Alternaria fungi classifications, characteristics and pathogenesis. Alternaria leaf spot of cabbage adrienne gorny, rachel kreis, and helene dillard department of plant pathology and plantmicrobe biology introduction alternaria leaf spot is a common disease of cabbage caused by the fungal pathogen alternaria brassicicola. Total v v v v v v v vagaricus s ragrocybe n nalternaria s aarthrinium s. Pdf screening of plant growth promoting rhizobacteria isolated. It can also cause upper respiratory tract infections and asthma in humans with compromised immunity. Characteristics and taxonomy of cladosporium fungi. In 2001, numerous ya li pear fruit from china with a disease apparently caused by an alternaria sp. Pdf characteristics and taxonomy of cladosporium fungi. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Distinguishing features alternaria can usually be distinguished from ulocladium by its obclavate conidia with a beak at the apex. Details displaying quimica estructura y dinamica spencer, bodner y rickard esp. Alternaria species are known as major plant pathogens.
Alternaria species have also been implicated in the development of. Puede crecer en paja y madera humeda, alimentos, combustibles fosiles, cosmeticos cremas, pinturas, plasticos, papel y tejidos ropa, alfombras, cuero. Hormodendrum sp d microsporum sp e alternaria sp f allomyces sp 17. It is an opportunistic pathogen on numerous hosts causing leaf spots, rots and blights on many plant parts. Alternaria is a very large and complex genus that encompasses hundreds of species, although specific data are difficult to obtain because of the proliferation of nomenclature of dubious taxonomic validity. Alternaria is a dematiaceous hyphomycete that is frequently involved in human infection. Quimica estructura y dinamica spencer, bodner y rickard.
Alternaria fungi classifications, characteristics and. Entonces, pueden considerarse como sales oxigenadas. Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. Alternaria alternata is a fungus which has been recorded causing leaf spot and other diseases on over 380 host species of plant. Antifungal activity of bacterial species bacillus against alternaria sp. Although usually seen as saprophytic contaminants, alternaria species in particular a. Pdf background and aims this study was aimed at assessing the diversity of putatively diazotrophic. Pdf fungi of the genus cladosporium are common in many areas of the world, they are cosmopolitan organisms. In new york, it is commonly found on many types of crucifers, including kale, brussels. A ubiquitous genus containing common saprophytes in soil and air, and plant pathogens. Isolement, identification et caracterisation des alternaria sp. Several formspecies are found as saprobes on dead and decaying plant parts and in the soil while some formspecies are facultative parasites, infecting a large number of higher plants.
As the pda medium, the growth rate inhibition of alternaria sp. Pdf syzygium cumini is commonly known as jamun in the indian subcontinent. Resultados preliminares conference paper pdf available may 2015 with 252 reads. A majority of alternaria species are saprobic, which means that they are largely involved in the decomposition of various organic matter.
They are also common allergens in humans, growing indoors and causing hay fever or hypersensitivity reactions that sometimes lead to asthma. Quimica estructura y dinamica spencer, bodner y rickard esp. They readily cause opportunistic infections in immunocompromised people such as aids patients there are 299 species in the genus. First report of alternaria alternata causing postharvest fruit rot of syzygium cumini jamun in pakistan. Relaciones narias y sus aplicaciones by keyla salazar conde. The importance of genus alternaria in mycotoxins production and human diseases. Alternaria leaf spot of cabbage cornell university. Habit and habitat of alternaria alternaria is represented by about 50 species. First report of alternaria alternata causing leaf spot of polyalthia longifolia in pakistan.
Alternaria is a large genus that belongs to phylum ascomycota sac fungi. The pathogen produces distinctive bullseye patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. Alternaria is a large genus composed mostly of saprobic or plant pathogen species. Pdf first report of alternaria alternata causing post. Infections caused by alternaria species, and cited primarily as a. Its conidiophores are comparatively less geniculate than those of ulocladium, and its conidia are typically in chains, while those of ulocladium are mostly formed singly or only in very short chains.
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