efficient blue-white screening based gene inactivation system for Streptomyces

Streptomyces is studied intensively for its outstanding ability to produce bioactive secondary metabolites and for its complicated morphological differentiation process. A classical genetic manipulation system for Streptomyces has been developed and widely used in the community for a long time, usin...

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Veröffentlicht in:Applied microbiology and biotechnology 2015-02, Vol.99 (4), p.1923-1933
Hauptverfasser: Li, Pengwei, Li, Jine, Guo, Zhengyan, Tang, Wei, Han, Jianshan, Meng, Xiangxi, Hao, Tingting, Zhu, Yaxin, Zhang, Lixin, Chen, Yihua
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container_end_page 1933
container_issue 4
container_start_page 1923
container_title Applied microbiology and biotechnology
container_volume 99
creator Li, Pengwei
Li, Jine
Guo, Zhengyan
Tang, Wei
Han, Jianshan
Meng, Xiangxi
Hao, Tingting
Zhu, Yaxin
Zhang, Lixin
Chen, Yihua
description Streptomyces is studied intensively for its outstanding ability to produce bioactive secondary metabolites and for its complicated morphological differentiation process. A classical genetic manipulation system for Streptomyces has been developed and widely used in the community for a long time, using antibiotic resistance markers to select for double-crossover mutants. The screening process is always laborious and time-consuming. However, the lack of a suitable chromogenic reporter for Streptomyces has limited the use of color-based screening system to simplify the selection process for double-crossover mutants. In this study, a blue reporter system for Streptomyces has been established by mining an indigoidine synthetase gene (idgS) from Streptomyces lavendulae CGMCC 4.1386, leading to the development of a time-saving gene inactivation system for Streptomyces by simple blue-white screening. A series of Streptomyces suicide and temperature-sensitive plasmids containing the idgS reporter cassette were constructed and used successfully to inactivate genes in Streptomyces, allowing a simple and efficient screening method to differentiate the colonies for double-crossover (white) and single-crossover (blue) mutants. Inactivation of the putative γ-butyrolactone synthase gene afsA-y via the idgS-based blue-white screening method revealed that the paulomycin production is negatively controlled by afsA-y in Streptomyces sp. YN86.
doi_str_mv 10.1007/s00253-014-6369-0
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A classical genetic manipulation system for Streptomyces has been developed and widely used in the community for a long time, using antibiotic resistance markers to select for double-crossover mutants. The screening process is always laborious and time-consuming. However, the lack of a suitable chromogenic reporter for Streptomyces has limited the use of color-based screening system to simplify the selection process for double-crossover mutants. In this study, a blue reporter system for Streptomyces has been established by mining an indigoidine synthetase gene (idgS) from Streptomyces lavendulae CGMCC 4.1386, leading to the development of a time-saving gene inactivation system for Streptomyces by simple blue-white screening. A series of Streptomyces suicide and temperature-sensitive plasmids containing the idgS reporter cassette were constructed and used successfully to inactivate genes in Streptomyces, allowing a simple and efficient screening method to differentiate the colonies for double-crossover (white) and single-crossover (blue) mutants. Inactivation of the putative γ-butyrolactone synthase gene afsA-y via the idgS-based blue-white screening method revealed that the paulomycin production is negatively controlled by afsA-y in Streptomyces sp. 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A classical genetic manipulation system for Streptomyces has been developed and widely used in the community for a long time, using antibiotic resistance markers to select for double-crossover mutants. The screening process is always laborious and time-consuming. However, the lack of a suitable chromogenic reporter for Streptomyces has limited the use of color-based screening system to simplify the selection process for double-crossover mutants. In this study, a blue reporter system for Streptomyces has been established by mining an indigoidine synthetase gene (idgS) from Streptomyces lavendulae CGMCC 4.1386, leading to the development of a time-saving gene inactivation system for Streptomyces by simple blue-white screening. A series of Streptomyces suicide and temperature-sensitive plasmids containing the idgS reporter cassette were constructed and used successfully to inactivate genes in Streptomyces, allowing a simple and efficient screening method to differentiate the colonies for double-crossover (white) and single-crossover (blue) mutants. Inactivation of the putative γ-butyrolactone synthase gene afsA-y via the idgS-based blue-white screening method revealed that the paulomycin production is negatively controlled by afsA-y in Streptomyces sp. 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A series of Streptomyces suicide and temperature-sensitive plasmids containing the idgS reporter cassette were constructed and used successfully to inactivate genes in Streptomyces, allowing a simple and efficient screening method to differentiate the colonies for double-crossover (white) and single-crossover (blue) mutants. Inactivation of the putative γ-butyrolactone synthase gene afsA-y via the idgS-based blue-white screening method revealed that the paulomycin production is negatively controlled by afsA-y in Streptomyces sp. YN86.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><pmid>25666782</pmid><doi>10.1007/s00253-014-6369-0</doi><tpages>11</tpages></addata></record>
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identifier ISSN: 0175-7598
ispartof Applied microbiology and biotechnology, 2015-02, Vol.99 (4), p.1923-1933
issn 0175-7598
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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Analysis
Antibiotic resistance
Antibiotics
Bacteria
bioactive properties
Biological activity
Biomedical and Life Sciences
Biosynthesis
Biotechnology
Crosses, Genetic
DNA, Bacterial - chemistry
DNA, Bacterial - genetics
Drug resistance
Gene Silencing
Genes
Genes, Bacterial
Genes, Reporter
Genetic aspects
genetic engineering
Genetic screening
Genetic Testing - methods
Genetic Vectors
Genetics, Microbial - methods
Inactivation
Laboratories
Life Sciences
Metabolites
Methods
Methods and Protocols
Microbial Genetics and Genomics
Microbiology
Molecular Biology - methods
Molecular Sequence Data
Morphology
mutants
Piperidones - metabolism
Plasmids
Proteins
Recombination, Genetic
screening
Secondary metabolites
Sequence Analysis, DNA
Signal transduction
Streptomyces
Streptomyces - genetics
Streptomyces - isolation & purification
Streptomyces lavendulae
Studies
Suicide
title efficient blue-white screening based gene inactivation system for Streptomyces
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