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Espitia Buitrago PA, Manzano MR, Hernández LM. Spittlebugs (Hemiptera: Cercopidae): Integrated Pest Management on Gramineous Crops in the Neotropical Ecozone. Front Sustain Food Syst 2022. [DOI: 10.3389/fsufs.2022.891417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Spittlebug (Hemiptera: Cercopidae) species cause large economic losses on gramineous crops (Poaceae) in tropical and subtropical America. These insects are key pests of sugarcane and forages, crops that experienced a quick expansion in extensive monocultures in Brazil, Colombia, and Mexico. Mobilization toward sustainable crop and livestock systems to supply the growing demand of meat, milk, and sugar in Latin America and the Caribbean region implies developing sustainable and feasible strategies of integrated pest management to control spittlebugs. This review combines information on Cercopidae taxonomy, geographical distribution, insect biology, and control strategies to contribute to the development of integrated pest management in grasses and sugarcane in the Neotropics.
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Llopis G, Quinones S, Konschake M, Simon De Blas C, Hernández LM, Abramovic A, Viñuela-Prieto JM, Sanudo J, Tubbs RS, Maranillo E. ATHEROMATOSIS OF THE BRAIN-SUPPLYING ARTERIES: CIRCLE OF WILLIS, BASILAR, VERTEBRAL AND THEIR BRANCHES. Ann Anat 2022; 243:151941. [PMID: 35378255 DOI: 10.1016/j.aanat.2022.151941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 11/17/2022]
Abstract
PURPOSE Atherosclerotic plaques in the brain-supplying arteries are slowly-developing alterations of vascular structures that can lead to neurological impairment due to stenosis and insufficient oxygenation of eloquent brain areas. The aim of this study is to provide detailed demographic information related to the incidence of atherosclerotic plaques in the cerebral arteries. MATERIAL AND METHODS Forty-eight circles of Willis (21 men, 21 women, mean age: 70.26, six samples unknown) were macroscopically analyzed for length, diameter, and presence of atherosclerotic plaques. Statistical analysis was used to identify potential differences in the locations and frequencies of atherosclerotic plaques in relation to age and sex. RESULTS The study sample revealed 261 atherosclerotic plaques. The key findings were significant correlations between plaque development and age and between plaque location and age; however, there was no significant sex difference. CONCLUSION The upper and lower branches of the middle cerebral artery (MCA) were novel locations predisposing to plaque development. A cut-off value at 60 years revealed a significant difference in plaque development and distribution. There were no significant sex differences in the occurrence of atherosclerotic plaques.
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Affiliation(s)
- G Llopis
- Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - S Quinones
- Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - M Konschake
- Institute of Clinical and Functional Anatomy, Medical University of Innsbruck (MUI), Innsbruck, Austria.
| | - C Simon De Blas
- Department of Computer Science and Statistics, Universidad Rey Juan Carlos, Madrid, Spain
| | - L M Hernández
- Department of Human Anatomy and Embryology, School of Medicine, Alcalá University of Madrid, Madrid, Spain
| | - A Abramovic
- Institute of Clinical and Functional Anatomy, Medical University of Innsbruck (MUI), Innsbruck, Austria; Department of Neurosurgery, Medical University of Innsbruck (MUI), Innsbruck, Austria
| | | | - J Sanudo
- Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Spain
| | - R S Tubbs
- Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA, USA; Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA, USA; Department of Anatomical Sciences, St. George's University, Grenada; Department of Neurology, Tulane University School of Medicine, New Orleans, LA, USA; Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA; Department of Surgery, Tulane University School of Medicine, New Orleans, LA, USA
| | - E Maranillo
- Department of Anatomy and Embryology, School of Medicine, Complutense University of Madrid, Madrid, Spain
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Hernández LM, Espitia P, Florian D, Castiblanco V, Cardoso JA, Gómez-Jiménez MI. Geographic Distribution of Colombian Spittlebugs (Hemiptera: Cercopidae) via Ecological Niche Modeling: A Prediction for the Main Tropical Forages' Pest in the Neotropics. Front Sustain Food Syst 2021. [DOI: 10.3389/fsufs.2021.725774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Spittlebugs (Hemiptera: Cercopidae) are the main tropical pests in Central and South America of cultivated pastures. We aimed to estimate the potential distribution of Aeneolamia varia, A. lepidior, A. reducta, Prosapia simulans, Zulia carbonaria, and Z. pubescens throughout the Neotropics using ecological niche modeling. These six insect species are common in Colombia and cause large economic losses. Records of these species, prior to the year 2000, were compiled from human observations, specimens from CIAT Arthropod Reference Collection (CIATARC), Global Biodiversity Information Facility (GBIF), speciesLink (splink), and an extensive literature review. Different ecological niche models (ENMs) were generated for each species: Maximum Entropy (MaxEnt), generalized linear (GLM), multivariate adaptive regression spline (MARS), and random forest model (RF). Bioclimatic datasets were obtained from WorldClim and the 19 available variables were used as predictors. Future changes in the potential geographical distribution were simulated in ENMs generated based on climate change projections for 2050 in two scenarios: optimistic and pessimistic. The results suggest that (i) Colombian spittlebugs impose an important threat to Urochloa production in different South American countries, (ii) each spittlebug species has a unique geographic distribution pattern, (iii) in the future the six species are likely to invade new geographic areas even in an optimistic scenario, (iv) A. lepidior and A. reducta showed a higher number of suitable habitats across Colombia, Venezuela, Brazil, Peru, and Ecuador, where predicted risk is more severe. Our data will allow to (i) monitor the dispersion of these spittlebug species, (ii) design strategies for integrated spittlebug management that include resistant cultivars adoption to mitigate potential economic damage, and (iii) implement regulatory actions to prevent their introduction and spread in geographic areas where the species are not yet found.
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Durão J, Souto A, Hernández LM, Simões JD, Teixeira V. Evaluation of COVID-19 case investigators’ interviewing skills in a portuguese public health unit. Eur J Public Health 2021. [PMCID: PMC8574730 DOI: 10.1093/eurpub/ckab165.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
An effective control of the COVID-19 pandemic requires a thorough epidemiological interview of reported cases. The interviewer's skills and preparation directly affect the outcome of the investigation. This study applied a self-assessment survey of the COVID-19 patient interviewing skills on a local public health department workforce. The findings may be used to improve the quality of the interview process and the overall response to the pandemic at a community level. A 50-item questionnaire using a four-point Likert scale was adapted from the COVID-19 Patient Interview Skills Assessment Form created by the Centers for Disease Control and Prevention (CDC) and applied to 50 healthcare workers involved in epidemiological investigation of COVID-19 cases in Almada and Seixal, two municipalities of the Lisbon Metropolitan Area, from January to April of 2021. The most frequently executed steps concern checking patient data in advance (92%), questioning symptoms (97.2%), contact tracing (100%) and determining isolation periods for high risk contacts (100%). Least performed tasks include confirming the testing technique used (50%), asking about hospitalization (44.4%), assessing conditions for home isolation (44%), explaining how to self-monitor symptoms (61%) and checking if the patient understood the instructions (47%). In addition, 8% admitted to not always keeping patient information confidential. While caution is necessary as the data was limited to a single public health local department, our findings show that a majority of healthcare workers fulfill the essential steps of an epidemiological investigation. Areas in need of improvement include inquiring about infection severity, assessing social conditions for quarantine and confirming instructions for self-monitoring and follow-up. In line with CDC recommendations, we believe regular evaluation and feedback of case investigators' skills are crucial to quality assurance of a public health department.
Key messages
A detailed interview provides critical data for monitoring infected individuals and quickly trace, test and isolate those who might have been exposed, thus breaking chains of transmission. The results of this assessment can be used to introduce training measures such as shadowing and role-playing to ensure continued improvement in epidemiological investigations.
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Affiliation(s)
- J Durão
- Public Health Unit, ACES Almada-Seixal, Lisbon, Portugal
| | - A Souto
- Public Health Unit, ACES Almada-Seixal, Lisbon, Portugal
| | - LM Hernández
- Public Health Unit, ACES Almada-Seixal, Lisbon, Portugal
| | - JD Simões
- Public Health Unit, ACES Almada-Seixal, Lisbon, Portugal
| | - V Teixeira
- Public Health Unit, ACES Almada-Seixal, Lisbon, Portugal
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Tomaszewska P, Pellny TK, Hernández LM, Mitchell RAC, Castiblanco V, de Vega JJ, Schwarzacher T, Heslop-Harrison P(J. Flow Cytometry-Based Determination of Ploidy from Dried Leaf Specimens in Genomically Complex Collections of the Tropical Forage Grass Urochloa s. l. Genes (Basel) 2021; 12:957. [PMID: 34201593 PMCID: PMC8306847 DOI: 10.3390/genes12070957] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 01/31/2023] Open
Abstract
Urochloa (including Brachiaria, Megathyrus and some Panicum) tropical grasses are native to Africa and are now, after selection and breeding, planted worldwide, particularly in South America, as important forages with huge potential for further sustainable improvement and conservation of grasslands. We aimed to develop an optimized approach to determine ploidy of germplasm collection of this tropical forage grass group using dried leaf material, including approaches to collect, dry and preserve plant samples for flow cytometry analysis. Our methods enable robust identification of ploidy levels (coefficient of variation of G0/G1 peaks, CV, typically <5%). Ploidy of some 348 forage grass accessions (ploidy range from 2x to 9x), from international genetic resource collections, showing variation in basic chromosome numbers and reproduction modes (apomixis and sexual), were determined using our defined standard protocol. Two major Urochloa agamic complexes are used in the current breeding programs at CIAT and EMBRAPA: the 'brizantha' and 'humidicola' agamic complexes are variable, with multiple ploidy levels. Some U. brizantha accessions have odd level of ploidy (5x), and the relative differences in fluorescence values of the peak positions between adjacent cytotypes is reduced, thus more precise examination of this species is required. Ploidy measurement of U. humidicola revealed aneuploidy.
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Affiliation(s)
- Paulina Tomaszewska
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester LE1 7RH, UK; (T.S.); (P.H.-H.)
| | - Till K. Pellny
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK; (T.K.P.); (R.A.C.M.)
| | - Luis M. Hernández
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia; (L.M.H.); (V.C.)
| | | | - Valheria Castiblanco
- International Center for Tropical Agriculture (CIAT), Cali 6713, Colombia; (L.M.H.); (V.C.)
| | - José J. de Vega
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK;
| | - Trude Schwarzacher
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester LE1 7RH, UK; (T.S.); (P.H.-H.)
| | - Pat (J.S.) Heslop-Harrison
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester LE1 7RH, UK; (T.S.); (P.H.-H.)
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6
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Phillips HRP, Bach EM, Bartz MLC, Bennett JM, Beugnon R, Briones MJI, Brown GG, Ferlian O, Gongalsky KB, Guerra CA, König-Ries B, Krebs JJ, Orgiazzi A, Ramirez KS, Russell DJ, Schwarz B, Wall DH, Brose U, Decaëns T, Lavelle P, Loreau M, Mathieu J, Mulder C, van der Putten WH, Rillig MC, Thakur MP, de Vries FT, Wardle DA, Ammer C, Ammer S, Arai M, Ayuke FO, Baker GH, Baretta D, Barkusky D, Beauséjour R, Bedano JC, Birkhofer K, Blanchart E, Blossey B, Bolger T, Bradley RL, Brossard M, Burtis JC, Capowiez Y, Cavagnaro TR, Choi A, Clause J, Cluzeau D, Coors A, Crotty FV, Crumsey JM, Dávalos A, Cosín DJD, Dobson AM, Domínguez A, Duhour AE, van Eekeren N, Emmerling C, Falco LB, Fernández R, Fonte SJ, Fragoso C, Franco ALC, Fusilero A, Geraskina AP, Gholami S, González G, Gundale MJ, López MG, Hackenberger BK, Hackenberger DK, Hernández LM, Hirth JR, Hishi T, Holdsworth AR, Holmstrup M, Hopfensperger KN, Lwanga EH, Huhta V, Hurisso TT, Iannone BV, Iordache M, Irmler U, Ivask M, Jesús JB, Johnson-Maynard JL, Joschko M, Kaneko N, Kanianska R, Keith AM, Kernecker ML, Koné AW, Kooch Y, Kukkonen ST, Lalthanzara H, Lammel DR, Lebedev IM, Le Cadre E, Lincoln NK, López-Hernández D, Loss SR, Marichal R, Matula R, Minamiya Y, Moos JH, Moreno G, Morón-Ríos A, Motohiro H, Muys B, Neirynck J, Norgrove L, Novo M, Nuutinen V, Nuzzo V, Mujeeb Rahman P, Pansu J, Paudel S, Pérès G, Pérez-Camacho L, Ponge JF, Prietzel J, Rapoport IB, Rashid MI, Rebollo S, Rodríguez MÁ, Roth AM, Rousseau GX, Rozen A, Sayad E, van Schaik L, Scharenbroch B, Schirrmann M, Schmidt O, Schröder B, Seeber J, Shashkov MP, Singh J, Smith SM, Steinwandter M, Szlavecz K, Talavera JA, Trigo D, Tsukamoto J, Uribe-López S, de Valença AW, Virto I, Wackett AA, Warren MW, Webster ER, Wehr NH, Whalen JK, Wironen MB, Wolters V, Wu P, Zenkova IV, Zhang W, Cameron EK, Eisenhauer N. Global data on earthworm abundance, biomass, diversity and corresponding environmental properties. Sci Data 2021; 8:136. [PMID: 34021166 PMCID: PMC8140120 DOI: 10.1038/s41597-021-00912-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 04/01/2021] [Indexed: 12/30/2022] Open
Abstract
Earthworms are an important soil taxon as ecosystem engineers, providing a variety of crucial ecosystem functions and services. Little is known about their diversity and distribution at large spatial scales, despite the availability of considerable amounts of local-scale data. Earthworm diversity data, obtained from the primary literature or provided directly by authors, were collated with information on site locations, including coordinates, habitat cover, and soil properties. Datasets were required, at a minimum, to include abundance or biomass of earthworms at a site. Where possible, site-level species lists were included, as well as the abundance and biomass of individual species and ecological groups. This global dataset contains 10,840 sites, with 184 species, from 60 countries and all continents except Antarctica. The data were obtained from 182 published articles, published between 1973 and 2017, and 17 unpublished datasets. Amalgamating data into a single global database will assist researchers in investigating and answering a wide variety of pressing questions, for example, jointly assessing aboveground and belowground biodiversity distributions and drivers of biodiversity change.
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Affiliation(s)
- Helen R P Phillips
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany. .,Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany. .,Department of Environmental Science, Saint Mary's University, Halifax, Nova Scotia, Canada.
| | - Elizabeth M Bach
- Global Soil Biodiversity Initiative and School of Global Environmental Sustainability, Colorado State University, Fort Collins, CO, 80523, USA.,Department of Biology, Colorado State University, Fort Collins, CO, 80523, USA
| | - Marie L C Bartz
- Universidade Positivo, Rua Prof. Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, 81280-330, Brazil.,Center of Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martins de Freitas, 3000-456, Coimbra, Portugal
| | - Joanne M Bennett
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108, Halle (Saale), Germany.,Centre for Applied Water Science, Institute for Applied Ecology, Faculty of Science and Technology, University of Canberra, Canberra, Australia
| | - Rémy Beugnon
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany
| | - Maria J I Briones
- Departamento de Ecología y Biología Animal, Universidad de Vigo, 36310, Vigo, Spain
| | - George G Brown
- Embrapa Forestry, Estrada da Ribeira, km. 111, C.P. 231, Colombo, PR, 83411-000, Brazil
| | - Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany
| | - Konstantin B Gongalsky
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr., 33, Moscow, 119071, Russia.,M.V. Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
| | - Carlos A Guerra
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108, Halle (Saale), Germany
| | - Birgitta König-Ries
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Computer Science, Friedrich Schiller University Jena, Ernst-Abbe-Platz 2, 07743, Jena, Germany
| | - Julia J Krebs
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany
| | | | - Kelly S Ramirez
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700, Wageningen, AB, The Netherlands
| | - David J Russell
- Senckenberg Museum for Natural History Görlitz, Department of Soil Zoology, 02826, Görlitz, Germany
| | - Benjamin Schwarz
- Biometry and Environmental System Analysis, University of Freiburg, Tennenbacher Str. 4, 79106, Freiburg, Germany
| | - Diana H Wall
- Global Soil Biodiversity Initiative and School of Global Environmental Sustainability, Colorado State University, Fort Collins, CO, 80523, USA.,Department of Biology, Colorado State University, Fort Collins, CO, 80523, USA
| | - Ulrich Brose
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biodiversity, Friedrich Schiller University Jena, Dornburger-Str. 159, 07743, Jena, Germany
| | - Thibaud Decaëns
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France
| | - Patrick Lavelle
- Sorbonne Université, Institut d'Ecologie et des Sciences de l'Environnement, 75005, Paris, France
| | - Michel Loreau
- Centre for Biodiversity Theory and Modelling, Theoretical and Experimental Ecology Station, CNRS, 09200, Moulis, France
| | - Jérôme Mathieu
- Sorbonne Université, Institute of Ecology and Environmental Sciences of Paris (UMR 7618 IEES-Paris, CNRS, INRA, UPMC, IRD, UPEC), 4 place Jussieu, 75000, Paris, France.,INRA, IRD, Institut d'Ecologie et des Sciences de l'Environnement de Paris, F-75005, Paris, France
| | - Christian Mulder
- Department of Biological, Geological and Environmental Sciences, University of Catania, Via Androne 81, 95124, Catania, Italy
| | - Wim H van der Putten
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700, Wageningen, AB, The Netherlands.,Laboratory of Nematology, Wageningen University, PO Box 8123, 6700, Wageningen, ES, The Netherlands
| | - Matthias C Rillig
- Institute of Biology, Freie Universität Berlin, 14195, Berlin, Germany
| | - Madhav P Thakur
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700, Wageningen, AB, The Netherlands
| | - Franciska T de Vries
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - David A Wardle
- Asian School of the Environment, Nanyang Technological University, Singapore, 639798, Singapore
| | - Christian Ammer
- Centre of Biodiversity and Sustainable Landuse, University of Göttingen, Büsgenweg 1, Göttingen, Germany.,Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Büsgenweg 1, Göttingen, Germany
| | - Sabine Ammer
- Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 1, Göttingen, Germany
| | - Miwa Arai
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, 3-1-3 Kan-nondai, Tsukuba, Ibaraki, Japan
| | - Fredrick O Ayuke
- Land Resource Management and Agricultural Technology, University of Nairobi, Kapenguria Road, Off Naivasha Road, P.O Box 29053, Nairobi, Kenya.,Rwanda Institute for Conservation Agriculture, KG 541, Kigali, Rwanda
| | - Geoff H Baker
- Health & Biosecurity, CSIRO, PO Box 1700, Canberra, Australia
| | - Dilmar Baretta
- Department of Animal Science, Santa Catarina State University, Chapecó, SC, 89815-630, Brazil
| | - Dietmar Barkusky
- Experimental Infrastructure Platform (EIP), Leibniz Centre for Agricultural Landscape Research, Eberswalder Str. 84, Müncheberg, Germany
| | - Robin Beauséjour
- Départment de biologie, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Jose C Bedano
- Geology Department, FCEFQyN, ICBIA-CONICET (National Scientific and Technical Research Council), National University of Rio Cuarto, Ruta 36 Km, 601, Río Cuarto, Argentina
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology, Konrad-Wachsmann-Allee 6, Cottbus, Germany
| | - Eric Blanchart
- Eco&Sols, Univ Montpellier, IRD, INRAE, CIRAD, Institut Agro, Montpellier, France
| | - Bernd Blossey
- Natural Resources, Cornell University, Ithaca, NY, USA
| | - Thomas Bolger
- Earth Institute, University College Dublin, Belfield, Dublin, 4, Ireland.,School of Biology and Environmental Science, University College Dublin, Belfield, Dublin, Ireland
| | - Robert L Bradley
- Départment de biologie, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Michel Brossard
- Eco&Sols, Univ Montpellier, IRD, INRAE, CIRAD, Institut Agro, Montpellier, France
| | - James C Burtis
- Department of Entomology, Cornell University, 3132, Comstock Hall, Ithaca, NY, USA
| | - Yvan Capowiez
- EMMAH, UMR 1114, INRA, Site Agroparc, Avignon, France
| | - Timothy R Cavagnaro
- The School of Agriculture, Food and Wine, The Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, Australia
| | - Amy Choi
- Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, Canada
| | - Julia Clause
- Laboratoire Écologie et Biologie des Interactions, équipe EES, UMR CNRS 7267, Université de Poitiers, 5 rue Albert Turpain, Poitiers, France
| | - Daniel Cluzeau
- UMR ECOBIO (Ecosystems, Biodiversity, Evolution) CNRS-Université de Rennes, Station Biologique, 35380, Paimpont, France
| | - Anja Coors
- ECT Oekotoxikologie GmbH, Boettgerstr. 2-14, Floersheim, Germany
| | - Felicity V Crotty
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth Universtiy, Plas Gogerddan, Aberystwyth, SY24 3EE, United Kingdom.,School for Agriculture, Food and the Environment, Royal Agricultural University, Stroud Road, Cirencester, GL7 6JS, United Kingdom
| | - Jasmine M Crumsey
- Odum School of Ecology, University of Georgia, 140 E Green Street, Athens, USA
| | - Andrea Dávalos
- Department of Biological Sciencies, SUNY Cortland, 1215 Bowers Hall, Cortland, USA
| | - Darío J Díaz Cosín
- Biodiversity, Ecology and Evolution, Faculty of Biology, University Complutense of Madrid, José Antonio Novais, 12, Madrid, Spain
| | - Annise M Dobson
- Yale School of the Environment, Yale University, 370 Prospect St, New Haven, CT, USA
| | - Anahí Domínguez
- Geology Department, FCEFQyN, ICBIA-CONICET (National Scientific and Technical Research Council), National University of Rio Cuarto, Ruta 36 Km, 601, Río Cuarto, Argentina
| | - Andrés Esteban Duhour
- Departamento de Ciencias Básicas, Universidad Nacional de Luján, Argentina - INEDES (Universidad Nacional de Luján - CONICET), Luján, Argentina
| | | | - Christoph Emmerling
- Department of Soil Science, University of Trier, Campus II, Behringstraße 21, Trier, Germany
| | - Liliana B Falco
- Departamento de Ciencias Básicas, Instituto de Ecología y Desarrollo Sustentable, Universidad Nacional de Luján, Av. Constitución y Ruta 5, Luján, Argentina
| | - Rosa Fernández
- Animal Biodiversity and Evolution, Institute of Evolutionary Biology, Passeig Marítim de la Barceloneta 37, Barcelona, Spain
| | - Steven J Fonte
- Department of Soil and Crop Sciences, Colorado State University, 1170 Campus Delivery, Fort Collins, CO, USA
| | - Carlos Fragoso
- Biodiversity and Systematic Network, Institute of Ecology A.C., El Haya, Xalapa, Veracruz, 91070, Mexico
| | - André L C Franco
- Department of Biology, Colorado State University, 200 West Lake Street, Fort Collins, CO, USA
| | - Abegail Fusilero
- Department of Biological Sciences and Environmental Studies, University of the Philippines Mindanao, Tugbok District, Davao, Philippines.,Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit - GhEnToxLab, Ghent University, Campus Coupure, Coupure Links 653, Ghent, Belgium
| | - Anna P Geraskina
- Center for Forest Ecology and Productivity RAS, Profsoyuznaya st. 84/32 bldg. 14, Moscow, Russia
| | | | - Grizelle González
- United States Department of Agriculture, Forest Service, International Institute of Tropical Forestry, 1201 Ceiba Street, San Juan, Puerto Rico
| | - Michael J Gundale
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgrand 17, 901 83, Umeå, Sweden
| | - Mónica Gutiérrez López
- Biodiversity, Ecology and Evolution, Faculty of Biology, University Complutense of Madrid, José Antonio Novais, 12, Madrid, Spain
| | | | | | - Luis M Hernández
- Agriculture engineering, Agroecology Postgraduate Program, Maranhão State University, Avenida Lourenço Vieira da Silva 1000, São Luis, Brazil
| | - Jeff R Hirth
- Department of Jobs, Precincts and Regions, Agriculture Victoria, Chiltern Valley Road, Rutherglen, Australia
| | - Takuo Hishi
- Faculty of Agriculture, Kyushu University, 394 Tsubakuro, Sasaguri, Fukuoka, 811-2415, Japan
| | | | - Martin Holmstrup
- Department of Bioscience, Aarhus University, Vejlsøvej 25, Aarhus, Denmark
| | - Kristine N Hopfensperger
- Department of Biological Science, Northern Kentucky University, 1 Nunn Drive, Highland Heights, KY, USA
| | - Esperanza Huerta Lwanga
- Agricultura Sociedad y Ambiente, El Colegio de la Frontera Sur, Av. Polígono s/n Cd. Industrial Lerma, Campeche, Campeche, Mexico.,Soil Physics and Land Management Group, Wageningen University & Research, Droevendaalsteeg 4, Wageningen, The Netherlands
| | - Veikko Huhta
- Dept. of Biological and Environmental Sciences, University of Jyväskylä, Box 35, Jyväskylä, Finland
| | - Tunsisa T Hurisso
- Department of Soil and Crop Sciences, Colorado State University, 1170 Campus Delivery, Fort Collins, CO, USA.,College of Agriculture, Environmental and Human Sciences, Lincoln University of Missouri, Jefferson City, MO, 65101, USA
| | - Basil V Iannone
- School of Forest Resources and Conservation, University of Florida, Gainesville, USA
| | - Madalina Iordache
- Sustainable Development and Environmental Engineering, University of Agricultural Sciences and Veterinary Medicine of Banat "King Michael the 1st of Romania" from Timisoara, Calea Aradului 119, Timisoara, Romania
| | - Ulrich Irmler
- Institute for Ecosystem Research, University of Kiel, Olshausenstrasse 40, 24098, Kiel, Germany
| | - Mari Ivask
- Tartu College, Tallinn University of Technology, Puiestee 78, Tartu, Estonia
| | - Juan B Jesús
- Biodiversity, Ecology and Evolution, Faculty of Biology, University Complutense of Madrid, José Antonio Novais, 12, Madrid, Spain
| | - Jodi L Johnson-Maynard
- Department of Soil and Water Systems, University of Idaho, 875 Perimeter Drive MS, 2340, Moscow, USA
| | - Monika Joschko
- Experimental Infrastructure Platform (EIP), Leibniz Centre for Agricultural Landscape Research, Eberswalder Str. 84, Müncheberg, Germany
| | - Nobuhiro Kaneko
- Faculty of Food and Agricultural Sciences, Fukushima University, Kanayagawa 1, Fukushima, Japan
| | - Radoslava Kanianska
- Department of Environment, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, Banská Bystrica, Slovakia
| | - Aidan M Keith
- UK Centre for Ecology & Hydrology, Library Avenue, Bailrigg, Lancaster, United Kingdom
| | - Maria L Kernecker
- Land Use and Governance, Leibniz Centre for Agricultural Landscape Research, Eberswalder Str. 84, Müncheberg, Germany
| | - Armand W Koné
- UFR Sciences de la Nature, UR Gestion Durable des Sols, Université Nangui Abrogoua, Abidjan, Côte d'Ivoire
| | - Yahya Kooch
- Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, 46417-76489, Noor, Mazandaran, Iran
| | - Sanna T Kukkonen
- Production Systems, Natural Resources Institute Finland, Survontie 9 A, Jyväskylä, Finland
| | - H Lalthanzara
- Department of Zoology, Pachhunga University College, Aizawl, Mizoram, India
| | - Daniel R Lammel
- Institute of Biology, Freie Universität Berlin, 14195, Berlin, Germany
| | - Iurii M Lebedev
- A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky pr., 33, Moscow, 119071, Russia.,M.V. Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia.,Skolkovo Institute of Science and Technology, 30-1 Bolshoy Boulevard, Moscow, 121205, Russia
| | | | - Noa K Lincoln
- Tropical Plant and Soil Sciences, College of Tropical Agriculture and Human Resources, University of Hawai'i at Manoa, 3190 Maile Way, St. John 102, Honolulu, USA
| | - Danilo López-Hernández
- Ecologia Aplicada, Instituto de Zoologia y Ecologia Tropical, Universidad Central de Venezuela, Los Chaguaramos, Ciudad Universitaria, Caracas, Venezuela
| | - Scott R Loss
- Department of Natural Resource Ecology and Management, Oklahoma State University, 008C, Ag Hall, Stillwater, USA
| | - Raphael Marichal
- UPR Systèmes de Pérennes, CIRAD, Univ Montpellier, TA B-34/02 Avenue Agropolis, Montpellier, France
| | - Radim Matula
- Department of Forest Ecology, Faculty of Forestry and Wood Technology, Czech University of Life Sciences Prague, Kamýcká 129, Prague, Czech Republic
| | - Yukio Minamiya
- Tochigi Prefectural Museum, 2-2 Mutsumi-cho, Utsunomiya, Japan
| | - Jan Hendrik Moos
- Thuenen-Institute of Biodiversity, Bundesallee 65, Braunschweig, Germany.,Thuenen-Institute of Organic Farming, Trenthorst 32, Westerau, Germany
| | - Gerardo Moreno
- Plant Biology, Ecology and Earth Science, INDEHESA, University of Extremadura, Plasencia, Spain
| | - Alejandro Morón-Ríos
- Conservación de la Biodiversidad, El Colegio de la Frontera Sur, Av. Rancho, poligono 2 A, Cd. Industrial de Lerma, Campeche, Mexico
| | - Hasegawa Motohiro
- Department of Environmental Systems Science, Faculty of Science and Engineering, Doshisha University, Kyoto, 602-8580, Japan
| | - Bart Muys
- Department of Earth & Environmental Sciences, Division of Forest, Nature and Landscape, KU Leuven, Celestijnenlaan 200E Box, 2411, Leuven, Belgium
| | - Johan Neirynck
- Research Institute for Nature and Forest, Gaverstraat 35, 9500, Geraardsbergen, Belgium
| | - Lindsey Norgrove
- School of Agricultural, Forest and Food Sciences, Bern University of Applied Sciences, Länggasse 85, Zollikofen, Switzerland
| | - Marta Novo
- Biodiversity, Ecology and Evolution, Faculty of Biology, University Complutense of Madrid, José Antonio Novais, 12, Madrid, Spain
| | - Visa Nuutinen
- Soil Ecosystems, Natural Resources Institute Finland (Luke), Tietotie 4, Jokioinen, Finland
| | - Victoria Nuzzo
- Natural Area Consultants, 1 West Hill School Road, Richford, NY, USA
| | - P Mujeeb Rahman
- Department of Zoology, PSMO College, Tirurangadi, Malappuram, Kerala, India, Malappuram, India
| | - Johan Pansu
- CSIRO Ocean and Atmosphere, CSIRO, New Illawarra Road, Lucas Heights, NSW, Australia.,UMR7144 Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, CNRS/Sorbonne Université, Place Georges Teissier, Roscoff, France
| | - Shishir Paudel
- Department of Natural Resource Ecology and Management, Oklahoma State University, 008C, Ag Hall, Stillwater, USA.,Phipps Conservatory and Botanical Gardens, Pittsburgh, PA, 15213, USA
| | - Guénola Pérès
- UMR ECOBIO (Ecosystems, Biodiversity, Evolution) CNRS-Université de Rennes, Station Biologique, 35380, Paimpont, France.,UMR SAS, INRAE, Institut Agro Agrocampus Ouest, 35000, Rennes, France
| | - Lorenzo Pérez-Camacho
- Forest Ecology and Restoration Group, Department of Life Sciences, University of Alcalá, 28805, Alcalá De Henares, Spain
| | - Jean-François Ponge
- Adaptations du Vivant, CNRS UMR 7179, Muséum National d'Histoire Naturelle, 4 Avenue du Petit Château, Brunoy, France
| | - Jörg Prietzel
- Department of Ecology and Ecosystem Management, Technical University of Munich, Emil-Ramann-Str. 2, 85354, Freising, Germany
| | - Irina B Rapoport
- Tembotov Institute of Ecology of Mountain Territories, Russian Academy of Sciences, I. Armand, 37a, Nalchik, Russia
| | - Muhammad Imtiaz Rashid
- Center of Excellence in Environmental Studies, King Abdulaziz University, P.O Box 80216, Jeddah, 21589, Saudi Arabia
| | - Salvador Rebollo
- Forest Ecology and Restoration Group, Department of Life Sciences, University of Alcalá, 28805, Alcalá De Henares, Spain
| | - Miguel Á Rodríguez
- Global Change Ecology and Evolution Research Group (GloCEE), Department of Life Sciences, University of Alcalá, 28805, Alcalá De Henares, Spain
| | - Alexander M Roth
- Department of Forest Resources, University of Minnesota, 1530, Cleveland Ave. N, St. Paul, USA.,Friends of the Mississippi River, 101 E 5th St. Suite 2000, St Paul, USA
| | - Guillaume X Rousseau
- Agriculture engineering, Agroecology Postgraduate Program, Maranhão State University, Avenida Lourenço Vieira da Silva 1000, São Luis, Brazil.,Biology, Biodiversity and Conservation Postgraduate Program, Federal University of Maranhão, Avenida dos Portugueses 1966, São Luis, Brazil
| | - Anna Rozen
- Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, Kraków, Poland
| | | | - Loes van Schaik
- Soil Physics and Land Management Group, Wageningen University & Research, Droevendaalsteeg 4, Wageningen, The Netherlands
| | - Bryant Scharenbroch
- College of Natural Resources, University of Wisconsin, Stevens Point, WI, 54481, USA.,The Morton Arboretum, 4100 Illinois Route 53, Lisle, IL, 60532, USA
| | - Michael Schirrmann
- Department Engineering for Crop Production, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, Potsdam, Germany
| | - Olaf Schmidt
- School of Agriculture and Food Science, University College Dublin, Agriculture and Food Science Centre, Dublin, Ireland.,UCD Earth Institute, University College Dublin, Dublin, Ireland
| | - Boris Schröder
- Landscape Ecology and Environmental Systems Analysis, Institute of Geoecology, Technische Universität Braunschweig, Langer Kamp 19c, Braunschweig, Germany
| | - Julia Seeber
- Department of Ecology, University of Innsbruck, Technikerstrasse 25, Innsbruck, Austria.,Institute for Alpine Environment, Eurac Research, Viale Druso 1, Bozen/Bolzano, Italy
| | - Maxim P Shashkov
- Laboratory of Ecosystem Modelling, Institute of Physicochemical and Biological Problems in Soil Science of the Russian Academy of Sciences, Institutskaya str., 2, Pushchino, Russia.,Laboratory of Computational Ecology, Institute of Mathematical Problems of Biology RAS - the Branch of Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences, Vitkevicha str., 1, Pushchino, Russia
| | - Jaswinder Singh
- Department of Zoology, Khalsa College Amritsar, Amritsar, Punjab, India
| | - Sandy M Smith
- Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, Canada
| | - Michael Steinwandter
- Institute for Alpine Environment, Eurac Research, Viale Druso 1, Bozen/Bolzano, Italy
| | - Katalin Szlavecz
- Department of Earth and Planetary Sciences, Johns Hopkins University, 3400 N. Charles Street, Baltimore, USA
| | - José Antonio Talavera
- Department of animal biology, edaphology and geology, Faculty of Sciences (Biology), University of La Laguna, La Laguna, Santa Cruz De Tenerife, Spain
| | - Dolores Trigo
- Biodiversity, Ecology and Evolution, Faculty of Biology, University Complutense of Madrid, José Antonio Novais, 12, Madrid, Spain
| | - Jiro Tsukamoto
- Forest Science, Kochi University, Monobe Otsu 200, Nankoku, Japan
| | - Sheila Uribe-López
- Juárez Autonomous University of Tabasco, Nanotechnology Engineering, Multidisciplinary Academic Division of Jalpa de Méndez, Carr. Estatal libre Villahermosa-Comalcalco, Km 27 S/N, C.P. 86205 Jalpa de Méndez, Tabasco, Mexico
| | - Anne W de Valença
- Unit Food & Agriculture, WWF-Netherlands, Driebergseweg 10, Zeist, The Netherlands
| | - Iñigo Virto
- Dpto. Ciencias, IS-FOOD, Universidad Pública de Navarra, Edificio Olivos - Campus Arrosadia, Pamplona, Spain
| | - Adrian A Wackett
- Department of Soil, Water and Climate, University of Minnesota, 1991 Upper Buford Circle, St Paul, USA
| | - Matthew W Warren
- Earth Innovation Institute, 98 Battery Street Suite 250, San Francisco, USA
| | - Emily R Webster
- University of California Davis, 1 Shields Avenue, Davis, USA
| | - Nathaniel H Wehr
- Natural Resources & Environmental Management, University of Hawaii at Manoa, 1910 East West Rd, Honolulu, USA
| | - Joann K Whalen
- Natural Resource Sciences, McGill University, 21111 Lakeshore Road, Ste-Anne-de-Bellevue, Canada
| | | | - Volkmar Wolters
- Animal Ecology, Justus Liebig University, Heinrich-Buff-Ring 26, Giessen, Germany
| | - Pengfei Wu
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, China
| | - Irina V Zenkova
- Laboratory of terrestrial ecosystems, Federal Research Centre "Kola Science Centre of the Russian Academy of Sciences", Institute of North Industrial Ecology Problems (INEP KSC RAS), Akademgorodok, 14a, Apatity, Murmansk, Province, Russia
| | - Weixin Zhang
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, College of Environment and Planning, Henan University, Kaifeng, China
| | - Erin K Cameron
- Department of Environmental Science, Saint Mary's University, Halifax, Nova Scotia, Canada.,Faculty of Biological and Environmental Sciences, Post Office Box 65, FI 00014, University of Helsinki, Helsinki, Finland
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany.,Institute of Biology, Leipzig University, Puschstrasse 4, 04103, Leipzig, Germany
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7
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Silva Junior CHL, Alvarado ST, Celentano D, Rousseau GX, Hernández LM, Ferraz TM, Silva FB, de Melo MHF, Rodrigues TCS, Viegas JC, Souza UDV, Santos ALS, Bezerra D. Northeast Brazil's imperiled Cerrado. Science 2021; 372:139-140. [PMID: 33833116 DOI: 10.1126/science.abg0556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Celso H L Silva Junior
- Tropical Ecosystems and Environmental Sciences Laboratory, São José dos Campos, SP, Brazil. .,Instituto Nacional de Pesquisas Espaciais, São José dos Campos, SP, Brazil.,Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | | | - Danielle Celentano
- Universidade Estadual do Maranhão, São Luís, MA, Brazil.,Conservação Internacional, Brasília, DF, Brazil
| | | | | | | | | | | | | | - Josué C Viegas
- Universidade de Coimbra, Coimbra, Portugal.,Universidade Estadual do Maranhão, São Luís, MA, Brazil
| | - Ulisses D V Souza
- Colégio Universitário da Universidade Federal do Maranhão, São Luís, MA, Brazil.,Universidade de São Paulo, São Paulo, SP, Brazil
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8
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Phillips HRP, Guerra CA, Bartz MLC, Briones MJI, Brown G, Crowther TW, Ferlian O, Gongalsky KB, van den Hoogen J, Krebs J, Orgiazzi A, Routh D, Schwarz B, Bach EM, Bennett J, Brose U, Decaëns T, König-Ries B, Loreau M, Mathieu J, Mulder C, van der Putten WH, Ramirez KS, Rillig MC, Russell D, Rutgers M, Thakur MP, de Vries FT, Wall DH, Wardle DA, Arai M, Ayuke FO, Baker GH, Beauséjour R, Bedano JC, Birkhofer K, Blanchart E, Blossey B, Bolger T, Bradley RL, Callaham MA, Capowiez Y, Caulfield ME, Choi A, Crotty FV, Dávalos A, Cosin DJD, Dominguez A, Duhour AE, van Eekeren N, Emmerling C, Falco LB, Fernández R, Fonte SJ, Fragoso C, Franco ALC, Fugère M, Fusilero AT, Gholami S, Gundale MJ, López MG, Hackenberger DK, Hernández LM, Hishi T, Holdsworth AR, Holmstrup M, Hopfensperger KN, Lwanga EH, Huhta V, Hurisso TT, Iannone BV, Iordache M, Joschko M, Kaneko N, Kanianska R, Keith AM, Kelly CA, Kernecker ML, Klaminder J, Koné AW, Kooch Y, Kukkonen ST, Lalthanzara H, Lammel DR, Lebedev IM, Li Y, Lidon JBJ, Lincoln NK, Loss SR, Marichal R, Matula R, Moos JH, Moreno G, Morón-Ríos A, Muys B, Neirynck J, Norgrove L, Novo M, Nuutinen V, Nuzzo V, Rahman P M, Pansu J, Paudel S, Pérès G, Pérez-Camacho L, Piñeiro R, Ponge JF, Rashid MI, Rebollo S, Rodeiro-Iglesias J, Rodríguez MÁ, Roth AM, Rousseau GX, Rozen A, Sayad E, van Schaik L, Scharenbroch BC, Schirrmann M, Schmidt O, Schröder B, Seeber J, Shashkov MP, Singh J, Smith SM, Steinwandter M, Talavera JA, Trigo D, Tsukamoto J, de Valença AW, Vanek SJ, Virto I, Wackett AA, Warren MW, Wehr NH, Whalen JK, Wironen MB, Wolters V, Zenkova IV, Zhang W, Cameron EK, Eisenhauer N. Global distribution of earthworm diversity. Science 2019; 366:480-485. [PMID: 31649197 PMCID: PMC7335308 DOI: 10.1126/science.aax4851] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/10/2019] [Indexed: 12/23/2022]
Abstract
Soil organisms, including earthworms, are a key component of terrestrial ecosystems. However, little is known about their diversity, their distribution, and the threats affecting them. We compiled a global dataset of sampled earthworm communities from 6928 sites in 57 countries as a basis for predicting patterns in earthworm diversity, abundance, and biomass. We found that local species richness and abundance typically peaked at higher latitudes, displaying patterns opposite to those observed in aboveground organisms. However, high species dissimilarity across tropical locations may cause diversity across the entirety of the tropics to be higher than elsewhere. Climate variables were found to be more important in shaping earthworm communities than soil properties or habitat cover. These findings suggest that climate change may have serious implications for earthworm communities and for the functions they provide.
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Affiliation(s)
- Helen R P Phillips
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany.
- Institute of Biology, Leipzig University, 04103 Leipzig, Germany
| | - Carlos A Guerra
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
| | | | - Maria J I Briones
- Departamento de Ecología y Biología Animal, Universidad de Vigo, 36310 Vigo, Spain
| | | | - Thomas W Crowther
- Crowther Lab, Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, 8092 Zürich, Switzerland
| | - Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, 04103 Leipzig, Germany
| | - Konstantin B Gongalsky
- A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow 119071, Russia
- M. V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Johan van den Hoogen
- Crowther Lab, Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, 8092 Zürich, Switzerland
| | - Julia Krebs
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, 04103 Leipzig, Germany
| | | | - Devin Routh
- Crowther Lab, Department of Environmental Systems Science, Institute of Integrative Biology, ETH Zürich, 8092 Zürich, Switzerland
| | - Benjamin Schwarz
- Biometry and Environmental System Analysis, University of Freiburg, 79106 Freiburg, Germany
| | - Elizabeth M Bach
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
- Global Soil Biodiversity Initiative and School of Global Environmental Sustainability, Colorado State University, Fort Collins, CO 80523, USA
| | - Joanne Bennett
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Ulrich Brose
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biodiversity, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Thibaud Decaëns
- CEFE, UMR 5175, CNRS-Univ Montpellier-Univ Paul-Valéry-EPHE-SupAgro Montpellier-INRA-IRD, 34293 Montpellier Cedex 5, France
| | - Birgitta König-Ries
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Computer Science, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Michel Loreau
- Centre for Biodiversity Theory and Modeling, Theoretical and Experimental Ecology Station, CNRS, 09200 Moulis, France
| | - Jérôme Mathieu
- Sorbonne Université, CNRS, UPEC, Paris 7, INRA, IRD, Institut d'Ecologie et des Sciences de l'Environnement de Paris, F-75005 Paris, France
| | - Christian Mulder
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy
| | - Wim H van der Putten
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, Netherlands
- Laboratory of Nematology, Department of Plant Sciences, Wageningen University and Research, 6708 PB Wageningen, Netherlands
| | - Kelly S Ramirez
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, Netherlands
| | - Matthias C Rillig
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195 Berlin, Germany
- Institute of Biology, Freie Universität Berlin, 14195 Berlin, Germany
| | - David Russell
- Department of Soil Zoology, Senckenberg Museum for Natural History Görlitz, 02826 Görlitz, Germany
| | - Michiel Rutgers
- National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | - Madhav P Thakur
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6700 AB Wageningen, Netherlands
| | - Franciska T de Vries
- Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, 1012 WX Amsterdam, Netherlands
| | - Diana H Wall
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
- Global Soil Biodiversity Initiative and School of Global Environmental Sustainability, Colorado State University, Fort Collins, CO 80523, USA
| | - David A Wardle
- Asian School of the Environment, Nanyang Technological University, 639798 Singapore
| | - Miwa Arai
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization, Tsukuba 305-8604, Japan
| | - Fredrick O Ayuke
- Department of Land Resource Management and Agricultural Technology (LARMAT), College of Agriculture and Veterinary Sciences, University of Nairobi, Nairobi 00625, Kenya
| | - Geoff H Baker
- CSIRO Health and Biosecurity, Canberra, ACT 2601, Australia
| | - Robin Beauséjour
- Département de Biologie, Université de Sherbrooke, Sherbrooke J1K 2R1, Canada
| | - José C Bedano
- Geology Department, FCEFQyN, ICBIA-CONICET (National Scientific and Technical Research Council), National University of Río Cuarto, X5804 BYA Río Cuarto, Argentina
| | - Klaus Birkhofer
- Department of Ecology, Brandenburg University of Technology, 03046 Cottbus, Germany
| | - Eric Blanchart
- Eco&Sols, University of Montpellier, IRD, CIRAD, INRA, Montpellier SupAgro, 34060 Montpellier, France
| | - Bernd Blossey
- Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA
| | - Thomas Bolger
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
- UCD Earth Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Robert L Bradley
- Département de Biologie, Université de Sherbrooke, Sherbrooke J1K 2R1, Canada
| | - Mac A Callaham
- USDA Forest Service, Southern Research Station, Athens, GA 30602, USA
| | - Yvan Capowiez
- UMR 1114 "EMMAH," INRA, Site Agroparc, 84914 Avignon, France
| | - Mark E Caulfield
- Farming Systems Ecology, Wageningen University and Research, 6700 AK Wageningen, Netherlands
| | - Amy Choi
- Faculty of Forestry, University of Toronto, Toronto, ON M5S 3B3, Canada
| | - Felicity V Crotty
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3EE, UK
- School of Agriculture, Food and Environment, Royal Agricultural University, Cirencester GL7 6JS, UK
| | - Andrea Dávalos
- Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA
- Department of Biological Sciences, SUNY Cortland, Cortland, NY 13045, USA
| | - Darío J Diaz Cosin
- Biodiversity, Ecology and Evolution, Faculty of Biology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Anahí Dominguez
- Geology Department, FCEFQyN, ICBIA-CONICET (National Scientific and Technical Research Council), National University of Río Cuarto, X5804 BYA Río Cuarto, Argentina
| | - Andrés Esteban Duhour
- Laboratorio de Ecología, Instituto de Ecología y Desarrollo Sustentable, Universidad Nacional de Luján, 6700 Luján, Argentina
| | | | - Christoph Emmerling
- Department of Soil Science, Faculty of Regional and Environmental Sciences, University of Trier, Campus II, 54286 Trier, Germany
| | - Liliana B Falco
- Ciencias Básicas, Instituto de Ecología y Desarrollo Sustentable-INEDES, Universidad Nacional de Luján, 6700 Luján, Argentina
| | - Rosa Fernández
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), 08003 Barcelona, Spain
| | - Steven J Fonte
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Carlos Fragoso
- Biodiversity and Systematic Network, Instituto de Ecología A.C., Xalapa 91070, Mexico
| | - André L C Franco
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
| | - Martine Fugère
- Département de Biologie, Université de Sherbrooke, Sherbrooke J1K 2R1, Canada
| | - Abegail T Fusilero
- Department of Biological Science and Environmental Studies, University of the Philippines-Mindanao, Barangay Mintal, 8000 Davao City, Philippines
- Laboratory of Environmental Toxicology and Aquatic Ecology, Environmental Toxicology Unit (GhEnToxLab), Ghent University (UGent), Campus Coupure, Ghent, Belgium
| | | | - Michael J Gundale
- Forest Ecology and Management, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
| | - Mónica Gutiérrez López
- Biodiversity, Ecology and Evolution, Faculty of Biology, Complutense University of Madrid, 28040 Madrid, Spain
| | | | - Luis M Hernández
- Agricultural Engineering, Postgraduate Program in Agroecology, Maranhão State University, 65055-310 São Luís, Brazil
| | - Takuo Hishi
- Faculty of Agriculture, Kyushu University, 949 Ohkawauchi, Shiiba 883-0402, Japan
| | | | - Martin Holmstrup
- Department of Bioscience, Aarhus University, 8600 Silkeborg, Denmark
| | | | - Esperanza Huerta Lwanga
- Agricultura Sociedad y Ambiente, Colegio de la Frontera Sur, Ciudad Industrial, Lerma, Campeche 24500, Mexico
- Soil Physics and Land Management Degradation, Wageningen University and Research, 6708 PB Wageningen, Netherlands
| | - Veikko Huhta
- Department of Biological and Environmental Science, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Tunsisa T Hurisso
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
- College of Agriculture, Environmental and Human Sciences, Lincoln University of Missouri, Jefferson City, MO 65101, USA
| | - Basil V Iannone
- School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611, USA
| | - Madalina Iordache
- Sustainable Development and Environment Engineering, Banat's University of Agricultural Sciences and Veterinary Medicine "King Michael the 1st of Romania," 300645 Timisoara, Romania
| | - Monika Joschko
- Experimental Infrastructure Platform, Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
| | - Nobuhiro Kaneko
- Faculty of Food and Agricultural Sciences, Fukushima University, Kanayagawa 1, Fukushima City, Japan
| | - Radoslava Kanianska
- Department of Environmental Management, Faculty of Natural Sciences, Matej Bel University, Banská Bystrica, Slovakia
| | - Aidan M Keith
- Centre for Ecology and Hydrology, Bailrigg, Lancaster LA1 4AP, UK
| | - Courtland A Kelly
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Maria L Kernecker
- Land Use and Governance, Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany
| | - Jonatan Klaminder
- Department of Ecology and Environmental Science, Climate Impacts Research Centre, Umeå University, 90187 Umeå, Sweden
| | - Armand W Koné
- UR Gestion Durable des Sols, UFR Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d'Ivoire
| | - Yahya Kooch
- Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, 46417-76489, Noor, Mazandaran, Iran
| | - Sanna T Kukkonen
- Production Systems, Horticulture Technologies, Natural Resources Institute Finland, 40500 Jyväskylä, Finland
| | - H Lalthanzara
- Department of Zoology, Pachhunga University College, Aizawl 796001, India
| | - Daniel R Lammel
- Institute of Biology, Freie Universität Berlin, 14195 Berlin, Germany
- Soil Science, ESALQ-USP, Universidade de São Paulo, Piracicaba 13418, Brazil
| | - Iurii M Lebedev
- A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow 119071, Russia
- M. V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Yiqing Li
- College of Agriculture, Forestry and Natural Resource Management, University of Hawai'i, Hilo, HI 96720, USA
| | - Juan B Jesus Lidon
- Biodiversity, Ecology and Evolution, Faculty of Biology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Noa K Lincoln
- Tropical Plant and Soil Sciences, College of Tropical Agriculture and Human Resources, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Scott R Loss
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078, USA
| | - Raphael Marichal
- UR Systèmes de pérennes, CIRAD, Univ Montpellier, 34398 Montpellier, France
| | - Radim Matula
- Department of Forest Ecology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, 165 21 Prague, Czech Republic
| | - Jan Hendrik Moos
- Department of Soil and Environment, Forest Research Institute of Baden-Wuerttemberg, 79100 Freiburg, Germany
- Thuenen-Institute of Organic Farming, 23847 Westerau, Germany
| | - Gerardo Moreno
- Forestry School-INDEHESA, University of Extremadura, 10600 Plasencia, Spain
| | - Alejandro Morón-Ríos
- Conservación de la Biodiversidad, El Colegio de la Frontera Sur, 24500 Campeche, Mexico
| | - Bart Muys
- Department of Earth and Environmental Sciences, KU Leuven, 3001 Leuven, Belgium
| | - Johan Neirynck
- Research Institute for Nature and Forest, 9500 Geraardsbergen, Belgium
| | - Lindsey Norgrove
- School of Agricultural, Forest and Food Sciences, Bern University of Applied Sciences, 3052 Zollikofen, Switzerland
| | - Marta Novo
- Biodiversity, Ecology and Evolution, Faculty of Biology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Visa Nuutinen
- Soil Ecosystems, Natural Resources Institute Finland (Luke), 31600 Jokioinen, Finland
| | - Victoria Nuzzo
- Natural Area Consultants, 1 West Hill School Road, Richford, NY 13835, USA
| | - Mujeeb Rahman P
- Department of Zoology, Pocker Sahib Memorial Orphanage College, Tirurangadi, Malappuram, Kerala, India
| | - Johan Pansu
- CSIRO Ocean and Atmosphere, Lucas Heights, NSW 2234, Australia
- UMR7144 Adaptation et Diversité en Milieu Marin, Station Biologique de Roscoff, CNRS-Sorbonne Université, 29688 Roscoff, France
| | - Shishir Paudel
- Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078, USA
| | - Guénola Pérès
- UMR SAS, INRA, Agrocampus Ouest, 35000 Rennes, France
| | - Lorenzo Pérez-Camacho
- Ecology and Forest Restoration Group, Department of Life Sciences, University of Alcalá, 28801 Alcalá De Henares, Spain
| | - Raúl Piñeiro
- Computing, ESEI, Vigo, Edf. Politécnico-Campus As Lagoas, 32004 Ourense, Spain
| | - Jean-François Ponge
- Adaptations du Vivant, CNRS UMR 7179, Muséum National d'Histoire Naturelle, 91800 Brunoy, France
| | - Muhammad Imtiaz Rashid
- Centre of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Environmental Sciences, COMSATS University Islamabad, Sub-campus Vehari, Vehari 61100, Pakistan
| | - Salvador Rebollo
- Ecology and Forest Restoration Group, Department of Life Sciences, University of Alcalá, 28801 Alcalá De Henares, Spain
| | - Javier Rodeiro-Iglesias
- Departamento de Informática, Escuela Superior de Ingeniería Informática, Universidad de Vigo, 36310 Vigo, Spain
| | - Miguel Á Rodríguez
- Group of Global Change Ecology and Evolution (GloCEE), Department of Life Sciences, University of Alcalá, 28805 Alcalá de Henares, Spain
| | - Alexander M Roth
- Department of Forest Resources, University of Minnesota, St. Paul, MN 55101, USA
- Friends of the Mississippi River, 101 East Fifth Street, St. Paul, MN 55108, USA
| | - Guillaume X Rousseau
- Agricultural Engineering, Postgraduate Program in Agroecology, Maranhão State University, 65055-310 São Luís, Brazil
- Postgraduate Program in Biodiversity and Conservation, Federal University of Maranhão, 65080-805 São Luís, Brazil
| | - Anna Rozen
- Institute of Environmental Sciences, Jagiellonian University, 30-087 Kraków, Poland
| | | | - Loes van Schaik
- Institute of Ecology, Technical University of Berlin, 10587 Berlin, Germany
| | | | - Michael Schirrmann
- Engineering for Crop Production, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), 14469 Potsdam, Germany
| | - Olaf Schmidt
- UCD Earth Institute, University College Dublin, Belfield, Dublin 4, Ireland
- UCD School of Agriculture and Food Science, University College Dublin, Belfield, Ireland
| | - Boris Schröder
- Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), 14195 Berlin, Germany
- Landscape Ecology and Environmental Systems Analysis, Institute of Geoecology, Technische Universität Braunschweig, 38106 Braunschweig, Germany
| | - Julia Seeber
- Department of Ecology, University of Innsbruck, 6020 Innsbruck, Austria
- Institute for Alpine Environment, Eurac Research, 39100 Bozen/Bolzano, Italy
| | - Maxim P Shashkov
- Laboratory of Ecosystem Modeling, Institute of Physicochemical and Biological Problems in Soil Sciences, Russian Academy of Science, Pushchino 142290, Russia
- Laboratory of Computational Ecology, Institute of Mathematical Problems of Biology-Branch of Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Pushchino 142290, Russia
| | - Jaswinder Singh
- Post Graduate Department of Zoology, Khalsa College Amritsar, Amritsar 143002, India
| | - Sandy M Smith
- John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, Toronto, ON M5S 3B3, Canada
| | | | - José A Talavera
- Department of Animal Biology, University of La Laguna, 38200 La Laguna, Spain
| | - Dolores Trigo
- Biodiversity, Ecology and Evolution, Faculty of Biology, Complutense University of Madrid, 28040 Madrid, Spain
| | - Jiro Tsukamoto
- Faculty of Agriculture, Kochi University, Monobe Otsu 200, Nankoku 783-8502, Japan
| | | | - Steven J Vanek
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Iñigo Virto
- Dpto. Ciencias, IS-FOOD, Universidad Pública de Navarra, Edificio Olivos-Campus Arrosadia, 31006 Pamplona, Spain
| | - Adrian A Wackett
- Soil, Water and Climate, University of Minnesota, St. Paul, MN 55108, USA
| | - Matthew W Warren
- Earth Innovation Institute, 98 Battery Street, San Francisco, CA 94111, USA
| | - Nathaniel H Wehr
- Department of Natural Resources and Environmental Management, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Joann K Whalen
- Natural Resource Sciences, McGill University, Ste-Anne-de-Bellevue H9X 3V9, Canada
| | | | - Volkmar Wolters
- Department of Animal Ecology, Justus Liebig University, 35392 Giessen, Germany
| | - Irina V Zenkova
- Laboratory of Terrestrial Ecosystems, Kola Science Centre, Institute of the North Industrial Ecology Problems, Apatity 184211, Russia
| | - Weixin Zhang
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, College of Environment and Planning, Henan University, Kaifeng 475004, China
| | - Erin K Cameron
- Department of Environmental Science, Saint Mary's University, Halifax, Nova Scotia, Canada
- Faculty of Biological and Environmental Sciences, University of Helsinki, FI 00014 Helsinki, Finland
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, 04103 Leipzig, Germany
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9
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Duque-Gamboa DN, Castillo-Cárdenas MF, Hernández LM, Guzmán YC, Manzano MR, Toro-Perea N. Mitochondrial DNA suggests cryptic speciation in Prodiplosis longifila Gagné (Diptera: Cecidomyiidae) associated with geographic distance and host specialization. Bull Entomol Res 2018; 108:739-749. [PMID: 29345218 DOI: 10.1017/s0007485317001298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Prodiplosis longifila is reported as a pest of a wide range of species cultivated in America, including citrus, solanaceous species and asparagus. This species has different behavioural traits that are primarily centred on the oviposition habit and the feeding of larvae, which can change depending on the host. However, scarce information is available on population studies and the natural history of this insect, and uncertainty exists about the taxonomic identity and the geographic distribution of this species. The main objective was to perform a phylogenetic and genetic study of P. longifila populations and to define whether the North American and South American populations belong to the same species or whether a differentiation process had occurred due to geographic distance. A second objective was to determine whether this species showed genetic differentiation by host specialization in South America. The phylogenetic and population analyses based on DNA barcodes (cytochrome oxidase I gene) and a region of the ribosomal DNA (ITS2) revealed divergent clades attributable to geographic distance and host specificity. The North American and South American P. longifila insects were confirmed to be genetically distinct, and the genetic distances exceeded the values expected for intraspecific variation. In South America, the population analysis of P. longifila from tomato, sweet pepper (Solanaceae), Tahiti lime and key lime (Rutaceae) hosts evidenced high genetic differentiation between populations associated with different hosts and an absence of gene flow between these groups, suggesting the corresponding formation of cryptic species.
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Affiliation(s)
| | | | - L M Hernández
- Departamento de Ciencias Agrícolas,Universidad Nacional de Colombia Sede Palmira,Palmira,Colombia
| | - Y C Guzmán
- Departamento de Ciencias Agrícolas,Universidad Nacional de Colombia Sede Palmira,Palmira,Colombia
| | - M R Manzano
- Departamento de Ciencias Agrícolas,Universidad Nacional de Colombia Sede Palmira,Palmira,Colombia
| | - N Toro-Perea
- Departamento de Biología,Universidad del Valle,Cali,Colombia
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10
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Ramírez M, Velázquez R, Maqueda M, Zamora E, López-Piñeiro A, Hernández LM. Influence of the dominance of must fermentation by Torulaspora delbrueckii on the malolactic fermentation and organoleptic quality of red table wine. Int J Food Microbiol 2016; 238:311-319. [PMID: 27718475 DOI: 10.1016/j.ijfoodmicro.2016.09.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/27/2016] [Accepted: 09/28/2016] [Indexed: 11/18/2022]
Abstract
Torulaspora delbrueckii can improve wine aroma complexity, but its impact on wine quality is still far from being satisfactory at the winery level, mainly because it is easily replaced by S. cerevisiae yeasts during must fermentation. New T. delbrueckii killer strains were selected to overcome this problem. These strains killed S. cerevisiae yeasts and dominated fermentation better than T. delbrueckii non-killer strains when they were single-inoculated into crushed red grape must. All the T. delbrueckii wines, but none of the S. cerevisiae wines, underwent malolactic fermentation. Putative lactic acid bacteria were always found in the T. delbrueckii wines, but none or very few in the S. cerevisiae wines. Malic acid degradation was the greatest in the wines inoculated with the killer strains, and these strains reached the greatest dominance ratios and had the slowest fermentation kinetics. The T. delbrueckii wines had dried-fruit/pastry aromas, but low intensities of fresh-fruit aromas. The aroma differences between the T. delbrueckii and the S. cerevisiae wines can be explained by the differences that were found in the amounts of some fruity aroma compounds such as isoamyl acetate, ethyl hexanoate, ethyl octanoate, and some lactones. This T. delbrueckii effect significantly raised the organoleptic quality scores of full-bodied Cabernet-Sauvignon red wines inoculated with the killer strains. In particular, these wines were judged as having excellent aroma complexity, mouth-feel, and sweetness.
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Affiliation(s)
- Manuel Ramírez
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain.
| | - Rocío Velázquez
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain
| | - Matilde Maqueda
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain
| | - Emiliano Zamora
- Estación Enológica, Junta de Extremadura, 06200 Almendralejo, Spain
| | - Antonio López-Piñeiro
- Departamento de Biología Vegetal, Ecología y Ciencias de la Tierra, Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain
| | - Luis M Hernández
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura, 06071 Badajoz, Spain
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11
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Velázquez R, Zamora E, Álvarez ML, Hernández LM, Ramírez M. Effects of new Torulaspora delbrueckii killer yeasts on the must fermentation kinetics and aroma compounds of white table wine. Front Microbiol 2015; 6:1222. [PMID: 26579114 PMCID: PMC4630308 DOI: 10.3389/fmicb.2015.01222] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/19/2015] [Indexed: 11/25/2022] Open
Abstract
Torulaspora delbrueckii is becoming widely recommended for improving some specific characteristics of wines. However, its impact on wine quality is still far from satisfactory at the winery level, mostly because it is easily replaced by Saccharomyces cerevisiae-like yeasts during must fermentation. New T. delbrueckii killer strains were here isolated and selected for winemaking. They killed S. cerevisiae yeasts and were able to dominate and complete the fermentation of sterile grape must. Sequential yeast inoculation of non-sterile white must with T. delbrueckii followed by S. cerevisiae did not ensure T. delbrueckii dominance or wine quality improvement. Only a single initial must inoculation at high cell concentrations allowed the T. delbrueckii killer strains to dominate and complete the must fermentation to reach above 11% ethanol, but not the non-killer strains. None of the wines underwent malolactic fermentation as long as the must had low turbidity and pH. Although no statistically significant differences were found in the wine quality score, the S. cerevisiae-dominated wines were preferred over the T. delbrueckii-dominated ones because the former had high-intensity fresh fruit aromas while the latter had lower intensity, but nevertheless nice and unusual dried fruit/pastry aromas. Except for ethyl propanoate and 3-ethoxy-1-propanol, which were more abundant in the T. delbrueckii–dominated wines, most of the compounds with fresh fruit odor descriptors, including those with the greatest odor activity values (isoamyl acetate, ethyl hexanoate, and ethyl octanoate), were more abundant in the S. cerevisiae–dominated wines. The low relative concentrations of these fruity compounds made it possible to detect in the T. delbrueckii–dominated wines the low-relative-concentration compounds with dried fruit and pastry odors. An example was γ-ethoxy-butyrolactone which was significantly more abundant in these wines than in those dominated by S. cerevisiae.
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Affiliation(s)
- Rocío Velázquez
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura Badajoz, Spain
| | - Emiliano Zamora
- Estación Enológica, Junta de Extremadura Almendralejo, Spain
| | - María L Álvarez
- Estación Enológica, Junta de Extremadura Almendralejo, Spain
| | - Luis M Hernández
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura Badajoz, Spain
| | - Manuel Ramírez
- Departamento de Ciencias Biomédicas (Área de Microbiología), Facultad de Ciencias, Universidad de Extremadura Badajoz, Spain
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12
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Corbacho I, Teixidó F, Olivero I, Hernández LM. Dependence of Saccharomyces cerevisiae Golgi functions on V-ATPase activity. FEMS Yeast Res 2012; 12:341-50. [PMID: 22212511 DOI: 10.1111/j.1567-1364.2011.00784.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 11/22/2011] [Accepted: 12/14/2011] [Indexed: 11/30/2022] Open
Abstract
The V-ATPase of Saccharomyces cerevisiae is an ATP-dependent proton pump responsible for acidification of the vacuole and other internal compartments including the whole secretory pathway. We have studied the behavior of several glycoprotein processing reactions occurring in different Golgi compartments of representative vmaΔ mutants. We found that outer chain initiation is not altered in the mutants while mannosylphosphate transfer, α(1,3)-linked mannoses addition, and α factor maturation seem to be affected. The results suggest a gradation in the dependence of Golgi functions on V-ATPase activity, from early Golgi (unaffected) to late Golgi (significantly reduced). These findings are in agreement with the internal pH of Golgi cisternae measured in mammalian cells, which is more acidic in the late region. The mutant defects can be partially restored by buffering the external medium to pH 6.0, which supports the existence of a mechanism that, in the absence of a functional V-ATPase, could contribute to pH regulation at least in the late Golgi.
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Affiliation(s)
- Isaac Corbacho
- Department of Biomedical Sciences/Microbiology, University of Extremadura, Badajoz, Spain
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Abstract
The MNN3 gene of Saccharomyces cerevisiae has been identified as a synonym of VPS74. We have compared phenotype characteristics of the original mnn3 mutant, including low dye binding phenotype, size of external invertase, clump formation, and sodium orthovanadate resistance and found these to be identical to those shown by vps74Δ. Mating of both haploid strains resulted in non-complementation of mutant phenotypes. Finally, a vector containing wild-type VPS74 complemented the defects of both vps74Δ and mnn3. This work completes the identification of the entire collection of genes that are defective in mnn mutants. In addition, we have identified the mnn3 mutation by sequencing the VPS74 gene from the original mnn3 strain. We found a single amino acid change of Arg97 to Cys. This unique alteration seems to be sufficient to account for the phenotype of mnn3.
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Affiliation(s)
- Isaac Corbacho
- Department of Biomedical Sciences, Microbiology, University of Extremadura, 06006 Badajoz, Spain
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14
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Corbacho I, Olivero I, Hohmann S, Sunnerhagen P, Hernández LM. Genome-wide expression profile of the mnn2 Delta mutant of Saccharomyces cerevisiae. Antonie Van Leeuwenhoek 2006; 89:485-94. [PMID: 16622789 DOI: 10.1007/s10482-005-9047-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/21/2005] [Indexed: 10/24/2022]
Abstract
The MNN2 gene of S. cerevisiae encodes an alpha (1,2) mannosyl transferase required for branching the outer chain of N-linked oligosaccharides (Rayner J.C. and Munro S. 1998. J. Biol. Chem. 273: 26836-26843) and it also seems to have some effect on the transfer of mannosyl phosphate groups to the inner core (Olivero I. et al. 2000. FEBS Lett. 475: 111-116). In order to reveal possible interactions of MNN2 expression with other cellular pathways, we analyzed the transcriptome of the deletion mutant S. cerevisiae mnn2 Delta using cDNA microarrays. We found 151 genes that showed an altered expression level of > or =2-fold, 58 of them up-regulated and 93 down-regulated. Quite a high proportion of these genes (29%) encode unclassified proteins. In contrast to other defects affecting the integrity of the cell wall, deletion of MNN2 does not stimulate the expression of any of the genes included in the previously defined 'cell wall compensatory cluster' (Lagorce et al. 2003. J. Biol. Chem. 278: 20345-20357). We also found that 15% of the selected genes are related to central metabolic pathways. In addition, the mnn2 Delta strain seems to have a certain level of stimulation of DNA processing reactions while some genes involved in intracellular transport pathways are under-regulated.
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Affiliation(s)
- Isaac Corbacho
- Department of Microbiology, University of Extremadura, 06071, Badajoz, Spain
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15
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Corbacho I, Olivero I, Hernández LM. A genome-wide screen for Saccharomyces cerevisiae nonessential genes involved in mannosyl phosphate transfer to mannoprotein-linked oligosaccharides. Fungal Genet Biol 2005; 42:773-90. [PMID: 15993632 DOI: 10.1016/j.fgb.2005.05.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2005] [Revised: 05/10/2005] [Accepted: 05/10/2005] [Indexed: 11/21/2022]
Abstract
A collection of haploid Saccharomyces cerevisiae deletion strains--both MAT a and alpha--was screened for mutants that exhibit low dye binding (ldb) phenotype. This phenotype has previously been associated with reduced incorporation of mannosyl phosphate groups into the mannoprotein-linked oligosaccharides. We identified 199 nonessential genes whose deletion resulted in a detectable ldb phenotype. They fell into diverse functional categories, including those involved in protein glycosylation, vacuolar function, intracellular transport, cytoskeleton organization, transcription, signal transduction, among others. The study extends the number of known genes that affect mannosyl phosphorylation of mannoprotein-linked oligosaccharides, and establishes a link with other relevant pathways in the cell, especially vacuolar function. We have assigned an LDB name to four uncharacterized ORFs identified in this study: YCL005W, LDB16; YDL146W, LDB17; YLL049W, LDB18; and YOR322C, LDB19.
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Affiliation(s)
- Isaac Corbacho
- Department of Microbiology, University of Extremadura, Avda Elvas s/n, 06071 Badajoz, Spain
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16
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Shelley AJ, Hernández LM, Davies JB. Blackflies (Diptera: Simuliidae) of Southern Guyana with keys for the identification of adults and pupae: a review. Mem Inst Oswaldo Cruz 2004; 99:443-70. [PMID: 15543407 DOI: 10.1590/s0074-02762004000500001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A revision is made of the previously poorly studied blackfly fauna from the south-western border of Guyana with Brazil. Notes on the biosystematics of the species found are provided, together with keys and illustrations based on their morphology. Of the 14 species recorded, eight are anthropophilic and two of these (Simulium oyapockense s.l. and S. guianense s.l.) are proven vectors of human onchocerciasis in the nearby Amazonia focus of the disease in neighbouring Brazil.
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Affiliation(s)
- A J Shelley
- Department of Entomology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK.
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17
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Dias APAL, Hernández LM, Maia-Herzog M, Shelley AJ. Simulium lobatoi, new species of blackfly (Diptera: Simuliidae) from the states of Mato Grosso and Goiás, Central Brazil. Mem Inst Oswaldo Cruz 2004; 99:37-43. [PMID: 15057345 DOI: 10.1590/s0074-02762004000100007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
During studies on the taxonomy of the Simuliidae of Brazil, a new species of Simulium was found. Full descriptions of the adults and pupae of this species are described here, its affinities with other species are discussed and its distribution, biology, and medical importance in Brazil are recorded.
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Affiliation(s)
- A P A Luna Dias
- Departamento de Entomologia, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
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18
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Abstract
We have completed the identification of Saccharomyces cerevisiae genes that are defective in previously isolated ldb (low-dye-binding) mutants. This was done by complementation of the mutant's phenotype with DNA fragments from a genomic library and by running standard tests of allelism with single-gene deletion mutants of similar phenotype. The results were as follows: LDB2 is allelic to ERD1; LDB4 to SPC72; LDB5 to RLR1; LDB6 to GON7/YJL184W; LDB7 to YBL006C; LDB9 to ELM1; LDB10 to CWH36; LDB11 to COG1; LDB12 to OCH1; LDB13 to VAN1; LDB14 to BUD32; and LDB15 to PHO85. Since the precise function of some of the genes is not known, these data may contribute to the functional characterization of the S. cerevisiae genome.
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Affiliation(s)
- Isaac Corbacho
- Department of Microbiology, University of Extremadura, 06071 Badajoz, Spain
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19
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Olivero I, Corbacho I, Hernández LM. The ldb1 mutant of Saccharomyces cerevisiae is defective in Pmr1p, the yeast secretory pathway/Golgi Ca(2+)/Mn(2+)-ATPase. FEMS Microbiol Lett 2003; 219:137-42. [PMID: 12594035 DOI: 10.1016/s0378-1097(03)00002-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The LDB1 gene of Saccharomyces cerevisiae was identified by complementation of the ldb1 mutant phenotype with a genomic library. We found that the ldb1 defect is complemented by PMR1 which codes for the yeast secretory pathway/Golgi Ca(2+)/Mn(2+)-ATPase. Besides that, the analysis of a null mutation of the PMR1 gene revealed a phenotype identical to that of ldb1 mutant. Thus, LDB1 must be considered a synonym of PMR1.
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Affiliation(s)
- Isabel Olivero
- Department of Microbiology. University of Extremadura, 06071, Badajoz, Spain
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20
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Hernández LM, Blanco JA, Baz JP, Puentes JL, Millán FR, Vázquez FE, Fernández-Chimeno RI, Grávalos DG. 4'-N-methyl-5'-hydroxystaurosporine and 5'-hydroxystaurosporine, new indolocarbazole alkaloids from a marine Micromonospora sp. strain. J Antibiot (Tokyo) 2000; 53:895-902. [PMID: 11099222 DOI: 10.7164/antibiotics.53.895] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new indolocarbazole alkaloids, 4'-N-methyl-5'-hydroxystaurosporine (2) and 5'-hydroxystaurosporine (3), were isolated together with the known staurosporine (1) from the culture broth of a marine Micromonospora sp. (strain L-31-CLCO-002). The fermentation, structural data and cytotoxic activities of these compounds against various tumor cell lines are given.
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21
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Fernández M, Cuesta S, Jiménez O, García MA, Hernández LM, Marina ML, González MJ. Organochlorine and heavy metal residues in the water/sediment system of the Southeast Regional Park in Madrid, Spain. Chemosphere 2000; 41:801-812. [PMID: 10864151 DOI: 10.1016/s0045-6535(00)00004-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A study into levels of contamination by organochlorine compounds (insecticides and PCBs) and heavy metals (Cd and Pb) in the water/sediment system of the Southeast Regional Park (SERP) in Madrid, Spain, has been carried out. Residue levels of xenobiotics were determined in surface and underground waters and sediments from selected sites throughout the protected area. The results showed these contaminants to be widespread throughout the studied area. p,p'-DDT concentration levels were consistently higher than its metabolite p,p'-DDE, indicating a recent use of this organochlorine insecticide in the area. PCB levels exceeded, in the majority of the cases, the levels taken as the maximum (100 ng/microl) for highly polluted waters. Cd and Pb levels found in water samples were under the detection limits of the methodology used. Pb levels found in sediment samples were higher than Cd.
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Affiliation(s)
- M Fernández
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry (CSIC), Madrid, Spain
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22
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Ramos L, Hernández LM, González MJ. Study of the distribution of the polychlorinated biphenyls in the milk fat globule by supercritical fluid extraction. Chemosphere 2000; 41:881-888. [PMID: 10864161 DOI: 10.1016/s0045-6535(99)00504-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The distribution of polychlorinated biphenyls (PCBs) in the milk fat globule has been studied by sequential extraction of four different lipidic fractions from powdered full-fat milk with supercritical carbon dioxide. Extractions were carried out in the dynamic mode in the pressure range 13.6-23.3 MPa at a temperature of 50 degrees C. The levels of PCBs and short-chain triglycerides (SCT), medium-chain triglycerides (MCT) and long-chain triglycerides (LCT), as well as the cholesterol in these four supercritical fluid extraction (SFE) fractions were determined. Extracts obtained at lower pressures were found to be enriched in PCBs, SCT, MCT and cholesterol, while the concentrations of all these analytes decreased for subsequent extractions. Satisfactory quadratic correlations were found between the PCB and SCT and MCT levels (r2 in the range 0.9-0.999), and between the PCB and cholesterol levels (r2 in the range 0.8-0.999, except for PCB 105) determined in the SFE fractions. These results suggested a similar distribution of the PCBs and the cholesterol in the milk fat globule. This conclusion was also supported by the comparison of the PCBs and the cholesterol chemical structures as well as by the total PCB levels determined by SFE to those obtained by using different extraction methods. The classical requirement for the analysis of this kind of lipophilic pollutants of an exhaustive extraction of the lipids of the matrix to ensure their quantitative recovery has been revised.
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Affiliation(s)
- L Ramos
- Department of I.A. and Environmental Chemistry, I.Q.O. (C.S.I.C.), Madrid, Spain.
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23
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Abstract
We studied the phosphorylation of the inner core region of N-linked oligosaccharides in the mannan defective mutant Saccharomyces cerevisiae mnn2 which was described as unable to synthesize branches on the outer chain. We performed structural studies of the N-oligosaccharides synthesized by the strains mnn2, mnn1mnn2mnn9 and mnn1mnn9ldb8, and the results are compared with previously published structural data of mnn1mnn2mnn10 and mnn1mnn9 [Hernández, L.M., Ballou, L., Alvarado, E., Tsai, P.-K. and Ballou, C.E. (1989) J. Biol. Chem. 264, 13648-13659]. We conclude that the mnn2/ldb8 mutation is responsible for the inhibition of incorporation of phosphate to mannose A(3) (see below), a particular phosphorylation site of the inner core, while phosphorylation at the other possible site (mannose C(1)) is allowed, although it is also reduced. *Phosphorylation sites in mnn1mnn9. (see structure below)
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Affiliation(s)
- I Olivero
- Department of Microbiology, University of Extremadura, Badajoz, Spain
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24
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Hernández LM, Gómara G, Fernández M, Jiménez B, González MJ, Baos R, Hiraldo F, Ferrer M, Benito V, Suñer MA, Devesa V, Muñoz O, Montoro R. Accumulation of heavy metals and As in wetland birds in the area around Doñana National Park affected by the Aznalcollar toxic spill. Sci Total Environ 1999; 242:293-308. [PMID: 10660412 DOI: 10.1016/s0048-9697(99)00397-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The impact of the spill from the mine in Aznalcollar (Seville, Spain) on waterfowl in the Doñana National Park is assessed. The concentrations of Cu, Pb, Cd, Zn nd As in the liver and eggs of 16 species of waterfowl found dead in the Park between April and November 1998 were determined. The highest levels were found for Zn, followed by Cu, Pb, Cd and As. The main parameters related to the accumulation of these elements in the waterfowl studied were species and trophic level. The other variables studied--distance from the spill, days of exposure, sex, size, and age--are important, although this depends on the element studied. Zn and Cu from the spill have entered the food chain of the aquatic birds studied, but Cd, Pb and As have not. There is currently no evidence to suggest that the trace element concentrations measured have reached toxic levels.
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Affiliation(s)
- L M Hernández
- Departamento de I.A. y Química Ambiental, IQOG, CSIC, Madrid, Spain
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25
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Ramos L, Fernández MA, González MJ, Hernández LM. Heavy metal pollution in water, sediments, and earthworms from the Ebro River, Spain. Bull Environ Contam Toxicol 1999; 63:305-311. [PMID: 10475907 DOI: 10.1007/s001289900981] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- L Ramos
- Department of Instrumental Analysis and Environmental Chemistry, Organic Chemistry Institute (CSIC), Juan de la Cierva, 3. 28006 Madrid, Spain
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26
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Abstract
Feasibility of three different extraction methods for the simultaneous determination of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in butter is discussed. The method based on liquid-liquid extraction with water of the non fatty solids from butter dissolved in hexane was found to be the most efficient for the determination of the lipid content and the levels of the investigated pollutants. This method was used to evaluate the background levels of PCBs, PCDDs and PCDFs in butters commercially available in Spain. Broad ranges of PCB, specifically, PCDD and PCDF concentrations were found in the different brands analysed. Levels, profiles and patterns of these pollutants in butter were compared with those previously reported for different Spanish dairy products. The toxic tetra-equivalents of 2,3,7,8-TCDD (1-TEQ) averages for PCDDs and PCDFs in the 21 butter samples analysed were 0.41 and 0.70 pg/g fat basis, respectively. These values were similar or lower than those cited in the literature for other countries.
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Affiliation(s)
- L Ramos
- Department of I.A. and Environmental Chemistry, Madrid, Spain
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27
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Ramos L, Eljarrat E, Hernández LM, Rivera J, González MJ. Comparative study of methodologies for the analysis of PCDDs and PDCFs in powdered full-fat milk. PCB, PCDD and PCDF levels in commercial samples from Spain. Chemosphere 1999; 38:2577-2589. [PMID: 10204239 DOI: 10.1016/s0045-6535(98)00465-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Feasibility of two different extraction methods involving solid-liquid extraction and Soxhlet extraction, previously used for the determination of lipid contents and PCB levels on powdered full-fat milk, are now examined for simultaneous PCDD/F analysis. The results of this study are consistent with those found for PCBs. The solid-liquid procedure provides the most efficient extraction of both labelled spiked and endogenous PCDD/Fs with the lowest variability. The average recoveries were 101% (R.S.D. = 6.9%) for 13C12-2,3,7,8-TCDD and 95% (R.S.D. = 11%) for 13C12-1,2,3,4,7,8-HxCDD. The R.S.D.s for endogenous 2,3,7,8-PCDD/Fs were in the 9.3-25% range. In addition, this methodology simplified the subsequent clean-up step as it allowed a semi-selective extraction of the apolar lipids from the milk. The proposed method was applied to simultaneous PCB and PCDD/F analyses in different brands of powdered full-fat milks commercially available in Spain. In all cases, very similar PCB and PCDD/F levels were found. Differences among batches from the same manufacturer were even lower. The total i-TEQ average for PCDDs and PCDFs in the 22 powdered full-fat milk samples analysed was 1.87 pg/g fat basis. This value was similar to those found in cow's milk from other European countries.
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Affiliation(s)
- L Ramos
- Department of I.A. and Environmental Chemistry, I.Q.O. (C.S.I.C.), Juan de la Cierva, Madrid, Spain
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28
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Ramos L, González MJ, Hernández LM. Sequential extraction of copper, lead, cadmium, and zinc in sediments from Ebro river (Spain): relationship with levels detected in earthworms. Bull Environ Contam Toxicol 1999; 62:301-8. [PMID: 10085173 DOI: 10.1007/s001289900874] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- L Ramos
- Department of Instrumental Analysis and Environmental Chemistry, Organic Chemistry Institute (CSIC), Juan de la Cierva, 3, 28006 Madrid, Spain
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29
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Jimènez B, Gonzàlez MJ, Hernández LM, Eljarrat E, Rivera J, Fossi MC. 2,3,7,8-Substituted PCDDs and PCDFs in sea lion (Otaria flavescens) skin biopsies from two South-western Atlantic populations. Chemosphere 1999; 38:507-515. [PMID: 10901670 DOI: 10.1016/s0045-6535(98)00199-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Congener specific 2,3,7,8-chlorinated PCDDs and PCDFs were determined in skin biopsies taken from sea lions (Otaria flavescens) living in two areas of the South-western Atlantic on the coast of Argentina (Mar del Plata and Punta Bermeja). This is the first report on PCDDs and PCDFs in sea lion skin biopsies from the southern hemisphere. Differences were found in the congener pattern according to the sampling area. Animals living in the polluted area (Mar del Plata harbour) had detectable levels of all seventeen 2,3,7,8-substituted congeners. Sea lions living in a control environment (Punta Bermeja, Patagonia) only exhibited 5 detectable congeners out of all seventeen 2,3,7,8-substituted congeners. However, total levels were low in both colonies studied. These data are consistent with previous work which has indicated that dioxins occur at relatively low levels in marine mammals, possibly due to rapid catabolism or elimination.
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Affiliation(s)
- B Jimènez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, C.S.I.C., Madrid, Spain
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30
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Mañas P, Olivero I, Hernández LM. Proteolytic processing of a secreted glycoprotein and O-glycosylation of mannoproteins are affected in the N-glycosylation mutant Saccharomyces cerevisiae ldb1. Biochim Biophys Acta 1998; 1380:320-8. [PMID: 9555075 DOI: 10.1016/s0304-4165(97)00160-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In a previous work [P.I. Mañas, I. Olivero, M. Avalos, L.M. Hernández, Glycobiology, 7 (1997) 487-497], we described the isolation and characterization of the Saccharomyces cerevisiae ldb1 mutant which is affected in several steps of the N-glycosylation of mannoproteins probably due to a malfunction of the Golgi apparatus. Here, we found that two further functions assigned to the Golgi cisternae are also affected in the mutant: proteolytic processing of a secreted protein and O-glycosylation. We found that around 70% of the exoglucanase activity that is secreted into the culture medium by ldb1 bears an extra tetrapeptide in its NH2-terminus due to incomplete proteolytic processing. The O-linked oligosaccharides from ldb1 mnn1 were indistinguishable from those synthesized by the parental strain mnn1. However, when the O-oligosaccharides from the wild type and ldb1 were compared, we found a significant decrease in the tetrasaccharide in the latter, as well as a concomitant increase in the disaccharide, suggesting a defect in the Kre2p/Mnt1p involved in the transfer of the third mannose of these residues.
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Affiliation(s)
- P Mañas
- Department of Microbiology, University of Extremadura, 06071 Badajoz, Spain
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31
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Ramos L, Eljarrat E, Hernández LM, Alonso L, Rivera J, González MJ. Levels of PCDDs and PCDFs in farm cow's milk located near potential contaminant sources in Asturias (Spain). Comparison with levels found in control, rural farms and commercial pasteurized cow's milks. Chemosphere 1997; 35:2167-2179. [PMID: 9375353 DOI: 10.1016/s0045-6535(97)00295-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Cows milk samples from 12 dairy farms in Spain and 23 samples of pasteurised cows milk were analysed for PCDD/F. Farms located in rural areas without specific dioxin sources (background levels) ranged from 1.3 to 2.47 pg TEQ/g fat basis. These values were slightly lower than those found in milk from the vicinity of potential dioxin emission sources (waste incinerator, chemical and metallurgical industry) and similar to milk near paper industry. The waste incinerator seems to be the emission source with the highest influence on the cows milk gathered in its vicinity. Thus, milk near the waste incinerator exhibited the highest PCDD/F levels, the highest PCDF/PCDD ratio and its congener PCDD pattern showed the highest difference respect to its control point. The PCDD/F average concentrations found in pasteurised commercial milk were lower than those found in raw milk and were comparable to those found in retail milk from other countries.
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Affiliation(s)
- L Ramos
- Institute of Productos Lacteos de Asturias (CSIC), Villaviciosa, Spain
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32
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Abstract
Optic nerve hypoplasia is an important malformation of the fetal alcohol syndrome whose teratogenic mechanisms are unknown. In our experimental model we have quantified the concentration of ethanol and acetaldehyde in the retina and vitreous humor of the developing chick. The effect of ethanol alone during retinal development was analyzed by conventional histological techniques and by immunostaining. A single injection of ethanol in the vitelline sac at the beginning of retinal cell differentiation retarded synaptogenesis in the inner plexiform layer and produced abundant ganglion cell death and a sharp diminution of myelinic axons. Our observations could help to explain certain alterations described in children exposed to ethanol during the development of their nervous system.
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Affiliation(s)
- C E Chmielewski
- Instituto de Biología del Desarrollo, Facultad de Medicina, Universidad de Sevilla, Spain
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33
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Ramos L, Hernández LM, González MJ. Variation of PCB congener levels during lactation period and relationship to their molecular structure. Arch Environ Contam Toxicol 1997; 33:97-103. [PMID: 9216877 DOI: 10.1007/s002449900229] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The levels of 22 polychlorinated biphenyl (PCB) congeners, including 13 coplanars (non-, mono-, and di-ortho-substituted chlorine) and 9 noncoplanar chirals (tri- and tetra-ortho-substituted chlorine), were measured in mothers milk from different mothers throughout their lactation periods. Important variations were found in the total PCB levels and PCB congener levels. The maximum PCB variations were found during the first weeks of lactation. Of the 22 PCBs analyzed, the most abundant, and those which had the highest variations were PCB-101, 118, 138, 151, 170, and 180, while the least abundant were the PCB-77, 126, 169, and 167, which also showed the lowest variation. Among the nonortho-substituted PCB congeners, PCB-77 was the predominant PCB in three of the four lactation periods studied, while PCB-126 was dominant in the last case. A relationship has been found between the levels and variations of total PCBs in the milk supplied by the different mothers and their dietary habits, weight changes and illness suffered during their pregnancy and lactation. The 22 PCB congeners investigated have been grouped in five categories according to their concentration variations in milk throughout the four different lactation periods. The PCB congeners included in each of the five groups have similar molecular structures. It has been found that coplanarity, number of chlorines and their molecular distribution, and neighbor H atoms were determinant factors in the process of PCB mobilization from the mothers' fats (where it had been able to accumulate throughout her life in the case of her first child) to the breast milk she delivered.
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Affiliation(s)
- L Ramos
- Department of Instrumental Analysis and Environmental Chemistry, Organic Chemistry Institute (CSIC), 3, Juan de la Cierva, 28006 Madrid, Spain
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Mañas P, Olivero I, Avalos M, Hernández LM. Isolation of new nonconditional Saccharomyces cerevisiae mutants defective in asparagine-linked glycosylation. Glycobiology 1997; 7:487-97. [PMID: 9184829 DOI: 10.1093/glycob/7.4.487] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We describe the isolation and partial characterization of Saccharomyces cerevisiae nonconditional mutants that show defects in N-glycosylation of proteins. The selection method is based on the reduction of affinity for the ion exchanger QAE-Sephadex as a consequence of the decrease in the negative charge of the cell surface. This characteristic reflects a decrease in the incorporation of mannosylphosphate units into the N-linked oligosaccharides of the mannoproteins. The mutants exhibit low affinity for the basic dye alcian blue and for that reason we have called them Idb (low dye binding) mutants. Eight of the complementation groups seem to be new as shown by complementation studies with previously isolated mutants of similar phenotype. Four of the groups showed a significant reduction in the number and/or size of the N-linked oligosaccharides attached to secreted invertase. We have analyzed the N-linked oligosaccharides of Idb1 and Idb2, the mutants that show the most drastic reduction in the affinity for the alcian blue dye. In both cases, the purified endo H-released oligosaccharides from the mannoproteins lacked detectable amounts of phosphate groups as shown by ion exchange chromatography and the 1H NMR spectra. In addition, Ibd1 synthesizes a truncated and unbranched outer chain lacking any alpha (1,2) linked mannoses attached to the alpha (1,6) linear backbone.
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Affiliation(s)
- P Mañas
- Department of Microbiology, University of Extermadura, Badajoz, Spain
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35
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Serrano R, Fernández MA, Hernández LM, Hernández M, Pascual P, Rabanal RM, González MJ. Coplanar polychlorinated biphenyl congeners in shark livers from the North-Western African Atlantic Ocean. Bull Environ Contam Toxicol 1997; 58:150-157. [PMID: 8952939 DOI: 10.1007/s001289900313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- R Serrano
- Department of I.A. and Environmental Chemistry, IQO (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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36
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González MJ, Jiménez B, Hernández LM, Gonnord MF. Levels of PCDDs and PCDFs in human milk from populations in Madrid and Paris. Bull Environ Contam Toxicol 1996; 56:197-204. [PMID: 8720091 DOI: 10.1007/s001289900030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- M J González
- Institute of Organic Chemistry (CSIC), Madrid, Spain
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37
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González MJ, Ramos L, Hernández LM. Levels of coplanar PCBs in human breast milk at different times of lactation. Bull Environ Contam Toxicol 1995; 54:349-356. [PMID: 7749265 DOI: 10.1007/bf00195104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- M J González
- Department of A.I. & Environmental Chemistry, Institute of Organic Chemistry (CSIC), Madrid, Spain
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38
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Basco RD, Hernández LM, Muñox MD, Olivero I, Andaluz E, Del Rey F, Larriba G. Selective elongation of the oligosaccharide attached to the second potential glycosylation site of yeast exoglucanase: effects on the activity and properties of the enzyme. Biochem J 1994; 304 ( Pt 3):917-22. [PMID: 7818498 PMCID: PMC1137420 DOI: 10.1042/bj3040917] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Three exoglucanases (Exgs), ExgIa, ExgIb and Exg325, are secreted by Saccharomyces cerevisiae cells. They share a common protein portion with two potential glycosylation sites (sequons) but differ in the amount of N-linked carbohydrate [Basco, R.D., Muñoz, M.D., Hernández, L.M., Váquez de Aldana, C. and Larriba, G. (1993) Yeast 9, 221-234]. ExgIb contains two short oligosaccharides attached to asparagines (Asn) 165 and 325 of the primary translation product [Hernández, L.M., Olivero, I., Alvarado, E. and Larriba, G. (1992) Biochemistry 31, 9823-9831]. Exg325 carries a single, short oligosaccharide bound to Asn325 whereas ExgIa has at least one large oligosaccharide, since it has not been produced by mutant mnn9. To address the question of the origin of ExgIa, both sequons were individually mutated by substituting Gln for Asn. An ExgIa-like isoenzyme was still secreted by mutant Exg165 but not by mutant Exg325. Additional studies on sequential deglycosylation of ExgIa with endo-beta-N-acetylglucosaminidase H (endo H), the susceptibility of both oligosaccharides to the endoglycosidase, and analysis of the presence of GlcNAc at both asparagine residues after total deglycosylation with endo H, indicated that ExgIa contained two oligosaccharides, a short one bound to Asn165 and a large one bound to Asn325, and, accordingly, originated from ExgIb. The elongation of the second oligosaccharide did not result in a higher stability towards thermal inactivation or unfolding, or in an increased resistance to proteases as compared with ExgIb; however, the affinity of the enzyme towards laminarin decreased by 50%. This site-specific elongation occurred in the oligosaccharide that was less susceptible to endo H, indicating that these properties are determined by different conformational constraints.
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Affiliation(s)
- R D Basco
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
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Muñoz MD, Hernández LM, Basco R, Andaluz E, Larriba G. Glycosylation of yeast exoglucanase sequons in alg mutants deficient in the glucosylation steps of the lipid-linked oligosaccharide. Presence of glucotriose unit in Dol-PP-GlcNAc2Man9Glc3 influences both glycosylation efficiency and selection of N-linked sites. Biochim Biophys Acta 1994; 1201:361-6. [PMID: 7803465 DOI: 10.1016/0304-4165(94)90063-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The major exoglucanase (Exg) from Saccharomyces cerevisiae has a short N-linked oligosaccharide attached to each of the potential glycosylation sites present in the primary translation product. We have studied the Exg glycoforms secreted by alg mutants deficient in the final steps of the assembly of dolichol-P-P-GlcNAc2-Man9-Glc3. These mutants synthesize and transfer to nascent proteins truncated oligosaccharides lacking two (alg8) or three (alg5 and alg6) glucoses. In addition to the enzyme carrying both sugar chains (ExgII), all three mutants secreted underglycosylated forms containing one oligosaccharide attached to either the first (ExgII'1/2) or the second (ExgII1/2) potential glycosylation site, and nonglycosylated enzyme (ExgTuni). As compared with alg5 and alg6, alg8 secreted a higher proportion of ExgII, which was paralleled by a significant drop in the proportion of ExgTuni and, to a lesser extent, of ExgII1/2. The presence of a single glucose attached to Dol-P-P-GlcNAc2-Man9 therefore increases the efficiency of transfer of the that oligosaccharide to the protein acceptor in vivo. Moreover, whereas ExgII'1/2 was never secreted by wild type cells, it was the most abundant underglycosylated form secreted by all three mutants. These mutants are affected in the efficiency at which the individual sequons that are glycosylated, and this suggests a role for the glucotriose unit in the selection of the sequons are to be occupied in glycoproteins synthesized by wild type.
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Affiliation(s)
- M D Muñoz
- Departmento de Microbiología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
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Tomás JF, Hernández LM, Peñarrubia MJ, Figuera A, Jiménez ML, Cámara R, Arranz R, López JL, Cruz J, Fernández-Rañada JM. [Early bacterial infections in 103 patients treated with bone marrow transplantation]. Sangre (Barc) 1994; 39:191-6. [PMID: 7940049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
PURPOSE To analyse bacterial infections in the period immediately following bone-marrow transplantation. PATIENTS AND METHODS A retrospective study of 174 febrile episodes appearing on 103 patients treated with bone-marrow transplantation in 1990 and 1991 was carried out, special attention being paid to the bacterial infections. RESULTS Virtually all patients (100/103) had at least one febrile episode, and its infectious character was documented in 54% of the instances. Gram-positive germs were most commonly present, 85% of the bacteria isolated, and coagulase-negative staphylococci, especially St epidermidis, predominated (60%). Different species of streptococci, mostly of the viridans group, were isolated in 22% of the blood cultures attained in the first febrile episodes. The mortality due to infection in the series as a whole was 4.8%. CONCLUSIONS Infections by gram-positive germs, especially coagulase-negative staphylococci, are commonly found among the patients subjected to bone-marrow transplantation. Increased streptococci infections, mostly of the viridans group, are also appreciated. These facts, along with decreased number of gram-negative infections, must be born in mind when designing initial antimicrobial coverage for these patients.
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Affiliation(s)
- J F Tomás
- Servicio de Hematología, Hospital de la Princesa, Madrid
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41
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Hernández LM, Fernández MA, Jiménez B, González MJ, García JF. Organochlorine pollutants in meats and cow's milk from Madrid (Spain). Bull Environ Contam Toxicol 1994; 52:246-53. [PMID: 8123985 DOI: 10.1007/bf00198495] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Affiliation(s)
- L M Hernández
- Department of Environmental Contamination, Institute of Organic Chemistry, (CSIC), Madrid, Spain
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42
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Guillén A, Ibáñez C, Pérez JL, Hernández LM, González MJ, Fernández MA, Fernández R. Organochlorine residues in Spanish common pipistrelle bats (Pipistrellus pipistrellus). Bull Environ Contam Toxicol 1994; 52:231-237. [PMID: 8123983 DOI: 10.1007/bf00198493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- A Guillén
- Institute of Organic Chemistry (CSIC), Madrid, Spain
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43
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Hernández LM, Ibáñez C, Fernández MA, Guillén A, González MJ, Pérez JL. Organochlorine insecticide and PCB residues in two bat species from four localities in Spain. Bull Environ Contam Toxicol 1993; 50:871-877. [PMID: 8495064 DOI: 10.1007/bf00209952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- L M Hernández
- Institute of Organic Chemistry (CSIC), Madrid, Spain
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44
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Basco RD, Muñoz MD, Hernández LM, Vazquez de Aldana C, Larriba G. Reduced efficiency in the glycosylation of the first sequon of Saccharomyces cerevisiae exoglucanase leads to the synthesis and secretion of a new glycoform of the molecule. Yeast 1993; 9:221-34. [PMID: 8488724 DOI: 10.1002/yea.320090303] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
In addition to exoglucanases (EXGs) I and II, old cultures of Saccharomyces cerevisiae secreted into the culture medium a new immunologically-related material that exhibited exoglucanase activity. The new exoglucanase (EXGII1/2) was purified from stationary-phase cultures. It turned out to be a glycoprotein whose protein portion was identical to that of the other two isoenzymes in terms of ionic properties, size, amino acid composition and NH2-terminal sequence (25 residues). Disruption of the structural gene encoding EXGs I and II resulted in a strain unable to secrete all three isoenzymes. EXGII1/2 was indistinguishable in terms of molecular weight from the single intermediate detected during the deglycosylation (mediated by endo H) of EXGII by sodium dodecyl sulphate-polyacrylamide gel electrophoresis. Thus, the new isoenzyme contains only one of the two slightly elongated mannan inner cores present in enzyme II. Two intermediates were, however, detected when the deglycosylation of EXGII was monitored by ion-exchange chromatography (high-pressure liquid chromatography). Site-directed mutagenesis indicated that the major intermediate, which eluted at about the same position as enzyme II1/2, corresponded to protein molecules carrying the oligosaccharide attached to the Asn of the second sequon, whereas the minor one carried the oligosaccharide in the first potential glycosylation site. Several lines of evidence indicate that EXGII1/2 is a biosynthetic product resulting from an imbalance between the rate of protein synthesis and the glycosylation capabilities of the glycosylation machinery.
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Affiliation(s)
- R D Basco
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
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45
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Hernández LM, Fernández MA, Hoyas E, González MJ, García JF. Organochlorine insecticide and polychlorinated biphenyl residues in human breast milk in Madrid (Spain). Bull Environ Contam Toxicol 1993; 50:308-315. [PMID: 8422534 DOI: 10.1007/bf00191738] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- L M Hernández
- Department of Environmental Contamination, Institute of Organic Chemistry (CSIC), Madrid, Spain
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46
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Negro JJ, Donázar JA, Hiraldo F, Hernández LM, Fernández MA. Organochlorine and heavy metal contamination in non-viable eggs and its relation to breeding success in a Spanish population of Lesser Kestrels (Falco naumanni). Environ Pollut 1993; 82:201-205. [PMID: 15091790 DOI: 10.1016/0269-7491(93)90118-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/1992] [Accepted: 08/19/1992] [Indexed: 05/24/2023]
Abstract
Residues of organochlorines, polychlorinated biphenyls (PCBs), and heavy metals (mercury, cadmium, lead, copper and zinc) were measured in unhatched eggs of Lesser Kestrels (Falco naumanni) collected in southern Spain in 1988-1991. Although contaminants were detected in all eggs, the amounts were generally below levels known to have negative effects on reproduction. This is consistent with the relatively high hatching rate (about 80%) in the studied population. The nestling mortality was severe, however, apparently due to starvation. It cannot be discounted that pesticides had an indirect effect on the kestrel's breeding success by reducing the populations of prey.
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Affiliation(s)
- J J Negro
- Estación Biológica de Doñana, CSIC, Apdo. 1056, 41080 Sevilla, Spain
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47
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Vidal-Madjar C, Jaulmes A, Sébille B, González MJ, Jiménez B, Hernández LM. Study of protein-ligand binding effects by direct chromatographic on-column injection. J Chromatogr 1992; 584:11-6. [PMID: 1487510 DOI: 10.1016/0378-4347(92)80004-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The direct zonal on-column injection method was applied to a high-performance liquid chromatographic study of pollutant-protein binding interactions in solution. The protein and the protein-ligand complex are excluded on the basis of the size from the diol support, and the free ligand penetrates into the pores and is more retained. The pattern of the ligand elution profile depends on the protein-ligand dissociation constant. This effect was quantitatively analysed by developing a numerical simulation algorithm in which the column is divided into slices of given thickness. The column length, flow-rate and shape of the injection signal are given as input parameters. A global dispersion coefficient accounts for peak broadening. A rapid equilibrium is assumed with the hypothesis that a monovalent ligand interacts with a single binding site on the protein. The interaction of bovine serum albumin with pentachlorophenol was studied, and an apparent dissociation constant for the protein-ligand complex was determined by fitting the theoretical profile to the experimental one. The effect of the acetonitrile content in the solvent was studied. An important decrease of the dissociation constant is observed that affects the chromatographic elution pattern.
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Affiliation(s)
- C Vidal-Madjar
- Laboratoire de Physico-Chimie des Biopolymères, CNRS UM 27, Université Paris Val de Marne, Thiais, France
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48
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Abstract
We have determined the structures of the N-linked carbohydrate chains, released by endo H, of exoglucanase II that are secreted by wild-type Saccharomyces cerevisiae and by the mnn1 mnn9 and mnn1 glycosylation mutants. The mnn9 mutation does not significantly affect N-linked oligosaccharides of exoglucanase II since we found almost identical structures in both mutant strains consisting of a slightly enlarged core with the basic structure shown in A (where M = mannose). Most of the molecules (77%) were phosphorylated on one of the starred mannoses (34%) or on both (43%) with a diesterified (alpha M-->P-->) or monoesterified phosphate group. In addition, some of the molecules apparently escape normal processing and retain the alpha-(1-->2)-linked mannose (italicized) and/or the three glucoses that are characteristic of the lipid-linked precursor (structure B). In the wild type, we found the same basic structure but more [formula; see text] than 90% of the molecules were modified with one to four alpha-(1-->3)-linked mannoses, which were absent in the strains bearing the mnn1 mutation (structure C). The proportion of acidic components was similar to that found in the mutants (78%), although, in this case, the monophosphorylated forms were more abundant (50%) than the diphosphorylated ones (28%). Most of the phosphate groups (69%) were diesterified by a disaccharide (alpha M-->3 alpha M-->P-->) instead of the single mannose found when the mnn1 mutation was present. In both mnn1 and wild type 10-15% of the oligosaccharides had an extra alpha-(1-->6)-linked mannose in the outer chain, a structure described in the recently isolated vrg1 mutant [Ballou, L., Hitzeman, R.A., Lewis, M. S., & Ballou, C. E. (1991) Proc. Natl. Acad. Sci. U.S.A. 88, 3209-3212].
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Affiliation(s)
- L M Hernández
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
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Gérvas JJ, Hernández LM, Martí A, García-Sagredo P, Elvira P, Estévez A, Salcedo JA, Pérez Fernández MM. [Physician-patient communication and health education]. Aten Primaria 1991; 8:202-5. [PMID: 1888860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of the present study was to analyze the content in health education of the patient-physician interview. The study was observational and descriptive. The target population were the patients attending the general practices of the Social Security clinics. With permission of patients and physicians, 53 visits of two general practitioners were recorded on tape. 48 interviews were analyzed with definition of activities (asking, answering, discussing, etc.) and contents (health problems, treatment, health education, etc.). Health education was 10% of the contents, and it was associated with the physician's activity of commenting/instructing and with the patient's activity of commenting/asking.
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50
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Ramírez M, Muñoz MD, Basco RD, Giménez-Gallego G, Hernández LM, Larriba G. Two glycosylation patterns for a single protein (exoglucanase) in Saccharomyces cerevisiae. FEMS Microbiol Lett 1990; 59:43-8. [PMID: 2125957 DOI: 10.1111/j.1574-6968.1990.tb03796.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Exoglucanases (beta-glucosidases) I and II secreted into the culture medium by Saccharomyces cerevisiae were purified from cell cultures harvested at the early exponential phase of growth in order to avoid contamination of the second by a new immunologically-related material. The amino acid composition of the purified enzymes was roughly the same. In addition, both exoglucanases exhibited an identical NH2-terminal sequence (50 residues). These results confirm our previous results about the identity of the protein moieties of both enzymes. Exoglucanase I appears to arise by elongation of one or both short oligosaccharides present in enzyme II.
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Affiliation(s)
- M Ramírez
- Departamento de Microbiología, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
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