Genome Sequence of the Lotus Spp
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Bacterial Epibiotic Communities of Ubiquitous and Abundant Marine Diatoms Are Distinct in Short- and Long-Term Associations
fmicb-09-02879 December 1, 2018 Time: 14:0 # 1 ORIGINAL RESEARCH published: 04 December 2018 doi: 10.3389/fmicb.2018.02879 Bacterial Epibiotic Communities of Ubiquitous and Abundant Marine Diatoms Are Distinct in Short- and Long-Term Associations Klervi Crenn, Delphine Duffieux and Christian Jeanthon* CNRS, Sorbonne Université, Station Biologique de Roscoff, Adaptation et Diversité en Milieu Marin, Roscoff, France Interactions between phytoplankton and bacteria play a central role in mediating biogeochemical cycling and food web structure in the ocean. The cosmopolitan diatoms Thalassiosira and Chaetoceros often dominate phytoplankton communities in marine systems. Past studies of diatom-bacterial associations have employed community- level methods and culture-based or natural diatom populations. Although bacterial assemblages attached to individual diatoms represents tight associations little is known on their makeup or interactions. Here, we examined the epibiotic bacteria of 436 Thalassiosira and 329 Chaetoceros single cells isolated from natural samples and Edited by: collection cultures, regarded here as short- and long-term associations, respectively. Matthias Wietz, Epibiotic microbiota of single diatom hosts was analyzed by cultivation and by cloning- Alfred Wegener Institut, Germany sequencing of 16S rRNA genes obtained from whole-genome amplification products. Reviewed by: The prevalence of epibiotic bacteria was higher in cultures and dependent of the host Lydia Jeanne Baker, Cornell University, United States species. Culture approaches demonstrated that both diatoms carry distinct bacterial Bryndan Paige Durham, communities in short- and long-term associations. Bacterial epibonts, commonly University of Washington, United States associated with phytoplankton, were repeatedly isolated from cells of diatom collection *Correspondence: cultures but were not recovered from environmental cells. -
Genome Sequence of the Lotus Spp. Microsymbiont Mesorhizobium Loti
Kelly et al. Standards in Genomic Sciences 2014, 9:7 http://www.standardsingenomics.com/content/9/1/7 SHORT GENOME REPORT Open Access Genome sequence of the Lotus spp. microsymbiont Mesorhizobium loti strain NZP2037 Simon Kelly1, John Sullivan1, Clive Ronson1, Rui Tian2, Lambert Bräu3, Karen Davenport4, Hajnalka Daligault4, Tracy Erkkila4, Lynne Goodwin4, Wei Gu4, Christine Munk4, Hazuki Teshima4, Yan Xu4, Patrick Chain4, Tanja Woyke5, Konstantinos Liolios5, Amrita Pati5, Konstantinos Mavromatis6, Victor Markowitz6, Natalia Ivanova5, Nikos Kyrpides5,7 and Wayne Reeve2* Abstract Mesorhizobium loti strain NZP2037 was isolated in 1961 in Palmerston North, New Zealand from a Lotus divaricatus root nodule. Compared to most other M. loti strains, it has a broad host range and is one of very few M. loti strains able to form effective nodules on the agriculturally important legume Lotus pedunculatus. NZP2037 is an aerobic, Gram negative, non-spore-forming rod. This report reveals that the genome of M. loti strain NZP2037 does not harbor any plasmids and contains a single scaffold of size 7,462,792 bp which encodes 7,318 protein-coding genes and 70 RNA-only encoding genes. This rhizobial genome is one of 100 sequenced as part of the DOE Joint Genome Institute 2010 Genomic Encyclopedia for Bacteria and Archaea-Root Nodule Bacteria (GEBA-RNB) project. Keywords: Root-nodule bacteria, Nitrogen fixation, Symbiosis, Alphaproteobacteria Introduction whether the polysaccharide is necessary for nodulation Mesorhizobium loti strain NZP2037 (ICMP1326) was of L. pedunculatus has not been established. isolated in 1961 from a root nodule off a Lotus divarica- Nodulation and nitrogen fixation genes in Mesorhizo- tus plant growing near Palmerston North airport, New bium loti strains are encoded on the chromosome on Zealand [1]. -
Reclassification of Agrobacterium Ferrugineum LMG 128 As Hoeflea
International Journal of Systematic and Evolutionary Microbiology (2005), 55, 1163–1166 DOI 10.1099/ijs.0.63291-0 Reclassification of Agrobacterium ferrugineum LMG 128 as Hoeflea marina gen. nov., sp. nov. Alvaro Peix,1 Rau´l Rivas,2 Martha E. Trujillo,2 Marc Vancanneyt,3 Encarna Vela´zquez2 and Anne Willems3 Correspondence 1Departamento de Produccio´n Vegetal, Instituto de Recursos Naturales y Agrobiologı´a, Encarna Vela´zquez IRNA-CSIC, Spain [email protected] 2Departamento de Microbiologı´a y Gene´tica, Lab. 209, Edificio Departamental, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain 3Laboratory of Microbiology, Dept Biochemistry, Physiology and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium Members of the species Agrobacterium ferrugineum were isolated from marine environments. The type strain of this species (=LMG 22047T=ATCC 25652T) was recently reclassified in the new genus Pseudorhodobacter, in the order ‘Rhodobacterales’ of the class ‘Alphaproteobacteria’. Strain LMG 128 (=ATCC 25654) was also initially classified as belonging to the species Agrobacterium ferrugineum; however, the nearly complete 16S rRNA gene sequence of this strain indicated that it does not belong within the genus Agrobacterium or within the genus Pseudorhodobacter. The closest related organism, with 95?5 % 16S rRNA gene similarity, was Aquamicrobium defluvii from the family ‘Phyllobacteriaceae’ in the order ‘Rhizobiales’. The remaining genera from this order had 16S rRNA gene sequence similarities that were lower than 95?1 % with respect to strain LMG 128. These phylogenetic distances suggested that strain LMG 128 belonged to a different genus. The major fatty acid present in strain LMG 128 was mono-unsaturated straight chain 18 : 1v7c. -
Revised Taxonomy of the Family Rhizobiaceae, and Phylogeny of Mesorhizobia Nodulating Glycyrrhiza Spp
Division of Microbiology and Biotechnology Department of Food and Environmental Sciences University of Helsinki Finland Revised taxonomy of the family Rhizobiaceae, and phylogeny of mesorhizobia nodulating Glycyrrhiza spp. Seyed Abdollah Mousavi Academic Dissertation To be presented, with the permission of the Faculty of Agriculture and Forestry of the University of Helsinki, for public examination in lecture hall 3, Viikki building B, Latokartanonkaari 7, on the 20th of May 2016, at 12 o’clock noon. Helsinki 2016 Supervisor: Professor Kristina Lindström Department of Environmental Sciences University of Helsinki, Finland Pre-examiners: Professor Jaakko Hyvönen Department of Biosciences University of Helsinki, Finland Associate Professor Chang Fu Tian State Key Laboratory of Agrobiotechnology College of Biological Sciences China Agricultural University, China Opponent: Professor J. Peter W. Young Department of Biology University of York, England Cover photo by Kristina Lindström Dissertationes Schola Doctoralis Scientiae Circumiectalis, Alimentariae, Biologicae ISSN 2342-5423 (print) ISSN 2342-5431 (online) ISBN 978-951-51-2111-0 (paperback) ISBN 978-951-51-2112-7 (PDF) Electronic version available at http://ethesis.helsinki.fi/ Unigrafia Helsinki 2016 2 ABSTRACT Studies of the taxonomy of bacteria were initiated in the last quarter of the 19th century when bacteria were classified in six genera placed in four tribes based on their morphological appearance. Since then the taxonomy of bacteria has been revolutionized several times. At present, 30 phyla belong to the domain “Bacteria”, which includes over 9600 species. Unlike many eukaryotes, bacteria lack complex morphological characters and practically phylogenetically informative fossils. It is partly due to these reasons that bacterial taxonomy is complicated. -
Supplementary Information for Microbial Electrochemical Systems Outperform Fixed-Bed Biofilters for Cleaning-Up Urban Wastewater
Electronic Supplementary Material (ESI) for Environmental Science: Water Research & Technology. This journal is © The Royal Society of Chemistry 2016 Supplementary information for Microbial Electrochemical Systems outperform fixed-bed biofilters for cleaning-up urban wastewater AUTHORS: Arantxa Aguirre-Sierraa, Tristano Bacchetti De Gregorisb, Antonio Berná, Juan José Salasc, Carlos Aragónc, Abraham Esteve-Núñezab* Fig.1S Total nitrogen (A), ammonia (B) and nitrate (C) influent and effluent average values of the coke and the gravel biofilters. Error bars represent 95% confidence interval. Fig. 2S Influent and effluent COD (A) and BOD5 (B) average values of the hybrid biofilter and the hybrid polarized biofilter. Error bars represent 95% confidence interval. Fig. 3S Redox potential measured in the coke and the gravel biofilters Fig. 4S Rarefaction curves calculated for each sample based on the OTU computations. Fig. 5S Correspondence analysis biplot of classes’ distribution from pyrosequencing analysis. Fig. 6S. Relative abundance of classes of the category ‘other’ at class level. Table 1S Influent pre-treated wastewater and effluents characteristics. Averages ± SD HRT (d) 4.0 3.4 1.7 0.8 0.5 Influent COD (mg L-1) 246 ± 114 330 ± 107 457 ± 92 318 ± 143 393 ± 101 -1 BOD5 (mg L ) 136 ± 86 235 ± 36 268 ± 81 176 ± 127 213 ± 112 TN (mg L-1) 45.0 ± 17.4 60.6 ± 7.5 57.7 ± 3.9 43.7 ± 16.5 54.8 ± 10.1 -1 NH4-N (mg L ) 32.7 ± 18.7 51.6 ± 6.5 49.0 ± 2.3 36.6 ± 15.9 47.0 ± 8.8 -1 NO3-N (mg L ) 2.3 ± 3.6 1.0 ± 1.6 0.8 ± 0.6 1.5 ± 2.0 0.9 ± 0.6 TP (mg -
Specificity in Legume-Rhizobia Symbioses
International Journal of Molecular Sciences Review Specificity in Legume-Rhizobia Symbioses Mitchell Andrews * and Morag E. Andrews Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 84, Lincoln 7647, New Zealand; [email protected] * Correspondence: [email protected]; Tel.: +64-3-423-0692 Academic Editors: Peter M. Gresshoff and Brett Ferguson Received: 12 February 2017; Accepted: 21 March 2017; Published: 26 March 2017 Abstract: Most species in the Leguminosae (legume family) can fix atmospheric nitrogen (N2) via symbiotic bacteria (rhizobia) in root nodules. Here, the literature on legume-rhizobia symbioses in field soils was reviewed and genotypically characterised rhizobia related to the taxonomy of the legumes from which they were isolated. The Leguminosae was divided into three sub-families, the Caesalpinioideae, Mimosoideae and Papilionoideae. Bradyrhizobium spp. were the exclusive rhizobial symbionts of species in the Caesalpinioideae, but data are limited. Generally, a range of rhizobia genera nodulated legume species across the two Mimosoideae tribes Ingeae and Mimoseae, but Mimosa spp. show specificity towards Burkholderia in central and southern Brazil, Rhizobium/Ensifer in central Mexico and Cupriavidus in southern Uruguay. These specific symbioses are likely to be at least in part related to the relative occurrence of the potential symbionts in soils of the different regions. Generally, Papilionoideae species were promiscuous in relation to rhizobial symbionts, but specificity for rhizobial genus appears to hold at the tribe level for the Fabeae (Rhizobium), the genus level for Cytisus (Bradyrhizobium), Lupinus (Bradyrhizobium) and the New Zealand native Sophora spp. (Mesorhizobium) and species level for Cicer arietinum (Mesorhizobium), Listia bainesii (Methylobacterium) and Listia angolensis (Microvirga). -
The Gut Microbiome of the Sea Urchin, Lytechinus Variegatus, from Its Natural Habitat Demonstrates Selective Attributes of Micro
FEMS Microbiology Ecology, 92, 2016, fiw146 doi: 10.1093/femsec/fiw146 Advance Access Publication Date: 1 July 2016 Research Article RESEARCH ARTICLE The gut microbiome of the sea urchin, Lytechinus variegatus, from its natural habitat demonstrates selective attributes of microbial taxa and predictive metabolic profiles Joseph A. Hakim1,†, Hyunmin Koo1,†, Ranjit Kumar2, Elliot J. Lefkowitz2,3, Casey D. Morrow4, Mickie L. Powell1, Stephen A. Watts1,∗ and Asim K. Bej1,∗ 1Department of Biology, University of Alabama at Birmingham, 1300 University Blvd, Birmingham, AL 35294, USA, 2Center for Clinical and Translational Sciences, University of Alabama at Birmingham, Birmingham, AL 35294, USA, 3Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA and 4Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, 1918 University Blvd., Birmingham, AL 35294, USA ∗Corresponding authors: Department of Biology, University of Alabama at Birmingham, 1300 University Blvd, CH464, Birmingham, AL 35294-1170, USA. Tel: +1-(205)-934-8308; Fax: +1-(205)-975-6097; E-mail: [email protected]; [email protected] †These authors contributed equally to this work. One sentence summary: This study describes the distribution of microbiota, and their predicted functional attributes, in the gut ecosystem of sea urchin, Lytechinus variegatus, from its natural habitat of Gulf of Mexico. Editor: Julian Marchesi ABSTRACT In this paper, we describe the microbial composition and their predictive metabolic profile in the sea urchin Lytechinus variegatus gut ecosystem along with samples from its habitat by using NextGen amplicon sequencing and downstream bioinformatics analyses. The microbial communities of the gut tissue revealed a near-exclusive abundance of Campylobacteraceae, whereas the pharynx tissue consisted of Tenericutes, followed by Gamma-, Alpha- and Epsilonproteobacteria at approximately equal capacities. -
Mesorhizobium Ciceri LMS-1 Expressing an Exogenous
Letters in Applied Microbiology ISSN 0266-8254 ORIGINAL ARTICLE Mesorhizobium ciceri LMS-1 expressing an exogenous 1-aminocyclopropane-1-carboxylate (ACC) deaminase increases its nodulation abilities and chickpea plant resistance to soil constraints F.X. Nascimento1, C. Brı´gido1, B.R. Glick2, S. Oliveira1 and L. Alho1 1 Laborato´ rio de Microbiologia do Solo, I.C.A.A.M., Instituto de Cieˆ ncias Agra´ rias e Ambientais Mediterraˆ nicas, Universidade de E´ vora, E´ vora, Portugal 2 Department of Biology, University of Waterloo, Waterloo, ON, Canada Keywords Abstract 1-aminocyclopropane-1-carboxylate deaminase, acdS, chickpea, Mesorhizobium, Aims: Our goal was to understand the symbiotic behaviour of a Mesorhizobium root rot, soil. strain expressing an exogenous 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which was used as an inoculant of chickpea (Cicer arietinum) plants Correspondence growing in soil. Luı´s Alho, Instituto de Cieˆ ncias Agra´ rias e Methods and Results: Mesorhizobium ciceri LMS-1 (pRKACC) was tested for Ambientais Mediterraˆ nicas, Universidade de its plant growth promotion abilities on two chickpea cultivars (ELMO and E´ vora, Apartado 94, 7002-554 E´ vora, Portugal. E-mail: [email protected] CHK3226) growing in nonsterilized soil that displayed biotic and abiotic con- straints to plant growth. When compared to its wild-type form, the M. ciceri 2012 ⁄ 0247: received 8 February 2012, LMS-1 (pRKACC) strain showed an increased nodulation performance of c. revised 27 March 2012 and accepted 29 125 and 180% and increased nodule weight of c. 45 and 147% in chickpea cul- March 2012 tivars ELMO and CHK3226, respectively. Mesorhizobium ciceri LMS-1 (pRKACC) was also able to augment the total biomass of both chickpea plant doi:10.1111/j.1472-765X.2012.03251.x cultivars by c. -
Characterization of Bacterial Communities Associated
www.nature.com/scientificreports OPEN Characterization of bacterial communities associated with blood‑fed and starved tropical bed bugs, Cimex hemipterus (F.) (Hemiptera): a high throughput metabarcoding analysis Li Lim & Abdul Hafz Ab Majid* With the development of new metagenomic techniques, the microbial community structure of common bed bugs, Cimex lectularius, is well‑studied, while information regarding the constituents of the bacterial communities associated with tropical bed bugs, Cimex hemipterus, is lacking. In this study, the bacteria communities in the blood‑fed and starved tropical bed bugs were analysed and characterized by amplifying the v3‑v4 hypervariable region of the 16S rRNA gene region, followed by MiSeq Illumina sequencing. Across all samples, Proteobacteria made up more than 99% of the microbial community. An alpha‑proteobacterium Wolbachia and gamma‑proteobacterium, including Dickeya chrysanthemi and Pseudomonas, were the dominant OTUs at the genus level. Although the dominant OTUs of bacterial communities of blood‑fed and starved bed bugs were the same, bacterial genera present in lower numbers were varied. The bacteria load in starved bed bugs was also higher than blood‑fed bed bugs. Cimex hemipterus Fabricus (Hemiptera), also known as tropical bed bugs, is an obligate blood-feeding insect throughout their entire developmental cycle, has made a recent resurgence probably due to increased worldwide travel, climate change, and resistance to insecticides1–3. Distribution of tropical bed bugs is inclined to tropical regions, and infestation usually occurs in human dwellings such as dormitories and hotels 1,2. Bed bugs are a nuisance pest to humans as people that are bitten by this insect may experience allergic reactions, iron defciency, and secondary bacterial infection from bite sores4,5. -
Functional Genomics Approaches to Studying Symbioses Between Legumes and Nitrogen-Fixing Rhizobia
Review Functional Genomics Approaches to Studying Symbioses between Legumes and Nitrogen-Fixing Rhizobia Martina Lardi and Gabriella Pessi * ID Department of Plant and Microbial Biology, University of Zurich, CH-8057 Zurich, Switzerland; [email protected] * Correspondence: [email protected]; Tel.: +41-44-635-2904 Received: 9 April 2018; Accepted: 16 May 2018; Published: 18 May 2018 Abstract: Biological nitrogen fixation gives legumes a pronounced growth advantage in nitrogen- deprived soils and is of considerable ecological and economic interest. In exchange for reduced atmospheric nitrogen, typically given to the plant in the form of amides or ureides, the legume provides nitrogen-fixing rhizobia with nutrients and highly specialised root structures called nodules. To elucidate the molecular basis underlying physiological adaptations on a genome-wide scale, functional genomics approaches, such as transcriptomics, proteomics, and metabolomics, have been used. This review presents an overview of the different functional genomics approaches that have been performed on rhizobial symbiosis, with a focus on studies investigating the molecular mechanisms used by the bacterial partner to interact with the legume. While rhizobia belonging to the alpha-proteobacterial group (alpha-rhizobia) have been well studied, few studies to date have investigated this process in beta-proteobacteria (beta-rhizobia). Keywords: alpha-rhizobia; beta-rhizobia; symbiosis; transcriptomics; proteomics; metabolomics; flavonoids; root exudates; root nodule 1. Introduction Nitrogen fixation in agricultural systems is of enormous agricultural importance, as it increases in situ the fixed nitrogen content of soil and can replace expensive and harmful chemical fertilizers [1]. For over a hundred years, all of the described symbiotic relationships between legumes and nitrogen-fixing rhizobia were confined to the alpha-proteobacteria (alpha-rhizobia) group, which includes Bradyrhizobium, Mesorhizobium, Methylobacterium, Rhizobium, and Sinorhizobium [2]. -
Algae-Associated Bacteria in Photobioreactors
Algae-associated bacteria in photobioreactors Jie Lian 2020 Algae-associated bacteria in photobioreactors Invitation You are cordially invited to Algae-associated bacteria in photobioreactors Jie Lian 2020 Algae-associated bacteria in photobioreactors Algae-associated bacteria Jie Lian 2020 Algae-associated bacteria in photobioreactors attend the public defence in photobioreactors of my PhD thesis entitled: Algae-associated bacteria Algae-associated bacteria in photobioreactors in photobioreactors Thursday 2 July 2020 at 11 a.m. in the Aula of Wageningen University, General Foulkesweg 1a, Wageningen Jie Lian [email protected] Paranymphs: Taojun Wang [email protected] Patrick Schimmel Jie Lian [email protected] Jie Lian Algae-associated bacteria in photobioreactors Jie Lian Thesis committee Promotors Prof. Dr Hauke Smidt Personal chair, Laboratory of Microbiology Wageningen University & Research Prof. Dr Rene Wijffels Professor of Bioprocess Engineering Wageningen University & Research Co-promotor Dr Detmer Sipkema Associate professor, Laboratory of Microbiology Wageningen University & Research Other members Prof. Dr Eddy Smid, Wageningen University & Research Dr Dedmer van de Waal, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen Dr Alette Langenhoff, Wageningen University & Research Dr David Green, The Scottish Association for Marine Science (SAMS), Oban, UK This research was conducted under the auspices of the Graduate School VLAG (Advanced studies in Food Technology, Agrobiotechnology, Nutrition, and Health Sciences) Algae-associated bacteria in photobioreactors Jie Lian Thesis submitted in fulfilment of the requirement for the degree of doctor at Wageningen University by the authority of the Rector Magnificus, Prof. Dr A.P.J. Mol, in the presence of the Thesis Committee appointed by the Academic Board to be defended in public on Thursday 2 July 2020 at 11 a.m. -
Research Collection
Research Collection Doctoral Thesis Development and application of molecular tools to investigate microbial alkaline phosphatase genes in soil Author(s): Ragot, Sabine A. Publication Date: 2016 Permanent Link: https://doi.org/10.3929/ethz-a-010630685 Rights / License: In Copyright - Non-Commercial Use Permitted This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library DISS. ETH NO.23284 DEVELOPMENT AND APPLICATION OF MOLECULAR TOOLS TO INVESTIGATE MICROBIAL ALKALINE PHOSPHATASE GENES IN SOIL A thesis submitted to attain the degree of DOCTOR OF SCIENCES of ETH ZURICH (Dr. sc. ETH Zurich) presented by SABINE ANNE RAGOT Master of Science UZH in Biology born on 25.02.1987 citizen of Fribourg, FR accepted on the recommendation of Prof. Dr. Emmanuel Frossard, examiner PD Dr. Else Katrin Bünemann-König, co-examiner Prof. Dr. Michael Kertesz, co-examiner Dr. Claude Plassard, co-examiner 2016 Sabine Anne Ragot: Development and application of molecular tools to investigate microbial alkaline phosphatase genes in soil, c 2016 ⃝ ABSTRACT Phosphatase enzymes play an important role in soil phosphorus cycling by hydrolyzing organic phosphorus to orthophosphate, which can be taken up by plants and microorgan- isms. PhoD and PhoX alkaline phosphatases and AcpA acid phosphatase are produced by microorganisms in response to phosphorus limitation in the environment. In this thesis, the current knowledge of the prevalence of phoD and phoX in the environment and of their taxonomic distribution was assessed, and new molecular tools were developed to target the phoD and phoX alkaline phosphatase genes in soil microorganisms.