Pseudonocardia Parietis Sp. Nov., from the Indoor Environment
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Pseudonocardia Acaciae Sp. Nov., Isolated from Roots of Acacia Auriculiformis A
Pseudonocardia acaciae sp. nov., isolated from roots of Acacia auriculiformis A. Cunn. ex Benth. Page 1 of 2 Pseudonocardia acaciae sp. nov., isolated from roots of Acacia auriculiformis A. Cunn. ex Benth. 123 Kannika Duangmal , Arinthip Thamchaipenet , Atsuko Matsumoto and 3 Yoko Takahashi - Author Affiliations 1Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand 2Department of Genetics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand 3Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan Correspondence Kannika Duangmal [email protected] or [email protected] Abstract A novel Gram-positive-staining actinomycete designated strain GMKU095T was isolated from surface-sterilized roots of Acacia auriculiformis A. Cunn. ex Benth. (earpod wattle). The organism produced branching mycelium. The spores were non-motile and had a spiny surface. Growth of strain GMKU095T occurred at 18– 42 °C, pH 5.0–8.0 and at NaCl concentrations up to 5 %. Whole-cell hydrolysates contained arabinose and galactose as major characteristic sugars. The diagnostic diamino acid of the peptidoglycan was meso-diaminopimelic acid. The glycan moiety of the murein contained acetyl residues. The menaquinone was MK-8(H4); mycolic acids were not detected. The G+C content of the DNA was 71.6 mol%. iso- C16 : 0 was detected as the major cellular fatty acid. Comparative studies of 16S rRNA gene sequences indicated that the strain was phylogenetically related to members of the genus Pseudonocardia. The most closely related type strain is Pseudonocardia spinosispora IMSNU 50581T , which is 96.2 % similar in 16S rRNA gene sequence. -
Pseudonocardia Pini Sp. Nov., an Endophytic Actinobacterium Isolated from Roots of the Pine Tree Callitris Preissii
Pseudonocardia Pini Sp. Nov., An Endophytic Actinobacterium Isolated From Roots of the Pine Tree Callitris Preissii Onuma Kaewkla ( [email protected] ) Mahasarakham University https://orcid.org/0000-0001-7630-7074 Christopher Milton Mathew Franco Flinders University of South Australia: Flinders University Research Article Keywords: Pseudonocardia pini sp. nov., an endophytic actinobacterium Posted Date: March 16th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-274242/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 Archives of Microbiology on April 23rd, 2021. See the published version at https://doi.org/10.1007/s00203-021-02309-3. Page 1/16 Abstract A Gram positive, aerobic, actinobacterial strain with rod-shaped spores, CAP47RT, which was isolated from the surface-sterilized root of a native pine tree (Callitris preissii), South Australia is described. The major cellular fatty acid of this strain was iso-H-C16:1 and major menaquinone was MK-8(H4). The diagnostic diamino acid in the cell-wall peptidoglycan was identied as meso- diaminopimelic acid. These chemotaxonomic data conrmed the aliation of strain CAP47RT to the genus Pseudonocardia. Phylogenetic evaluation based on 16S rRNA gene sequence analysis placed this strain in the family Pseudonocardiaceae, being most closely related to Pseudonocardia xishanensis JCM 17906T (98.8%), Pseudonocardia oroxyli DSM 44984T (98.7%), Pseudonocardia thailandensis CMU-NKS-70T (98.7%), and Pseudonocardia ailaonensis DSM 44979T (97.9%). The results of the polyphasic study which contain genome comparisons of ANIb, ANIm and digital DNA-DNA hybridization revealed the differentiation of strain CAP47RT from the closest species with validated names. -
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. -
Production, Purification, and Characterization of Bioactive Metabolites Produced from Rare Actinobacteria Pseudonocardia Alni
Online - 2455-3891 Vol 9, Suppl. 3, 2016 Print - 0974-2441 Research Article PRODUCTION, PURIFICATION, AND CHARACTERIZATION OF BIOACTIVE METABOLITES PRODUCED FROM RARE ACTINOBACTERIA PSEUDONOCARDIA ALNI RABAB OMRAN1*, MOHAMMED FADHIL KADHEM2 1Department of Biology, College of Science, University of Babylon, Babel, Al-Hillah, Iraq. 2Department of Pharmacology, Ibn Hayyan College, Karbala, Iraq. Email: [email protected], [email protected] Received: 30 August 2016, Revised and Accepted: 12 September 2016 ABSTRACT Objectives: Pseudonocardia alni exhibits antimicrobial activity against tested pathogenic Staphylococcus aureus, Microsporum canis, and Trichophyton mentagrophyte. The present paper aimed to optimize various cultural conditions for antimicrobial metabolite production, purification, and characterization of the active substance. Methods: The effects of various parameters such as culture media, carbon and nitrogen sources, phosphate concentration, pH, temperature, incubation period, and agitation rate on bioactive metabolite production were studied using a flask scale with varying single parameter. The active substances were purified by adsorption chromatography using Silica gel column and Sephadex LH 20 column, and the physical, chemical, and biological properties were characterized. Results: The metabolite production by P. alni was greatly influenced by various cultural conditions. It produced high levels of the antimicrobial substance in International Streptomyces project-2 broth compared with that in potato dextrose broth. The optimum parameters for antimicrobial production from the actinobacterium occurred in the production medium consisting of glucose (1%) and tryptone (1%), 0.001 M of K2HPO4 and the bioactive production. The purified active substance had relative factor Rf=0.53 in the mobile phase of a thin layer chromatography system and 0.05M glycine at initial pH 8.5 and incubated at 30°C for 4 d in stand incubator. -
Genomic and Phylogenomic Insights Into the Family Streptomycetaceae Lead
1 Supplementary Material 2 Genomic and phylogenomic insights into the family Streptomycetaceae lead 3 to proposal of Charcoactinosporaceae fam. nov. and 8 novel genera with 4 emended descriptions of Streptomyces calvus 5 Munusamy Madhaiyan1, †, *, Venkatakrishnan Sivaraj Saravanan2, †, Wah-Seng See-Too3, † 6 1Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 7 Singapore 117604; 2Department of Microbiology, Indira Gandhi College of Arts and Science, 8 Kathirkamam 605009, Pondicherry, India; 3Division of Genetics and Molecular Biology, 9 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 10 Malaysia 1 11 Table S3. List of the core genes in the genome used for phylogenomic analysis. NCBI Protein Accession Gene WP_074993204.1 NUDIX hydrolase WP_070028582.1 YggS family pyridoxal phosphate-dependent enzyme WP_074992763.1 ParB/RepB/Spo0J family partition protein WP_070022023.1 lipoyl(octanoyl) transferase LipB WP_070025151.1 FABP family protein WP_070027039.1 heat-inducible transcriptional repressor HrcA WP_074992865.1 folate-binding protein YgfZ WP_074992658.1 recombination protein RecR WP_074991826.1 HIT domain-containing protein WP_070024163.1 adenylosuccinate synthase WP_009190566.1 anti-sigma regulatory factor WP_071828679.1 preprotein translocase subunit SecG WP_070026304.1 50S ribosomal protein L13 WP_009190144.1 30S ribosomal protein S5 WP_014674378.1 30S ribosomal protein S8 WP_070026314.1 50S ribosomal protein L5 WP_009300593.1 30S ribosomal protein S13 WP_003998809.1 -
Generalized Antifungal Activity and 454-Screening of Pseudonocardia and Amycolatopsis Bacteria in Nests of Fungus-Growing Ants
Generalized antifungal activity and 454-screening SEE COMMENTARY of Pseudonocardia and Amycolatopsis bacteria in nests of fungus-growing ants Ruchira Sena,1, Heather D. Ishaka, Dora Estradaa, Scot E. Dowdb, Eunki Honga, and Ulrich G. Muellera,1 aSection of Integrative Biology, University of Texas, Austin, TX 78712; and bMedical Biofilm Research Institute, 4321 Marsha Sharp Freeway, Lubbock, TX 79407 Edited by Raghavendra Gadagkar, Indian Institute of Science, Bangalore, India, and approved August 14, 2009 (received for review May 1, 2009) In many host-microbe mutualisms, hosts use beneficial metabolites origin (12–14). Many of the ant-associated Pseudonocardia species supplied by microbial symbionts. Fungus-growing (attine) ants are show antibiotic activity in vitro against Escovopsis (13–15). A thought to form such a mutualism with Pseudonocardia bacteria to diversity of actinomycete bacteria including Pseudonocardia also derive antibiotics that specifically suppress the coevolving pathogen occur in the ant gardens, in the soil surrounding attine nests, and Escovopsis, which infects the ants’ fungal gardens and reduces possibly in the substrate used by the ants for fungiculture (16, 17). growth. Here we test 4 key assumptions of this Pseudonocardia- The prevailing view of attine actinomycete-Escovopsis antago- Escovopsis coevolution model. Culture-dependent and culture- nism is a coevolutionary arms race between antibiotic-producing independent (tag-encoded 454-pyrosequencing) surveys reveal that Pseudonocardia and Escovopsis parasites (5, 18–22). Attine ants are several Pseudonocardia species and occasionally Amycolatopsis (a thought to use their integumental actinomycetes to specifically close relative of Pseudonocardia) co-occur on workers from a single combat Escovopsis parasites, which fail to evolve effective resistance nest, contradicting the assumption of a single pseudonocardiaceous against Pseudonocardia because of some unknown disadvantage strain per nest. -
Induction of Secondary Metabolism Across Actinobacterial Genera
Induction of secondary metabolism across actinobacterial genera A thesis submitted for the award Doctor of Philosophy at Flinders University of South Australia Rio Risandiansyah Department of Medical Biotechnology Faculty of Medicine, Nursing and Health Sciences Flinders University 2016 TABLE OF CONTENTS TABLE OF CONTENTS ............................................................................................ ii TABLE OF FIGURES ............................................................................................. viii LIST OF TABLES .................................................................................................... xii SUMMARY ......................................................................................................... xiii DECLARATION ...................................................................................................... xv ACKNOWLEDGEMENTS ...................................................................................... xvi Chapter 1. Literature review ................................................................................. 1 1.1 Actinobacteria as a source of novel bioactive compounds ......................... 1 1.1.1 Natural product discovery from actinobacteria .................................... 1 1.1.2 The need for new antibiotics ............................................................... 3 1.1.3 Secondary metabolite biosynthetic pathways in actinobacteria ........... 4 1.1.4 Streptomyces genetic potential: cryptic/silent genes .......................... -
Transition from Unclassified Ktedonobacterales to Actinobacteria During Amorphous Silica Precipitation in a Quartzite Cave Envir
www.nature.com/scientificreports OPEN Transition from unclassifed Ktedonobacterales to Actinobacteria during amorphous silica precipitation in a quartzite cave environment D. Ghezzi1,2, F. Sauro3,4,5, A. Columbu3, C. Carbone6, P.‑Y. Hong7, F. Vergara4,5, J. De Waele3 & M. Cappelletti1* The orthoquartzite Imawarì Yeuta cave hosts exceptional silica speleothems and represents a unique model system to study the geomicrobiology associated to silica amorphization processes under aphotic and stable physical–chemical conditions. In this study, three consecutive evolution steps in the formation of a peculiar blackish coralloid silica speleothem were studied using a combination of morphological, mineralogical/elemental and microbiological analyses. Microbial communities were characterized using Illumina sequencing of 16S rRNA gene and clone library analysis of carbon monoxide dehydrogenase (coxL) and hydrogenase (hypD) genes involved in atmospheric trace gases utilization. The frst stage of the silica amorphization process was dominated by members of a still undescribed microbial lineage belonging to the Ktedonobacterales order, probably involved in the pioneering colonization of quartzitic environments. Actinobacteria of the Pseudonocardiaceae and Acidothermaceae families dominated the intermediate amorphous silica speleothem and the fnal coralloid silica speleothem, respectively. The atmospheric trace gases oxidizers mostly corresponded to the main bacterial taxa present in each speleothem stage. These results provide novel understanding of the microbial community structure accompanying amorphization processes and of coxL and hypD gene expression possibly driving atmospheric trace gases metabolism in dark oligotrophic caves. Silicon is one of the most abundant elements in the Earth’s crust and can be broadly found in the form of silicates, aluminosilicates and silicon dioxide (e.g., quartz, amorphous silica). -
Marine Rare Actinomycetes: a Promising Source of Structurally Diverse and Unique Novel Natural Products
Review Marine Rare Actinomycetes: A Promising Source of Structurally Diverse and Unique Novel Natural Products Ramesh Subramani 1 and Detmer Sipkema 2,* 1 School of Biological and Chemical Sciences, Faculty of Science, Technology & Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Republic of Fiji; [email protected] 2 Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands * Correspondence: [email protected]; Tel.: +31-317-483113 Received: 7 March 2019; Accepted: 23 April 2019; Published: 26 April 2019 Abstract: Rare actinomycetes are prolific in the marine environment; however, knowledge about their diversity, distribution and biochemistry is limited. Marine rare actinomycetes represent a rather untapped source of chemically diverse secondary metabolites and novel bioactive compounds. In this review, we aim to summarize the present knowledge on the isolation, diversity, distribution and natural product discovery of marine rare actinomycetes reported from mid-2013 to 2017. A total of 97 new species, representing 9 novel genera and belonging to 27 families of marine rare actinomycetes have been reported, with the highest numbers of novel isolates from the families Pseudonocardiaceae, Demequinaceae, Micromonosporaceae and Nocardioidaceae. Additionally, this study reviewed 167 new bioactive compounds produced by 58 different rare actinomycete species representing 24 genera. Most of the compounds produced by the marine rare actinomycetes present antibacterial, antifungal, antiparasitic, anticancer or antimalarial activities. The highest numbers of natural products were derived from the genera Nocardiopsis, Micromonospora, Salinispora and Pseudonocardia. Members of the genus Micromonospora were revealed to be the richest source of chemically diverse and unique bioactive natural products. -
1 Supplementary Material a Major Clade of Prokaryotes with Ancient
Supplementary Material A major clade of prokaryotes with ancient adaptations to life on land Fabia U. Battistuzzi and S. Blair Hedges Data assembly and phylogenetic analyses Protein data set: Amino acid sequences of 25 protein-coding genes (“proteins”) were concatenated in an alignment of 18,586 amino acid sites and 283 species. These proteins included: 15 ribosomal proteins (RPL1, 2, 3, 5, 6, 11, 13, 16; RPS2, 3, 4, 5, 7, 9, 11), four genes (RNA polymerase alpha, beta, and gamma subunits, Transcription antitermination factor NusG) from the functional category of Transcription, three proteins (Elongation factor G, Elongation factor Tu, Translation initiation factor IF2) of the Translation, Ribosomal Structure and Biogenesis functional category, one protein (DNA polymerase III, beta subunit) of the DNA Replication, Recombination and repair category, one protein (Preprotein translocase SecY) of the Cell Motility and Secretion category, and one protein (O-sialoglycoprotein endopeptidase) of the Posttranslational Modification, Protein Turnover, Chaperones category, as annotated in the Cluster of Orthologous Groups (COG) (Tatusov et al. 2001). After removal of multiple strains of the same species, GBlocks 0.91b (Castresana 2000) was applied to each protein in the concatenation to delete poorly aligned sites (i.e., sites with gaps in more than 50% of the species and conserved in less than 50% of the species) with the following parameters: minimum number of sequences for a conserved position: 110, minimum number of sequences for a flank position: 110, maximum number of contiguous non-conserved positions: 32000, allowed gap positions: with half. The signal-to-noise ratio was determined by altering the “minimum length of a block” parameter. -
Inter-Domain Horizontal Gene Transfer of Nickel-Binding Superoxide Dismutase 2 Kevin M
bioRxiv preprint doi: https://doi.org/10.1101/2021.01.12.426412; this version posted January 13, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 Inter-domain Horizontal Gene Transfer of Nickel-binding Superoxide Dismutase 2 Kevin M. Sutherland1,*, Lewis M. Ward1, Chloé-Rose Colombero1, David T. Johnston1 3 4 1Department of Earth and Planetary Science, Harvard University, Cambridge, MA 02138 5 *Correspondence to KMS: [email protected] 6 7 Abstract 8 The ability of aerobic microorganisms to regulate internal and external concentrations of the 9 reactive oxygen species (ROS) superoxide directly influences the health and viability of cells. 10 Superoxide dismutases (SODs) are the primary regulatory enzymes that are used by 11 microorganisms to degrade superoxide. SOD is not one, but three separate, non-homologous 12 enzymes that perform the same function. Thus, the evolutionary history of genes encoding for 13 different SOD enzymes is one of convergent evolution, which reflects environmental selection 14 brought about by an oxygenated atmosphere, changes in metal availability, and opportunistic 15 horizontal gene transfer (HGT). In this study we examine the phylogenetic history of the protein 16 sequence encoding for the nickel-binding metalloform of the SOD enzyme (SodN). A comparison 17 of organismal and SodN protein phylogenetic trees reveals several instances of HGT, including 18 multiple inter-domain transfers of the sodN gene from the bacterial domain to the archaeal domain. -
Complete Genome Sequence of Jiangella Gansuensis Strain YIM 002T (DSM 44835T), the Type Species of the Genus Jiangella and Source of New Antibiotic Compounds
UC Davis UC Davis Previously Published Works Title Complete genome sequence of Jiangella gansuensis strain YIM 002T (DSM 44835T), the type species of the genus Jiangella and source of new antibiotic compounds. Permalink https://escholarship.org/uc/item/34s6p01n Journal Standards in genomic sciences, 12(1) ISSN 1944-3277 Authors Jiao, Jian-Yu Carro, Lorena Liu, Lan et al. Publication Date 2017 DOI 10.1186/s40793-017-0226-6 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Jiao et al. Standards in Genomic Sciences (2017) 12:21 DOI 10.1186/s40793-017-0226-6 SHORTGENOMEREPORT Open Access Complete genome sequence of Jiangella gansuensis strain YIM 002T (DSM 44835T), the type species of the genus Jiangella and source of new antibiotic compounds Jian-Yu Jiao1, Lorena Carro2, Lan Liu1, Xiao-Yang Gao3, Xiao-Tong Zhang1, Wael N. Hozzein4,12, Alla Lapidus5,6, Marcel Huntemann7, T. B. K. Reddy7, Neha Varghese7, Michalis Hadjithomas7, Natalia N. Ivanova7, Markus Göker8, Manoj Pillay9, Jonathan A. Eisen10, Tanja Woyke7, Hans-Peter Klenk2,8*, Nikos C. Kyrpides7,11 and Wen-Jun Li1,13* Abstract Jiangella gansuensis strain YIM 002T is the type strain of the type species of the genus Jiangella, which is at the present time composed of five species, and was isolated from desert soil sample in Gansu Province (China). The five strains of this genus are clustered in a monophyletic group when closer actinobacterial genera are used to infer a 16S rRNA gene sequence phylogeny. The study of this genome is part of the Genomic Encyclopedia of Bacteria and Archaea project, and here we describe the complete genome sequence and annotation of this taxon.