The Prokaryotes
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Assemblage and Functioning of Bacterial Communities in Soil and Rhizosphere Issue Date: 2016-06-08
Cover Page The handle http://hdl.handle.net/1887/40026 holds various files of this Leiden University dissertation. Author: Yan Y. Title: Assemblage and functioning of bacterial communities in soil and rhizosphere Issue Date: 2016-06-08 Assemblage and functioning of bacterial communities in soil and rhizosphere Yan Yan 闫 燕 503396-L-bw-Yan Assemblage and functioning of bacterial communities in soil and rhizosphere PhD thesis, Leiden University, The Netherlands. The research described in this thesis was performed at the Netherlands Institute of Ecology, NIOO-KNAW and at the Institute of Biology of Leiden University. 2016 闫燕 Yan Yan. No part of this thesis may be reoroduced or transmitted without prior written permission of the author. Cover (封面): Tree Roots (树根), Vincent van Gogh (梵⾼), 1890. Inspiration to rhizosphere. Lay-out by Yan Yan Printed by Ipskamp Printing ISBN: 978-94-028-0205-4 503396-L-bw-Yan Assemblage and functioning of bacterial communities in soil and rhizosphere Proefschrift ter verkrijging van de graad van Doctor aan de Universiteit Leiden, op gezag van Rector Magnificus prof.mr.C.J.J.M.Stolker, volgens besluit van het College voor Promoties te verdedigen op woensdag 8 juni 2016 klokke 16.15 uur door Yan Yan geboren te Shijiazhuang, Hebei, China in 1986 503396-L-bw-Yan Promotiecommissie Promotor: Prof. dr. J. A. van Veen Promotor: Prof. dr. P. G. L. Klinkhamer Co-promotor: Dr. E. E. Kuramae, Nederlands Instituut voor Ecologie-KNAW Overige leden Prof. dr. H.P.Spaink Prof. dr. G.A.Kowalchuk, Universiteit Utrecht Prof. dr. Jos Raaijmakers Prof. -
Method for Producing Methacrylic Acid And/Or Ester Thereof
(19) TZZ _T (11) EP 2 894 224 A1 (12) EUROPEAN PATENT APPLICATION published in accordance with Art. 153(4) EPC (43) Date of publication: (51) Int Cl.: 15.07.2015 Bulletin 2015/29 C12P 7/62 (2006.01) C12N 15/09 (2006.01) (21) Application number: 13835104.4 (86) International application number: PCT/JP2013/005359 (22) Date of filing: 10.09.2013 (87) International publication number: WO 2014/038216 (13.03.2014 Gazette 2014/11) (84) Designated Contracting States: (72) Inventors: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB • SATO, Eiji GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO Yokohama-shi PL PT RO RS SE SI SK SM TR Kanagawa 227-8502 (JP) Designated Extension States: • YAMAZAKI, Michiko BA ME Yokohama-shi Kanagawa 227-8502 (JP) (30) Priority: 10.09.2012 JP 2012198840 • NAKAJIMA, Eiji 10.09.2012 JP 2012198841 Yokohama-shi 31.01.2013 JP 2013016947 Kanagawa 227-8502 (JP) 30.07.2013 JP 2013157306 • YU, Fujio 01.08.2013 JP 2013160301 Yokohama-shi 01.08.2013 JP 2013160300 Kanagawa 227-8502 (JP) 20.08.2013 JP 2013170404 • FUJITA, Toshio Yokohama-shi (83) Declaration under Rule 32(1) EPC (expert Kanagawa 227-8502 (JP) solution) • MIZUNASHI, Wataru Yokohama-shi (71) Applicant: Mitsubishi Rayon Co., Ltd. Kanagawa 227-8502 (JP) Tokyo 100-8253 (JP) (74) Representative: Hoffmann Eitle Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München (DE) (54) METHOD FOR PRODUCING METHACRYLIC ACID AND/OR ESTER THEREOF (57) To provide a method for directly and efficiently producing methacrylic acid in a single step from renew- able raw materials and/or biomass arising from the utili- zation of the renewable raw materials. -
Validation of the Asaim Framework and Its Workflows on HMP Mock Community Samples
Validation of the ASaiM framework and its workflows on HMP mock community samples The ASaiM framework and its workflows have been tested and validated on two mock metagenomic data of an artificial community (with 22 known microbial strains). The datasets are available on EBI metagenomics database (project accession number: SRP004311). First we checked that the targeted abundances (based on number of PCR product) from both mock datasets were similar to the effective abundance (by mapping reads on reference genomes). Second, taxonomic and functional results produced by the ASaiM framework have been extensively analyzed and compared to expectations and to results obtained with the EBI metagenomics pipeline (S. Hunter et al. 2014). For these datasets, the ASaiM framework produces accurate and precise taxonomic assignations, different functional results (gene families, pathways, GO slim terms) and results combining taxonomic and functional information. Despite almost 1.4 million of raw metagenomic sequences, these analyses were executed in less than 6h on a commodity computer. Hence, the ASaiM framework and its workflows are proven to be relevant for the analysis of microbiota datasets. 1Data On EBI metagenomics database, two mock community samples for Human Microbiome Project (HMP) are available. Both samples contain a genomic mixture of 22 known microbial strains. Relative abundance of each strain has been targeted using the number of PCR product of their respective 16S sequences (Table 1). In first sample (SRR072232), the targeted 16S copies of the strains vary by up to four orders of magnitude between the strains (Table 1), whereas in second sample (SRR072233) the same 16S copy number is targeted for each strain (Table 1). -
Ecology and Epidemiology of Campylobacter Jejuni in Broiler Chickens
Ecology and Epidemiology of Campylobacter jejuni in Broiler Chickens A DISSERTATION SUBMITTED TO THE FACULTY OF THE UNIVERSITY OF MINNESOTA BY Hae Jin Hwang IN PARTIALL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Dr. Randall Singer, Dr. George Maldonado June 2019 © Hae Jin Hwang, 2019 Acknowledgements I would like to sincerely thank my advisor, Dr. Randall Singer, for his intellectual guidance and support, great patience, and mentorship, which made this dissertation possible. I would also like to thank Dr. George Maldonado for his continuous encouragement and support. I would further like to thank my thesis committee, Dr. Richard Isaacson and Dr. Timothy Church, for their guidance throughout my doctoral training. I thank all my friends and colleagues I met over the course of my studies. I am especially indebted to my friends, Dr. Kristy Lee, Dr. Irene Bueno Padilla, Dr. Elise Lamont, Madhumathi Thiruvengadam, Dr. Kaushi Kanankege and Dr. Sylvia Wanzala, for their support and friendship. Heartfelt gratitude goes to my family, for always believing in me, encouraging me and helping me get through the difficult and stressful times during my studies. Lastly, I thank Sven and Bami for being the best writing companions I could ever ask for. i Abstract Campylobacteriosis, predominantly caused by Campylobacter jejuni, is a common, yet serious foodborne illness. With consumption and handling of poultry products as the most important risk factor of campylobacteriosis, reducing Campylobacter contamination in poultry products is considered the best public health intervention to reduce the burden and costs associated with campylobacteriosis. To this end, there is a need to improve our understanding of epidemiology and ecology of Campylobacter jejuni in poultry. -
Inoculation with Mycorrhizal Fungi and Irrigation Management Shape the Bacterial and Fungal Communities and Networks in Vineyard Soils
microorganisms Article Inoculation with Mycorrhizal Fungi and Irrigation Management Shape the Bacterial and Fungal Communities and Networks in Vineyard Soils Nazareth Torres † , Runze Yu and S. Kaan Kurtural * Department of Viticulture and Enology, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA; [email protected] (N.T.); [email protected] (R.Y.) * Correspondence: [email protected] † Current address: Advanced Fruit and Grape Growing Group, Public University of Navarra, 31006 Pamplona, Spain. Abstract: Vineyard-living microbiota affect grapevine health and adaptation to changing environ- ments and determine the biological quality of soils that strongly influence wine quality. However, their abundance and interactions may be affected by vineyard management. The present study was conducted to assess whether the vineyard soil microbiome was altered by the use of biostimulants (arbuscular mycorrhizal fungi (AMF) inoculation vs. non-inoculated) and/or irrigation management (fully irrigated vs. half irrigated). Bacterial and fungal communities in vineyard soils were shaped by both time course and soil management (i.e., the use of biostimulants and irrigation). Regarding alpha diversity, fungal communities were more responsive to treatments, whereas changes in beta diversity were mainly recorded in the bacterial communities. Edaphic factors rarely influence bacte- rial and fungal communities. Microbial network analyses suggested that the bacterial associations Citation: Torres, N.; Yu, R.; Kurtural, were weaker than the fungal ones under half irrigation and that the inoculation with AMF led to S.K. Inoculation with Mycorrhizal the increase in positive associations between vineyard-soil-living microbes. Altogether, the results Fungi and Irrigation Management highlight the need for more studies on the effect of management practices, especially the addition Shape the Bacterial and Fungal of AMF on cropping systems, to fully understand the factors that drive their variability, strengthen Communities and Networks in Vineyard Soils. -
Successful Drug Discovery Informed by Actinobacterial Systematics
Successful Drug Discovery Informed by Actinobacterial Systematics Verrucosispora HPLC-DAD analysis of culture filtrate Structures of Abyssomicins Biological activity T DAD1, 7.382 (196 mAU,Up2) of 002-0101.D V. maris AB-18-032 mAU CH3 CH3 T extract H3C H3C Antibacterial activity (MIC): S. leeuwenhoekii C34 maris AB-18-032 175 mAU DAD1 A, Sig=210,10 150 C DAD1 B, Sig=230,10 O O DAD1 C, Sig=260,20 125 7 7 500 Rt 7.4 min DAD1 D, Sig=280,20 O O O O Growth inhibition of Gram-positive bacteria DAD1 , Sig=310,20 100 Abyssomicins DAD1 F, Sig=360,40 C 75 DAD1 G, Sig=435,40 Staphylococcus aureus (MRSA) 4 µg/ml DAD1 H, Sig=500,40 50 400 O O 25 O O Staphylococcus aureus (iVRSA) 13 µg/ml 0 CH CH3 300 400 500 nm 3 DAD1, 7.446 (300 mAU,Dn1) of 002-0101.D 300 mAU Mode of action: C HO atrop-C HO 250 atrop-C CH3 CH3 CH3 CH3 200 H C H C H C inhibitior of pABA biosynthesis 200 Rt 7.5 min H3C 3 3 3 Proximicin A Proximicin 150 HO O HO O O O O O O O O O A 100 O covalent binding to Cys263 of PabB 100 N 50 O O HO O O Sea of Japan B O O N O O (4-amino-4-deoxychorismate synthase) by 0 CH CH3 CH3 CH3 3 300 400 500 nm HO HO HO HO Michael addition -289 m 0 B D G H 2 4 6 8 10 12 14 16 min Newcastle Michael Goodfellow, School of Biology, University Newcastle University, Newcastle upon Tyne Atacama Desert In This Talk I will Consider: • Actinobacteria as a key group in the search for new therapeutic drugs. -
Phenotypic and Microbial Influences on Dairy Heifer Fertility and Calf Gut Microbial Development
Phenotypic and microbial influences on dairy heifer fertility and calf gut microbial development Connor E. Owens Dissertation submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy In Animal Science, Dairy Rebecca R. Cockrum Kristy M. Daniels Alan Ealy Katharine F. Knowlton September 17, 2020 Blacksburg, VA Keywords: microbiome, fertility, inoculation Phenotypic and microbial influences on dairy heifer fertility and calf gut microbial development Connor E. Owens ABSTRACT (Academic) Pregnancy loss and calf death can cost dairy producers more than $230 million annually. While methods involving nutrition, climate, and health management to mitigate pregnancy loss and calf death have been developed, one potential influence that has not been well examined is the reproductive microbiome. I hypothesized that the microbiome of the reproductive tract would influence heifer fertility and calf gut microbial development. The objectives of this dissertation were: 1) to examine differences in phenotypes related to reproductive physiology in virgin Holstein heifers based on outcome of first insemination, 2) to characterize the uterine microbiome of virgin Holstein heifers before insemination and examine associations between uterine microbial composition and fertility related phenotypes, insemination outcome, and season of breeding, and 3) to characterize the various maternal and calf fecal microbiomes and predicted metagenomes during peri-partum and post-partum periods and examine the influence of the maternal microbiome on calf gut development during the pre-weaning phase. In the first experiment, virgin Holstein heifers (n = 52) were enrolled over 12 periods, on period per month. On -3 d before insemination, heifers were weighed and the uterus was flushed. -
Microbial Community Composition During Degradation of Organic Matter
TECHNISCHE UNIVERSITÄT MÜNCHEN Lehrstuhl für Bodenökologie Microbial community composition during degradation of organic matter Stefanie Elisabeth Wallisch Vollständiger Abdruck der von der Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt der Technischen Universität München zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigten Dissertation. Vorsitzender: Univ.-Prof. Dr. A. Göttlein Prüfer der Dissertation: 1. Hon.-Prof. Dr. M. Schloter 2. Univ.-Prof. Dr. S. Scherer Die Dissertation wurde am 14.04.2015 bei der Technischen Universität München eingereicht und durch die Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt am 03.08.2015 angenommen. Table of contents List of figures .................................................................................................................... iv List of tables ..................................................................................................................... vi Abbreviations .................................................................................................................. vii List of publications and contributions .............................................................................. viii Publications in peer-reviewed journals .................................................................................... viii My contributions to the publications ....................................................................................... viii Abstract -
Diversity and Taxonomic Novelty of Actinobacteria Isolated from The
Diversity and taxonomic novelty of Actinobacteria isolated from the Atacama Desert and their potential to produce antibiotics Dissertation zur Erlangung des Doktorgrades der Mathematisch-Naturwissenschaftlichen Fakultät der Christian-Albrechts-Universität zu Kiel Vorgelegt von Alvaro S. Villalobos Kiel 2018 Referent: Prof. Dr. Johannes F. Imhoff Korreferent: Prof. Dr. Ute Hentschel Humeida Tag der mündlichen Prüfung: Zum Druck genehmigt: 03.12.2018 gez. Prof. Dr. Frank Kempken, Dekan Table of contents Summary .......................................................................................................................................... 1 Zusammenfassung ............................................................................................................................ 2 Introduction ...................................................................................................................................... 3 Geological and climatic background of Atacama Desert ............................................................. 3 Microbiology of Atacama Desert ................................................................................................. 5 Natural products from Atacama Desert ........................................................................................ 9 References .................................................................................................................................. 12 Aim of the thesis ........................................................................................................................... -
Microbiology in Shale: Alternatives for Enhanced Gas Recovery
Graduate Theses, Dissertations, and Problem Reports 2015 Microbiology in Shale: Alternatives for Enhanced Gas Recovery Yael Tarlovsky Tucker Follow this and additional works at: https://researchrepository.wvu.edu/etd Recommended Citation Tucker, Yael Tarlovsky, "Microbiology in Shale: Alternatives for Enhanced Gas Recovery" (2015). Graduate Theses, Dissertations, and Problem Reports. 6834. https://researchrepository.wvu.edu/etd/6834 This Dissertation is protected by copyright and/or related rights. It has been brought to you by the The Research Repository @ WVU with permission from the rights-holder(s). You are free to use this Dissertation in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you must obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/ or on the work itself. This Dissertation has been accepted for inclusion in WVU Graduate Theses, Dissertations, and Problem Reports collection by an authorized administrator of The Research Repository @ WVU. For more information, please contact [email protected]. Microbiology in Shale: Alternatives for Enhanced Gas Recovery Yael Tarlovsky Tucker Dissertation submitted to the Davis College of Agriculture, Natural Resources and Design at West Virginia University in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Genetics and Developmental Biology Jianbo Yao, Ph.D., Chair James Kotcon, Ph.D. -
Hermetia Illucens)
Intestinal Microbiota and Functional Characteristics of Black Soldier Fly Larvae (Hermetia Illucens) Zhineng Yuan ( [email protected] ) Sun Yat-Sen University Ying Ma Sun Yat-Sen University The school of agriculture Bingjie Tang Sun Yat-sen University School of Life Science Rouxian Zeng Sun Yat-sen University School of Life Science Qiang Zhou Sun Yat-sen University School of Life Science https://orcid.org/0000-0002-7678-0563 Original Article Keywords: Hermetia illucens, intestinal bacteria, utilization eciency, metagenomics Posted Date: February 4th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-168343/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Version of Record: A version of this preprint was published at Annals of Microbiology on March 12th, 2021. See the published version at https://doi.org/10.1186/s13213-021-01626-8. Page 1/17 Abstract Purpose: Black soldier y transforms organic waste into insect protein and fat, which makes it valuable to ecological utilization. This process is associated with intestinal microbiota. This research was developed to determine the type and functional characteristics of intestinal microbiota present in black soldier y larvae. Methods: In this research, metagenomics has been used to study black soldier y larvae gut bacteria, which involves the high abundance of the gut microbes advantage bacterium group, the impact, and physiological functions of the microbiota. Furthermore, intestinal bacteria and their related functions were investigated by bioinformatics analysis to evaluate potential the microbial strains that may be used to improve feed utilization eciency in factory farming. Result: The results showed that black soldier y larvae´ intestine contains more than 11,000 bacteria. -
Variation of the Frog Skin Microbiota Across an Environmental Gradient: Taxonomic Diversity and Potential Function
VARIATION OF THE FROG SKIN MICROBIOTA ACROSS AN ENVIRONMENTAL GRADIENT: TAXONOMIC DIVERSITY AND POTENTIAL FUNCTION Brandon J. Varela Department of Biology, Neotropical Environment Option McGill University, Montreal August, 2017 A thesis submitted to McGill University in partial fulfillment of the requirements of the degree of Master’s in Science in Biology Brandon J. Varela, 2017 1 TABLE OF CONTENTS ABSTRACT .............................................................................................................. 4 RÉSUMÉ .................................................................................................................. 5 ACKNOWLEDGEMENTS ...................................................................................... 7 CONTRIBUTIONS OF AUTHORS ......................................................................... 9 Introduction ............................................................................................................ 10 Thesis objectives ......................................................................................................................... 14 Hypothesis 1 ........................................................................................................................................ 15 Hypothesis 2 ........................................................................................................................................ 15 Hypothesis 3 .......................................................................................................................................