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A mycorrhiza is a symbiotic association between a green plant and a fungus. The plant makes organic molecules by photosynthesis and supplies them to the fungus in the form of sugars or lipids, while the fungus supplies the plant with water and mineral nutrients, such as phosphorus, taken from the soil. Mycorrhizas are located in the roots of ...
It is known to infect 408 plant species. As a nonspecific plant pathogen, [3] diverse host range and ability to infect plants at any stage of growth makes white mold a very serious disease. The fungus can survive on infected tissues, in the soil, and on living plants. It affects young seedlings, mature plants, and fruit in the field or in storage.
Mycorrhizal network. Nutrient exchanges and communication between a mycorrhizal fungus and plants. White threads of fungal mycelium are sometimes visible underneath leaf litter in a forest floor. Mycorrhizal associations have profoundly impacted the evolution of plant life on Earth ever since the initial adaptation of plant life to land.
Plant pathology or phytopathology is the scientific study of plant diseases caused by pathogens (infectious organisms) and environmental conditions (physiological factors). [ 1] Plant pathology involves the study of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance ...
Rust (fungus) Rusts are fungal plant pathogens of the order Pucciniales (previously known as Uredinales) causing plant fungal diseases . An estimated 168 rust genera and approximately 7,000 species, more than half of which belong to the genus Puccinia, are currently accepted. [ 3] Rust fungi are highly specialized plant pathogens with several ...
Arbuscular mycorrhiza. An arbuscular mycorrhiza ( AM) (plural mycorrhizae) is a type of mycorrhiza in which the symbiont fungus ( AM fungi, or AMF) penetrates the cortical cells of the roots of a vascular plant forming arbuscules. Arbuscular mycorrhiza is a type of endomycorrhiza along with ericoid mycorrhiza and orchid mycorrhiza (not to be ...
Measurements of plant carbon allocation to mycorrhizal fungi have been estimated to be 5 to 20% of total plant carbon uptake, [3] [4] and in some ecosystems the biomass of mycorrhizal fungi can be comparable to the biomass of fine roots. [5] Recent research has shown that mycorrhizal fungi hold 50 to 70 percent of the total carbon stored in ...
Powdery mildew. Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive.
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