Advertisement

Topics

Aspergillus niger contains the cryptic phylogenetic species A. awamori.

Summary of "Aspergillus niger contains the cryptic phylogenetic species A. awamori."

Aspergillus section Nigri is an important group of species for food and medical mycology, and biotechnology. The Aspergillus niger 'aggregate' represents its most complicated taxonomic subgroup containing eight morphologically indistinguishable taxa: A. niger, Aspergillus tubingensis, Aspergillus acidus, Aspergillus brasiliensis, Aspergillus costaricaensis, Aspergillus lacticoffeatus, Aspergillus piperis, and Aspergillus vadensis. Aspergillus awamori, first described by Nakazawa, has been compared taxonomically with other black aspergilli and recently it has been treated as a synonym of A. niger. Phylogenetic analyses of sequences generated from portions of three genes coding for the proteins β-tubulin (benA), calmodulin (CaM), and the translation elongation factor-1 alpha (TEF-1α) of a population of A. niger strains isolated from grapes in Europe revealed the presence of a cryptic phylogenetic species within this population, A. awamori. Morphological, physiological, ecological and chemical data overlap occurred between A. niger and the cryptic A. awamori, however the splitting of these two species was also supported by AFLP analysis of the full genome. Isolates in both phylospecies can produce the mycotoxins ochratoxin A and fumonisin B(2), and they also share the production of pyranonigrin A, tensidol B, funalenone, malformins, and naphtho-γ-pyrones. In addition, sequence analysis of four putative A. awamori strains from Japan, used in the koji industrial fermentation, revealed that none of these strains belong to the A. awamori phylospecies.

Affiliation

Institute of Sciences of Food Production (ISPA), National Research Council (CNR), Via G. Amendola 122/O, 70126 Bari, Italy.

Journal Details

This article was published in the following journal.

Name: Fungal biology
ISSN: 1878-6146
Pages: 1138-50

Links

DeepDyve research library

PubMed Articles [8699 Associated PubMed Articles listed on BioPortfolio]

Aspergillus tubingensis and Aspergillus niger as the dominant black Aspergillus, use of simple PCR-RFLP for preliminary differentiation.

This work aimed to identify the species distribution of common clinical and environmental isolates of black Aspergilli based on simple restriction fragment length polymorphism (RFLP) analysis of the ...

Prospecting for the incidence of genes involved in ochratoxin and fumonisin biosynthesis in Brazilian strains of Aspergillus niger and Aspergillus welwitschiae.

Aspergillusniger "aggregate" is an informal taxonomic rank that represents a group of species from the section Nigri. Among A. niger "aggregate" species Aspergillus niger sensu stricto and its cryptic...

Functional Characterization of New Polyketide Synthase Genes Involved in Ochratoxin A Biosynthesis in Aspergillus Ochraceus fc-1.

Ochratoxin A (OTA), a potentially carcinogenic mycotoxin which contaminates grains, is produced by several Aspergillus species. A comparative sequence analysis of the OTA-producing Aspergillus ochrace...

Cloning and Genomic Organization of a Rhamnogalacturonase Gene from Locally Isolated Strain of Aspergillus niger.

The rhg gene encoding a rhamnogalacturonase was isolated from the novel strain A1 of Aspergillus niger. It consists of an ORF of 1.505 kb encoding a putative protein of 446 amino acids with a predict...

Metabolomics Analysis Reveals Specific Novel Tetrapeptide and Potential Anti-Inflammatory Metabolites in Pathogenic Aspergillus species.

Infections related to Aspergillus species have emerged to become an important focus in infectious diseases, as a result of the increasing use of immunosuppressive agents and high fatality associated w...

Clinical Trials [183 Associated Clinical Trials listed on BioPortfolio]

Effect of Aspergillus Niger Prolyl Endoprotease (AN-PEP) Enzyme on the Effects of Gluten Ingestion in Patients With Coeliac Disease

Oral supplementation with enzymes that can cut gluten has been suggested as a potential treatment modality for coeliac disease. In the present study the investigators wish to determine if ...

Galactomannan Antigen in Bronchoalveolar Lavage in the Diagnosis of Invasive Aspergillosis in Neutropenic Patients

Invasive Aspergillosis (IA) is a very serious fungal infection. Hematological patients are the most affected group. IA has a very high morbimortality due to its rapid progression and becau...

Study of FK463 for the Treatment of Invasive Aspergillosis

The purpose of the study is to evaluate the safety and efficacy of FK463 in patients with proven or probable invasive infections due to Aspergillus species.

Access to Healthcare, Patient Comprehension and Future Plans of Women Undergoing Surgery for a Vesicovaginal Fistula in Niamey, Niger

Evaluate access to healthcare, comprehension of pre-operative counseling and post-operative goals of women treated for vesicovaginal fistula in Niger through use of a questionnaire.

Validation of Pathologic Diagnosis of Invasive Fungal Infection by Molecular Method

1. Isolate fungal DNA(Deoxyribonucleic acid) from paraffin-fixed tissue specimens to distinguish and compare Aspergillus species to the existing optical pathological diagnosis. ...

Medical and Biotech [MESH] Definitions

An imperfect fungus causing smut or black mold of several fruits, vegetables, etc.

A genus of mitosporic fungi containing about 100 species and eleven different teleomorphs in the family Trichocomaceae.

Infections of the nervous system caused by fungi of the genus ASPERGILLUS, most commonly ASPERGILLUS FUMIGATUS. Aspergillus infections may occur in immunocompetent hosts, but are more prevalent in individuals with IMMUNOLOGIC DEFICIENCY SYNDROMES. The organism may spread to the nervous system from focal infections in the lung, mastoid region, sinuses, inner ear, bones, eyes, gastrointestinal tract, and heart. Sinus infections may be locally invasive and enter the intracranial compartment, producing MENINGITIS, FUNGAL; cranial neuropathies; and abscesses in the frontal lobes of the brain. (From Joynt, Clinical Neurology, 1998, Ch 27, pp62-3)

Hypersensitivity reaction (ALLERGIC REACTION) to fungus ASPERGILLUS in an individual with long-standing BRONCHIAL ASTHMA. It is characterized by pulmonary infiltrates, EOSINOPHILIA, elevated serum IMMUNOGLOBULIN E, and skin reactivity to Aspergillus antigen.

A fungal toxin produced by various species of Trichoderma, Gladiocladium fimbriatum, Aspergillus fumigatus, and Penicillium. It is used as an immunosuppressive agent.

Quick Search
Advertisement
 


DeepDyve research library

Relevant Topics

Food
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...

Biotechnology - Biotech
"using living things to create products or to do tasks for humans" About Biotechnology - Biotech Biotechnology is the practice of using plants, animals and micro-organisms such as bacteria, as well as biological processes - such as the ripen...


Searches Linking to this Article