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1.
Plant Dis ; : PDIS05201052A, 2020 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-33200956

RESUMO

Sphingomonas carotinifaciens strain L9-754T (DSM 27347) is a gram-negative, chemoheterotrophic, and rod-shaped endophyte isolated from the stem tissues of Jatropha curcas L. This strain has putative in vitro antagonistic ability against the plant pathogenic fungus Magnaporthe grisea. A draft genome of L9-754T was obtained using the PacBio SMRT cell platform. By analyzing the genome of strain L9-754T, a gene cluster (GQR91_18700 - GQR91_18715) related to an antioxidant enzyme was identified in the obtained draft genome. The information obtained from the draft genome is expected to reveal the putative properties helpful in biocontrol applications.

2.
J Glob Antimicrob Resist ; 14: 1-3, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29775788

RESUMO

OBJECTIVES: Achromobacter spanius is a newly described, non-fermenting, Gram-negative, coccoid pathogen isolated from human blood. Whole-genome sequencing of the A. spanius type strain was performed to investigate the mechanism of pathogenesis of this strain at a genomic level. METHODS: The complete genome of A. spanius type strain DSM 23806T was sequenced using single-molecule real-time (SMRT) DNA sequencing. RESULTS: The complete genome of DSM 23806T consists of one circular DNA chromosome of 6425783bp with a G+C content of 64.26%. The entire genome contains 5804 predicted coding sequences (CDS) and 55 tRNAs. Genomic island (GI) analysis showed that this strain encodes several important pathogenesis- and resistance-related genes. CONCLUSIONS: These results strongly suggest that GIs provide some fitness advantages in A. spanius type strain DSM 23806T. This report provides an extensive understanding of A. spanius at a genomic level as well as an understanding of the evolution of A. spanius.


Assuntos
Achromobacter/genética , Achromobacter/patogenicidade , Genoma Bacteriano , Achromobacter/isolamento & purificação , China , DNA Bacteriano/genética , Genômica , Infecções por Bactérias Gram-Negativas/sangue , Humanos , Filogenia , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Sequenciamento Completo do Genoma
3.
Pathog Dis ; 75(4)2017 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-28369432

RESUMO

Achromobacter insolitus is a newly described, Gram-negative, small (1-2 mm long) and coccoid pathogen that has been isolated from leg wound. Due to its potential threat to human beings, the type strain of this species LMG 6003T was completely sequenced in this study. The genomic analysis revealed that the genome of LMG 6003T consists of one circular DNA chromosome of 6 492 697 bp with a GC content of 65.10%. The entire genome contains 6208 predicted coding genes, 61 tRNAs and 13 rRNA genes. Comparative genome analysis between LMG 6003T and another selected 10 sequenced Achromobacter revealed that 725 genes only exist in LMG 6003T. In particular, these genes include several important pathogenic-related genes such as Type IV prepilin peptidase (TadV/CpaA), Type VI secretion lipoprotein (VasD) and type 1 fimbriae major subunit (FimA). Genomic island (GI) analysis also suggests the existence of GIs in LMG 6003T. All these results strongly suggest the unique genomic features in LMG 6003T against other Achromobacter species. This report will provide us with an extended understanding of A. insolitus at the genomic level and would be helpful for understanding the evolution of the Achromobacter genus.


Assuntos
Achromobacter/genética , Mapeamento Cromossômico , DNA Bacteriano/genética , Regulação Bacteriana da Expressão Gênica , Genoma Bacteriano , Achromobacter/classificação , Achromobacter/isolamento & purificação , Composição de Bases , DNA Bacteriano/metabolismo , DNA Circular/genética , DNA Circular/metabolismo , Endopeptidases/genética , Endopeptidases/metabolismo , Proteínas de Fímbrias/genética , Proteínas de Fímbrias/metabolismo , Ontologia Genética , Ilhas Genômicas , Humanos , Perna (Membro)/microbiologia , Anotação de Sequência Molecular , RNA Ribossômico 16S/genética , RNA Ribossômico 16S/metabolismo , RNA de Transferência/genética , RNA de Transferência/metabolismo , Sistemas de Secreção Tipo VI/genética , Sistemas de Secreção Tipo VI/metabolismo , Sequenciamento Completo do Genoma
4.
Microb Pathog ; 97: 27-33, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27224859

RESUMO

Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the leading swine pathogens and causes major economic loss to the global swine industry. In this study, a total of 49 PRRSV isolates were collected from different swine herds in seven provinces in Southeast China from 2014 to 2015. All the ORF5 genes and some Nsp2 genes were sequenced. Phylogenetic analysis showed that all the isolates belonged to the North America genotype. Among them, five isolates formed a new subgenotype IV derived from highly pathogenic PRRSV (HP-PRRSV). Six isolates formed subgenotype III, which were closely related to the NADC30 strain in the US. These isolates formed 13 putative N-linked glycosylation site (NGS) patterns based on N30, 33, 34, 35, 44 and 51. There were fewer NGSs of isolates in subgenotype IV than in subgenotype III. This indicates that the two new subgenotypes of PRRSV strains with different NGS patterns were spreading in those regions of China. The genetic diversity should be considered for the control and prevention of this disease.


Assuntos
Genótipo , Síndrome Respiratória e Reprodutiva Suína/epidemiologia , Síndrome Respiratória e Reprodutiva Suína/virologia , Vírus da Síndrome Respiratória e Reprodutiva Suína/classificação , Vírus da Síndrome Respiratória e Reprodutiva Suína/genética , América , Animais , China/epidemiologia , Análise por Conglomerados , Epidemiologia Molecular , Filogenia , Vírus da Síndrome Respiratória e Reprodutiva Suína/isolamento & purificação , Análise de Sequência de DNA , Homologia de Sequência , Suínos , Proteínas do Envelope Viral/genética , Proteínas não Estruturais Virais/genética
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