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make a table on microorganisms that cause diseases in plants,disease name and symptoms of disease.class 9(mention maximum 13 points) |
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Answer» Answer: Symptoms and signs Bacterial diseases can be grouped into four broad categories based on the extent of damage to plant tissue and the symptoms that they cause, which may include vascular wilt, necrosis, soft rot, and tumours. Vascular wilt results from the bacterial invasion of the plant’s vascular system. The subsequent multiplication and blockage prevents movement (translocation) of water and nutrients through the xylem of the HOST plant. Drooping, wilting, or death of the aerial plant structure may occur; examples include bacterial wilt of sweet corn, alfalfa, tobacco, tomato, and cucurbits (e.g., squash, pumpkin, and cucumber) and black rot of CRUCIFERS. Pathogens can cause necrosis by secreting a toxin (poison). - Symptoms and signs | Britannica The CHARACTERISTICS of several plant diseases caused by bacteria are summarized in the table. Some bacterial diseases of plants. disease ... www.britannica.com › topic › list-of... List of plant diseases | Britannica Fruit SPOT, symptom of plant disease, usually caused by FUNGI and bacteria. A spot is a definite, localized area. Spots frequently enlarge and ... People also ask What are the diseases caused by microorganisms in plants? There is another type of infectious agents: viroids, which are circular RNAs that cause various diseases in plants and animals. ... Table. Viruses Bacteria Fungi Tomato spotted wilt virus Ralstonia solanacearum Botrytis cinerea Tomato yellow leaf curl virus Agrobacterium tumefaciens Puccinia spp. |
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