文献类型： 外文期刊

作者： Zhang, Y. ¹ ; Wang, C. ² ; Su, P. ³ ; Liao, X. L. ⁴ ; Liu, S. Q. ¹ ;

作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Dept Plant Protect, Changsha, Hunan, Peoples R China

2.Hunan Agr Univ, Coll Sci, Dept Chem, Changsha, Hunan, Peoples R China

3.Hunan Acad Agr Sci, Inst Plant Protect, Lab Biocontrol, Changsha, Hunan, Peoples R China

4.Hunan Prov Key Lab Biol & Control Plant Dis & Pla, Changsha 410128, Hunan, Peoples R China

关键词： Pseudomonas aeruginosa;Rhizoctoniasolani;Xanthomonas;antibiotic compound;phenazzine-1-carboxamide

期刊名称：EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL （ 影响因子：1.995； 五年影响因子：1.115 ）

ISSN： 1110-1768

年卷期： 2016 年 26 卷 2 期

页码：

收录情况： SCI

摘要： Plant pathogenic fungi, Rhizoctonia solani and bacteria, such as Xanthomonas oryzae pv. oryzicola and X. campestris pv. citri, caused critical loss in agriculture. Developing new alternative biological agents with high efficiency and low toxicity is needed. In this work, An antagonistic Pseudomonas aeruginosa strain SU8 from a farm breeding ducks and growing rice simultaneously was isolated. It was identified according to its 16S rRNA gene and morphological, physiological and biochemical characteristics. Also, an antibiotic compound F125 (phenazine-l-carboxamide) was separated from its ethyl acetate extract. F125 showed 83.63% grow inhibition rate against R. solani at 0.01 mg/ml concentration, meanwhile, EC50 of it was 0.7863 mg/ml and 1.5661 mg/ml against X oryzae pv. oryzicola and X campestris pv. citri, respectively. Furthermore, F125 showed high safety for rice and mice. Rice could sprout and grow normally when F125 concentration was below 0.06 mg/ml and 0.1 mg/ml, respectively. Also, acute toxicity of F125 against mice resulted in LD50 > 5 mg/g BW (body weight). In a whole, F125 displayed a promising prospect in the crop disease prevention.