中国蔬菜
中國蔬菜
중국소채
CHINA VEGETABLES
2015年
6期
23-27
,共5页
孙莉%易图永%粟智平%王雅菲%魏润洁%董俊
孫莉%易圖永%粟智平%王雅菲%魏潤潔%董俊
손리%역도영%속지평%왕아비%위윤길%동준
黄瓜疫霉菌%生物防治%弗吉尼亚链霉菌%地衣芽孢杆菌
黃瓜疫黴菌%生物防治%弗吉尼亞鏈黴菌%地衣芽孢桿菌
황과역매균%생물방치%불길니아련매균%지의아포간균
Phytophthora melonis%Biological control%Streptomyces virginiae%Bacillus licheniformis
为了筛选对黄瓜疫霉菌有抑制作用的生防菌,采用土壤稀释法从湖南、北京等地采集的土壤样品中分离到269株放线菌和细菌,以黄瓜疫霉菌为靶标菌,通过平板对峙培养法,筛选出2株对黄瓜疫霉菌有明显拮抗作用的生防菌株。采用5倍稀释发酵液对黄瓜疫霉菌进行抑菌活性检测,放线菌X54和细菌P3的抑制率达到70%以上。通过培养形态特征观察、生理生化试验及16S rDNA分子鉴定,放线菌X54为弗吉尼亚链霉菌(Streptomyces virginiae),细菌P3为地衣芽孢杆菌(Bacillus licheniformis)。
為瞭篩選對黃瓜疫黴菌有抑製作用的生防菌,採用土壤稀釋法從湖南、北京等地採集的土壤樣品中分離到269株放線菌和細菌,以黃瓜疫黴菌為靶標菌,通過平闆對峙培養法,篩選齣2株對黃瓜疫黴菌有明顯拮抗作用的生防菌株。採用5倍稀釋髮酵液對黃瓜疫黴菌進行抑菌活性檢測,放線菌X54和細菌P3的抑製率達到70%以上。通過培養形態特徵觀察、生理生化試驗及16S rDNA分子鑒定,放線菌X54為弗吉尼亞鏈黴菌(Streptomyces virginiae),細菌P3為地衣芽孢桿菌(Bacillus licheniformis)。
위료사선대황과역매균유억제작용적생방균,채용토양희석법종호남、북경등지채집적토양양품중분리도269주방선균화세균,이황과역매균위파표균,통과평판대치배양법,사선출2주대황과역매균유명현길항작용적생방균주。채용5배희석발효액대황과역매균진행억균활성검측,방선균X54화세균P3적억제솔체도70%이상。통과배양형태특정관찰、생리생화시험급16S rDNA분자감정,방선균X54위불길니아련매균(Streptomyces virginiae),세균P3위지의아포간균(Bacillus licheniformis)。
In order to screen effective antagonistic agents toPhytophthora melonis, 269 strains were isolated from collected soil in Hunan and Beijing with gradient dilution method. 2 strains showed obvious antagonistic effects toPhytophthora melonis by using agar plate dual culture, and strain X54 and strain P3 were finally screened out. The diluted 5 times filtration showed their inhibition rates were over 70%. Through observation of culture morphological characteristics, physiological and biochemical experiment, and molecular identification of 16S rDNA, we found that actinomycete X54 wasStreptomyces virginiae and bacterial P3 wasBacillus licheniformis.