It is important to know the difference between this and say, fusarium spp of fungus. This mold has been known to cause onychomycosis, ocular keratitis, sinusitis, mycetoma, pneumonia, endocarditis, cerebral abscess, and disseminated infection. The genus curvularia consists of more than 40 species. Curvularia is a hyphomycete fungus which is a facultative pathogen, or beneficial partner of many plant species and common in soil. Curvularia is a species of mold that relate mostly to subtropical and tropical plant parasites however, three ubiquitous species have been recovered from human infections, principally from cases of mycotic keratitis. However, more than 10 species of this genus have been reported to cause opportunistic. Department of agriculture usda prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and. Current science perspectives 24 2016 95104 current science perspectives 24 2016 95104 assessment of the antimicrobial and antioxidant activities of the secondary metabolites produced by pure cultured curvularia lunata, aspergillus parasiticus and mucor spp.
Little is known about these pathogens and whether they are primary or secondary to leaf spot development. Most are far more common than black mold in homes and they can make you ill. This genus of filamentous fungi colonizes soil and vegetation and spreads by airborne spores. Curvularia is a prevalent member of these darkly pigmented fungi that received its current name in 19338 and that is related to the sexual teleomorph cochliobolus. Most commonly found on low cut turf grasses like golf and bowling greens. Curvularia species are important phytopathogens reported worldwide. As well as being a contaminant, curvularia may cause infections in both humans and animals 1219, 1295, 1806, 2144. Curvularia species, common inhabitants of dead plant material, are causative agents of fungal keratitis, sinusitis, onychomycosis, black grain mycetoma. Soil compaction and excessive levels of nitrogen and thatch. Some of the 40 curvularia species are phytopathogens. Curvularia leaf spot occurs in areas that experience prolonged leaf wetness for several consecutive days. The anamorph of this fungus is known as curvularia lunata, while cochliobolus lunatus denotes the teleomorph or sexual state. Culvaria species, infection, treatment and removal mold. Morphological and molecular characterization of curvularia.
Pdf five curvularia strains isolated from diseased leaves of lemongrass cymbopogon citratus in guangxi province, china, were examined. Individual leaves initially show yellow and green dappled patterns that extend downwards from the leaf tip. Among eye infections, the involvement of curvularia spp. Natural habitats plant saprobe and pathogen to cereal plants soil suitable substrates in the indoor environment paper wood products water activity unknown mode of dissemination wind allergenic potential type i asthma and hay fever a relatively common cause of allergic fungal sinusitis. Most kinds of mold grow and spread quickly, but according to the university of adelaide website, this particular strain of mold grows especially fast. Curvularia leaf spot ppfsagc09 curvularia leaf spot has a broad host range, and other grass species can play a role in disease development in other countries. Gray snow mold caused by typhula spp apply in sufficient water to ob tain adequate coverage 2 to 10 gallons per 1,000 square feet.
Previously curvularia lunata was the most frequently reported clinical species, however other species, such as c. This particular type of mold is known to cause corneal infections. The clinical importance of the genus curvularia and the former genus bipolaris were previously discussed in the literature separately from each other liu and gray 2011. The fungal genus curvularia includes numerous plant pathogens and some emerging opportunistic pathogens of humans. Assessment of the antimicrobial and antioxidant activities. Curvularia is a hyphomycete associated with over 60 host genera manamgoda et al. New species and records of bipolaris and curvularia. Effects of temperature on mycelial growth sporulation and spore germination of curvularia spp. Bioactive secondary metabolites from new endophytic fungus. Evaluation of pathogenicity of bipolaris and curvularia.
Pdf diseases of cymbopogon citratus poaceae in china. Curvularia leaf spot disease of foliage andor roots. Curvularia is a necrotizing fungus, meaning the plant basically consumes itself from within. Curvulariafavorable response to oral itraconazole therapy. Evaluation of curvularia lunata as an biological control agent in major weeds. The ctnsensus of opinion seems to be that curvularia will invade turf that is already weakened and become a secondary pathogen. An wikimedia commons mayda media nga nahahanungod han. General information about curvularia anamorphic genus 1curvg eppo global database. Oil palm, curvularia oryzae, bologocal control, atagonistic abstract. Curvularia diseases produce irregularly shaped patches of thinned turf, often coalescing to affect larger areas.
Cochliobolus lunatus is a fungal plant pathogen that can cause disease in humans and other animals. The fungus is an excellent saprophyte, meaning it exists or persists in dead and dying tissue. On the basis of the literature, this paper is the first to report c. Biodiesel, bioflocculant and biosorbent from the fungal. Allergic bronchopulmonary disease caused by curvularia has been reported 2. Based on these morphological characters, the fungus was identified as curvularia spicifera bainier boedijn. Studies on the discoloration of rice kernels caused by fungi. Biodiesel, bioflocculant and biosorbent from the fungal curvularia sp. Curvularia definition of curvularia by medical dictionary. A phylogenetic analysis of the genera bipolaris and curvularia has resulted in a realignment of several species. The term black mold also toxic black mold is not scientific but is widely used by the media to usually reference stachybotrys molds. Isolation and molecular identification of curvularia lunatacochliobolus lunatus causal agent of leaf spot disease of cocoa cuervoparra. Most species of curvularia are facultative pathogens of soil, plants, and cereals in tropical or subtropical areas, while the remaining few are found in temperate zones.
Recent studies have shown that morphological identification does not correlate with molecular identification manamgoda et al. Objective description of variety zoysiagrass zoysia. Identification of curvularia lunata by polymerase chain. Thus, the strains examined are found to represent a. It has ample cultivation in all the states under diversified agroecosystems, upto an altitude of 2200 m above mean sea level a. These fungi are primarily of interest in their role as plant pathogens, as they can cause severe damage to a variety of crops. The majority of curvularia species exist as grass pathogens or as saprobes occurring on plant material, dung and soil. Curvularia is a mold which is associated with allergy in the literature and frequently reported in mold spore counts. On the fruit tree and plant guard concentrate label it states stink bug spp. Dematiaceous hyphomycete producing sympodial, pale brown, cylindrical or slightly curved phragmoconidia, with one of the cent. To date, however, only five known reports of endophthalmitis caused by curvularia spp. Curvularia is a fungal genus primarily native to tropical and subtropical regions, although some species live in temperate zones. The symptoms are described and contrasted with those of the other locally abundant leaf spot, caused by helminthosporium maydis.
Pdf members of the genus curvularia including species formerly classifi ed as bipolaris spp. Evaluation of curvularia lunata as an biological control. A phylogenetic and taxonomic reevaluation of the bipolaris cochliobolus curvularia complex dimuthu s. Pdf clinical importance of the genus curvularia researchgate. Curvularia leaf spot is caused by several fungi in the genus curvularia. Most curvularia are found in tropical regions, though a few are found in temperate zones. Inoculation with conidial suspensions or mycelial transfers through wounded ferns were more. Over the last decades, endophytic fungi represent a new source of pharmacologically active secondary metabolites based on the underlying assumption that they live symbiotically within their plant host. The production of rice comprehended, 87 million tonnes during the year 20032004 from a cultivated area of 44. Some people may experience hay fever, asthma and or allergic fungal sinusitis. Hence, curvularia lunata can be considered as a probable agent for the biological control of alisma plantagoaquatica, echinochloa spp. What would be a simple way to measure prime source chlorothalonil 82.
Isolation and molecular identification of curvularia. Curvularia is a hyphomycete found in plants and soil of tropical and temperate countries. The fungus showed a highest homology to curvularia sp. Curvularia is a genus of fungi that mostly consists of plant pathogens, although several of its species can be harmful to humans as well. The genus curvularia contains about 80 species, which are mostly soil or plant pathogens. Abdelhaleem environmental biotechnology department, genetic engineering and biotechnology research institute gebri, city of scientific research and technological applications srtacity, alexandria, egypt. Household mold symptoms are caused by several common types of mold in homes. Curvularia species are also the most common dematiaceous molds isolated from patients with corneal phaeohyphomycosis 19, 20. However, the role of these hosts in curvularia leaf spot development in the united states is still unknown. These are curvularia lunata, curvularia pallescens and curvularia geniculata curvularia lunata. Chemical and biological control of curvularia oryzae leaf. It may cause corneal infections, mycetoma and infections in immune compromised hosts.
Health concerns with curvularia is it a potential allergen. Curvularia is a hyphomycete fungus which is a facultative pathogen of many plant species. How long do you wait to apply gordons trimec classic broadleaf herbicide after reseeding. First report of curvularia eragrostidis leaf spot on. We report a case of fungal infection caused by curvularia geniculata c. Morphological and molecular characterization of curvularia lunata. Apply 512 fluid ounces of lesco manicure 6fl per 1,000 square fee t of turf area 15 pints per acre. In the present study, a new endophytic fungus was isolated from rauwolfia macrophylla, a medicinal plant from cameroon. Curvularia may be found in almost any grass debris, even if the turf is healthy. Nail and nail bed fungal infection are common, and dematiaceous molds are occasionally encountered. Curvularia is another common household mold known to cause mold symptoms in humans. Curvularia pallescens boedijn hyphomycetes is redescribed with the aid of a scanning electron microscope, and the optimal cultural conditions for growing this fungus are discussed. It is associated with open globe injuries and is a common cause of secondary fungal keratitis after diagnostic aspiration.43 815 676 1306 717 1338 1397 22 110 488 451 417 1292 199 306 1576 562 814 1375 399 1525 287 119 132 1357 1080 199 252 634 548 3 175 1167 1153 566 49 726 1551 1118 1309 1078 170 355 1119 1247 210 207 204