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冬青卫矛内生放线菌Streptomyces flavofuscus G1 发酵液中抑菌活性成分研究
冬青卫矛 内生菌 Streptomyces flavofuscus G1 抑菌活性
2016/3/18
从冬青卫矛内生放线菌Streptomyces flavofuscus G1的发酵液中分离得到化合物G13和G19。经核磁共振波谱及质谱分析,并结合相关文献,两个化合物分别被鉴定为phencomycin(G13)和4'-deacetyl-(-)-griseusin A(G19)。抑菌活性测定结果表明: G19对水稻白叶枯病菌Xanthomonas oryzae pv. oryzae、铜绿假单孢菌Ps...
Fractionation and structural identification of antibiotic activity substances from Streptomyces herbaricolor HNS2-2
Streptomyces Herbaricolor HNS2-2 Quercetin Dehydrate
2013/2/28
Four groups of antibiotic activity compounds were separated and purified from the ethyl acetate fraction of a broth culture of Streptomyces herbaricolor HNS2-2.Trace analyses were performed and anti-m...
Evaluation of the toxicity of Streptomyces aburaviensis (R9) extract towards various agricultural pests
Algae Catfish Cyanobacteria Fungi Pathogens Streptomyces
2013/3/5
The dichloromethane extract of culture filtrate from Streptomyces aburaviensis R9 was evaluated using various rapid bioassays to determine potential inhibitory effects towards phytopathogenic fungi (C...
Optimization and production of antifungal hydrolysis enzymes by streptomyces aureofaciens against Colletotrichum gloeosporioides of mango
Antifungal Colletotrichum Gloeosporioides
2013/3/4
We isolated naturally occurring actinomycetes with an ability to produce metabolites having antifungal property against, Colletotrichum gloeosporioides, the causal agent of mango anthracnose. One prom...
通过设计简并引物和构建基因组文库的方法从链霉菌Streptomyces sp.S9中克隆得到β-l,4-木聚糖酶基因xynBS9。该基因全长1 023 bp，编码340个氨基酸。将不带原基因信号肽编码序列的xynBS9以正确阅读框架克隆到表达载体pET-22b(+)上，并在大肠杆菌BL2l(DE3)中诱导表达。重组蛋白经硫酸铵分级沉淀和疏水柱纯化后达到电泳纯。酶学性质分析表明，重组木聚糖酶最适温度...
目的 对海绵共附生放线菌Streptomyces sp. A01059的发酵液进行研究，以获得有抗稻瘟病活性的化合物；方法 用乙酸乙酯对发酵液进行萃取，然后用活性追踪的方法对乙酸乙酯萃取物进行分析，最后使用制备液相获得相应的活性部位；结果 获得分子量为508和522的两个活性化合物；结论 本实验首次对放线菌Streptomyces sp. A01059的代谢产物进行分离研究，为稻瘟病的防治提供了新...
Potato berry bioassay to detect Streptomyces spp. that produce phytotoxic thaxtomin A and cause potato common scab
common scab necrosis potato berry Streptomyces spp thaxtomin A
2009/3/17
The thaxtomin-A-producing ability of Streptomyces spp. isolates (nine isolates of S. scabies, five isolates of S. turgidiscabies, one isolate of S. acidiscabies) was assessed by the development of n...
Effect of Antibiotics on Formation of Aerial Mycelium and Production of Phytotoxins in Streptomyces spp.
antibiotic potato scab phytotoxin morphological differentiation Streptomyces
2009/3/7
Thirty different antibiotics with various structures and modes of action were tested for effects on the formation of aerial mycelia in Streptomyces scabies, S. acidiscabies, and S. alboniger. Many...
Isolation and structural properties of aerial mycelium differentiation-inhibitory substances against Streptomyces scabiei causing potato common scab
potato common scab Streptomyces scabiei inhibitor aerial mycelium
2009/3/5
The inhibitor of aerial mycelium differentiation in Streptomyces scabiei, a pathogen of potato common scab, was searched. An actinomycete isolated from the field was found to produce inhibitors and ...
Isolation and Partial Characterization of Extracellular Keratinase from a Novel Mesophilic Streptomyces albus AZA
Isolation characterization extracellular keratinase and Streptomyces albus
2010/11/10
The novel mesophilic marine Streptomyces albus AZA strain was investigated for its ability to
produce constitutive and inducible extracellular keratinase. In this study different substrates were used...
PRODUCTION OF XYLANASES BY STREPTOMYCES SPECIES AND THEIR BLEACHING EFFECT ON RICE STRAW PULP
Streptomyces sp. cellulase- free xylanases rice straw pulp biobleaching
2010/3/24
The number of potential applications of microbial xylanases in the pulp and paper industry is
gradually increasing and several are approaching commercial use. This industry needs a xylanase, which is...