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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]
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.
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 foliage plant diseases (Agavaceae) List of alfalfa diseases; List of almond diseases; List of anemone diseases; List of apple diseases; 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)
Plant disease epidemiology is the study of disease in plant populations. Much like diseases of humans and other animals, plant diseases occur due to pathogens such as bacteria , viruses , fungi , oomycetes , nematodes , phytoplasmas , protozoa , and parasitic plants . [ 1 ]
Pink disease Corticium salmonicolor. Poria root rot and stem canker Poria hypobrunnea. Purple root rot Helicobasidium compactum. Red leaf spot Phoma theicola. Red root rot Ganoderma philippii Poria hypolateritia [1] = Ceriporiopsis hypolateritia [1] Red rust (alga) [2] Cephaleuros virescens = Cephaleuros parasiticus. Rim blight Cladosporium sp ...
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
As of 2010, this disease is on the USDA APHIS Plant Pathogen Select Agent List. There are provisions for the USDA to treat the introduction of P. philippinensis into the country as an act of bioterrorism because of the possible effect it could have on natural flora and on national agriculture.