CAJ | 학술논문

从贵州赤水河流域茅台镇及周边地区采集土样,用高氏1号培养基从6份土样中共分离到放线菌32株,根据形态学和生理生化特征,从中筛选15株进行分子鉴定和系统发育树分析,16S rDNA测序比对结果表明:MA06为白色类诺卡氏菌(Nocardioides albus),MA24为原小单孢菌(Promicromonospora),其余13株为链霉菌(Streptomyces),其中MA03为极暗黄链霉菌(Streptomyces fulvissimus),MA14为Streptomyces europaeiscabiei, MA07属Streptomyces sp..通过构建系统发育树发现:15株放线菌分离株聚为三支,MA06和MA24各单列一支,其余的聚为第三大支,进一步表明了链霉菌属、类诺卡氏菌属和原小单孢菌属相互之间亲缘关系较远.抗菌活性检测发现M07、M25、M30和M32抗菌作用强,预示其作为生防资源菌和抗生素产生菌的潜在价值.
종귀주적수하류역모태진급주변지구채집토양,용고씨1호배양기종6빈토양중공분리도방선균32주,근거형태학화생리생화특정,종중사선15주진행분자감정화계통발육수분석,16S rDNA측서비대결과표명:MA06위백색류낙잡씨균(Nocardioides albus),MA24위원소단포균(Promicromonospora),기여13주위련매균(Streptomyces),기중MA03위겁암황련매균(Streptomyces fulvissimus),MA14위Streptomyces europaeiscabiei, MA07속Streptomyces sp..통과구건계통발육수발현:15주방선균분리주취위삼지,MA06화MA24각단렬일지,기여적취위제삼대지,진일보표명료련매균속、류낙잡씨균속화원소단포균속상호지간친연관계교원.항균활성검측발현M07、M25、M30화M32항균작용강,예시기작위생방자원균화항생소산생균적잠재개치.
@@@@Soil samples were collected from Maotai town and periphery areas in Chishui river basin. A total of 32 actinomycetes were isolated from 6 soil samples with Gaos No. 1 synthetic medium. Molecular identification and phylogenetic analysis were carried out on 15 isolates selected by morphology and biochemistry characteristics. The results of 16S rDNA sequencing and comparison with the reported data in GenBank revealed that strain MA06 is Nocardioides albus,MA24 is genus of Promicromonospora,and the other 13 isolates are genera of Streptomyces, among which MA03 is Streptomyces fulvissimus,MA14 is Streptomyces europaeiscabiei and MA07 is Streptomyces sp. . Phylogenetic analysis indicated that MA06 and MA24 clustered in 2 branches individually,and the other 13 isolates clustered together,forming the third branch. These facts proved that the distance between these 3 genera of Nocardioides,Promicromonospora and Streptomyces is far off. The antimicrobial efficacy of strains M07,M25,M30 and M32 is powerful by bacteria and fungi test. The results indicated the potential of these isolates may serve as bio-control or antibiotics producing microbes.