| Phomopsis asparagi | |
|---|---|
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Sordariomycetes |
| Order: | Diaporthales |
| Family: | Valsaceae |
| Genus: | Phomopsis |
| Species: | P. asparagi |
| Binomial name | |
| Phomopsis asparagi (Sacc.) Grove (1935) | |
| Synonyms | |
Phoma asparagiSacc. (1878) | |
Phomopsis asparagi is a fungal plant pathogen that causes phomopsis blight in asparagus.
Dead arm, sometimes grape canker, is a disease of grapes caused by a deep-seated wood rot of the arms or trunk of the grapevine. As the disease progresses over several years, one or more arms may die, hence the name "dead arm". Eventually the whole vine will die. In the 1970s, dead-arm was identified as really being two diseases, caused by two different fungi, Eutypa lata and Phomopsis viticola.
Phomopsis coffeae is a plant pathogen infecting coffee.
Phomopsis prunorum is a plant pathogen infecting apples.
Phomopsis tanakae is a fungal plant pathogen infecting apples.
Phomopsis arnoldiae is a fungal plant pathogen infecting walnuts.
Phomopsis asparagicola is a plant pathogen that causes Phomopsis blight in asparagus.
Phomopsis cannabina is a plant pathogen infecting hemp.
Phomopsis caricae-papayae is a fungal plant pathogen infecting papayas.
Phomopsis ganjae is a fungal plant pathogen infecting hemp.
Phomopsis javanica is a plant pathogen that causes Phomopsis blight in asparagus.
Phomopsis lokoyae is a fungal plant pathogen infecting Douglas-firs.
Phomopsis mangiferae is a plant pathogen infecting mangoes.
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. Although the fungus infects leaves early in the growing season when the plants are beginning to develop, leaf blight symptoms are most apparent on older plants towards the end of the growing season. The disease can weaken strawberry plants through the destruction of foliage, which results in reduced yields. In years highly favorable for disease development, leaf blight can ultimately lead to the death of the strawberry plants. A favorable environment for the growth and development of the Phomopsis obscurans pathogen is that of high temperature, high inoculum density, a long period of exposure to moisture, and immature host tissue. In the case of disease management, a conjunction of cultural practices is the most effective way of reducing the infection.
Phomopsis perseae is a fungal plant pathogen affecting avocados.
Phomopsis sclerotioides is a fungal plant pathogen infecting cucurbits.
Phomopsis theae is a fungal plant pathogen infecting tea.
Phomopsis elaeagni is a fungal plant pathogen infecting black walnuts.
Phomopsis scabra is a fungal plant pathogen infecting plane trees.
Phomopsisblight of juniper is a foliar disease discovered in 1917 caused by the fungal pathogen Phomopsis juniperovora. The fungus infects new growth of juniper trees or shrubs, i.e. the seedlings or young shoots of mature trees. Infection begins with the germination of asexual conidia, borne from pycnidia, on susceptible tissue, the mycelia gradually move inwards down the branch, and into the main stem. Management strategies mainly include removing and destroying diseased tissue and limiting the presence of moisture on plants. Junipers become resistant to infection as they mature and the young yellow shoots turn dark green. Preventive strategies include planting only resistant varieties and spraying new growth with fungicide until plants have matured.
The mycotoxin phomoxanthone A, or PXA for short, is a toxic natural product that affects the mitochondria. It is the most toxic and the best studied of the naturally occurring phomoxanthones. PXA has recently been shown to induce rapid, non-canonical mitochondrial fission by causing the mitochondrial matrix to fragment while the outer mitochondrial membrane can remain intact. This process was shown to be independent from the mitochondrial fission and fusion regulators DRP1 and OPA1.
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