Screening and Identification of the Antagonistic Actinomyces Against Alterna ria Alternata

doi:10.7668/hbnxb.2008.S1.054

Abstract

Abstract: Twenty Act inomyces were isolated from soil with dilution isolation, which collected from Jin bian brook,Zhang Jiajie. Antagonistic strains were screened for the bioact ivity targeted against Alternaria alternata. Pair-culturehowed S-1, S-6, S-16 and S-20 were screened which had higher inhibition rate(inhibition rate> 50% ). The inhibitionrate were 51.7%, 53.4%, 51.9%, 71.4%, and then the fermentation liquid of strains was determined, The resultsshowed S-20 had the best ant-i bacteria effect. The inhibition zones was 26??3mm, In order to recognize this strain, basedon its cultural, physiological and biochemical characterist ics, S-20 was designated as the series globisporus of stretomyce.The inhibition range showed that S-20 not only effect on Altermaria altermata but also on the other pathogens. The inhibition range widely.

Key words: Alternaria alternate, Isolation, Selection, Ident ification

CLC Number:

S435.72

ZHAN Li-ran, ZHANG Ke-cheng, RAN Long-xian, SHI Yi-ping, Alatanfu, WANG Wan-qun. Screening and Identification of the Antagonistic Actinomyces Against Alterna ria Alternata[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 230-233. doi: 10.7668/hbnxb.2008.S1.054.

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