scholarly journals Effect of gpd box copy numbers in the gpdA promoter of Aspergillus nidulans on its transcription efficiency in Aspergillus niger

2018 ◽  
Vol 365 (15) ◽  
Author(s):  
He Zhang ◽  
Jian nan Yan ◽  
Hui Zhang ◽  
Tian qi Liu ◽  
Yue Xu ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Nidulans ◽  
Copy Numbers ◽  
Transcription Efficiency ◽  
Gpda Promoter

scholarly journals عزل وتعريف واختبار كفاءة بعض الفطريات في تحلل الهيدروكربون من التربة الملوثة بالنفط

2020 ◽  
Vol 3 (1) ◽  
pp. 78-90
Author(s):  
سعاد محمد خليفة أبوالغيث ◽  
أحلام القمودي محمد زعيط
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Fumigatus ◽  
Aspergillus Nidulans ◽  
Aspergillus Flavus ◽  
Malt Extract Agar ◽  
Malt Extract ◽  
Extract Agar

استهدفت هذه الدراسة عزل بعض أنواع الفطريات من التربة الملوثة بالهيدروكربون بمصفاة الزاوية لتكرير النفط، حيث تم عزل وتعريف بعض الفطريات مثل Rhizopus, Aspergillus fumigatus, Aspergillus niger, Aspergillus flavus, Aspergillus nidulans وأوضحت نتائج هذه الدراسة أن تواجد وتنوع فطر Aspergillus قد تفوق معنويا مقارنة بتواجد وتنوع فطرRhizopus. كما تم في هذه الدراسة اختبار قدرة وكفاءة الفطريات المعزولة على النمو واستغلال المركبات الهيدروكربونية المتمثلة في زيت الحمادة وزيت الشرارة بتركيز 1% و3%، حيث أوضحت النتائج بأن جنس Rhizopus سجل أعلى معدل للنمو على الوسط الغذائي Malt Extract Agar، وسجل كلا من فطر A. fumigatus وفطر A. flavus معدّل النمو القطري أعلى معنويا من النمو القطري لفطرA. niger  وفطر A. nidulans. هذه المعدّلات العالية تدل على إمكانية استخدام الفطريات المعزولة في المعالجة البيولوجية للتربة الملوّثة بالنفط.

scholarly journals Colistin and Isavuconazole Interact Synergistically In Vitro against Aspergillus nidulans and Aspergillus niger

2020 ◽  
Vol 8 (9) ◽  
pp. 1447
Author(s):  
Patrick Schwarz ◽  
Elie Djenontin ◽  
Eric Dannaoui
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Nidulans ◽  
Susceptibility Testing ◽  
Antifungal Susceptibility ◽  
Reference Method ◽  
Important Species ◽  
Agar Diffusion ◽  
Agar Diffusion Assay ◽  
Diffusion Assay

The in vitro interactions of isavuconazole in combination with colistin were evaluated against 55 clinical Aspergillus species isolates belonging to the five most important species (Aspergillus flavus, Aspergillus fumigatus, Aspergillus nidulans, Aspergillus niger, and Aspergillus terreus) responsible for human aspergillosis by a microdilution checkerboard technique based on the European Committee on Antimicrobial Susceptibility Testing (EUCAST) reference method for antifungal susceptibility testing. Selected isolates (A. nidulans, n = 10; A. niger, n = 15) were additionally evaluated by an agar diffusion assay using isavuconazole gradient concentration strips with or without colistin incorporated Roswell Parc Memorial Institute (RPMI) agar. Interpretation of the checkerboard results was done by the fractional inhibitory concentration index. Using the checkerboard method, combination isavuconazole–colistin was synergistic for 100% of the 15 A. nidulans isolates and for 60% of the 20 A. niger isolates. No interactions were found for any of the other isolates. By agar diffusion assay, minimal inhibitory concentrations (MICs) in combination decreased compared to isavuconazole alone for 92% of the isolates. No interactions were found for any A. nidulans isolates, but synergy was observed for 40% of the A. niger isolates. A poor essential agreement of EUCAST and gradient concentration strip MICs at ± 2 log2 dilutions with 0% was obtained. Antagonistic interactions were never observed regardless of the technique used.

Aspergillus Species

2012 ◽  
pp. 153-156
Author(s):  
Shimon Kusne ◽  
Ann E. McCullough
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Fumigatus ◽  
Aspergillus Nidulans ◽  
Microscopic Examination ◽  
Rare Species ◽  
Aspergillus Terreus ◽  
Aspergillus Species ◽  
Pathogenic Species ◽  
Aspergillus Ustus ◽  
Common Pathogen

Aspergillus are ubiquitous molds that grow quickly, forming fluffy colonies in culture. Under microscopic examination an erect conidiophore has a swollen vesicle covered with phialides, which give rise to conidia. In tissue, hyphae predominate. The most common pathogen is Aspergillus fumigatus. Other pathogenic species include Aspergillus flavus, Aspergillus terreus, Aspergillus niger, Aspergillus ustus, and Aspergillus nidulans. There are increasing reports of other rare species causing infection.

scholarly journals Regulation of pentose utilisation by AraR, but not XlnR, differs in Aspergillus nidulans and Aspergillus niger

2011 ◽  
Vol 91 (2) ◽  
pp. 387-397 ◽  
Author(s):  
Evy Battaglia ◽  
Sara Fasmer Hansen ◽  
Anne Leendertse ◽  
Susan Madrid ◽  
Harm Mulder ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Nidulans

scholarly journals Intra and extracellular nuclease production by Aspergillus niger and Aspergillus nidulans

1998 ◽  
Vol 29 (4) ◽  
pp. 282-285
Author(s):  
Adlane V. B. Ferreira
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Nidulans ◽  
Filamentous Fungi ◽  
Cell Free Extract ◽  
Initial Characterization ◽  
Extracellular Nuclease

Intra and extracellular nuclease production by strains of Aspergillus niger and Aspergillus nidulans was estimated using a modified DNAse test agar and cell-free extract assays. Differences in the production of nucleases by A. niger and A. nidulans were observed. These observations suggest that the DNAse test agar can be helpful for a quick screening for some types of nucleases in filamentous fungi. The assays using cell-free extracts can also be useful for initial characterization of other types of nucleases.

Post-genomic insights into the plant polysaccharide degradation potential of Aspergillus nidulans and comparison to Aspergillus niger and Aspergillus oryzae

2009 ◽  
Vol 46 (1) ◽  
pp. S161-S169 ◽  
Author(s):  
Pedro M. Coutinho ◽  
Mikael R. Andersen ◽  
Katarina Kolenova ◽  
Patricia A. vanKuyk ◽  
Isabelle Benoit ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Nidulans ◽  
Aspergillus Oryzae ◽  
Plant Polysaccharide ◽  
Polysaccharide Degradation
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