Concentrations, turnover rates and fluxes of polyamines in coastal waters of the South Atlantic Bight

Liu, Qian; Lü, Xinxin; Tolar, Bradley B.; Mou, Xiaozhen; Hollibaugh, James T.

doi:10.1007/s10533-014-0056-1

Cited by 23 publications

(78 citation statements)

References 60 publications

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“…SPM, pmol l −1 ) or only detected occasionally (e.g. NSPD, NSPM, diaminopropane and cadaverine; Nishibori et al 2001a,b, 2003, Liu et al 2015. Based on our previous work (Liu et al 2015), we hypothesized that the PA composition of seawater is determined by the balance between release of PAs from phytoplankton and uptake by bacterioplankton.…”

Section: Open Pen Access Ccessmentioning

confidence: 93%

“…NSPD, NSPM, diaminopropane and cadaverine; Nishibori et al 2001a,b, 2003, Liu et al 2015. Based on our previous work (Liu et al 2015), we hypothesized that the PA composition of seawater is determined by the balance between release of PAs from phytoplankton and uptake by bacterioplankton. As the source of PAs, phytoplankton might play a more important role than bacterioplankton in determining PA profiles in the environment because species-specific differences in the composition of intracellular PA pools could affect the composition of PAs released into the environment.…”

Section: Open Pen Access Ccessmentioning

confidence: 99%

“…PA distributions in the ocean are usually correlated with phytoplankton biomass and bacterial production (Lee 1992, Lee & Jørgensen 1995, Lu et al 2014, Liu et al 2015. PUT and SPD are ubiquitous and relatively abundant (low nmol l −1 ), with other PAs present either at lower levels (e.g.…”

Section: Open Pen Access Ccessmentioning

confidence: 99%

See 2 more Smart Citations

Response of polyamine pools in marine phytoplankton to nutrient limitation and variation in temperature and salinity

Liu¹,

Nishibori²,

Imai³

et al. 2016

Mar. Ecol. Prog. Ser.

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Section: Open Pen Access Ccessmentioning

confidence: 93%

Section: Open Pen Access Ccessmentioning

confidence: 99%

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Response of polyamine pools in marine phytoplankton to nutrient limitation and variation in temperature and salinity

Liu¹,

Nishibori²,

Imai³

et al. 2016

Mar. Ecol. Prog. Ser.

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“…Today, a wealth of new data coming largely but not exclusively from the "'omics" tools (genomics, transcriptomics, proteomics, and metabolomics) suggests that a much wider variety of molecules participate in the rapid heterotrophic DOM flux. For example, gene expression studies in both the ocean and laboratory indicate that labile DOM can take the form of monocarboxylic and dicarboxylic acids (27,28), glycerols and fatty acids (27,29), and the nitrogen-containing metabolites taurine, choline, sarcosine, polyamines, methylamines, and ectoine (27,30,31). One-carbon compounds such as methanol (27,29,31), as well as several sulfonates (32), have recently been added to the list.…”

Section: Which Compounds Represent the Largest Conduits Of Carbon Flumentioning

confidence: 99%

“…Genes able to mediate microbial interactions have also been uncovered (71,72), including a high prevalence of virulence gene homologs in marine bacteria and archaea that could facilitate direct contact with eukaryotic plankton (73). The conditions under which genes mediating microbial interactions in the ocean are expressed are now better understood because of metatranscriptomic surveys (30,32). Examples include the alteration of marine phytoplankton growth rates by bacterial release of phenylacetic acid (74) and indole acetic acid (72), and the modulation of bacterial quorum-sensing molecules (75) and antibiotic production (76) by phytoplankton.…”

Section: How Do Microbe−microbe Relationships Influence Dom?mentioning

confidence: 99%

Deciphering ocean carbon in a changing world

Moran

Kujawinski

Stubbins

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

266

233

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Dissolved organic matter (DOM) in the oceans is one of the largest pools of reduced carbon on Earth, comparable in size to the atmospheric CO 2 reservoir. A vast number of compounds are present in DOM, and they play important roles in all major element cycles, contribute to the storage of atmospheric CO 2 in the ocean, support marine ecosystems, and facilitate interactions between organisms. At the heart of the DOM cycle lie molecular-level relationships between the individual compounds in DOM and the members of the ocean microbiome that produce and consume them. In the past, these connections have eluded clear definition because of the sheer numerical complexity of both DOM molecules and microorganisms. Emerging tools in analytical chemistry, microbiology, and informatics are breaking down the barriers to a fuller appreciation of these connections. Here we highlight questions being addressed using recent methodological and technological developments in those fields and consider how these advances are transforming our understanding of some of the most important reactions of the marine carbon cycle.dissolved organic matter | marine microbes | cyberinfrastructure

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Spatiotemporal distribution and microbial assimilation of polyamines in a mesotrophic lake

Krempaska

Horňák

2017

Limnology & Oceanography

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We examined seasonal and spatial variations of dissolved free polyamines (DFPA) in the large mesotrophic prealpine Lake Zurich (Switzerland). An ion‐pairing liquid chromatography method with mass spectrometric detection was optimized for the quantification of DFPA without prior concentration or derivatization. Total DFPA concentrations varied between 0.4 nM and 11 nM in winter and spring of 2015, respectively. Polyamine concentrations were highest in the epilimnion during the phytoplankton growth phase, and reflected occurrence patterns of diatoms. Putrescine consistently dominated the DFPA pool throughout the season whereas norspermidine was detected only once in spring. Incubations with 13C‐labeled putrescine revealed concentration‐dependent uptake rates (3.2–5 nM h−1) and short turnover times (2.4–4.4 h). In contrast, incorporation rates into biomass measured with 14C‐labeled putrescine were substantially lower (0.9 nM h−1), indicating that this compound was predominantly respired. Uptake kinetics moreover suggested that putrescine in situ uptake rates were limited by low ambient concentrations. Competition assays revealed that putrescine uptake could only be inhibited by excess concentrations of another polyamine (spermidine), but not by amino acids. Bacteria affiliated with Limnohabitans and the acI lineage of Actinobacteria were identified as the taxa with the highest fraction (25–32%) of putrescine‐incorporating cells. This compound was also utilized by Alphaproteobacteria, Cyclobacteriaceae, diatoms, and cyanobacteria. Overall, our data point to fast turnover of putrescine by different microorganisms, implying the importance of this substrate as an attractive energy source.

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Concentrations, turnover rates and fluxes of polyamines in coastal waters of the South Atlantic Bight

Cited by 23 publications

References 60 publications

Response of polyamine pools in marine phytoplankton to nutrient limitation and variation in temperature and salinity

Response of polyamine pools in marine phytoplankton to nutrient limitation and variation in temperature and salinity

Deciphering ocean carbon in a changing world

Spatiotemporal distribution and microbial assimilation of polyamines in a mesotrophic lake

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