Kadaikunnan Shine, Alharbi Naiyf S, Khaled Jamal M, Alobaidi Ahmed S, Rajivgandhi Govindan Nadar, Ramachandran Govindan, Gnanasekaran Chackaravarthi, Chelliah Chenthis Kanisha, Alanzi Khalid F, Manoharan Natesan
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Department of Marine Science, Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India.
Saudi J Biol Sci. 2021 Nov;28(11):6057-6062. doi: 10.1016/j.sjbs.2021.06.061. Epub 2021 Jun 25.
Based on the excellent nutrient level, the current study was focused on isolation and anti-bacterial activity of the from marine mangrove soil samples. As result, 10 different strains of strains were identified on isolation agar plates. The identified strains were shown with white, clear, uncontaminated well matured spore producing ability. Based on the initial observation, the isolated colonies were . The partially extracted crude compound shown excellent anti-bacterial activity against and with 15 mm and 13 mm zone of inhibitions were observed at 500 μL concentrations. The minimum inhibition concentration result was also confirmed the 500 μL concentration against both the tested concentration with high inhibition rate. Then, the intracellular damages, decreased cell growth of the crude actinomycetes extract treated bacterial strains were clearly observed by confocal laser scanning electron microscope. The extracellular damages of bacterial cell wall and shape of the both the pathogens were clearly shown by scanning electron microscope. Therefore, all the results were clearly supported to the partially extracted crude compound and it has excellent anti-bacterial activity against tested multi drug resistant bacteria.
基于良好的营养水平,当前研究聚焦于从海洋红树林土壤样本中分离[具体菌株名称未给出]及其抗菌活性。结果,在分离琼脂平板上鉴定出10种不同的[具体菌株名称未给出]菌株。鉴定出的菌株表现出白色、清晰、无污染且具有良好的产孢能力。基于初步观察,分离出的菌落为[具体特征未给出]。部分提取的粗提化合物对[具体细菌名称未给出]和[具体细菌名称未给出]显示出优异的抗菌活性,在500μL浓度下观察到抑菌圈分别为15mm和13mm。最低抑菌浓度结果也证实了500μL浓度对两种测试菌具有高抑制率。然后,通过共聚焦激光扫描电子显微镜清楚地观察到经粗提放线菌提取物处理的细菌菌株的细胞内损伤和细胞生长减少。扫描电子显微镜清楚地显示了两种病原体的细菌细胞壁的细胞外损伤和形状。因此,所有结果都明确支持了部分提取的粗提化合物,它对测试的多重耐药细菌具有优异的抗菌活性。