Bacillus is a genus of rod-shaped bacteria that are commonly found in various environments, including soil and water. These bacteria are known for their ability to form spores, which allows them to survive extreme conditions, such as heat and drought. Some species of Bacillus are beneficial and used in agriculture and biotechnology, while others can cause diseases in plants and animals. Many Bacillus species are important in the production of enzymes and antibiotics. For example, Bacillus subtilis is often used in fermentation processes and as a probiotic. Overall, Bacillus plays a significant role in both ecological systems and industrial applications.