scholarly journals Nattrassia mangiferae: An uncommon agent of onychomycosis

2015 ◽  
Vol 71 (3) ◽  
pp. 297-299 ◽  
Author(s):  
Partha Roy ◽  
Puneet Bhatt
Keyword(s):  
Nattrassia Mangiferae

Dermatomycoses Caused by Nattrassia Mangiferae in São Paulo, Brazil

2004 ◽  
Vol 157 (3) ◽  
pp. 273-276 ◽  
Author(s):  
P. Godoy ◽  
E. Reyes ◽  
V. Silva ◽  
F. Nunes ◽  
J. Tomimori-Yamashita ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Nattrassia Mangiferae

scholarly journals First Report of Multiple Species of the Botryosphaeriaceae Causing Bot Canker Disease of Indian Laurel-Leaf Fig in California

Plant Disease ◽  
2012 ◽  
Vol 96 (3) ◽  
pp. 459-459 ◽  
Author(s):  
J. S. Mayorquin ◽  
A. Eskalen ◽  
A. J. Downer ◽  
D. R. Hodel ◽  
A. Liu
Keyword(s):  
Los Angeles ◽  
Fungal Pathogens ◽  
Southern California ◽  
Morphological Characteristics ◽  
Vascular Lesion ◽  
Site Location ◽  
Internal Transcribed Spacer Region ◽  
First Report ◽  
Nattrassia Mangiferae ◽  
Β Tubulin

Indian laurel-leaf fig (Ficus microcarpa L.) is a commonly used indoor and outdoor ornamental tree. F. microcarpa is most frequently encountered as lining city streets, especially in warmer southern California climates. A disease known as ‘Sooty Canker,' caused by the fungus Nattrassia mangiferae (Syd. & P. Syd) B. Sutton & Dyko, is particularly devastating on F. microcarpa. Disease symptoms are characterized by branch dieback, crown thinning, and if the disease progresses to the trunk, eventual tree death (2). Recent taxonomic revisions have renamed Nattrassia mangiferae as Neofusicoccum mangiferae (Syd. & P. Syd.) Crous, Slippers & A. J. L. Phillips (1). An initial survey conducted during the spring of 2011 across four cities in Los Angeles County included, Culver City, Lakewood, Santa Monica, and Whittier. Five symptomatic branches per city were collected from trees showing branch cankers and dieback. Pieces of symptomatic tissue (2 mm2) were plated onto one-half-strength potato dextrose agar. Most isolates initially identified by morphological characteristics, such as growth pattern, speed of growth, and colony color, resembled those in the Botryosphaeriaceae (4). Two representative isolates from each site location were sequenced. Sequences obtained from amplification of the internal transcribed spacer region (ITS1-5.8rDNA-ITS2) and the β-tubulin gene were compared in a BLAST search in GenBank. Results identified isolates as Botryosphaeria dothidea (identity of 99% to EF638767 and 100% to JN183856.1 for ITS and β-tubulin, respectively); Neofusicoccum luteum (100% to EU650669 and 100% to HQ392752); N. mediterraneum (100% to HM443605 and 99% to GU251836); and N. parvum (100% to GU188010 and 100% to HQ392766) and have been deposited in GenBank with the following accession numbers: JN543668 to JN543671 (ITS) and JQ080549 to JQ080552 (β-tubulin). Pathogenicity tests were conducted in the greenhouse on 6-month-old F. microcarpa with one isolate from each previously listed fungal species. Five plants per isolate were stem-wound inoculated with mycelial plugs and wrapped with Parafilm. Uncolonized agar plugs were used as a control. Inoculations were later repeated a second time in the same manner for a total of 10 plants per isolate. Plants were observed for 6 weeks and destructively sampled to measure vascular lesion lengths. Mean vascular lesion lengths were 26, 22, 54, and 46 mm for B. dothidea, N. luteum, N. mediterraneum, and N. parvum, respectively. The mean lesion lengths for all isolates were significantly different (P = 0.05) from the control. Each species was consistently recovered from inoculated plants, except the control, thus fulfilling Koch's postulates. To our knowledge, this is the first report on the pathogenicity of multiple Botryosphaeriaceae species causing branch canker and dieback on F. microcarpa in California. These results are significant since trees along sidewalks in southern California are often crowded and undergo extensive root and branch pruning and some Botryosphaeriaceae spp. are known to enter its host through wounds caused by pruning or mechanical injury (2,3). Further sampling is imperative to better assess the distribution of these canker-causing fungal pathogens on F. microcarpa. References: (1) P. W. Crous et al. Stud. Mycol. 55:235, 2006. (2) D. R. Hodel et al. West. Arborist 35:28, 2009. (3) V. McDonald et al. Plant Dis. 93:967, 2009. (4) B. Slippers et al. Fungal Biol. Rev. 21:90, 2007.

scholarly journals First Report of Nattrassia mangiferae Root and Stem Rot of Cassava in West Africa

Plant Disease ◽  
1997 ◽  
Vol 81 (11) ◽  
pp. 1332-1332 ◽  
Author(s):  
W. Msikita ◽  
J. S. Yaninek ◽  
M. Ahounou ◽  
H. Baimey ◽  
R. Fagbemissi
Keyword(s):  
West Africa ◽  
Plant Height ◽  
Hot Water ◽  
Day Length ◽  
Stem Rot ◽  
Fusarium Spp ◽  
First Report ◽  
Cassava Root ◽  
Nattrassia Mangiferae ◽  
Number Of Shoots

During part of the dry season in 1996 (November to December), surveys were made for incidence of root and stem rot in 99 fields of cassava (Manihot esculenta Crantz) randomly selected between latitudes 6°36′N and 7°49′N in Benin (79 fields) and Nigeria (20 fields). Root rot was observed in 65 fields in Benin and 15 fields in Nigeria. Disease incidence ranged from 0 to 54%. A total of 201 samples of wilted and/or dead plants were collected for laboratory analysis. Infected root and stem portions (0.5 to 1 cm) were cut out, surface disinfested (10 min) in 10% bleach (0.6% sodium hypochlorite), rinsed in sterilized distilled water, and cultured on potato dextrose agar acidified to pH 4.5 with 0.4% (vol/vol) lactic acid. Cultures were incubated at 25°C, under 12-h day length provided by cool-white fluorescent lamps. After 1 week, mycelia, conidiophores, and conidia were observed at ×30 to ×40 magnification under a compound microscope. Out of the 169 symptomatic samples collected from Benin, nine fungal genera were isolated: Aspergillus spp. (1% of fungi observed), Botryodiplodia theobromae Pat (7.7%), Fusarium spp. (11.8%), Macrophomina phaseolina (Tassi) Goidanich (14.2%), Nattrassia mangiferae (Syd. & P. Syd.) B. Sutton & Dyko (56.2%), Penicillium spp. (0.6%), Pythium spp. (2.9%), Rhizopus spp. (1.7%), and Trichoderma spp. (2.4%). One percent of the fungi isolated did not sporulate in culture and were not identified. Out of the 32 samples collected from Nigeria, four fungal genera were identified: N. mangiferae (40.6%), B. theobromae (28.1%), M. phaseolina (18.7%), and Fusarium spp. (12.5%). Since N. mangiferae was isolated with the highest frequency, its pathogenicity was tested on cassava (cultivars Agric, Ben 86052, Dessa 88, Tchukunochi, and TMS 30572). Two weeks prior to the experiment, inocula for pathogenicity tests were prepared by incubating 5-mm-diameter mycelial plugs of N. mangiferae with 500 ml of autoclaved rice seed for 10 days at 25°C, followed by air drying in a laminar flow hood for 2 days. Five 30-cm-long stem portions were cut from healthy plants of each cassava cultivar, surface disinfested in hot water (52°C, 5 min), and transplanted into sterilized (autoclaved, 1 h) sand in 1-liter pots to which 10 ml of the N. mangiferae-colonized rice inoculum had been added. There were five control stems for each cultivar, similarly treated, but not inoculated. Plants were maintained in a greenhouse under natural light at 28 to 30°C. Thirty days after planting, plant height, lesion length, and number of shoots and roots were recorded. For all five cultivars, N. mangiferae significantly (P < 0.05) reduced plant height and number of shoots and roots, compared with control plants. Lesions (3 to 15 cm long) formed on the lower stem portions of all inoculated plants, resulting in variable degrees of wilting of the infected plants. Two of the cultivars (Agric and Ben 86052) died 3 weeks after planting. Control plants remained asymptomatic. N. mangiferae was consistently reisolated from infected plants, and the identification was independently confirmed by the International Mycological Institute, Surrey, UK. Scytalidium sp., a synamorphic state of N. mangiferae (2), was reported to cause up to 85% cassava root yield loss in South America (1). This is the first report of N. mangiferae causing cassava root and stem rot in West Africa. References: (1) Anonymous. Annu. Rep. Cassava Prog., CIAT Working Doc. No. 116:97, 1992. (2) B. C. Sutton and B. J. Dyko. Mycol. Res. 93:466, 1989.

scholarly journals Morphological and Molecular Identification of Fungi Causing Canker Disease on Melia Azidarch Trees in Some Regions of Mosul Provinces, Iraq

2021 ◽  
Vol 910 (1) ◽  
pp. 012116
Author(s):  
Anwer Noori Alkhero ◽  
Zainab Waadallah Rassem
Keyword(s):  
Molecular Diagnosis ◽  
Molecular Identification ◽  
First Record ◽  
Alternaria Brassicicola ◽  
Morphological Identification ◽  
University Campus ◽  
Canker Disease ◽  
Identification Of Fungi ◽  
Nattrassia Mangiferae ◽  
High Pathogenic

Abstract The aim of this study was to identify the fungi associated with canker disease on Melia azidarch trees inside Mosul University campus and the presidential palaces regions in Mosul Province, Iraq. Results of isolation showed the presenting of the fungi (Nattrassia mangiferae, Neoscylitidium dimidiatum Penz., Fusarium graminearium Schw., Alternaria brassicicola Schw., Aspergillus sp. and Penecillium sp.), which accompanied with the samples displayed cankering symptoms during the period from April to December/2020, the maximum of dominance was 85% for the fungus Neoscylitidium dimidiatum in August, while the lowest was 49% in April for the same year, followed by Fusarium graminearium with 38% in December, while the lowest percentage was 4% in October, then Alternaria brassicicola Schw. was 25% in April and the lowest value was 0% in August, followed by Aspergillus sp. and Penecillium sp. with low isolation percentages the maximum of which 25% and the lowest is 0% in August. When studying the pathogenicity of the isolated fungi, the results showed a high pathogenic effect in terms the length, diameter and the area of cankers symptom. Based on the results of the molecular diagnosis, the morphological identification was confirmed and it was clear that Fusarium austroamericanum, detection is considered the first record of this fungus in Iraq Melia azidarch trees.

scholarly journals Onychomycosis caused by Scytalidium dimidiatum. Report of two cases. Review of the taxonomy of the synanamorph and anamorph forms of this coelomycete

1999 ◽  
Vol 41 (5) ◽  
pp. 318-323 ◽  
Author(s):  
Carlos da Silva LACAZ ◽  
Amélia Dias PEREIRA ◽  
Elisabeth Maria HEINS-VACCARI ◽  
Luiz Carlos CUCÉ ◽  
Cristiane BENATTI ◽  
...  
Keyword(s):  
Type Species ◽  
Positive Patient ◽  
Hiv Positive ◽  
Fungal Taxonomy ◽  
Separate Species ◽  
Conidial State ◽  
The Subject ◽  
Nattrassia Mangiferae ◽  
Scytalidium Lignicola ◽  
Over Time

The authors report two cases of onychomycosis in the dystrophic form, one of them involving an HIV-positive patient, provoked by Scytalidium dimidiatum, previously called Scytalidium lignicola. The subject is reviewed from the taxonomic viewpoint, considering the anamorph Hendersonula toruloidea as a synonym of Nattrassia mangiferae, and having Scytalidium dimidiatum as the major synanamorph. According to many mycologists, Scytalidium hyalinum may be a separate species or a hyaline mutant of Scytalidium dimidiatum. Scytalidium lignicola Pesante 1957 was considered to be the type-species of the genus by ELLIS (1971)13 and later to be a "conidial state" of Hendersonula toruloidea by the same author, today known as Nattrassia mangiferae. The microorganism lives only on the roots of certain plants (mainly Platanus and Pinus). It produces pycnidia and is not considered to be a pathogen, although it is considered as a possible emerging agent capable of provoking opportunistic fungal lesions. The importance of this topic as one of the most outstanding in fungal taxonomy, so likely to be modified over time, as well as its interest in the field of dermatologic mycology, are emphasized.

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