Bacterial diversity of 14 sites of the East China Sea was investigated by culture-dependent methods. The impact of human activities on marine bacteria was primarily studied and characteristics of bacteria communities ...Bacterial diversity of 14 sites of the East China Sea was investigated by culture-dependent methods. The impact of human activities on marine bacteria was primarily studied and characteristics of bacteria communities in different areas were analyzed. A total of 396 strains were obtained. These strains belong to 4 phyla, 9 classes and 146 species according to 16S rDNA sequences alignment. For 32 strains, the 16S rDNA sequences similarities between isolated strains and their most closely related species were lower than 98%. The result indicated that there are abundant microbial diversity and a large number of unknown microbial resources in the East China Sea. Isolated strains were dominated byy-proteobacteria （64%）, ct-proteobacteria （18%） and Firmicutes （15%）. Actinobacteria and Bacteroidetes were less than 3%. Microbial community composition, diversity and abundance among areas with varies distances from land were different. The far the regions from the land, the lower the Shannon index （H＇） and the Margalef index （DMg） values were.展开更多
猪支原体肺炎（Mycoplasmal pneumoniae of swine,MPS）是由猪肺炎支原体（Mycoplasma hyopneumonia,Mhp）引起的一种慢性呼吸道传染病,该病给养猪业造成了巨大的经济损失。疫苗接种是目前减轻或预防由猪肺炎支原体感染引发经济损失的...猪支原体肺炎（Mycoplasmal pneumoniae of swine,MPS）是由猪肺炎支原体（Mycoplasma hyopneumonia,Mhp）引起的一种慢性呼吸道传染病,该病给养猪业造成了巨大的经济损失。疫苗接种是目前减轻或预防由猪肺炎支原体感染引发经济损失的主要手段。对猪支原体肺炎基因工程疫苗近年来的研究进展进行综述,主要包括黏附因子相关疫苗、核苷酸还原酶相关疫苗、DNA疫苗、表达文库疫苗和肽疫苗等,最后对基因工程疫苗研究工作的继续开展提供了建议。展开更多
文摘Bacterial diversity of 14 sites of the East China Sea was investigated by culture-dependent methods. The impact of human activities on marine bacteria was primarily studied and characteristics of bacteria communities in different areas were analyzed. A total of 396 strains were obtained. These strains belong to 4 phyla, 9 classes and 146 species according to 16S rDNA sequences alignment. For 32 strains, the 16S rDNA sequences similarities between isolated strains and their most closely related species were lower than 98%. The result indicated that there are abundant microbial diversity and a large number of unknown microbial resources in the East China Sea. Isolated strains were dominated byy-proteobacteria （64%）, ct-proteobacteria （18%） and Firmicutes （15%）. Actinobacteria and Bacteroidetes were less than 3%. Microbial community composition, diversity and abundance among areas with varies distances from land were different. The far the regions from the land, the lower the Shannon index （H＇） and the Margalef index （DMg） values were.
文摘猪支原体肺炎（Mycoplasmal pneumoniae of swine,MPS）是由猪肺炎支原体（Mycoplasma hyopneumonia,Mhp）引起的一种慢性呼吸道传染病,该病给养猪业造成了巨大的经济损失。疫苗接种是目前减轻或预防由猪肺炎支原体感染引发经济损失的主要手段。对猪支原体肺炎基因工程疫苗近年来的研究进展进行综述,主要包括黏附因子相关疫苗、核苷酸还原酶相关疫苗、DNA疫苗、表达文库疫苗和肽疫苗等,最后对基因工程疫苗研究工作的继续开展提供了建议。
