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In 1963 J. E. van der Plank published "Plant Diseases: Epidemics and Control", providing a theoretical framework for the study of the epidemiology of plant diseases. [4] This book provides a theoretical framework based on experiments in many different host pathogen systems and moved the study of plant disease epidemiology forward rapidly ...
Zadoks developed what is arguably the world's first course on plant disease epidemiology with a wet lab and field practical. He pioneered courses in 'Aerobiology', 'Crop Loss', 'Genetics of Resistance' and 'Plant Protection and Society'. The first course formed the basis of the textbook 'Epidemiology and plant disease management'. [4]
Plant disease triangle. Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [10] A disease triangle describes the basic factors required for plant diseases. These are the host plant, the pathogen, and the environment. Any one of these can be modified to control a disease. [11]
Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [1] Organisms that cause infectious disease include fungi , oomycetes , bacteria , viruses , viroids , virus -like organisms, phytoplasmas , protozoa , nematodes and parasitic plants . [ 2 ]
Pseudomonas syringae is a rod-shaped, Gram-negative bacterium with polar flagella.As a plant pathogen, it can infect a wide range of species, and exists as over 50 different pathovars, [2] all of which are available to researchers from international culture collections such as the NCPPB, ICMP, and others.
This includes research areas from epidemiology to diagnosis, therapy to disease prevention, tropical medicine, and related aspects of travel medicine. Published research coverage on patients and populations encompasses the health of marginalized populations: immigrants , refugees , and indigenous peoples .
Phomopsis obscurans is a common fungus found in strawberry plants, which causes the disease of leaf blight. Common symptoms caused by the pathogen begin as small circular reddish-purple spots and enlarge to form V-shaped lesions that follow the vasculature of the plant's leaves.
When the smut invades the host plant it causes hypertrophy – the host's cells increase in size and number. (The fungus also destroys the flowering structures of the plant, so it does not make seed, but the plants can still be propagated asexually by rhizome.) In an environment such as a rice paddy, new sprouts of wild rice are easily infected ...