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Apostolakis A, Aoust G, Maisons G, Laurent L, Pereira MF. Photoacoustic Spectroscopy Using a Quantum Cascade Laser for Analysis of Ammonia in Water Solutions. ACS OMEGA 2024; 9:19127-19135. [PMID: 38708224 PMCID: PMC11064027 DOI: 10.1021/acsomega.3c10175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 05/07/2024]
Abstract
Ammonia (NH3) toxicity, stemming from nitrification, can adversely affect aquatic life and influence the taste and odor of drinking water. This underscores the necessity for highly responsive and accurate sensors to continuously monitor NH3 levels in water, especially in complex environments, where reliable sensors have been lacking until this point. Herein, we detail the development of a sensor comprising a compact and selective analyzer with low gas consumption and a timely response based on photoacoustic spectroscopy. This, combined with an automated liquid sampling system, enables the precise detection of ammonia traces in water. The sensor system incorporates a state-of-the art quantum cascade laser as the excitation source emitting at 9 μm in resonance with the absorption line of NH3 located at 1103.46 cm-1. Our instrument demonstrated detection sensitivity at a low ppm level for the ammonia molecule with response times of less than 60 s. For the sampling system, an ammonia stripping solution was designed, resulting in a prompt full measurement cycle (6.35 min). A further evaluation of the sensor within a pilot study showed good reliability and agreement with the reference method for real water samples, confirming the potential of our NH3 analyzer for water quality monitoring applications.
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Affiliation(s)
- Apostolos Apostolakis
- Institute
of Physics, Czech Academy of Sciences, Na Slovance 2, CZ-18200 Prague, Czech Republic
| | - Guillaume Aoust
- MIRSENSE, Nano-INNOV Batiment 863, 8 av de
la Vauve, 91120 Palaiseau, France
| | - Grégory Maisons
- MIRSENSE, Nano-INNOV Batiment 863, 8 av de
la Vauve, 91120 Palaiseau, France
| | - Ludovic Laurent
- MIRSENSE, Nano-INNOV Batiment 863, 8 av de
la Vauve, 91120 Palaiseau, France
| | - Mauro Fernandes Pereira
- Institute
of Physics, Czech Academy of Sciences, Na Slovance 2, CZ-18200 Prague, Czech Republic
- Department
of Physics, Khalifa University of Science
and Technology, 127788 Abu Dhabi, United Arab Emirates
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2
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Effect of Wearing Surgical Face Masks on Gas Detection from Respiration Using Photoacoustic Spectroscopy. Molecules 2022; 27:molecules27113618. [PMID: 35684554 PMCID: PMC9182023 DOI: 10.3390/molecules27113618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/17/2022] Open
Abstract
Wearing surgical face masks is among the measures taken to mitigate coronavirus disease (COVID-19) transmission and deaths. Lately, concern was expressed about the possibility that gases from respiration could build up in the mask over time, causing medical issues related to the respiratory system. In this research study, the carbon dioxide concentration and ethylene in the breathing zone were measured before and immediately after wearing surgical face masks using the photoacoustic spectroscopy method. From the determinations of this study, the C2H4 was established to be increased by 1.5% after one hour of wearing the surgical face mask, while CO2 was established to be at a higher concentration of 1.2% after one hour of wearing the surgical face mask, when the values were correlated with the baseline (control).
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3
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MoBiMS: A modular miniature mass analyzer for the real-time monitoring of gases and volatile compounds in biological systems. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Alfalfa ( Medicago sativa) Sprouts Respiratory Responses to Cadmium Stress Using IR LPAS. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27061891. [PMID: 35335255 PMCID: PMC8951020 DOI: 10.3390/molecules27061891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 11/30/2022]
Abstract
Cadmium (Cd) is not considered a fundamental element for plants inducing general growth disturbances and inhibition in many species of plants. The purpose of our research was to examine the ethylene (C2H4) and ammonia (NH3), emissions in alfalfa sprouts with or without Cd, using infrared laser photoacoustic spectroscopy (IR LPAS), in order to suggest new markers that may add a better knowledge of Cd effect. The responses of alfalfa sprouts to C2H4 and NH3 may fluctuate, depending on tissue sensitivity and the phase of plant development. From the determinations of this study, the C2H4 was established to be inhibited, while NH3 was established to be in a higher concentration with the amount of Cd added to the alfalfa seeds for growth when the values were correlated to the control and BIOalfalfa sprouts (Sonnentor).
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5
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A Breach in Plant Defences: Pseudomonas syringae pv. actinidiae Targets Ethylene Signalling to Overcome Actinidia chinensis Pathogen Responses. Int J Mol Sci 2021; 22:ijms22094375. [PMID: 33922148 PMCID: PMC8122719 DOI: 10.3390/ijms22094375] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/16/2021] [Accepted: 04/20/2021] [Indexed: 01/12/2023] Open
Abstract
Ethylene interacts with other plant hormones to modulate many aspects of plant metabolism, including defence and stomata regulation. Therefore, its manipulation may allow plant pathogens to overcome the host’s immune responses. This work investigates the role of ethylene as a virulence factor for Pseudomonas syringae pv. actinidiae (Psa), the aetiological agent of the bacterial canker of kiwifruit. The pandemic, highly virulent biovar of this pathogen produces ethylene, whereas the biovars isolated in Japan and Korea do not. Ethylene production is modulated in planta by light/dark cycle. Exogenous ethylene application stimulates bacterial virulence, and restricts or increases host colonisation if performed before or after inoculation, respectively. The deletion of a gene, unrelated to known bacterial biosynthetic pathways and putatively encoding for an oxidoreductase, abolishes ethylene production and reduces the pathogen growth rate in planta. Ethylene production by Psa may be a recently and independently evolved virulence trait in the arms race against the host. Plant- and pathogen-derived ethylene may concur in the activation/suppression of immune responses, in the chemotaxis toward a suitable entry point, or in the endophytic colonisation.
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6
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Lammers A, van Bragt J, Brinkman P, Neerincx A, Bos L, Vijverberg S, Maitland-van der Zee A. Breathomics in Chronic Airway Diseases. SYSTEMS MEDICINE 2021. [DOI: 10.1016/b978-0-12-801238-3.11589-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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7
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Identification of Quantitative Trait Loci Controlling Ethylene Production in Germinating Seeds in Maize (Zea mays L.). Sci Rep 2020; 10:1677. [PMID: 32015470 PMCID: PMC6997408 DOI: 10.1038/s41598-020-58607-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 01/17/2020] [Indexed: 11/15/2022] Open
Abstract
Plant seed germination is a crucial developmental event that has significant effects on seedling establishment and yield production. This process is controlled by multiple intrinsic signals, particularly phytohormones. The gaseous hormone ethylene stimulates seed germination; however, the genetic basis of ethylene production in maize during seed germination remains poorly understood. In this study, we quantified the diversity of germination among 14 inbred lines representing the parental materials corresponding to multiple recombinant inbred line (RIL) mapping populations. Quantitative trait loci (QTLs) controlling ethylene production were then identified in germinating seeds from an RIL population constructed from two parental lines showing differences in both germination speed and ethylene production during germination. To explore the possible genetic correlations of ethylene production with other traits, seed germination and seed weight were evaluated using the same batch of samples. On the basis of high-density single nucleotide polymorphism-based genetic linkage maps, we detected three QTLs for ethylene production in germinating seeds, three QTLs for seed germination, and four QTLs for seed weight, with each QTL explaining 5.8%–13.2% of the phenotypic variation of the trait. No QTLs were observed to be co-localized, suggesting that the genetic bases underlying the three traits are largely different. Our findings reveal three chromosomal regions responsible for ethylene production during seed germination, and provide a valuable reference for the future investigation of the genetic mechanism underlying the role of the stress hormone ethylene in maize germination control under unfavourable external conditions.
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8
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Cardador Maza D, Segura Garcia D, Deriziotis I, Garín M, Llorca J, Rodriguez A. Empirical demonstration of CO 2 detection using macroporous silicon photonic crystals as selective thermal emitters. OPTICS LETTERS 2019; 44:4535-4538. [PMID: 31517924 DOI: 10.1364/ol.44.004535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
This study describes the detection of CO2 using macroporous silicon photonic crystals as thermal emitters. It demonstrates that the reduction of structural nonhomogeneities leads to an improvement of the photonic crystals' emission. Narrow emission bands (Q∼120) located within the R-branch of carbon dioxide were achieved. Measurements were made using a deuterated triglycine sulfate photodetector and the photonic crystals, heated to 400°C, as selective emitters. A gas cell with a CO2 concentration between 0 ppm and 10,000 ppm was installed in the center. Results show high sensibility and selectivity that could be used in current nondispersive infrared devices for improving their features. These results open the door to narrowband emission in the mid-infrared for spectroscopic gas detection.
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9
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Hancock JT. Considerations of the importance of redox state for reactive nitrogen species action. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:4323-4331. [PMID: 30793204 DOI: 10.1093/jxb/erz067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/08/2019] [Indexed: 05/13/2023]
Abstract
Nitric oxide (NO) and other reactive nitrogen species (RNS) are immensely important signalling molecules in plants, being involved in a range of physiological responses. However, the exact way in which NO fits into signal transduction pathways is not always easy to understand. Here, some of the issues that should be considered are discussed. This includes how NO may interact directly with other reactive signals, such as reactive oxygen and sulfur species, how NO metabolism is almost certainly compartmentalized, that threshold levels of RNS may need to be reached to have effects, and how the intracellular redox environment may impact on NO signalling. Until better tools are available to understand how NO is generated in cells, where it accumulates, and to what levels it reaches, it will be hard to get a full understanding of NO signalling. The interaction of RNS metabolism with the intracellular redox environment needs further investigation. A changing redox poise will impact on whether RNS species can thrive in or around cells. Such mechanisms will determine whether specific RNS can indeed control the responses needed by a cell.
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Affiliation(s)
- John T Hancock
- Department of Applied Sciences, University of the West of England, Bristol, UK
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10
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Popa C. Ethylene Measurements from Sweet Fruits Flowers Using Photoacoustic Spectroscopy. Molecules 2019; 24:molecules24061144. [PMID: 30909457 PMCID: PMC6470477 DOI: 10.3390/molecules24061144] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 11/25/2022] Open
Abstract
Ethylene is a classical plant hormone and has appeared as a strong molecule managing many physiological and morphological reactions during the life of a plant. With laser-based photoacoustic spectroscopy, ethylene can be identified with high sensitivity, at a high rate and with very good selectivity. This research presents the dynamics of trace gases molecules for ethylene released by cherry flowers, apple flowers and strawberry flowers. The responses of distinctive organs to ethylene may fluctuate, depending on tissue sensitivity and the phase of plant development. From the determinations of this study, the ethylene molecules at the flowers in the nitrogen flow were established in lower concentrations when the value is correlated to the ethylene molecules at the flowers in synthetic air flow.
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Affiliation(s)
- Cristina Popa
- National Institute for Laser, Plasma and Radiation Physics, Laser Department, 409 Atomistilor St., P.O. Box MG-36, 077125 Magurele, Romania.
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11
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Hu DG, Yu JQ, Han PL, Xie XB, Sun CH, Zhang QY, Wang JH, Hao YJ. The regulatory module MdPUB29-MdbHLH3 connects ethylene biosynthesis with fruit quality in apple. THE NEW PHYTOLOGIST 2019; 221:1966-1982. [PMID: 30288754 DOI: 10.1111/nph.15511] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 09/25/2018] [Indexed: 05/20/2023]
Abstract
The plant hormone ethylene is critical for climacteric fruit ripening, while glucose and anthocyanins determine the fruit quality of climacteric fruits such as apple. Understanding the exact molecular mechanism for this process is important for elucidating the interconnection of ethylene and fruit quality. Overexpression of apple MdbHLH3 gene, an anthocyanin-related basic helix-loop-helix transcription factor (bHLH TF) gene, promotes ethylene production, and transgenic apple plantlets and trees exhibit ethylene-related root developmental abnormalities, premature leaf senescence, and fruit ripening. Biochemical analyses demonstrate that MdbHLH3 binds to the promoters of three genes that are involved in ethylene biosynthesis, including MdACO1, MdACS1, and MdACS5A, activating their transcriptional expression, thereby promoting ethylene biosynthesis. High glucose-inhibited U-box-type E3 ubiquitin ligase MdPUB29, the ortholog of Arabidopsis AtPUB29 in apple, influences the expression of ethylene biosynthetic genes and ethylene production by direct ubiquitination of the MdbHLH3 protein. Our findings provide new insights into the ubiquitination of MdbHLH3 by glucose-inhibited ubiquitin E3 ligase MdPUB29 in the regulation of ethylene biosynthesis as well as indicate that the regulatory module MdPUB29-MdbHLH3 connects ethylene biosynthesis with fruit quality in apple.
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Affiliation(s)
- Da-Gang Hu
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Jian-Qiang Yu
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Peng-Liang Han
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Xing-Bin Xie
- College of Horticulture, Anhui Agricultural University, Hefei, Anhui, 230036, China
| | - Cui-Hui Sun
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Quan-Yan Zhang
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Jia-Hui Wang
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
| | - Yu-Jin Hao
- National Key Laboratory of Crop Biology & MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, 271018, China
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12
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Montilla-Bascón G, Mandon J, Harren FJM, Mur LAJ, Cristescu SM, Prats E. Quantum Cascade Lasers-Based Detection of Nitric Oxide. Methods Mol Biol 2019; 1747:49-57. [PMID: 29600450 DOI: 10.1007/978-1-4939-7695-9_5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Despite the established importance of nitric oxide (NO) in many physiological and molecular processes in plants, most methods for quantifying NO are open to criticism This reflects the differing methods either lacking specificity or sensitivity, or even from an undue dependence of results on experimental conditions (i.e., chemical concentrations, pH, etc.). In this chapter we describe a protocol to measure gaseous NO produced by a biological sample using quantum cascade laser (QCL)-based spectroscopy. This technique is based on absorption of the laser light by the NO molecules which have been passed from a biological sample into an optical s cell that is equipped with two mirrors placed at both ends. This design greatly increases the interaction path length with the NO molecules due to multiple reflections of the light coupled inside the cell. Thus, the method is able to provide online, in planta measurements of the dynamics of NO production, being highly selective and sensitive (down to ppbv levels;1 ppbv = part per billion by volume mixing ratio = 1:10-9).
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Affiliation(s)
- Gracia Montilla-Bascón
- Institute for Sustainable Agriculture, Spanish Council for Scientific Research (CSIC), Córdoba, Spain
| | - Julien Mandon
- Department of Molecular and Laser Physics, Radboud University, Nijmegen, The Netherlands
| | - Frans J M Harren
- Department of Molecular and Laser Physics, Radboud University, Nijmegen, The Netherlands
| | - Luis A J Mur
- Institute of Biological, Environmental and Rural Sciences, University of Aberystwyth, Aberystwyth, UK
| | - Simona M Cristescu
- Department of Molecular and Laser Physics, Radboud University, Nijmegen, The Netherlands
| | - Elena Prats
- Institute for Sustainable Agriculture, Spanish Council for Scientific Research (CSIC), Córdoba, Spain.
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13
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Dong D, Jiao L, Li C, Zhao C. Rapid and real-time analysis of volatile compounds released from food using infrared and laser spectroscopy. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Montilla-Bascón G, Rubiales D, Hebelstrup KH, Mandon J, Harren FJM, Cristescu SM, Mur LAJ, Prats E. Reduced nitric oxide levels during drought stress promote drought tolerance in barley and is associated with elevated polyamine biosynthesis. Sci Rep 2017; 7:13311. [PMID: 29042616 PMCID: PMC5645388 DOI: 10.1038/s41598-017-13458-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 09/25/2017] [Indexed: 11/17/2022] Open
Abstract
Nitric oxide (NO) is a key messenger in plant stress responses but its exact role in drought response remains unclear. To investigate the role of NO in drought response we employed transgenic barley plants (UHb) overexpressing the barley non-symbiotic hemoglobin gene HvHb1 that oxidizes NO to NO3-. Reduced NO production under drought conditions in UHb plants was associated with increased drought tolerance. Since NO biosynthesis has been related to polyamine metabolism, we investigated whether the observed drought-related NO changes could involve polyamine pathway. UHb plants showed increases in total polyamines and in particular polyamines such as spermidine. These increases correlated with the accumulation of the amino acid precursors of polyamines and with the expression of specific polyamine biosynthesis genes. This suggests a potential interplay between NO and polyamine biosynthesis during drought response. Since ethylene has been linked to NO signaling and it is also related to polyamine metabolism, we explored this connection. In vivo ethylene measurement showed that UHb plants significantly decrease ethylene production and expression of aminocyclopropane-1-carboxylic acid synthase gene, the first committed step in ethylene biosynthesis compared with wild type. These data suggest a NO-ethylene influenced regulatory node in polyamine biosynthesis linked to drought tolerance/susceptibility in barley.
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Affiliation(s)
| | - Diego Rubiales
- CSIC, Institute for Sustainable Agriculture, Córdoba, Spain
| | - Kim H Hebelstrup
- Section of Crop Genetics and Biotechnology, Department of Molecular Biology and Genetics Aarhus University, Slagelse, Denmark
| | - Julien Mandon
- Radboud University, Department of Molecular and Laser Physics, Nijmegen, The Netherlands
| | - Frans J M Harren
- Radboud University, Department of Molecular and Laser Physics, Nijmegen, The Netherlands
| | - Simona M Cristescu
- Radboud University, Department of Molecular and Laser Physics, Nijmegen, The Netherlands
| | - Luis A J Mur
- Institute of Biological, Environmental and Rural Sciences, University of Aberystwyth, Aberystwyth, UK
| | - Elena Prats
- CSIC, Institute for Sustainable Agriculture, Córdoba, Spain.
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15
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Paardekooper LM, van den Bogaart G, Kox M, Dingjan I, Neerincx AH, Bendix MB, Beest MT, Harren FJM, Risby T, Pickkers P, Marczin N, Cristescu SM. Ethylene, an early marker of systemic inflammation in humans. Sci Rep 2017; 7:6889. [PMID: 28761087 PMCID: PMC5537290 DOI: 10.1038/s41598-017-05930-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 06/06/2017] [Indexed: 11/09/2022] Open
Abstract
Ethylene is a major plant hormone mediating developmental processes and stress responses to stimuli such as infection. We show here that ethylene is also produced during systemic inflammation in humans and is released in exhaled breath. Traces of ethylene were detected by laser spectroscopy both in vitro in isolated blood leukocytes exposed to bacterial lipopolysaccharide (LPS) as well as in vivo following LPS administration in healthy volunteers. Exposure to LPS triggers formation of ethylene as a product of lipid peroxidation induced by the respiratory burst. In humans, ethylene was detected prior to the increase of blood levels of inflammatory cytokines and stress-related hormones. Our results highlight that ethylene release is an early and integral component of in vivo lipid peroxidation with important clinical implications as a breath biomarker of bacterial infection.
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Affiliation(s)
- Laurent M Paardekooper
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Geert van den Bogaart
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Matthijs Kox
- Intensive Care Medicine, Nijmegen Institute for Infection, Inflammation and Immunity, Radboud University Medical Center, Nijmegen, The Netherlands
- Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ilse Dingjan
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anne H Neerincx
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Maura B Bendix
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Martin Ter Beest
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frans J M Harren
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Terence Risby
- Department of Environmental Health Sciences, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland, USA
| | - Peter Pickkers
- Intensive Care Medicine, Nijmegen Institute for Infection, Inflammation and Immunity, Radboud University Medical Center, Nijmegen, The Netherlands
- Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Nandor Marczin
- Department of Anaesthesia, Royal Brompton and Harefield NHS Foundation Trust, Harefield, UK
- Section of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Simona M Cristescu
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, The Netherlands.
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16
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Giraud X, Le-Dong NN, Hogben K, Martinot JB. The measurement of DLNO and DLCO: A manufacturer's perspective. Respir Physiol Neurobiol 2017; 241:36-44. [PMID: 28214604 DOI: 10.1016/j.resp.2017.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/06/2017] [Accepted: 02/10/2017] [Indexed: 02/01/2023]
Abstract
The simultaneous measurement of the lung transfer factor for carbon monoxide (DLCO) and nitric oxide (DLNO) is now available as a powerful method for studying the alveolar-capillary gas exchange. However, application of the DLNO-CO technique in daily settings is still limited by some technical drawbacks. This paper provides a manufacturer's overview of the measuring principles, technical challenges and current available solutions for implementing the DLNO-CO measurement in to a marketed device. This includes the recent developments in technology for NO sensors, latest findings on NO uptake and new statistical methods.
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Affiliation(s)
- X Giraud
- Medisoft-MGCD, Sorinnes, Belgium
| | - N N Le-Dong
- RespiSom Private Research Medical Center, Namur, Belgium.
| | - K Hogben
- Medisoft-MGCD, Sorinnes, Belgium
| | - J B Martinot
- CHU-UCL Namur, Place Louise Godin 15, 5000, Namur, Belgium
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17
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Schwaighofer A, Brandstetter M, Lendl B. Quantum cascade lasers (QCLs) in biomedical spectroscopy. Chem Soc Rev 2017; 46:5903-5924. [DOI: 10.1039/c7cs00403f] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review focuses on the recent applications of QCLs in mid-IR spectroscopy of clinically relevant samples.
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Affiliation(s)
- Andreas Schwaighofer
- Institute of Chemical Technologies and Analytics
- Vienna University of Technology
- 1060 Vienna
- Austria
| | | | - Bernhard Lendl
- Institute of Chemical Technologies and Analytics
- Vienna University of Technology
- 1060 Vienna
- Austria
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18
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Bisson MMA, Kessenbrock M, Müller L, Hofmann A, Schmitz F, Cristescu SM, Groth G. Peptides interfering with protein-protein interactions in the ethylene signaling pathway delay tomato fruit ripening. Sci Rep 2016; 6:30634. [PMID: 27477591 PMCID: PMC4967898 DOI: 10.1038/srep30634] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 07/07/2016] [Indexed: 01/18/2023] Open
Abstract
The plant hormone ethylene is involved in the regulation of several processes with high importance for agricultural applications, e.g. ripening, aging and senescence. Previous work in our group has identified a small peptide (NOP-1) derived from the nuclear localization signal of the Arabidopsis ethylene regulator ETHYLENE INSENSITIVE-2 (EIN2) C-terminal part as efficient inhibitor of ethylene responses. Here, we show that NOP-1 is also able to efficiently disrupt EIN2-ETR1 complex formation in tomato, indicating that the NOP-1 inhibition mode is conserved across plant species. Surface application of NOP-1 on green tomato fruits delays ripening similar to known inhibitors of ethylene perception (MCP) and ethylene biosynthesis (AVG). Fruits treated with NOP-1 showed similar ethylene production as untreated controls underlining that NOP-1 blocks ethylene signaling by targeting an essential interaction in this pathway, while having no effect on ethylene biosynthesis.
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Affiliation(s)
- Melanie M. A. Bisson
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
| | - Mareike Kessenbrock
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
| | - Lena Müller
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
| | - Alexander Hofmann
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
| | - Florian Schmitz
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
| | - Simona M. Cristescu
- Department of Molecular and Laser Physics, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Georg Groth
- Biochemical Plant Physiology, Heinrich-Heine-University Düsseldorf, D-40204 Düsseldorf, Germany
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Sivakumaran A, Akinyemi A, Mandon J, Cristescu SM, Hall MA, Harren FJM, Mur LAJ. ABA Suppresses Botrytis cinerea Elicited NO Production in Tomato to Influence H2O2 Generation and Increase Host Susceptibility. FRONTIERS IN PLANT SCIENCE 2016; 7:709. [PMID: 27252724 PMCID: PMC4879331 DOI: 10.3389/fpls.2016.00709] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 05/09/2016] [Indexed: 05/05/2023]
Abstract
Abscisic acid (ABA) production has emerged a susceptibility factor in plant-pathogen interactions. This work examined the interaction of ABA with nitric oxide (NO) in tomato following challenge with the ABA-synthesizing pathogen, Botrytis cinerea. Trace gas detection using a quantum cascade laser detected NO production within minutes of challenge with B. cinerea whilst photoacoustic laser detection detected ethylene production - an established mediator of defense against this pathogen - occurring after 6 h. Application of the NO generation inhibitor N-Nitro-L-arginine methyl ester (L-NAME) suppressed both NO and ethylene production and resistance against B. cinerea. The tomato mutant sitiens fails to accumulate ABA, shows increased resistance to B. cinerea and we noted exhibited elevated NO and ethylene production. Exogenous application of L-NAME or ABA reduced NO production in sitiens and reduced resistance to B. cinerea. Increased resistance to B. cinerea in sitiens have previously been linked to increased reactive oxygen species (ROS) generation but this was reduced in both L-NAME and ABA-treated sitiens. Taken together, our data suggests that ABA can decreases resistance to B. cinerea via reduction of NO production which also suppresses both ROS and ethylene production.
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Affiliation(s)
- Anushen Sivakumaran
- Molecular Plant Pathology Group, Institute of Biological, Environmental and Rural Sciences, Aberystwyth UniversityAberystwyth, UK
| | - Aderemi Akinyemi
- Molecular Plant Pathology Group, Institute of Biological, Environmental and Rural Sciences, Aberystwyth UniversityAberystwyth, UK
| | - Julian Mandon
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud UniversityNijmegen, Netherlands
| | - Simona M. Cristescu
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud UniversityNijmegen, Netherlands
| | - Michael A. Hall
- Molecular Plant Pathology Group, Institute of Biological, Environmental and Rural Sciences, Aberystwyth UniversityAberystwyth, UK
| | - Frans J. M. Harren
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud UniversityNijmegen, Netherlands
| | - Luis A. J. Mur
- Molecular Plant Pathology Group, Institute of Biological, Environmental and Rural Sciences, Aberystwyth UniversityAberystwyth, UK
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Mandon J, Mur LAJ, Harren FJM, Cristescu SM. Laser-Based Methods for Detection of Nitric Oxide in Plants. Methods Mol Biol 2016; 1424:113-126. [PMID: 27094415 DOI: 10.1007/978-1-4939-3600-7_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nitric oxide (NO) plays an important role in plant signaling and in response to various stress conditions. Therefore, real-time measurements of NO production provide better insights into understanding plant processes and can help developing strategies to improve food production and postharvest quality. Using laser-based spectroscopic methods, sensitive, online, in planta measurements of plant-pathogen interactions are possible. This chapter introduces the basic principle of the optical detectors using different laser sources for accurate monitoring of fast dynamic changes of NO production. Several applications are also presented to demonstrate the suitability of these detectors for detection of NO in plants.
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Affiliation(s)
- Julien Mandon
- Department of Molecular and Laser Physics, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Luis A J Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Penglais Campus, Edward Llywd Building, Aberystwyth, Wales, SY23 3DA, UK
| | - Frans J M Harren
- Department of Molecular and Laser Physics, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Simona M Cristescu
- Department of Molecular and Laser Physics, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.
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21
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Li P, Li Y, Feng J, Zhang K. Theoretical and experimental investigation of singly resonant optical parametric oscillator under double-pass pumping. APPLIED OPTICS 2015; 54:4374-4379. [PMID: 25967491 DOI: 10.1364/ao.54.004374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 03/15/2015] [Indexed: 06/04/2023]
Abstract
The singly resonant optical parametric oscillator (SRO) under double-pass pumping in a two-mirror linear cavity is investigated theoretically and experimentally. Different output couplers are used in the periodically poled lithium niobate based SRO to optimize the extracted signal output. When the 2.5% output coupler is used, a pump threshold as low as 3.7 W is achieved, and 6.2 W of signal at 1.56 μm with the linewidth of 62.5 kHz is obtained at pump power of 14.5 W. The measured signal frequency drift and peak-to-peak power fluctuation are less than ±40 MHz and ±0.9% in a given 1 h, respectively.
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El-Maarouf-Bouteau H, Sajjad Y, Bazin J, Langlade N, Cristescu SM, Balzergue S, Baudouin E, Bailly C. Reactive oxygen species, abscisic acid and ethylene interact to regulate sunflower seed germination. PLANT, CELL & ENVIRONMENT 2015; 38:364-74. [PMID: 24811898 DOI: 10.1111/pce.12371] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 04/24/2014] [Accepted: 04/27/2014] [Indexed: 05/06/2023]
Abstract
Sunflower (Helianthus annuus L.) seed dormancy is regulated by reactive oxygen species (ROS) and can be alleviated by incubating dormant embryos in the presence of methylviologen (MV), a ROS-generating compound. Ethylene alleviates sunflower seed dormancy whereas abscisic acid (ABA) represses germination. The purposes of this study were to identify the molecular basis of ROS effect on seed germination and to investigate their possible relationship with hormone signalling pathways. Ethylene treatment provoked ROS generation in embryonic axis whereas ABA had no effect on their production. The beneficial effect of ethylene on germination was lowered in the presence of antioxidant compounds, and MV suppressed the inhibitory effect of ABA. MV treatment did not alter significantly ethylene nor ABA production during seed imbibition. Microarray analysis showed that MV treatment triggered differential expression of 120 probe sets (59 more abundant and 61 less abundant genes), and most of the identified transcripts were related to cell signalling components. Many transcripts less represented in MV-treated seeds were involved in ABA signalling, thus suggesting an interaction between ROS and ABA signalling pathways at the transcriptional level. Altogether, these results shed new light on the crosstalk between ROS and plant hormones in seed germination.
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Zeil P, Thilmann N, Pasiskevicius V, Laurell F. High-power, single-frequency, continuous-wave optical parametric oscillator employing a variable reflectivity volume Bragg grating. OPTICS EXPRESS 2014; 22:29907-29913. [PMID: 25606920 DOI: 10.1364/oe.22.029907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A continuous-wave singly-resonant optical parametric oscillator (SRO) with an optimum extraction efficiency, that can be adjusted independent of the pump power, is demonstrated. The scheme employs a variable-reflectivity volume Bragg grating (VBG) as the output coupler of a ring cavity, omitting any additional intra-cavity elements. In this configuration, we obtained a 75%-efficient SRO with a combined signal (19 W @ 1.55 µm) and idler (11 W @ 3.4 µm) output power of 30 W.
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Chen B, Sun YR, Zhou ZY, Chen J, Liu AW, Hu SM. Ultrasensitive, self-calibrated cavity ring-down spectrometer for quantitative trace gas analysis. APPLIED OPTICS 2014; 53:7716-7723. [PMID: 25402995 DOI: 10.1364/ao.53.007716] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A cavity ring-down spectrometer is built for trace gas detection using telecom distributed feedback (DFB) diode lasers. The longitudinal modes of the ring-down cavity are used as frequency markers without active-locking either the laser or the high-finesse cavity. A control scheme is applied to scan the DFB laser frequency, matching the cavity modes one by one in sequence and resulting in a correct index at each recorded spectral data point, which allows us to calibrate the spectrum with a relative frequency precision of 0.06 MHz. Besides the frequency precision of the spectrometer, a sensitivity (noise-equivalent absorption) of 4×10-11 cm-1 Hz-1/2 has also been demonstrated. A minimum detectable absorption coefficient of 5×10-12 cm-1 has been obtained by averaging about 100 spectra recorded in 2 h. The quantitative accuracy is tested by measuring the CO2 concentrations in N2 samples prepared by the gravimetric method, and the relative deviation is less than 0.3%. The trace detection capability is demonstrated by detecting CO2 of ppbv-level concentrations in a high-purity nitrogen gas sample. Simple structure, high sensitivity, and good accuracy make the instrument very suitable for quantitative trace gas analysis.
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Corbineau F, Xia Q, Bailly C, El-Maarouf-Bouteau H. Ethylene, a key factor in the regulation of seed dormancy. FRONTIERS IN PLANT SCIENCE 2014; 5:539. [PMID: 25346747 PMCID: PMC4193209 DOI: 10.3389/fpls.2014.00539] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 09/22/2014] [Indexed: 05/04/2023]
Abstract
Ethylene is an important component of the gaseous environment, and regulates numerous plant developmental processes including seed germination and seedling establishment. Dormancy, the inability to germinate in apparently favorable conditions, has been demonstrated to be regulated by the hormonal balance between abscisic acid (ABA) and gibberellins (GAs). Ethylene plays a key role in dormancy release in numerous species, the effective concentrations allowing the germination of dormant seeds ranging between 0.1 and 200 μL L(-1). Studies using inhibitors of ethylene biosynthesis or of ethylene action and analysis of mutant lines altered in genes involved in the ethylene signaling pathway (etr1, ein2, ain1, etr1, and erf1) demonstrate the involvement of ethylene in the regulation of germination and dormancy. Ethylene counteracts ABA effects through a regulation of ABA metabolism and signaling pathways. Moreover, ethylene insensitive mutants in Arabidopsis are more sensitive to ABA and the seeds are more dormant. Numerous data also show an interaction between ABA, GAs and ethylene metabolism and signaling pathways. It has been increasingly demonstrated that reactive oxygen species (ROS) may play a significant role in the regulation of seed germination interacting with hormonal signaling pathways. In the present review the responsiveness of seeds to ethylene will be described, and the key role of ethylene in the regulation of seed dormancy via a crosstalk between hormones and other signals will be discussed.
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Affiliation(s)
- Françoise Corbineau
- Biologie des Semences (Seed Biology), UMR7622 CNRS-UPMC, Sorbonne Universités – Université Pierre et Marie Curie-ParisParis, France
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Cristescu SM, Kiss R, Hekkert STL, Dalby M, Harren FJM, Risby TH, Marczin N. Real-time monitoring of endogenous lipid peroxidation by exhaled ethylene in patients undergoing cardiac surgery. Am J Physiol Lung Cell Mol Physiol 2014; 307:L509-15. [PMID: 25128523 DOI: 10.1152/ajplung.00168.2014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Pulmonary and systemic organ injury produced by oxidative stress including lipid peroxidation is a fundamental tenet of ischemia-reperfusion injury, inflammatory response to cardiac surgery, and cardiopulmonary bypass (CPB) but is not routinely measured in a surgically relevant time frame. To initiate a paradigm shift toward noninvasive and real-time monitoring of endogenous lipid peroxidation, we have explored pulmonary excretion and dynamism of exhaled breath ethylene during cardiac surgery to test the hypothesis that surgical technique and ischemia-reperfusion triggers lipid peroxidation. We have employed laser photoacoustic spectroscopy to measure real-time trace concentrations of ethylene from the patient breath and from the CPB machine. Patients undergoing aortic or mitral valve surgery-requiring CPB (n = 15) or off-pump coronary artery bypass surgery (OPCAB) (n = 7) were studied. Skin and tissue incision by diathermy caused striking (> 30-fold) increases in exhaled ethylene resulting in elevated levels until CPB. Gaseous ethylene in the CPB circuit was raised upon the establishment of CPB (> 10-fold) and decreased over time. Reperfusion of myocardium and lungs did not appear to enhance ethylene levels significantly. During OPCAB surgery, we have observed increased ethylene in 16 of 30 documented reperfusion events associated with coronary and aortic anastomoses. Therefore, novel real-time monitoring of endogenous lipid peroxidation in the intraoperative setting provides unparalleled detail of endogenous and surgery-triggered production of ethylene. Diathermy and unprotected regional myocardial ischemia and reperfusion are the most significant contributors to increased ethylene.
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Affiliation(s)
- Simona M Cristescu
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Rudolf Kiss
- Department of Anaesthesia, Royal Brompton and Harefield NHS Foundation Trust, Harefield, UK; Section of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | | | - Miles Dalby
- Department of Cardiology, Royal Brompton and Harefield NHS Foundation Trust, Harefield, UK
| | - Frans J M Harren
- Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Nijmegen, the Netherlands
| | - Terence H Risby
- Department of Environmental Health Sciences, Bloomberg School of Public Health, The Johns Hopkins University, Baltimore, Maryland; and
| | - Nandor Marczin
- Department of Anaesthesia, Royal Brompton and Harefield NHS Foundation Trust, Harefield, UK; Section of Anaesthesia, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK; Centre of Anaesthesia and Intensive Care, Semmelweis University, Budapest, Hungary
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Tarkowská D, Novák O, Floková K, Tarkowski P, Turečková V, Grúz J, Rolčík J, Strnad M. Quo vadis plant hormone analysis? PLANTA 2014; 240:55-76. [PMID: 24677098 DOI: 10.1007/s00425-014-2063-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 03/08/2014] [Indexed: 05/04/2023]
Abstract
Plant hormones act as chemical messengers in the regulation of myriads of physiological processes that occur in plants. To date, nine groups of plant hormones have been identified and more will probably be discovered. Furthermore, members of each group may participate in the regulation of physiological responses in planta both alone and in concert with members of either the same group or other groups. The ideal way to study biochemical processes involving these signalling molecules is 'hormone profiling', i.e. quantification of not only the hormones themselves, but also their biosynthetic precursors and metabolites in plant tissues. However, this is highly challenging since trace amounts of all of these substances are present in highly complex plant matrices. Here, we review advances, current trends and future perspectives in the analysis of all currently known plant hormones and the associated problems of extracting them from plant tissues and separating them from the numerous potentially interfering compounds.
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Affiliation(s)
- Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR and Palacký University, Šlechtitelů 11, 783 71, Olomouc, Czech Republic,
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Yordanova ZP, Kapchina—Toteva VM, Woltering EJ, Cristescu SM, Harren FJ, Iakimova ET. Mastoparan-Induced Cell Death Signalling inChlamydomonas Reinhardtii. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10818528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Hebelstrup KH, Shah JK, Simpson C, Schjoerring JK, Mandon J, Cristescu SM, Harren FJM, Christiansen MW, Mur LAJ, Igamberdiev AU. An assessment of the biotechnological use of hemoglobin modulation in cereals. PHYSIOLOGIA PLANTARUM 2014; 150:593-603. [PMID: 24118006 DOI: 10.1111/ppl.12115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 09/30/2013] [Accepted: 10/01/2013] [Indexed: 05/11/2023]
Abstract
Non-symbiotic hemoglobin (nsHb) genes are ubiquitous in plants, but their biological functions have mostly been studied in model plant species rather than in crops. nsHb influences cell signaling and metabolism by modulating the levels of nitric oxide (NO). Class 1 nsHb is upregulated under hypoxia and is involved in various biotic and abiotic stress responses. Ectopic overexpression of nsHb in Arabidopsis thaliana accelerates development, whilst targeted overexpression in seeds can increase seed yield. Such observations suggest that manipulating nsHb could be a valid biotechnological target. We studied the effects of overexpression of class 1 nsHb in the monocotyledonous crop plant barley (Hordeum vulgare cv. Golden Promise). nsHb was shown to be involved in NO metabolism in barley, as ectopic overexpression reduced the amount of NO released during hypoxia. Further, as in Arabidopsis, nsHb overexpression compromised basal resistance toward pathogens in barley. However, unlike Arabidopsis, nsHb ectopic overexpression delayed growth and development in barley, and seed specific overexpression reduced seed yield. Thus, nsHb overexpression in barley does not seem to be an efficient strategy for increasing yield in cereal crops. These findings highlight the necessity for using actual crop plants rather than laboratory model plants when assessing the effects of biotechnological approaches to crop improvement.
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Affiliation(s)
- Kim H Hebelstrup
- Department of Molecular Biology and Genetics, Aarhus University, Flakkebjerg, Denmark
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30
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Patimisco P, Scamarcio G, Tittel FK, Spagnolo V. Quartz-enhanced photoacoustic spectroscopy: a review. SENSORS (BASEL, SWITZERLAND) 2014; 14:6165-206. [PMID: 24686729 PMCID: PMC4029643 DOI: 10.3390/s140406165] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/18/2014] [Accepted: 03/21/2014] [Indexed: 11/16/2022]
Abstract
A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS) for the sensitive and selective quantification of molecular trace gas species with resolved spectroscopic features is reported. The basis of the QEPAS technique, the technology available to support this field in terms of key components, such as light sources and quartz-tuning forks and the recent developments in detection methods and performance limitations will be discussed. Furthermore, different experimental QEPAS methods such as: on-beam and off-beam QEPAS, quartz-enhanced evanescent wave photoacoustic detection, modulation-cancellation approach and mid-IR single mode fiber-coupled sensor systems will be reviewed and analysed. A QEPAS sensor operating in the THz range, employing a custom-made quartz-tuning fork and a THz quantum cascade laser will be also described. Finally, we evaluated data reported during the past decade and draw relevant and useful conclusions from this analysis.
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Affiliation(s)
- Pietro Patimisco
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
| | - Gaetano Scamarcio
- Dipartimento Interateneo di Fisica, Università degli studi di Bari Aldo Moro e Politecnico di Bari, Via Amendola 173, Bari, I-70126, Italy.
| | - Frank K Tittel
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
| | - Vincenzo Spagnolo
- Dipartimento Interateneo di Fisica, Università degli studi di Bari Aldo Moro e Politecnico di Bari, Via Amendola 173, Bari, I-70126, Italy.
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Bulens I, Van de Poel B, Hertog MLATM, Cristescu SM, Harren FJM, De Proft MP, Geeraerd AH, Nicolai BM. Dynamic changes of the ethylene biosynthesis in 'Jonagold' apple. PHYSIOLOGIA PLANTARUM 2014; 150:161-173. [PMID: 23957643 DOI: 10.1111/ppl.12084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 03/21/2013] [Accepted: 06/10/2013] [Indexed: 06/02/2023]
Abstract
In this study, the short-term and dynamic changes of the ethylene biosynthesis of Jonagold apple during and after application of controlled atmosphere (CA) storage conditions were quantified using a systems biology approach. Rapid responses to imposed temperature and atmospheric conditions were captured by continuous online photoacoustic ethylene measurements. Discrete destructive sampling was done to understand observed changes of ethylene biosynthesis at the transcriptional, translational and metabolic level. Application of the ethylene inhibitor 1-methylcyclopropene (1-MCP) allowed for the discrimination between ethylene-mediated changes and ethylene-independent changes related to the imposed conditions. Online ethylene measurements showed fast and slower responses during and after application of CA conditions. The changes in 1-aminocyclopropane-1-carboxylate synthase (ACS) activity were most correlated with changes in ACS1 expression and regulated the cold-induced increase in ethylene production during the early chilling phase. Transcription of ACS3 was found ethylene independent and was triggered upon warming of CA-stored apples. Increased expression of ACO1 during shelf life led to a strong increase in 1-aminocyclopropane-1-carboxylate oxidase (ACO) activity, required for the exponential production of ethylene during system 2. Expression of ACO2 and ACO3 was upregulated in 1-MCP-treated fruit showing a negative correlation with ethylene production. ACO activity never became rate limiting.
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Affiliation(s)
- Inge Bulens
- Division of Mechatronics, Biostatistics and Sensors (MeBioS), Department of Biosystems (BIOSYST), Katholieke Universiteit Leuven, Willem de Croylaan 42, bus 2428, B-3001, Leuven, Belgium
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Hoogstrate SW, van Bussel LJA, Cristescu SM, Cator E, Mariani C, Vriezen WH, Rieu I. Tomato ACS4 is necessary for timely start of and progression through the climacteric phase of fruit ripening. FRONTIERS IN PLANT SCIENCE 2014; 5:466. [PMID: 25278945 PMCID: PMC4165129 DOI: 10.3389/fpls.2014.00466] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/27/2014] [Indexed: 05/11/2023]
Abstract
Climacteric fruit ripening, as it occurs in many fruit crops, depends on a rapid, autocatalytic increase in ethylene production. This agriculturally important process has been studied extensively, with tomato simultaneously acting both as a model species and target crop for modification. In tomato, the ethylene biosynthetic genes ACC SYNTHASE2 (ACS2) and ACS4 are highly expressed during fruit ripening, with a combined loss of both ACS2 and ACS4 activity preventing generation of the ethylene burst necessary for fruit ripening. However, the individual roles and importance of ACS2 and ACS4 have not been determined. In this study, we examined specifically the role of ACS4 by comparing the phenotype of an acs4 mutant firstly with that of the wild-type, and secondly with two novel ripening-inhibitor (rin) mutants. Ethylene production during ripening was significantly reduced in both acs4-1, and rin lines, with rin genotypes showing the weaker ethylene burst. Also i) the time between anthesis and the start of fruit ripening and ii) the time required to progress through ripening were significantly longer in acs4-1 than in the wild type, but shorter than in the strongest rin mutant. The delay in ripening was reflected in the lower expression of ripening-related transcripts during the mature green and light red ripening stages. Furthermore, expression of ACS2 and ACS4 was strongly dependent on a functional RIN gene, while ACS2 expression was largely independent of ACS4. Altogether, we show that ACS4 is necessary for normal progression of tomato fruit ripening and that mutation of this gene may provide a useful means for altering ripening traits.
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Affiliation(s)
- Suzanne W. Hoogstrate
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud UniversityNijmegen, Netherlands
| | - Lambertus J. A. van Bussel
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud UniversityNijmegen, Netherlands
| | - Simona M. Cristescu
- Department of Molecular and Laser Physics, Institute for Molecules and Materials, Radboud UniversityNijmegen, Netherlands
| | - Eric Cator
- Department of Applied Stochastics, Institute for Mathematics, Astrophysics and Particle Physics, Radboud UniversityNijmegen, Netherlands
| | - Celestina Mariani
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud UniversityNijmegen, Netherlands
| | - Wim H. Vriezen
- Molecular Breeding, Bayer Crop Science Vegetable SeedsNunhem, Netherlands
| | - Ivo Rieu
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud UniversityNijmegen, Netherlands
- *Correspondence: Ivo Rieu, Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University, Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, Netherlands e-mail:
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Tuboly E, Szabó A, Erős G, Mohácsi Á, Szabó G, Tengölics R, Rákhely G, Boros M. Determination of endogenous methane formation by photoacoustic spectroscopy. J Breath Res 2013; 7:046004. [PMID: 24185326 DOI: 10.1088/1752-7155/7/4/046004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Moniuszko G, Skoneczny M, Zientara-Rytter K, Wawrzyńska A, Głów D, Cristescu SM, Harren FJM, Sirko A. Tobacco LSU-like protein couples sulphur-deficiency response with ethylene signalling pathway. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:5173-82. [PMID: 24085579 PMCID: PMC3830492 DOI: 10.1093/jxb/ert309] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Most genes from the plant-specific family encoding Response to Low Sulphur (LSU)-like proteins are strongly induced in sulphur (S)-deficient conditions. The exact role of these proteins remains unclear; however, some data suggest their importance for plants' adjustment to nutrient deficiency and other environmental stresses. This work established that the regulation of ethylene signalling is a part of plants' response to S deficiency and showed the interaction between UP9C, a tobacco LSU family member, and one of the tobacco isoforms of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO2A). Increase in ethylene level induced by S deficiency does not take place in tobacco plants with UP9C expressed in an antisense orientation. Based on transcriptomics data, this work also demonstrated that the majority of tobacco's response to S deficiency is misregulated in plants expressing UP9C-antisense. A link between response to S deficiency, ethylene sensing, and LSU-like proteins was emphasized by changes in expression of the genes encoding ethylene receptors and F-box proteins specific for the ethylene pathway.
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Affiliation(s)
- Grzegorz Moniuszko
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Marek Skoneczny
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5A, 02-106 Warsaw, Poland
| | | | - Anna Wawrzyńska
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Dawid Głów
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5A, 02-106 Warsaw, Poland
| | - Simona M. Cristescu
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, The Netherlands
| | - Frans J. M. Harren
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, The Netherlands
| | - Agnieszka Sirko
- Institute of Biochemistry and Biophysics PAS, Pawinskiego 5A, 02-106 Warsaw, Poland
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35
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Iakimova ET, Michaeli R, Woltering EJ. Involvement of phospholipase D-related signal transduction in chemical-induced programmed cell death in tomato cell cultures. PROTOPLASMA 2013; 250:1169-1183. [PMID: 23604388 DOI: 10.1007/s00709-013-0497-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 02/27/2013] [Indexed: 06/02/2023]
Abstract
Phospholipase D (PLD) and its product phosphatidic acid (PA) are incorporated in a complex metabolic network in which the individual PLD isoforms are suggested to regulate specific developmental and stress responses, including plant programmed cell death (PCD). Despite the accumulating knowledge, the mechanisms through which PLD/PA operate during PCD are still poorly understood. In this work, the role of PLDα1 in PCD and the associated caspase-like proteolysis, ethylene and hydrogen peroxide (H(2)O(2)) synthesis in tomato suspension cells was studied. Wild-type (WT) and PLDα1-silenced cell lines were exposed to the cell death-inducing chemicals camptothecin (CPT), fumonisin B1 (FB1) and CdSO(4). A range of caspase inhibitors effectively suppressed CPT-induced PCD in WT cells, but failed to alleviate cell death in PLDα1-deficient cells. Compared to WT, in CPT-treated PLDα1 mutant cells, reduced cell death and decreased production of H(2)O(2) were observed. Application of ethylene significantly enhanced CPT-induced cell death both in WT and PLDα1 mutants. Treatments with the PA derivative lyso-phosphatidic acid and mastoparan (agonist of PLD/PLC signalling downstream of G proteins) caused severe cell death. Inhibitors, specific to PLD and PLC, remarkably decreased the chemical-induced cell death. Taken together with our previous findings, the results suggest that PLDα1 contributes to caspase-like-dependent cell death possibly communicated through PA, reactive oxygen species and ethylene. The dead cells expressed morphological features of PCD such as protoplast shrinkage and nucleus compaction. The presented findings reveal novel elements of PLD/PA-mediated cell death response and suggest that PLDα1 is an important factor in chemical-induced PCD signal transduction.
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Affiliation(s)
- Elena T Iakimova
- Plant Sciences Group, Horticultural Supply Chains, Wageningen University, P.O. Box 630, 6700 AP, Wageningen, The Netherlands
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36
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ten Oever J, Mandon J, Netea MG, van Deuren M, Harren FJM, Cristescu SM, Pickkers P. Pulmonary infection, and not systemic inflammation, accounts for increased concentrations of exhaled nitric oxide in patients with septic shock. J Breath Res 2013; 7:036003. [PMID: 23867579 DOI: 10.1088/1752-7155/7/3/036003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nitric oxide (NO) is a key mediator in the pathophysiology of septic shock that can be measured in exhaled breath. To assess whether a pulmonary infection itself or systemic inflammation is responsible for NO production, we determined exhaled NO in ventilated patients with respiratory and non-respiratory septic shock and compared it with the concentration in ventilated intensive care patients without systemic inflammation. In addition, the change of NO production over time and correlations with haemodynamic instability were evaluated. The controls without systemic inflammation, as witnessed by the absence of systemic inflammatory response syndrome criteria and low levels of interleukin-6, had similar concentrations of NO as the patients with non-respiratory septic shock. The respiratory sepsis patients exhaled more NO than the non-respiratory sepsis patients (p = 0.05), and a time dependent decline in time in both groups (p = 0.04). Exhaled NO did not correlate with markers of disease severity, systemic inflammation and haemodynamic instability. These data indicate that the infected lungs are the source of exhaled NO.
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Affiliation(s)
- J ten Oever
- Department of Internal Medicine, Radboud University Nijmegen Medical Centre, The Netherlands.
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37
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Cristescu SM, Mandon J, Harren FJM, Meriläinen P, Högman M. Methods of NO detection in exhaled breath. J Breath Res 2013; 7:017104. [PMID: 23445766 DOI: 10.1088/1752-7155/7/1/017104] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
There is still an unexplored potential for exhaled nitric oxide (NO) in many clinical applications. This study presents an overview of the currently available methods for monitoring NO in exhaled breath and the use of the modelling of NO production and transport in the lung in clinical practice. Three technologies are described, namely chemiluminescence, electrochemical sensing and laser-based detection with their advantages and limitations. Comparisons are made in terms of sensitivity, time response, size, costs and suitability for clinical purposes. The importance of the flow rate for NO sampling is discussed from the perspective of the recent recommendations for standardized procedures for online and offline NO measurement. The measurement of NO at one flow rate, such as 50 ml s(-1), can neither determine the alveolar site/peripheral contribution nor quantify the difference in NO diffusion from the airways walls. The use of NO modelling (linear or non-linear approach) can solve this problem and provide useful information about the source of NO. This is of great value in diagnostic procedures of respiratory diseases and in treatment with anti-inflammatory drugs.
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Affiliation(s)
- S M Cristescu
- Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands.
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38
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Behrendt L, Staal M, Cristescu SM, Harren FJ, Schliep M, Larkum AW, Kühl M. Reactive oxygen production induced by near-infrared radiation in three strains of the Chl d-containing cyanobacterium Acaryochloris marina. F1000Res 2013; 2:44. [PMID: 24555034 PMCID: PMC3894803 DOI: 10.12688/f1000research.2-44.v2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/10/2013] [Indexed: 11/20/2022] Open
Abstract
Cyanobacteria in the genus
Acaryochloris have largely exchanged Chl
a with Chl
d, enabling them to harvest near-infrared-radiation (NIR) for oxygenic photosynthesis, a biochemical pathway prone to generate reactive oxygen species (ROS). In this study, ROS production under different light conditions was quantified in three
Acaryochloris strains (MBIC11017, HICR111A and the novel strain CRS) using a real-time ethylene detector in conjunction with addition of 2-keto-4-thiomethylbutyric acid, a substrate that is converted to ethylene when reacting with certain types of ROS. In all strains, NIR was found to generate less ROS than visible light (VIS). More ROS was generated if strains MBIC11017 and HICR111A were adapted to NIR and then exposed to VIS, while strain CRS demonstrated the opposite behavior. This is the very first study of ROS generation and suggests that
Acaryochloris can avoid a considerable amount of light-induced stress by using NIR instead of VIS for its photosynthesis, adding further evolutionary arguments to their widespread appearance.
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Affiliation(s)
- Lars Behrendt
- Marine Biology Section, Department of Biology, University of Copenhagen, Helsingør, DK-3000, Denmark ; Section for Microbiology, Department of Biology, University of Copenhagen, Sølvgade, DK-1307, Denmark
| | - Marc Staal
- Marine Biology Section, Department of Biology, University of Copenhagen, Helsingør, DK-3000, Denmark
| | - Simona M Cristescu
- Life Science Trace Gas Facility, Radboud University Nijmegen, Heyendaalseweg, 6525 AJ, Netherlands
| | - Frans Jm Harren
- Life Science Trace Gas Facility, Radboud University Nijmegen, Heyendaalseweg, 6525 AJ, Netherlands
| | - Martin Schliep
- Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Anthony Wd Larkum
- Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Michael Kühl
- Marine Biology Section, Department of Biology, University of Copenhagen, Helsingør, DK-3000, Denmark ; Plant Functional Biology and Climate Change Cluster, School of the Environment, University of Technology Sydney, Sydney, NSW 2007, Australia ; Singapore Centre on Environmental Life Sciences Engineering, School of Biological Sciences, Nanyang Technological University, Nanyang, Singapore
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Gupta KJ, Brotman Y, Segu S, Zeier T, Zeier J, Persijn ST, Cristescu SM, Harren FJM, Bauwe H, Fernie AR, Kaiser WM, Mur LAJ. The form of nitrogen nutrition affects resistance against Pseudomonas syringae pv. phaseolicola in tobacco. JOURNAL OF EXPERIMENTAL BOTANY 2013; 64:553-68. [PMID: 23230025 PMCID: PMC3542047 DOI: 10.1093/jxb/ers348] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Different forms of nitrogen (N) fertilizer affect disease development; however, this study investigated the effects of N forms on the hypersensitivity response (HR)-a pathogen-elicited cell death linked to resistance. HR-eliciting Pseudomonas syringae pv. phaseolicola was infiltrated into leaves of tobacco fed with either NO₃⁻ or NH₄⁺. The speed of cell death was faster in NO₃⁻-fed compared with NH₄⁺-fed plants, which correlated, respectively, with increased and decreased resistance. Nitric oxide (NO) can be generated by nitrate reductase (NR) to influence the formation of the HR. NO generation was reduced in NH₄⁺-fed plants where N assimilation bypassed the NR step. This was similar to that elicited by the disease-forming P. syringae pv. tabaci strain, further suggesting that resistance was compromised with NH₄⁺ feeding. PR1a is a biomarker for the defence signal salicylic acid (SA), and expression was reduced in NH₄⁺-fed compared with NO₃⁻ fed plants at 24h after inoculation. This pattern correlated with actual SA measurements. Conversely, total amino acid, cytosolic and apoplastic glucose/fructose and sucrose were elevated in - treated plants. Gas chromatography/mass spectroscopy was used to characterize metabolic events following different N treatments. Following NO₃⁻ nutrition, polyamine biosynthesis was predominant, whilst after NH₄⁺ nutrition, flux appeared to be shifted towards the production of 4-aminobutyric acid. The mechanisms whereby feeding enhances SA, NO, and polyamine-mediated HR-linked defence whilst these are compromised with NH₄⁺, which also increases the availability of nutrients to pathogens, are discussed.
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Affiliation(s)
- Kapuganti J. Gupta
- Department of Plant Physiology, University of Rostock, Albert Einstein Str 3, D-18059, Rostock, Germany
| | - Yariv Brotman
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Golm-Potsdam, Germany
| | - Shruthi Segu
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Golm-Potsdam, Germany
| | - Tatiana Zeier
- Institute for Plant Molecular Ecophysiology, Heinrich-Heine-Universität Universitätsstrasse1 40225 Düsseldorf
| | - Jürgen Zeier
- Institute for Plant Molecular Ecophysiology, Heinrich-Heine-Universität Universitätsstrasse1 40225 Düsseldorf
| | - Stefan T. Persijn
- Dutch Metrology Institute, VSL, Thijsseweg 11, 2629 JA Delft, The Netherlands
| | - Simona M. Cristescu
- Molecular and Laser Physics, Radboud University Nijmegen, 6500 GL Nijmegen, The Netherlands
| | - Frans J. M. Harren
- Molecular and Laser Physics, Radboud University Nijmegen, 6500 GL Nijmegen, The Netherlands
| | - Hermann Bauwe
- Department of Plant Physiology, University of Rostock, Albert Einstein Str 3, D-18059, Rostock, Germany
| | - Alisdair R. Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, D-14476 Golm-Potsdam, Germany
| | - Werner M. Kaiser
- Lehrstuhl Botanik I, Julius-von-Sachs-Institut für Biowissenschaften, Universität Würzburg, Julius-von-Sachs-Platz 2, D-97082 Würzburg, Germany
| | - Luis A. J. Mur
- Aberystwyth University, Institute of Environmental and Rural Science, Edward Llwyd Building, Aberystwyth, UK, SY23 3DA
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40
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Harren FJM, Cristescu SM. Online, real-time detection of volatile emissions from plant tissue. AOB PLANTS 2013; 5:plt003. [PMID: 23429357 PMCID: PMC3578185 DOI: 10.1093/aobpla/plt003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Accepted: 01/04/2013] [Indexed: 05/18/2023]
Abstract
Trace gas monitoring plays an important role in many areas of life sciences ranging from agrotechnology, microbiology, molecular biology, physiology, and phytopathology. In plants, many processes can be followed by their low-concentration gas emission, for compounds such as ethylene, nitric oxide, ethanol or other volatile organic compounds (VOCs). For this, numerous gas-sensing devices are currently available based on various methods. Among them are the online trace gas detection methods; these have attracted much interest in recent years. Laser-based infrared spectroscopy and proton transfer reaction mass spectrometry are the two most widely used methods, thanks to their high sensitivity at the single part per billion level and their response time of seconds. This paper starts with a short description of each method and presents performances within a wide variety of biological applications. Using these methods, the dynamics of trace gases for ethylene, nitric oxide and other VOCs released by plants under different conditions are recorded and analysed under natural conditions. In this way many hypotheses can be tested, revealing the role of the key elements in signalling and action mechanisms in plants.
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41
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Hebelstrup KH, van Zanten M, Mandon J, Voesenek LACJ, Harren FJM, Cristescu SM, Møller IM, Mur LAJ. Haemoglobin modulates NO emission and hyponasty under hypoxia-related stress in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:5581-91. [PMID: 22915746 PMCID: PMC3444272 DOI: 10.1093/jxb/ers210] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Nitric oxide (NO) and ethylene are signalling molecules that are synthesized in response to oxygen depletion. Non-symbiotic plant haemoglobins (Hbs) have been demonstrated to act in roots under oxygen depletion to scavenge NO. Using Arabidopsis thaliana plants, the online emission of NO or ethylene was directly quantified under normoxia, hypoxia (0.1-1.0% O(2)), or full anoxia. The production of both gases was increased with reduced expression of either of the Hb genes GLB1 or GLB2, whereas NO emission decreased in plants overexpressing these genes. NO emission in plants with reduced Hb gene expression represented a major loss of nitrogen equivalent to 0.2mM nitrate per 24h under hypoxic conditions. Hb gene expression was greatly enhanced in flooded roots, suggesting induction by reduced oxygen diffusion. The function could be to limit loss of nitrogen under NO emission. NO reacts with thiols to form S-nitrosylated compounds, and it is demonstrated that hypoxia substantially increased the content of S-nitrosylated compounds. A parallel up-regulation of Hb gene expression in the normoxic shoots of the flooded plants may reflect signal transmission from root to shoot via ethylene and a role for Hb in the shoots. Hb gene expression was correlated with ethylene-induced upward leaf movement (hyponastic growth) but not with hypocotyl growth, which was Hb independent. Taken together the data suggest that Hb can influence flood-induced hyponasty via ethylene-dependent and, possibly, ethylene-independent pathways.
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Affiliation(s)
- Kim H Hebelstrup
- Department of Molecular Biology and Genetics, Aarhus University Forsøgsvej 1, DK-4200 Slagelse Denmark.
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42
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Human biomarkers in breath by photoacoustic spectroscopy. Clin Chim Acta 2012; 413:1171-8. [DOI: 10.1016/j.cca.2012.04.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/04/2012] [Accepted: 04/06/2012] [Indexed: 11/22/2022]
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Mur LAJ, Sivakumaran A, Mandon J, Cristescu SM, Harren FJM, Hebelstrup KH. Haemoglobin modulates salicylate and jasmonate/ethylene-mediated resistance mechanisms against pathogens. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:4375-87. [PMID: 22641422 PMCID: PMC3421983 DOI: 10.1093/jxb/ers116] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 03/19/2012] [Accepted: 03/19/2012] [Indexed: 05/19/2023]
Abstract
Nitric oxide (NO) plays a role in defence against hemibiotrophic pathogens mediated by salicylate (SA) and also necrotrophic pathogens influenced by jasmonate/ethylene (JA/Et). This study examined how NO-oxidizing haemoglobins (Hb) encoded by GLB1, GLB2, and GLB3 in Arabidopsis could influence both defence pathways. The impact of Hb on responses to the hemibiotrophic Pseudomonas syringae pathovar tomato (Pst) AvrRpm1 and the necrotrophic Botrytis cinerea were investigated using glb1, glb2, and glb3 mutant lines and also CaMV 35S GLB1 and GLB2 overexpression lines. In glb1, but not glb2 and glb3, increased resistance was observed to both pathogens but was compromised in the 35S-GLB1. A quantum cascade laser-based sensor measured elevated NO production in glb1 infected with Pst AvrRpm1 and B. cinerea, which was reduced in 35S-GLB1 compared to Col-0. SA accumulation was increased in glb1 and reduced in 35S-GLB1 compared to controls following attack by Pst AvrRpm1. Similarly, JA and Et levels were increased in glb1 but decreased in 35S-GLB1 in response to attack by B. cinerea. Quantitative PCR assays indicated reduced GLB1 expression during challenge with either pathogen, thus this may elevate NO concentration and promote a wide-ranging defence against pathogens.
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Affiliation(s)
- Luis A J Mur
- Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, Wales, SY23 3DA, UK.
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44
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Nitsch L, Kohlen W, Oplaat C, Charnikhova T, Cristescu S, Michieli P, Wolters-Arts M, Bouwmeester H, Mariani C, Vriezen WH, Rieu I. ABA-deficiency results in reduced plant and fruit size in tomato. JOURNAL OF PLANT PHYSIOLOGY 2012; 169:878-83. [PMID: 22424572 DOI: 10.1016/j.jplph.2012.02.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 02/15/2012] [Accepted: 02/16/2012] [Indexed: 05/08/2023]
Abstract
Abscisic acid (ABA) deficient mutants, such as notabilis and flacca, have helped elucidating the role of ABA during plant development and stress responses in tomato (Solanum lycopersicum L.). However, these mutants have only moderately decreased ABA levels. Here we report on plant and fruit development in the more strongly ABA-deficient notabilis/flacca (not/flc) double mutant. We observed that plant growth, leaf-surface area, drought-induced wilting and ABA-related gene expression in the different genotypes were strongly correlated with the ABA levels and thus most strongly affected in the not/flc double mutants. These mutants also had reduced fruit size that was caused by an overall smaller cell size. Lower ABA levels in fruits did not correlate with changes in auxin levels, but were accompanied by higher ethylene evolution rates. This suggests that in a wild-type background ABA stimulates cell enlargement during tomato fruit growth via a negative effect on ethylene synthesis.
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Affiliation(s)
- L Nitsch
- Radboud University Nijmegen, IWWR, Department of Molecular Plant Physiology, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
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Forni C, Braglia R, Harren FJM, Cristescu SM. Stress responses of duckweed (Lemna minor L.) and water velvet (Azolla filiculoides Lam.) to anionic surfactant sodium-dodecyl-sulphate (SDS). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2012; 110-111:107-13. [PMID: 22277247 DOI: 10.1016/j.aquatox.2011.12.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 12/21/2011] [Accepted: 12/23/2011] [Indexed: 05/26/2023]
Abstract
Surfactants are used for several purposes and recently they have attracted the attention for their ability to modify the behavior of other preexistent or co-disposed contaminants, although their use or discharge in wastewaters can represent a real or potential risk for the environment. Lemna minor L. and Azolla filiculoides Lam. are floating aquatic macrophytes, very effective in accumulating several pollutants including sodium dodecyl sulphate (SDS). In this work we evaluated the effects of SDS on these species by determining the stress ethylene production via laser-based trace gas detection, and the activities of enzymes involved in stress response, such as guaiacol peroxidase (G-POD), phenylalanine ammonia-lyase (PAL) and polyphenol-oxidase (PPO). Phenolics content was also determined. The macrophytes were treated with different concentrations of SDS for one week. SDS affected duckweed enzymatic activities and phenol content. While in the fern phenolics amount, PAL, G-POD and PPO activities were not affected by SDS except for 100 ppm SDS, the only concentration that was taken up and not completely degraded. Stress ethylene production was induced only in the fern treated with 50 and 100 ppm SDS.
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Affiliation(s)
- C Forni
- Department of Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica, 00133 Rome, Italy.
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Abstract
Laser-spectrometric methods to derive absolute and traceable carbon monoxide (CO) amount fractions in exhaled human breath could be of advantage for early disease detection as well as for treatment monitoring. As proof-of-principle laboratory experiment, we employed intra-pulse and continuous wave (cw) quantum cascade laser spectroscopy (QCLAS), both at 4.6 μm. Additional experiments were carried out applying cw cavity ring-down spectroscopy (CRDS) with a CO sideband laser and a QCL. We emphasize metrological data quality objectives, thatis, traceability and uncertainty, which could serve as essential benefits to exhaled breath measurements. The results were evaluated and compared on a 100 μmol/mol CO level using the two QCLAS spectrometers, and the cw CO sideband laser CRDS setup. The relative standard uncertainties of the pulsed and the cw QCLAS CO amount fraction results were ±4.8 and ±2.8%, respectively, that from the CO sideband laser CRDS was ±2.7%. Sensitivities down to a 3 nmol/mol CO level were finally demonstrated and quantified by means of cw CRDS equipped with a QCL yielding standard uncertainties of about ±2.5 that are exclusively limited by the available line strength figure quality. With this study we demonstrate the achieved comparability of CO quantifications, adhering metrological principles.
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47
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Mandon J, Högman M, Merkus PJFM, van Amsterdam J, Harren FJM, Cristescu SM. Exhaled nitric oxide monitoring by quantum cascade laser: comparison with chemiluminescent and electrochemical sensors. JOURNAL OF BIOMEDICAL OPTICS 2012; 17:017003. [PMID: 22352669 DOI: 10.1117/1.jbo.17.1.017003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Fractional exhaled nitric oxide (F(E)NO) is considered an indicator in the diagnostics and management of asthma. In this study we present a laser-based sensor for measuring F(E)NO. It consists of a quantum cascade laser (QCL) combined with a multi-pass cell and wavelength modulation spectroscopy for the detection of NO at the sub-part-per-billion by volume (ppbv, 110(-9)) level. The characteristics and diagnostic performance of the sensor were assessed. A detection limit of 0.5 ppbv was demonstrated with a relatively simple design. The QCL-based sensor was compared with two market sensors, a chemiluminescent analyzer (NOA 280, Sievers) and a portable hand-held electrochemical analyzer (MINO, Aerocrine AB, Sweden). F(E)NO from 20 children diagnosed with asthma and treated with inhaled corticosteroids were measured. Data were found to be clinically acceptable within 1.1 ppbv between the QCL-based sensor and chemiluminescent sensor and within 1.7 ppbv when compared to the electrochemical sensor. The QCL-based sensor was tested on healthy subjects at various expiratory flow rates for both online and offline sampling procedures. The extended NO parameters, i.e. the alveolar region, airway wall, diffusing capacity, and flux were calculated and showed a good agreement with the previously reported values.
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Affiliation(s)
- Julien Mandon
- Radboud University, Life Science Trace Gas Facility, Molecular and Laser Physics, Institute for Molecules and Materials, PO Box 9010, 6500 GL Nijmegen, The Netherlands
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48
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Arslanov DD, Swinkels K, Cristescu SM, Harren FJM. Real-time, subsecond, multicomponent breath analysis by Optical Parametric Oscillator based Off-Axis Integrated Cavity Output Spectroscopy. OPTICS EXPRESS 2011; 19:24078-24089. [PMID: 22109433 DOI: 10.1364/oe.19.024078] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Breath analysis is an attractive field of research, due to its high potential for non-invasive medical diagnostics. Among others, laser-based absorption spectroscopy is an excellent method for the detection of gases in exhaled breath, because it can combine a high sensitivity with a good selectivity, and a high temporal resolution. Here, we use a fast-scanning continuous wave, singly-resonant Optical Parametric Oscillator (wavelength range between 3 and 4 μm, linewidth 40 MHz, output power > 1 W, scanning speed 100 THz/s) with Off-Axis Integrated Cavity Output Spectroscopy for rapid and sensitive trace gas detection. Real-time, low- ppbv detection of ethane is demonstrated in exhaled human breath during free exhalations. Also, simultaneous, real-time multi-component gas detection of ethane, methane and water was performed in exhaled breath using a wide spectral coverage over 17 cm(-1) in 1 second. Furthermore, real-time detection of acetone, a molecule with a wide absorption spectrum, was shown in exhaled breath, with a sub-second time resolution (0.4 s).
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Affiliation(s)
- Denis D Arslanov
- Life Science Trace Gas Research Group, Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, P.O. Box 9010, NL-6500 GL Nijmegen, The Netherlands.
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[Letter to the editor] Ethylene emitted by nylon membrane filters questions their usefulness to transfer plant seedlings between media. Biotechniques 2011; 51:329-30, 333. [PMID: 22054545 DOI: 10.2144/000113762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 09/21/2011] [Indexed: 11/23/2022] Open
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Mur LAJ, Mandon J, Cristescu SM, Harren FJM, Prats E. Methods of nitric oxide detection in plants: a commentary. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2011; 181:509-19. [PMID: 21893246 DOI: 10.1016/j.plantsci.2011.04.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/05/2011] [Accepted: 04/06/2011] [Indexed: 05/20/2023]
Abstract
Over the last decade nitric oxide (NO) has been shown to influence a range of processes in plants. However, when, where and even if NO production occurs is controversial in several physiological scenarios in plants. This arises from a series of causes: (a) doubts have arisen over the specificity of widely used 4,5-diaminofluorescein diacetate (DAF-2DA)/4-amino-5-methylamino-2,7-difluorofluorescein (DAF-FM) dyes for NO, (b) no plant nitric oxide synthase (NOS) has been cloned, so that the validity of using mammalian NOS inhibitors to demonstrate that NO is being measured is debatable, (c) the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-l-oxyl-3-oxide (cPTIO) needs to be used with caution, and (d) some discrepancies between assays for in planta measurements and another based on sampling NO from the gas phase have been reported. This review will outline some commonly used methods to determine NO, attempt to reconcile differing results obtained by different laboratories and suggest appropriate approaches to unequivocally demonstrate the production of NO.
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Affiliation(s)
- Luis A J Mur
- University of Wales, Aberystwyth, Institute of Biological Sciences, Aberystwyth, Wales, UK.
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