Plant immunity is a branch of research that focuses on understanding how plants defend themselves against pathogens, such as bacteria, viruses, fungi, and parasites. This field explores the complex mechanisms through which plants detect, signal, and respond to invading pathogens to protect themselves from infection. Plant immunity involves both constitutive defenses, which are always present, and inducible defenses, which are activated in response to pathogen attack. Researchers in this area study a wide range of topics, including plant immune receptors, signaling pathways, defense-related genes, and the interplay between plants and pathogens. Understanding plant immunity is crucial for developing sustainable agricultural practices and improving crop resistance to diseases.