What are examples of plant diseases?
Common plant diseases include fungal diseases, bacterial diseases, and viral diseases. Fungal diseases: black spot, rust, botrytis blight, powdery mildew. Bacterial diseases: black rot, bacterial canker, soft rot, leaf spot wilt, blight. Symptoms: diseases make plants do “funny” things: wilt even if they are well watered, develop sooty black spots or a white fungus, or grow distorted leaves. Plant diseases tend to affect the whole plant, while insect pests attack individual fruit or leaves.There are a variety of symptoms of plant disease such as spots, dead or dying tissue, fuzzy spores, bumps, bulges, and irregular coloration on the fruits. The disease triangle consists of a susceptible plant, a pathogen, and favorable environmental conditions that allow the pathogen to infect the plant.Fungal Diseases: Black spot, Rust, Botrytis blight, Powdery mildew. Bacterial Diseases: Black rot, Bacterial canker, Soft rot, Leaf spot wilt, Blight. Viral diseases: Mosaic virus, Tomato spotted wilt virus, Potato virus, Tomato yellow leaf curl virus, Cucumber mosaic virus.There are a variety of symptoms of plant disease such as spots, dead or dying tissue, fuzzy spores, bumps, bulges, and irregular coloration on the fruits. The disease triangle consists of a susceptible plant, a pathogen, and favorable environmental conditions that allow the pathogen to infect the plant.
How many plant diseases are there in the world?
There are more than 80,000 plant diseases known worldwide. In fact, all plants are vulnerable to attack by disease. Plant pest the term “plant pest” means any living stage of any of the following that can directly or indirectly injure, cause damage to, or cause disease in any plant or plant product: (a) a protozoan. B) a nonhuman animal. C) a parasitic plant. D) a bacterium.Fungi, bacteria, nematodes, viruses, and parasitic plants can infect and damage various plant parts through their different life cycles and modes of transmission.A pest can be a plant (weed), vertebrate (bird, rodent, or other mammal), invertebrate (insect, tick, mite, or snail), nematode, pathogen (bacteria, virus, or fungus) that causes disease, or other unwanted organism. A disease on the other hand is any disorder that interferes with the normal functions of plants.Plant disease is defined as a condition in plants characterized by the disruption of normal physiological processes, often resulting from the interaction with pathogens that trigger immune responses, including various signals and phytohormones that regulate programmed cell death and innate immunity.
What is an example of a plant disease caused by a virus?
Viruses are difficult to classify and, for lack of anything better, they were given descriptive (and sometimes colorful) names based on the disease they cause—for example, tobacco ring spot, watermelon mosaic, barley yellow dwarf, potato mop top, citrus tristeza, sugar beet curly top, lettuce mosaic, maize dwarf mosaic . The Top 10 list includes, in rank order, (1) Tobacco mosaic virus, (2) Tomato spotted wilt virus, (3) Tomato yellow leaf curl virus, (4) Cucumber mosaic virus, (5) Potato virus Y, (6) Cauliflower mosaic virus, (7) African cassava mosaic virus, (8) Plum pox virus, (9) Brome mosaic virus and (10) Potato virus X, with .