Related topics: plants

Insights into a tiny insect that causes big damage

The western flower thrips—an invasive insect that's not much bigger than a pinhead—takes a huge bite out of agriculture around the world, racking up billions of dollars' worth of damage on a wide range of food, fiber ...

Researchers warn of food-web threats from common insecticides

In light of emerging evidence showing how a commonly used class of insecticides can spread through the environment to pollinators, predators and other insects they are not intended to kill, researchers are warning about the ...

Timing key in understanding plant microbiomes

Oregon State University researchers have made a key advance in understanding how timing impacts the way microorganisms colonize plants, a step that could provide farmers an important tool to boost agricultural production.

Slivers of land could power cheaper, greener nitrogen fertilizers

Nitrogen-based fertilizer contributes to the high yields expected from crops in the developed world, but its high use also damages nearby waters and ecosystems. Conversely, developing countries that most need yield improvements ...

Fungi found in cotton can decrease root knot nematode galling

Texas A&M University scientists found that a surprising number of fungi naturally associated with cultivated cotton were capable of curtailing the negative effects of a plant parasite known as the Southern root knot nematode, ...

Study finds signal cascade that keeps plant stem cells active

Pools of stem cells in the apical meristems of plants are key to continued growth and development. Understanding how these stem cells are maintained and balanced against differentiated cells could lead to methods for increasing ...

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Plant pathology

For the journal, see Plant Pathology (journal).

Plant pathology (also phytopathology) is the scientific study of plant diseases caused by pathogens (infectious diseases) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. Not included are insects, mites, vertebrate or other pests that affect plant health by consumption of plant tissues. Plant pathology also involves the study of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance, how plant diseases affect humans and animals, pathosystem genetics, and management of plant diseases.

The "Disease triangle" is a central concept of plant pathology . It is based on the principle that infectious diseases develop, or do not develop, based on three-way interactions between the host, the pathogen, and environmental conditions.

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