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本研究从节瓜根际分离到一株具有防病促生功能的荧光类假单胞菌FP1761。该菌株对部分植物病原真菌和细菌具有拮抗能力,能够解钾、解有机磷和无机磷,可产生氨、蛋白酶、嗜铁素、吲哚乙酸。生物测定表明菌株FP1761可显著促进小麦生长。生理生化、平均核苷酸相似度、16S rDNA和多基因分析将FP1761鉴定为摩拉维亚假单胞菌(Pseudomonas moraviensis)。菌株FP1761基因组草图全...
灰霉病是梨贮藏期的主要病害,发病率高,为害严重。为了有效控制该病害发生,利用平皿稀释法从梨根际土壤中分离内生细菌,并采用琼脂平板扩散法进行抑菌活性初筛,筛选出1株拮抗细菌L21,基于形态特征、生理生化特性及16S rRNA和gyrB序列分析,鉴定为Pseudomonas extremorientalis。采用生长速率法测定菌株L21的无菌发酵液对12种病原真菌均有抑制作用,采用Salkowski比...
The genus Hypericum L. (St. John’s-wort, Hypericaceae) has received scientific interest in recent years, because it is a source of a variety of bioactive compounds including the phenolics. We determ...
Most of the vegetable crops are known to depend upon arbuscular mycorrhizal fungal (AM) symbiosis for growth and development, since AM fungi provide nutrients and water in exchange for photosynthate...
Sheath rot of rice and leaf blight of wheat caused by Pseudomonas syringae pv. syringae are the important bacterial pathogens of rice and wheat in Iran. The randomly amplified polymorphic DNA (RAPD) m...
The potential of antagonistic rhizobacteria in the management of bacterial blight of cotton caused by Xanthomonas axonopodis pv. malvacearum (Xam) was evaluated under greenhouse and field conditions...
The percentage of diseased plants of the total plants in the plot was around 10%. When inoculated into potato tuber slices, strains of P. marginalis and P. c. subsp. carotovorum produced soft rot....
The bacterium Pseudomonas savastanoi pv. nerii was identified as the causal agent of parenchymatous galls on leaves of potted oleander plants grown at Brno, Moravia, in 2004. The plants had originated...
The influence of antagonistic Pseudomonas spp. on the development of Botrytis cinerea and Penicillium expansum was studied in liquid cultures. Two strains of Pseudomonas spp. (B194 and B224), original...
In March of 2007, leaf symptoms were observed on two commercial fields of arugula (Eruca vesicaria subsp. sativa) grown in Heraklion, Crete. Approximately 20% of plants were affected. Likewise, simila...
Bacterial canker caused by Pseudomonas syringae pv. actinidiae is one of the most harmful diseases affecting kiwifruit plants. It was first isolated and identified in Japan on kiwifruit plants(Actinid...
【目的】明确在中国发生的梨花枯和芽枯的确切病原菌。【方法】用普通细菌学方法、电镜观察、Koch氏病原假说测定、Biolog、脂肪酸分析、PCR及与标准对照菌株的比较。【结果】从16个病样中分离获得12菌株,6株代表菌株显示出与Pseudomonas syringae pv. syringae 3株标准对照菌株相似的致病反应,它们的Biolog和脂肪酸分析的相似度分别为0.57~0.86 和0.58...
Pathogens and insects seem to attack unhealthy plants, and the trace of unhealthy growth may remain in the plant organs after attack. Grain yield of rice plants infected with bacterial grain rot (Pse...
Pseudomonas fluorescens 7-14 (Pf7-14)是一株对水稻纹枯病、稻瘟病和恶苗病有拮抗作用的细菌菌株。在温室条件下, 在水稻孕穗后期喷雾浓度为11010cfu/ml的菌株Pf7-14悬浮液,采用定期取样,用稀释平板法回收细菌,并通过图形测试和Shapiro-Wilk正态测试,测定了该菌株在水稻剑叶和茎基部的时间、空间定殖型。结果表明,菌株Pf7-14 在稻株上的定殖型随...
The degree of pectinolytic, celulolytic, amylolytic and proteolytic enzymes activity as well as the ability to set in motion insoluble phosphates by the fluorescent bacilli of the genus Pseudomonas we...

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