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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 ]
List of apricot diseases; List of foliage plant diseases (Araceae) List of foliage plant diseases (Arecaceae) List of foliage plant diseases (Araliaceae) List of foliage plant diseases (Araucariaceae) List of foliage plant diseases (Asclepiadaceae) List of asparagus diseases; List of avocado diseases; List of azalea diseases
Plant disease triangle. Epidemiology is the study of factors affecting the outbreak and spread of infectious diseases. [11] 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. [12]
This category includes economically significant plant diseases and the organisms that cause them including, fungi, bacteria, protists and viruses. For more information on plant pathology see phytopathology. For insects that transmit plant pathogens see Insect vectors of plant pathogens.
F. List of Ficus diseases; List of flax diseases; List of foliage plant diseases; List of foliage plant diseases (Acanthaceae) List of foliage plant diseases (Agavaceae)
Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. [1] Accordingly, many diseases that primarily exhibit this symptom are called blights. Several notable examples are: [citation needed]
For example, the leafhopper Macrosteles quadrilineatus laid 30% more eggs on plants expressing SAP11 transgenically than control plants and 60% more eggs on plants infected with AY-WB. [23] Phytoplasmas cannot survive in the external environment and are dependent upon insects such as leafhoppers for transmission to new (healthy) plants.
They can cause plant disease and can infect a broad range of hosts in several monocot and dicot plant families. [3] Smuts are cereal and crop pathogens that most notably affect members of the grass family and sedges . Economically important hosts include maize, barley, wheat, oats, sugarcane, and forage grasses.