Antimicrobial Activity of the Rhizospheric Bacillus Species Isolated from Potato (Solanum tuberosum) Organic Farm Soils in the Philippines

The purpose of this study is to determine the potential of rhizospheric bacteria belonging to the genus Bacillus isolated from the organic soil of Solanum tuberosum (potato) as an untapped and promising source of novel antimicrobials to combat infections, particularly multidrug-resistant strains. The rhizospheric Bacillus species were isolated using serial dilution and aerobic cultivation. Hydrolytic exoenzyme production was determined using plate techniques, whereas antimicrobial activity was determined using the cross-streak method and agar-disc diffusion assay. The data indicate that the Bacillus isolates possess antimicrobial property against gram-positive bacterial pathogens. The activities were compared to those of the antibiotic Rifampicin as a control. Notably, several Bacillus isolates inhibited the growth of methicillin-resistant Staphylococcus aureus (MRSA). The top performing Bacillus isolates were identified by 16s rRNA gene sequence analysis, which showed the similarities of the isolates to known soil-associated and plant-growth-promoting species; B. velezensis, B. mojavensis, B. subtilis, B. sonorensis, B. tequilensis, B. clausii, B. amyloliquefaciens, B. altitudinis, and B. siamensis from those sequences available in GENBANK. The present investigation establishes the presence of antagonistic Bacillus species in S. tuberosum's rhizosphere. The findings may form the basis for further investigation of the active compounds produced by the isolates and the mechanisms underlying their antimicrobial activity, while optimizing the culture medium for efficient production of potent antimicrobial compounds to combat infectious agents may further be investigated

Development of an Animal Microbiota Online Web-Based System Basilio: Bacterial Assemblages and Species Identity Library Online

Zoonotic diseases caused by infectious microorganisms transmitted from animals to humans, are becoming a greater threat to global health security. With the massive amount of data on animal microbiota and zoonosis research that recognize the pivotal roles of microorganisms in animal physiology and human health, it is necessary to process and present the data and make them accessible to researchers, educators, and to those involved in microbiota and zoonotic infections studies. The Bacterial Assemblages and Species Identity Library Online (BASILIO) is a web-based bacterial system and database that was created to curate data from various research publications on isolated bacteria from a variety of animal species worldwide. The system focuses on the presentation of animal and bacterial taxonomy, with an emphasis on the abundance of bacterial diversity in the animals studied and the classification of bacteria according to their pathogenicity. The project gathered data on animal microbiota from published studies in reputable peer-reviewed journals. AGILE development approach was utilized to develop the information system iteratively. Unit, system, and acceptability testing were used to execute test plans. The BASILIO web-system was evaluated using ISO 9126 standards and found to be functional, usable, reliable, efficient, portable, maintainable, and usable. The BASILIO in its current state, fills in the need for a database dedicated to fast access to information on pathogenic bacteria found in animals. Future developers are proposed to adopt the BASILIO system and incorporate other data management tools and algorithms to create a more complex and robust system

Antimicrobial Activity of the Rhizospheric Bacillus Species Isolated from Potato (Solanum tuberosum) Organic Farm Soils in the Philippines

The purpose of this study is to determine the potential of rhizospheric bacteria belonging to the genus Bacillus isolated from the organic soil of Solanum tuberosum (potato) as an untapped and promising source of novel antimicrobials to combat infections, particularly multidrug-resistant strains. The rhizospheric Bacillus species were isolated using serial dilution and aerobic cultivation. Hydrolytic exoenzyme production was determined using plate techniques, whereas antimicrobial activity was determined using the cross-streak method and agar-disc diffusion assay. The data indicate that the Bacillus isolates possess antimicrobial property against gram-positive bacterial pathogens. The activities were compared to those of the antibiotic Rifampicin as a control. Notably, several Bacillus isolates inhibited the growth of methicillin-resistant Staphylococcus aureus (MRSA). The top performing Bacillus isolates were identified by 16s rRNA gene sequence analysis, which showed the similarities of the isolates to known soil-associated and plant-growth-promoting species; B. velezensis, B. mojavensis, B. subtilis, B. sonorensis, B. tequilensis, B. clausii, B. amyloliquefaciens, B. altitudinis, and B. siamensis from those sequences available in GENBANK. The present investigation establishes the presence of antagonistic Bacillus species in S. tuberosum's rhizosphere. The findings may form the basis for further investigation of the active compounds produced by the isolates and the mechanisms underlying their antimicrobial activity, while optimizing the culture medium for efficient production of potent antimicrobial compounds to combat infectious agents may further be investigated

Development of an Animal Microbiota Online Web-Based System Basilio: Bacterial Assemblages and Species Identity Library Online

Zoonotic diseases caused by infectious microorganisms transmitted from animals to humans, are becoming a greater threat to global health security. With the massive amount of data on animal microbiota and zoonosis research that recognize the pivotal roles of microorganisms in animal physiology and human health, it is necessary to process and present the data and make them accessible to researchers, educators, and to those involved in microbiota and zoonotic infections studies. The Bacterial Assemblages and Species Identity Library Online (BASILIO) is a web-based bacterial system and database that was created to curate data from various research publications on isolated bacteria from a variety of animal species worldwide. The system focuses on the presentation of animal and bacterial taxonomy, with an emphasis on the abundance of bacterial diversity in the animals studied and the classification of bacteria according to their pathogenicity. The project gathered data on animal microbiota from published studies in reputable peer-reviewed journals. AGILE development approach was utilized to develop the information system iteratively. Unit, system, and acceptability testing were used to execute test plans. The BASILIO web-system was evaluated using ISO 9126 standards and found to be functional, usable, reliable, efficient, portable, maintainable, and usable. The BASILIO in its current state, fills in the need for a database dedicated to fast access to information on pathogenic bacteria found in animals. Future developers are proposed to adopt the BASILIO system and incorporate other data management tools and algorithms to create a more complex and robust system