Definition and Form of Plant Pathogen
A plant pathogen is an organism that infects plants and causes disease. While some plant pathogens have relatives that are human or animal pathogens, the majority of plant pathogens just damage plants. Plant pathogens limit our capacity to produce food, fibre, and biofuels, as well as harming the economy. Viruses, bacteria, fungi, protozoa, and worms are the five major groups of pathogenic species. In the right-hand column, you'll find a list of some of the most common pathogens in each group. Microorganisms that cause disease are known as pathogens. Viruses, bacteria, fungi, and parasites are all examples of pathogens.