当前位置： SCI文献检索 > PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA期刊下所有文献 > Surface exposure to sunlight stimulates CO2 release from permafrost soil carbon in the Arctic.

Surface exposure to sunlight stimulates CO2 release from permafrost soil carbon in the Arctic.

Abstract：

:Recent climate change has increased arctic soil temperatures and thawed large areas of permafrost, allowing for microbial respiration of previously frozen C. Furthermore, soil destabilization from melting ice has caused an increase in thermokarst failures that expose buried C and release dissolved organic C (DOC) to surface waters. Once exposed, the fate of this C is unknown but will depend on its reactivity to sunlight and microbial attack, and the light available at the surface. In this study we manipulated water released from areas of thermokarst activity to show that newly exposed DOC is >40% more susceptible to microbial conversion to CO(2) when exposed to UV light than when kept dark. When integrated over the water column of receiving rivers, this susceptibility translates to the light-stimulated bacterial activity being on average from 11% to 40% of the total areal activity in turbid versus DOC-colored rivers, respectively. The range of DOC lability to microbes seems to depend on prior light exposure, implying that sunlight may act as an amplification factor in the conversion of frozen C stores to C gases in the atmosphere.

journal_name

Proc Natl Acad Sci U S A

journal_title

Proceedings of the National Academy of Sciences of the United States of America

authors

Cory RM,Crump BC,Dobkowski JA,Kling GW

doi

10.1073/pnas.1214104110

subject

Has Abstract

pub_date

2013-02-26 00:00:00

pages

3429-34

issue

9

eissn

0027-8424

issn

1091-6490

pii

1214104110

journal_volume

110

pub_type

杂志文章

相关文献

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA文献大全
  • Effect of genetic modification of tyrosine-185 on the proton pump and the blue-to-purple transition in bacteriorhodopsin.

    abstract：:The retinylidene chromophore mutant (Y185F) of bacteriorhodopsin, in which Tyr-185 is substituted by phenylalanine, is examined and compared with wild-type bacteriorhodopsin expressed in Escherichia coli; both were reinstituted similarly in vesicles. The Y185F mutant shows (at least) two distinct spectra at neutral pH...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.87.11.4103

    authors： Jang DJ,el-Sayed MA,Stern LJ,Mogi T,Khorana HG

    更新日期：1990-06-01 00:00:00

  • Modulation of hydroxyl variability by ENSO in the absence of external forcing.

    abstract：:The hydroxyl radical (OH) is the primary oxidant in the troposphere, and the impact of its fluctuations on the methane budget has been disputed in recent years, however measurements of OH are insufficient to characterize global interannual fluctuations relevant for methane. Here, we use a 6,000-y control simulation of...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1807532115

    authors： Turner AJ,Fung I,Naik V,Horowitz LW,Cohen RC

    更新日期：2018-09-04 00:00:00

  • Identifying early modern human ecological niche expansions and associated cultural dynamics in the South African Middle Stone Age.

    abstract：:The archaeological record shows that typically human cultural traits emerged at different times, in different parts of the world, and among different hominin taxa. This pattern suggests that their emergence is the outcome of complex and nonlinear evolutionary trajectories, influenced by environmental, demographic, and...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1620752114

    authors： d'Errico F,Banks WE,Warren DL,Sgubin G,van Niekerk K,Henshilwood C,Daniau AL,Sánchez Goñi MF

    更新日期：2017-07-25 00:00:00

  • Galactose metabolic genes in yeast respond to a ratio of galactose and glucose.

    abstract：:Natural environments are filled with multiple, often competing, signals. In contrast, biological systems are often studied in "well-controlled" environments where only a single input is varied, potentially missing important interactions between signals. Catabolite repression of galactose by glucose is one of the best-...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1418058112

    authors： Escalante-Chong R,Savir Y,Carroll SM,Ingraham JB,Wang J,Marx CJ,Springer M

    更新日期：2015-02-03 00:00:00

  • Phylogeny and ancient DNA of Sus provides insights into neolithic expansion in Island Southeast Asia and Oceania.

    abstract：:Human settlement of Oceania marked the culmination of a global colonization process that began when humans first left Africa at least 90,000 years ago. The precise origins and dispersal routes of the Austronesian peoples and the associated Lapita culture remain contentious, and numerous disparate models of dispersal (...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 历史文章,杂志文章

    doi：10.1073/pnas.0607753104

    authors： Larson G,Cucchi T,Fujita M,Matisoo-Smith E,Robins J,Anderson A,Rolett B,Spriggs M,Dolman G,Kim TH,Thuy NT,Randi E,Doherty M,Due RA,Bollt R,Djubiantono T,Griffin B,Intoh M,Keane E,Kirch P,Li KT,Morwood M,Pedriñ

    更新日期：2007-03-20 00:00:00

  • A family of chromatin remodeling factors related to Williams syndrome transcription factor.

    abstract：:Chromatin remodeling complexes have been implicated in the disruption or reformation of nucleosomal arrays resulting in modulation of transcription, DNA replication, and DNA repair. Here we report the isolation of WCRF, a new chromatin-remodeling complex from HeLa cells. WCRF is composed of two subunits, WCRF135, the ...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.97.3.1038

    authors： Bochar DA,Savard J,Wang W,Lafleur DW,Moore P,Côté J,Shiekhattar R

    更新日期：2000-02-01 00:00:00

  • Substrate recognition and catalysis by GH47 α-mannosidases involved in Asn-linked glycan maturation in the mammalian secretory pathway.

    abstract：:Maturation of Asn-linked oligosaccharides in the eukaryotic secretory pathway requires the trimming of nascent glycan chains to remove all glucose and several mannose residues before extension into complex-type structures on the cell surface and secreted glycoproteins. Multiple glycoside hydrolase family 47 (GH47) α-m...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1611213113

    authors： Xiang Y,Karaveg K,Moremen KW

    更新日期：2016-12-06 00:00:00

  • Toward solving the folding pathway of barnase: the complete backbone 13C, 15N, and 1H NMR assignments of its pH-denatured state.

    abstract：:The structures of the major folding intermediate, the transition state for folding, and the folded state of barnase have been previously characterized. We now add a further step toward a complete picture of the folding of barnase by reporting the backbone 15N, 13C, and 1H NMR assignments for barnase unfolded at pH 1.8...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.91.20.9412

    authors： Arcus VL,Vuilleumier S,Freund SM,Bycroft M,Fersht AR

    更新日期：1994-09-27 00:00:00

  • miR-200 family and targets, ZEB1 and ZEB2, modulate uterine quiescence and contractility during pregnancy and labor.

    abstract：:Throughout most of pregnancy, uterine quiescence is maintained by increased progesterone receptor (PR) transcriptional activity, whereas spontaneous labor is initiated/facilitated by a concerted series of biochemical events that activate inflammatory pathways and have a negative impact on PR function. In this study, w...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1008301107

    authors： Renthal NE,Chen CC,Williams KC,Gerard RD,Prange-Kiel J,Mendelson CR

    更新日期：2010-11-30 00:00:00

  • Identification of Id4 as a regulator of BRCA1 expression by using a ribozyme-library-based inverse genomics approach.

    abstract：:Expression of the breast and ovarian cancer susceptibility gene BRCA1 is down-regulated in sporadic breast and ovarian cancer cases. Therefore, the identification of genes involved in the regulation of BRCA1 expression might lead to new insights into the pathogenesis and treatment of these tumors. In the present study...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.98.1.130

    authors： Beger C,Pierce LN,Kruger M,Marcusson EG,Robbins JM,Welcsh P,Welch PJ,Welte K,King MC,Barber JR,Wong-Staal F

    更新日期：2001-01-02 00:00:00

  • Regulatory T cells facilitate the nuclear accumulation of inducible cAMP early repressor (ICER) and suppress nuclear factor of activated T cell c1 (NFATc1).

    abstract：:Inducible cAMP early repressor (ICER) is a transcriptional repressor, which, because of alternate promoter use, is generated from the 3' region of the cAMP response modulator (Crem) gene. Its expression and nuclear occurrence are elevated by high cAMP levels in naturally occurring regulatory T cells (nTregs). Using tw...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1009463108

    authors： Vaeth M,Gogishvili T,Bopp T,Klein M,Berberich-Siebelt F,Gattenloehner S,Avots A,Sparwasser T,Grebe N,Schmitt E,Hünig T,Serfling E,Bodor J

    更新日期：2011-02-08 00:00:00

  • Low-calorie diet prevents the development of mammary tumors in C3H mice and reduces circulating prolactin level, murine mammary tumor virus expression, and proliferation of mammary alveolar cells.

    abstract：:The effect of carlorie intake on the development of spontaneous mammary tumors in virgin C3H mice was studied. Only about 10% of the mice fed a low-calorie diet [10 kcal/day (1 kcal = 4.184 kJ)] since weaning developed mammary tumors, compared to about 60% of those mice that were reared on high-calorie diets (16 kcal/...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.79.24.7758

    authors： Sarkar NH,Fernandes G,Telang NT,Kourides IA,Good RA

    更新日期：1982-12-01 00:00:00

  • Glucose and glucosamine regulate growth factor gene expression in vascular smooth muscle cells.

    abstract：:We have investigated the regulation of the expression of two growth factors found in vascular smooth muscle, transforming growth factor alpha (TGF alpha) and basic fibroblast growth factor (bFGF). Cells cultured in medium containing 30 mM glucose exhibited a 2-fold increase in TGF alpha mRNA and a 3-fold increase in b...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.89.17.8150

    authors： McClain DA,Paterson AJ,Roos MD,Wei X,Kudlow JE

    更新日期：1992-09-01 00:00:00

  • Protein cleavage during virus assembly: a novel specificity of assembly dependent cleavage in bacteriophage T4.

    abstract：:Cleavage of precursor proteins occurs during assembly of numerous viruses. Seven bacteriophage T4 head-related proteins areknown to be cleaved during morphogenesis. Sequences surrounding the cleavage sites in T4 head precursors P23 and IPIII are reported here. We previously determined the sequences of precursor and pr...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.73.11.4205

    authors： Isobe T,Black LW,Tsugita A

    更新日期：1976-11-01 00:00:00

  • Hybrid polarizing solids for pure hyperpolarized liquids through dissolution dynamic nuclear polarization.

    abstract：:Hyperpolarization of substrates for magnetic resonance spectroscopy (MRS) and imaging (MRI) by dissolution dynamic nuclear polarization (D-DNP) usually involves saturating the ESR transitions of polarizing agents (PAs; e.g., persistent radicals embedded in frozen glassy matrices). This approach has shown enormous pote...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1407730111

    authors： Gajan D,Bornet A,Vuichoud B,Milani J,Melzi R,van Kalkeren HA,Veyre L,Thieuleux C,Conley MP,Grüning WR,Schwarzwälder M,Lesage A,Copéret C,Bodenhausen G,Emsley L,Jannin S

    更新日期：2014-10-14 00:00:00

  • Human lysyl-tRNA synthetase is secreted to trigger proinflammatory response.

    abstract：:Although aminoacyl-tRNA synthetases (ARSs) are essential for protein synthesis, they also function as regulators and signaling molecules in diverse biological processes. Here, we screened 11 different human ARSs to identify the enzyme that is secreted as a signaling molecule. Among them, we found that lysyl-tRNA synth...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.0500226102

    authors： Park SG,Kim HJ,Min YH,Choi EC,Shin YK,Park BJ,Lee SW,Kim S

    更新日期：2005-05-03 00:00:00

  • The pleckstrin homology domain of Bruton tyrosine kinase interacts with protein kinase C.

    abstract：:Bruton tyrosine kinase (EC 2.7.1.112) [Btk, encoded by Btk in mice and BTK in humans (formerly known as atk, BPK, or emb)], which is variously mutated in chromosome X-linked agammaglobulinemia patients and X-linked immunodeficient (xid) mice, has the pleckstrin homology (PH) domain at its amino terminus. The PH domain...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.91.19.9175

    authors： Yao L,Kawakami Y,Kawakami T

    更新日期：1994-09-13 00:00:00

  • Predicting risky choices from brain activity patterns.

    abstract：:Previous research has implicated a large network of brain regions in the processing of risk during decision making. However, it has not yet been determined if activity in these regions is predictive of choices on future risky decisions. Here, we examined functional MRI data from a large sample of healthy subjects perf...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1321728111

    authors： Helfinstein SM,Schonberg T,Congdon E,Karlsgodt KH,Mumford JA,Sabb FW,Cannon TD,London ED,Bilder RM,Poldrack RA

    更新日期：2014-02-18 00:00:00

  • Preliminary analysis of the requirements for fusion from within and fusion from without by Newcastle disease virus.

    abstract：:Different strains of Newcastle disease virus vary in their ability to induce cell fusion. When administered to cells at high multiplicities of infection some strains induce cell fusion within three hours. This type of fusion is apparently caused by the virus particles in the inoculum, since it can be induced by noninf...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.64.2.536

    authors： Bratt MA,Gallaher WR

    更新日期：1969-10-01 00:00:00

  • McClintock's challenge in the 21st century.

    abstract：:In 1950, Barbara McClintock published a Classic PNAS article, "The origin and behavior of mutable loci in maize," which summarized the evidence leading to her discovery of transposition. The article described a number of genome alterations revealed through her studies of the Dissociation locus, the first mobile geneti...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 传,历史文章,杂志文章

    doi：10.1073/pnas.1215482109

    authors： Fedoroff NV

    更新日期：2012-12-11 00:00:00

  • Plant mating system transitions drive the macroevolution of defense strategies.

    abstract：:Understanding the factors that shape macroevolutionary patterns in functional traits is a central goal of evolutionary biology. Alternative strategies of sexual reproduction (inbreeding vs. outcrossing) have divergent effects on population genetic structure and could thereby broadly influence trait evolution. However,...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1213867110

    authors： Campbell SA,Kessler A

    更新日期：2013-03-05 00:00:00

  • RSK1 drives p27Kip1 phosphorylation at T198 to promote RhoA inhibition and increase cell motility.

    abstract：:p90 ribosomal S6 kinase (RSK1) is an effector of both Ras/MEK/MAPK and PI3K/PDK1 pathways. We present evidence that RSK1 drives p27 phosphorylation at T198 to increase RhoA-p27 binding and cell motility. RSK1 activation and p27pT198 both increase in early G(1). As for many kinase-substrate pairs, cellular RSK1 copreci...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.0805057106

    authors： Larrea MD,Hong F,Wander SA,da Silva TG,Helfman D,Lannigan D,Smith JA,Slingerland JM

    更新日期：2009-06-09 00:00:00

  • Relationship between RNA-directed DNA polymerase (reverse transcriptase) from human acute leukemic blood cells and primate type-C viruses.

    abstract：:An RNA-directed DNA polymerase was isolated from the peripheral blood leukocytes of a patient with acute myelomonocytic leukemia by successive purification of a particulate cytoplasmic fraction with endogenous, ribonuclease-sensitive DNA polymerase activity. Like RNA-directed DNA polymerase from mammalian type-C virus...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.71.4.1309

    authors： Gallagher RE,Todaro GJ,Smith RG,Livingston DM,Gallo RC

    更新日期：1974-04-01 00:00:00

  • Glucocorticoid inhibition of RNA synthesis responsible for cleft palate in mice: a model.

    abstract：:A study was undertaken to elucidate the molecular mechanisms by which glucocorticoids induce cleft palate in mice. It was hypothesized that a compound such as triamcinolone acetonide inhibits mRNA synthesis; that this results later in depressed protein synthesis; and that the latter is ultimately responsible for slowe...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.67.2.779

    authors： Zimmerman EF,Andrew F,Kalter H

    更新日期：1970-10-01 00:00:00

  • NO synthase 2 (NOS2) deletion promotes multiple pathologies in a mouse model of Alzheimer's disease.

    abstract：:Alzheimer's disease is characterized by two primary pathological features: amyloid plaques and neurofibrillary tangles. The interconnection between amyloid and tau aggregates is of intense interest, but mouse models have yet to reveal a direct interrelationship. We now show that NO may be a key factor that connects am...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.0601075103

    authors： Colton CA,Vitek MP,Wink DA,Xu Q,Cantillana V,Previti ML,Van Nostrand WE,Weinberg JB,Dawson H

    更新日期：2006-08-22 00:00:00

  • Ctp1 and Exonuclease 1, alternative nucleases regulated by the MRN complex, are required for efficient meiotic recombination.

    abstract：:Double-strand breaks (DSBs) in DNA are lethal unless repaired. Faithful repair requires processing of the DSB ends and interaction with intact homologous DNA, which can produce genetic recombinants. To determine the role of nucleases in DSB end-processing and joint molecule resolution, we studied recombination at the ...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.0902793106

    authors： Farah JA,Cromie GA,Smith GR

    更新日期：2009-06-09 00:00:00

  • New model to explain tooth wear with implications for microwear formation and diet reconstruction.

    abstract：:Paleoanthropologists and vertebrate paleontologists have for decades debated the etiology of tooth wear and its implications for understanding the diets of human ancestors and other extinct mammals. The debate has recently taken a twist, calling into question the efficacy of dental microwear to reveal diet. Some argue...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1509491112

    authors： Xia J,Zheng J,Huang D,Tian ZR,Chen L,Zhou Z,Ungar PS,Qian L

    更新日期：2015-08-25 00:00:00

  • Rod light response augmented by active phosphodiesterase.

    abstract：:Light activates rod outer segment (ROS) phosphodiesterase (PDEase), as shown by previous biochemical and physiological studies. We have further investigated the role of PDEase in this system by injecting trypsin-activated PDEase, purified from bovine ROS, into single ROS of the isolated retina of the toad Bufo marinus...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.81.2.616

    authors： Shimoda Y,Hurley JB,Miller WH

    更新日期：1984-01-01 00:00:00

  • Structure of a phleboviral envelope glycoprotein reveals a consolidated model of membrane fusion.

    abstract：:An emergent viral pathogen termed severe fever with thrombocytopenia syndrome virus (SFTSV) is responsible for thousands of clinical cases and associated fatalities in China, Japan, and South Korea. Akin to other phleboviruses, SFTSV relies on a viral glycoprotein, Gc, to catalyze the merger of endosomal host and vira...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1603827113

    authors： Halldorsson S,Behrens AJ,Harlos K,Huiskonen JT,Elliott RM,Crispin M,Brennan B,Bowden TA

    更新日期：2016-06-28 00:00:00

  • Duration of urination does not change with body size.

    abstract：:Many urological studies rely on models of animals, such as rats and pigs, but their relation to the human urinary system is poorly understood. Here, we elucidate the hydrodynamics of urination across five orders of magnitude in body mass. Using high-speed videography and flow-rate measurement obtained at Zoo Atlanta, ...

    journal_title：Proceedings of the National Academy of Sciences of the United States of America

    pub_type： 杂志文章

    doi：10.1073/pnas.1402289111

    authors： Yang PJ,Pham J,Choo J,Hu DL

    更新日期：2014-08-19 00:00:00