Plant virology is a branch of virology that focuses on the study of viruses that infect plants. These viruses can cause a wide range of symptoms in infected plants, such as mosaic patterns on leaves, stunted growth, and reduced crop yield. Plant virologists study the transmission, replication, and interactions of plant viruses, as well as the host responses to viral infection. Understanding plant viruses is crucial for developing strategies to control and prevent viral diseases in crops and plants. This field of research plays a key role in agriculture and plant health, as viruses can have significant impacts on food security and the global economy.