Magnaporthe grisea, also known as rice blast fungus, rice rotten neck, rice seedling blight, blast of rice, oval leaf spot of graminea, pitting disease, ryegrass blast, Johnson spot, neck blast, and Imochi (Japanese:稲熱) is a plant-pathogenic fungus and model organism that causes a serious disease affecting rice. It is now known that M. grisea consists of a cryptic species complex containing at least two biological species that have clear genetic differences and do not interbreed. Complex members isolated from Digitaria have been more narrowly defined as M. grisea. The remaining members of the complex isolated from rice and a variety of other hosts have been renamed Magnaporthe oryzae, within the same M. grisea complex. Confusion on which of these two names to use for the rice blast pathogen remains, as both are now used by different authors.
An appressorium is a specialized cell typical of many fungal plant pathogens that is used to infect host plants. It is a flattened, hyphal "pressing" organ, from which a minute infection peg grows and enters the host, using turgor pressure capable of punching through even Mylar.
Acremonium is a genus of fungi in the family Hypocreaceae. It used to be known as Cephalosporium.
Brasiliomyces malachrae is a species of fungus in the family Erysiphaceae. It is a plant pathogen that grows on Gossypium, Lavatera assurgentiflora, Malachra capitata, Malvastrum coromandelianum, and species of Malvaceae. It is found in South America.
Mycosphaerella is a genus of ascomycota. With more than 10,000 species, it is the largest genus of plant pathogen fungi.
Pyricularia is a genus of fungi which was named by Saccardo in 1880.
Stenella gynoxidicola, formerly Cladosporium gynoxidicola is a species of anamorphic fungi.
Magnaporthiopsis is a genus of ascomycete fungi. It has three species.
Piricaudiopsis rosae is a fungus occurring on dead branches of Rosa chinensis, hence its name. It was first found in a tropical forest in southern China. It differs from other Piricaudiopsis species in conidial morphology and in the proliferation of its conidiogenous cell. The presence or proliferation of the conidiogenous cells and the conidial appendages, as well as the height of its conidia are considered putative phylogenetic characters of this genus.
Piricaudiopsis punicae is a fungus occurring on dead branches of Punica granatum, hence its name. It was first found in a tropical forest in southern China. It differs from other Piricaudiopsis species in conidial morphology and in the proliferation of its conidiogenous cell. The presence or proliferation of the conidiogenous cells and the conidial appendages, as well as the height of its conidia are considered putative phylogenetic characters of this genus.
Acanthostigma filiforme is a species of fungus in the Tubeufiaceae family of fungi. It was isolated from decomposing wood in the Great Smoky Mountains National Park. A. filiforme differs from its cogenerate species by having longer ascospores with more septa.
Chaetomium iranianum is a fungus species in the Chaetomium genus, first isolated from Iran. It shares features such as peridium structure, ascospore morphology and germ pore position with its cogenerates. This species in particular can be characterized by spirally coiled ascomatal hairs and fusiform ascospores.
Chaetomium truncatulum is a fungus species in the Chaetomium genus, first isolated from Iran. It shares features such as peridium structure, ascospore morphology and germ pore position with its cogenerates. This species in particular can be characterized by spirally coiled ascomatal hairs and fusiform ascospores.
The Pyriculariaceae are a family of ascomycete fungi in the order Magnaporthales. It was introduced by S. Klaubauf, M.H. Lebrun & P.W. Crous in 2014.
Chaetomium elatum is a very common and widely distributed saprotrophic fungus of the Chaetomiaceae family of molds which has been found to grow on many different substances all over the world. It was first established by Gustav Kunze after he observed it growing on dead leaves. Its defining features that distinguish it from other Chaetomium species are its extremely coarse terminal hairs and the lemon-shaped morphology of its ascospores. It produces many metabolites with potential biotechnology uses including one with promise against the rice blast disease fungus, Magnaporthe grisea. It shows very little pathogenic ability causing confirmed disease in only a few plant species.
Aspergillus giganteus is a species of fungus in the genus Aspergillus that grows as a mold. It was first described in 1901 by Wehmer, and is one of six Aspergillus species from the Clavati section of the subgenus Fumigati. Its closest taxonomic relatives are Aspergillus rhizopodus and Aspergillus longivescia.
Tritirachium oryzae is a fungus in the Basidiomycota often mistaken for a member of the Ascomycota. it is a mesophile linked recently with human pathogenicity in multiple, rare cases. This species produces airborne spores and is an endophyte of several plant species in North America, South America and in the Middle East.
Ascodesmis nigricans is a coprophilous fungus that could be isolated from the dung of various animals. It was firstly introduced by Philippe Édouard Léon Van Tieghem, a French botanist, and was the type species of the genus Ascodesmis. It is an uncommon species but its development of the fruit body has been the subject of much laboratory study due to the easy nature of its cultivation. Ascodesmis nigricans is not pathogenic to human, animals or plants. This species has world-wide distribution.
Scytalidium ganodermophthorum is an anthroconidial ascomycete fungus in the Scytalidium genus. It is also known by its teleomorph name Xylogone ganodermophthora. It is the cause of yellow rot in lingzhi mushrooms and it is used in spalting as a pigmenting fungi.
Magnaporthe rhizophila is a fungus species in family Magnaporthaceae. These dark mycelial fungi are common pathogens of cereal and grass roots. Rice blast is one disease known to be caused by M. rhizophila and presents with vascular discoloration in the host organism. The fungus lives best in drier humid conditions, explaining why it is most often found in the soils of Australia, South Africa, and the Southeastern United States.
