首页> 外文期刊>African Journal of Biotechnology >Morphological and molecular characterization of L-methioninase producing Aspergillus species
【24h】

Morphological and molecular characterization of L-methioninase producing Aspergillus species

机译:产生L-蛋氨酸酶的曲霉菌的形态和分子特征

获取原文
           

摘要

Six species of L-methioninase producing?Aspergillus?species, isolated from Egyptian soil, were selected for comprehensive morphotypic and molecular characterization. Based on morphological and physiological features, these isolates were identified asAspergillus flavipes,?Aspergillus carneus,?Aspergillus flavus,?Aspergillus tamari,Aspergillus oryzae, and?Aspergillus parasiticus. Regarding to the maximum enzyme productivity by?A. flavipes,?it was selected as authentic strain for ribosomal ribonucleic acid (rRNA) primer design. Using primer combinations for 18S rRNA and internal transcribed spacers (ITS)1 amplification, these isolates gave the same polymerase chain reaction (PCR) amplicon size, revealing the relative molecular identity. Moreover, using ITS2 primers, among the six isolates,?Aspergillus flavipesEK and?A. carneus?displayed PCR products on agarose gel, approving the actual morphological and biochemical similarities of these two isolates,?A. flavipes?group. By sequencing of ITS1-5.8S-ITS2 region, blasting and alignment from the data base,?A. flavipes?EK showed a typical identity to gene bank deposited?A. flavipes?isolates. The rRNA sequence of?A. flavipes?EK was deposited to genbank under accession number JF831014.
机译:从埃及土壤中分离出六种产L-蛋氨酸酶的曲霉菌,进行了全面的形态学和分子表征。根据形态和生理学特征,将这些分离物鉴定为黄曲霉,肉曲霉,黄曲霉,柳曲霉,米曲霉和寄生曲霉。关于最大酶生产率?黄病毒,被选为核糖体核糖核酸(rRNA)引物设计的真实菌株。使用用于18S rRNA的引物组合和内部转录间隔区(ITS)1扩增,这些分离物得到的聚合酶链反应(PCR)扩增子大小相同,揭示了相对的分子同一性。此外,在六个分离物中,使用黄曲霉曲霉EK和ΔA的ITS2引物。 Carneus在琼脂糖凝胶上展示了PCR产物,证实了这两种分离物的实际形态和生化相似性。 flavipes?group。通过对ITS1-5.8S-ITS2区域进行测序,对数据库进行爆破和比对。 flavipes?EK与基因库A具有典型的同一性。 flavipes?孤立。 αA的rRNA序列。 flavipes?EK以登录号JF831014保藏到基因库。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号