Streptomyces Lydicus
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Identificação de um metabólito antifúngico produzido pela cepa Actinomyces A01
A cepa Actinomyces A01 foi isolada do solo de um campo agrícola no subúrbio de Beijing, China. De acordo com as características morfológicas, culturais, fisiológicas e bioquímicas, e análise da sequência 16S rDNA , a cepa A01 foi identificada como Streptomyces lydicus. Nos testes de espectro antimicrobiano, a cepa A01 apresentou atividade inibitória
Brazilian Journal of Microbiology. Publicado em: 2008-12
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2. Novo processo para a extração e simultânea degomagem de fibras de banana
Vários parâmetros de processo de produção de poligalacturonase por Streptomyces lydicus por fermentação em estado sólido foram otimizados. O tamanho ótimo de partícula de farelo de trigo para a produção de poligalacturonase esteve na faixa de 500 a 1000 mm. O teor inicial de umidade de 70% foi o melhor para a produção da enzima. O inóculo inici
Brazilian Journal of Microbiology. Publicado em: 2008-03
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3. Novel Plant-Microbe Rhizosphere Interaction Involving Streptomyces lydicus WYEC108 and the Pea Plant (Pisum sativum)
A previously undescribed plant-microbe interaction between a root-colonizing Streptomyces species, S. lydicus WYEC108, and the legume Pisum sativum is described. The interaction is potentially of great importance to the health and growth in nature of this nodulating legume. The root-colonizing soil actinomycete S. lydicus WYEC108 influences pea root nodulati
American Society for Microbiology.
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4. Use of Randomly Amplified Polymorphic DNA as a Means of Developing Genus- and Strain-Specific Streptomyces DNA Probes
We have analyzed 20 randomly amplified polymorphic DNA (RAPD) primers against 36 Streptomyces strains, including 17 taxonomically undefined strains, 25 nonstreptomycete actinomycetes, and 12 outgroups consisting of gram-positive and -negative species. Most of the primers were useful in identifying unique DNA polymorphisms of all strains tested. We have used
American Society for Microbiology.
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5. Production, purification, and characterization of chandramycin, a polypeptide antibiotic from Streptomyces lydicus.
A plant pathogenic actinomycete identified as Streptomyces lydicus was isolated from the deep-pitted scab lesions of potato tubers. This strain produces a new polypeptide antibiotic named chandramycin. The antibiotic was isolated from culture broth by extraction with organic solvents and purified by chromatography. The purified antibiotic is a light-yellow c
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6. Biological Studies with α-Dehydrobiotin
A growing culture of Streptomyces lydicus converted biotin-14C to α-dehydrobiotin-14C. The conversion was demonstrated by isolating crystalline α-dehydrobiotin-14C from fermentation liquors supplemented with biotin-14C. The addition of pimelic acid-14C to the growing culture did not produce any radioactive α-dehydrobiotin. α-Dehydrobiotin did not substit
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7. Two New Antimetabolites of Biotin: α-Methyldethiobiotin and α-Methylbiotin
Two new antimetabolites of biotin were isolated from culture filtrates of Streptomyces lydicus: β-methyldethiobiotin and β-methylbiotin. 14C-biotin or 14C-pimelic acid was not incorporated into either of these antimetabolites by the growing culture. Neither of the compounds could substitute for the biotin requirement in Saccharomyces cerevisiae. Both compo
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8. Characterization of streptomyces lydicus WYEC108 as a potential biocontrol agent against fungal root and seed rots.
The actinomycete Streptomyces lydicus WYEC108 showed strong in vitro antagonism against various fungal plant pathogens in plate assays by producing extracellular antifungal metabolites. When Pythium ultimum or Rhizoctonia solani was grown in liquid medium with S. lydicus WYEC108, inhibition of growth of the fungi was observed. When WYEC108 spores or mycelia