China Journal of Chinese Materia Media

2018, v.43(03) 478-483

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Identification of endophytic bacteria BZJN1 and research on biological control of root rot of Atractylodes macrocephala

YOU Jing-mao;XIONG Kun;MU Sen;GUO Jie;GUO Xiao-liang;DUAN Yuan-yuan;LI Juan;CAO Fan;ZOU Zong-cheng;TAN Hai;

Abstract:

In this study,an endophytic bacteria strain BZJN1 was isolated from Atractylodes macrocephala,and identified as Bacillus subtilis by physiological and biochemical tests and molecular identification. Strain BZJN1 could inhibit the growth of mycelia of Ceratobasidium sp. significantly,and the inhibition rate was more than 70%. The mycelium growth deformity with bulge as spherical and partially exhaustible in apex or central with microscopic observation. The inhibitory rates under 3% and 6% concentrations of the cell free fermentation were 22. 7% and 38. 7% expectively. The field test proved that the control efficacy of treatment of 1 × 10~9cfu·mL~(-1) is 75. 27% and 72. 37% after 10 and 20 days. All the treatments of strain BZJN1 was able to promote the growth of A. macrocephala,the treatment of 1 × 10~9cfu·mL~(-1) could able to increase the yield to 14. 1%.

Key Words: Bacillus subtilis;Atractylodes macrocephala;Ceratobasidium sp;control

Abstract:

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Foundation: 湖北省自然科学基金面上项目(2016CFB521);; 湖北省农业科学院竞争性项目(2016JZXJH019);湖北省农业科学院青年科学基金项目(2018NKYJJ16);; 国家现代农业产业技术体系建设专项(CARS-21);; 湖北省技术创新专项(民族专项MZZX2018000005)

Authors: YOU Jing-mao;XIONG Kun;MU Sen;GUO Jie;GUO Xiao-liang;DUAN Yuan-yuan;LI Juan;CAO Fan;ZOU Zong-cheng;TAN Hai;

DOI: 10.19540/j.cnki.cjcmm.20180105.008

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