Anikó Kilár;Lenka Malinovská;Heli M. M. Sirén;P. Skládal;F. Torta;M. Valachovič;M. Wimmerová;Z. Zdráhal;D. B. Hibbert
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D. B. Hibbert
桡足类粪便颗粒的出口化学计量和对颗粒有机碳、氮和磷垂直通量的贡献
影响因子：
2.5
作者：
Tobias Tamelander;A. Aubert;C. W. Riser
通讯作者：
C. W. Riser
分析微生物脂质以确定生物量并检测沉积微生物对干扰的响应
DOI：
10.1201/9780203752746-41
发表时间：
2018
影响因子：
3
作者：
F. Dobbs;R. Findlay
通讯作者：
R. Findlay
地中海完整极性二酰基甘油脂的梯度与磷酸盐的可用性有关
影响因子：
4.9
作者：
Kimberly J. Popendorf;Tsuneo Tanaka;M. Pujo;A. Lagaria;C. Courties;P. Conan;L. Oriol;L. E. Sofen;T. Moutin;B. V. Mooy
通讯作者：
B. V. Mooy