Antagonistic Effects of Sphingomonas and Pseudomonas aeruginosa on 4 Kinds of Pathogenic Bacteria of Ginseng  

作　　者：Hairu YU Feifan YAN Yunlong WANG Xinying TONG Di CHEN Qiang YE Renzhe PIAO Hongyan ZHAO 

机构地区：[1]Yanbian Characteristic Industry Development Center, Yanji 133002, China [2]College of Agriculture, Yanbian University, Yanji 133002, China [3]Longjing Agricultural Technology Extension Station, Longjing 133400, China [4]Yanbian Korean Autonomous Prefecture Academy of Agricultural Sciences, Longjing 133400, China

出　　处：《Asian Agricultural Research》2022年第5期31-35,共5页亚洲农业研究（英文）

基　　金：Project of Jilin Provincial Department of Science and Technology(20200403028SF,20200402040NC);Project of Yanbian Korean Autonomous Prefecture Bureau of Science and Technology(2019NS11).

摘　　要：[Objectives]To explore effective biocontrol methods for diseases in the process of ginseng cultivation,and develop an efficient and environmentally friendly biocontrol agent.[Methods]In this study,2 strains were isolated from biogas slurry,and Cylindrocarpon destructans(XF),Fusarium solani(GF),Botrytis cinerea Pers(HM)and Alternaria panax Whetz(HB)were used as test materials.The strains were isolated and identified by dilution plate method,16S rDNA sequence identification method,confrontation culture method,filter paper method and ultraviolet spectrophotometer method,and the bacteriostatic activity and bacteriostatic rate were tested.[Results]Strain 15(Sphingomonas)and strain 19(Pseudomonas aeruginosa)were screened out through identification and analysis,and they grew stably within 8-10 d.The bacteriostatic rates of strain 15 against A.panax and B.cinerea were 47.37%and 43.40%,respectively,and the bacteriostatic rates of strain 19 against A.panax and B.cinerea were 62.30%and 63.27%,respectively.The bacteriostatic activity of the extract of strain 19 increased with the increase of OD_(600) value,and the bacteriostatic effect was optimal when the OD_(600) value was in the range of 0.8-1.0,up to 70%,so it had a strong biocontrol potential.[Conclusions]This experiment provides convenience for more effective inoculation,establishes a fast,simple and accurate method for the determination of the best bacteriostatic rate of P.aeruginosa culture solution to HM,and lays a foundation for large-scale culture of P.aeruginosa culture solution.Besides,it is expected to provide a theoretical basis for the efficient control of ginseng B.cinerea in field production,use it for the prevention and control of ginseng shoot diseases,and provide a reference for the efficient and diverse development of biocontrol agents for ginseng shoot diseases.

关 键 词：Panax ginseng C.A.Meyer Ginseng diseases Antagonistic bacteria SCREENING IDENTIFICATION 

分 类 号：R28[医药卫生—中药学]