Taxonomy of Aspergillus section Nigri and section Flavi Genotypic and phenotypic variability among black Aspergilli

2003 ◽  
pp. 407-480
Keyword(s):  
Phenotypic Variability ◽  
Aspergillus Section Nigri ◽  
Black Aspergilli ◽  
Aspergillus Section

scholarly journals Species Identification and Antifungal Susceptibility Patterns of Species Belonging to Aspergillus Section Nigri

2009 ◽  
Vol 53 (10) ◽  
pp. 4514-4517 ◽  
Author(s):  
Laura Alcazar-Fuoli ◽  
Emilia Mellado ◽  
Ana Alastruey-Izquierdo ◽  
Manuel Cuenca-Estrella ◽  
Juan L. Rodriguez-Tudela
Keyword(s):  
Phylogenetic Analysis ◽  
Species Identification ◽  
Antifungal Susceptibility ◽  
Morphological Features ◽  
Correct Classification ◽  
Paradoxical Effect ◽  
Aspergillus Section Nigri ◽  
Susceptibility Patterns ◽  
Aspergillus Section

ABSTRACT A phylogenetic analysis was performed for 34 Aspergillus strains belonging to section Nigri. Molecular methods allowed for the correct classification into three different clades (A. niger, A. tubingensis, and A. foetidus). Correlation with in vitro itraconazole susceptibility distinguished the following three profiles: susceptible, resistant, and showing a paradoxical effect. A number of different species whose morphological features resemble those of A. niger showed unusual MICs to itraconazole that have never been described for the Aspergillus genus.

scholarly journals Conidia survival of Aspergillus section Nigri , Flavi and Circumdati under UV-A and UV-B radiation with cycling temperature/light regime

2015 ◽  
Vol 96 (6) ◽  
pp. 2249-2256 ◽  
Author(s):  
Maria Esther García-Cela ◽  
Sonia Marín ◽  
Monica Reyes ◽  
Vicent Sanchis ◽  
Antonio J Ramos
Keyword(s):  
Light Regime ◽  
Aspergillus Section Nigri ◽  
Cycling Temperature ◽  
Aspergillus Section

Biocontrol as a strategy to reduce the impact of ochratoxin A and Aspergillus section Nigri in grapes

2011 ◽  
Vol 151 (1) ◽  
pp. 70-77 ◽  
Author(s):  
María Lorena Ponsone ◽  
María Laura Chiotta ◽  
Mariana Combina ◽  
Ana Dalcero ◽  
Sofía Chulze
Keyword(s):  
Ochratoxin A ◽  
Aspergillus Section Nigri ◽  
The Impact ◽  
Aspergillus Section

Distribution and Mycotoxigenic Potential of Aspergillus Section Nigri Species in Naturally Contaminated Almonds

2013 ◽  
Vol 76 (4) ◽  
pp. 702-706 ◽  
Author(s):  
JEFFREY D. PALUMBO ◽  
TERESA L. O'KEEFFE
Keyword(s):  
Aspergillus Niger ◽  
Ochratoxin A ◽  
Aspergillus Species ◽  
Aspergillus Awamori ◽  
Aspergillus Tubingensis ◽  
Aspergillus Section Nigri ◽  
Total Potential ◽  
Fumonisin B2 ◽  
Low Levels ◽  
Aspergillus Section

In a previous study, inedible almond pick-out samples were assayed for aflatoxin and aflatoxigenic Aspergillus species. These samples contained high populations of black-spored Aspergillus section Nigri species. To investigate whether these species may contribute to the total potential mycotoxin content of almonds, Aspergillus section Nigri strains were isolated from these samples and assayed for ochratoxin A (OTA) and fumonisin B2 (FB2). The majority of isolates (117 strains, 68%) were identified as Aspergillus tubingensis, which do not produce either mycotoxin. Of the 47 Aspergillus niger and Aspergillus awamori isolates, 34 strains (72%) produced FB2 on CY20S agar, and representative strains produced lower but measurable amounts of FB2 on almond meal agar. No OTA-producing strains of Aspergillus section Nigri were detected. Almond pick-out samples contained no measurable FB2, suggesting that properly dried and stored almonds are not conducive for FB2 production by resident A. niger and A. awamori populations. However, 3 of 21 samples contained low levels (<1.5 ng/g) of OTA, indicating that sporadic OTA contamination may occur but may be caused by OTA-producing strains of other Aspergillus species.

scholarly journals The distribution of the ochratoxin producing species of Aspergillus section Nigri in a vinery and the productive capacity of the isolate strains

2008 ◽  
Vol 58 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Koji YOKOYAMA ◽  
Yuji KAWAKAMI ◽  
Yoshiki ONJI ◽  
Yuko KUMEDA ◽  
Haruo TAKAHASHI
Keyword(s):  
Productive Capacity ◽  
Aspergillus Section Nigri ◽  
Aspergillus Section

scholarly journals Aspergillus Section Nigri in Onions

2014 ◽  
Author(s):  
Rachel Bertoldo ◽  
Marta Hiromi Taniwaki ◽  
Maria Helena Pelegrinelli Fungaro ◽  
Beatriz Thie Iamanaka
Keyword(s):  
Aspergillus Section Nigri ◽  
Aspergillus Section

Ochratoxin a production by four new Aspergillus section Nigri strains isolated from currants of Greek origin

2017 ◽  
Vol 02 (04) ◽  
Author(s):  
Panagiota Markaki ◽  
Eleni Kollia ◽  
Ioanna Pyrri ◽  
Evangelia Kapsanaki-Gotsi
Keyword(s):  
Ochratoxin A ◽  
Aspergillus Section Nigri ◽  
Aspergillus Section

Biodiversity of Aspergillus section Nigri populations in Argentinian vineyards and ochratoxin A contamination

2013 ◽  
Vol 36 (2) ◽  
pp. 182-190 ◽  
Author(s):  
María L. Chiotta ◽  
María L. Ponsone ◽  
Débora M. Sosa ◽  
Mariana Combina ◽  
Sofía N. Chulze
Keyword(s):  
Ochratoxin A ◽  
Aspergillus Section Nigri ◽  
Aspergillus Section
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