Leaf spot was found on field bindweed (Convolvulus arvensis L.) in Shihezi City, Xinjiang Province, China, during the summer of 2015. Pathogens were isolated from the infected leaves of field bindweed and identified as Aspergillus niger based on morphological and molecular analyses (internal transcribed spacer rDNA and β-tubulin gene). A pathogenicity test confirmed that Aspergillus niger cause...

The purpose of this chapter is to describe preliminary results in the attempt to model the linkages between property rights, risk, and livestock development in Niger. Rainfall variation is often identified as the major environmental risk faced by agropastoralists (for example, Swallow 1994). Among the many riskmanagement strategies that are identified, livestock mobility is seen as one of the m...

Polygalacturonases (PG) are pectinolytic enzymes that have technological, functional and biological applications in food processing, fruit ripening and plant-fungus interactions, respectively. In the present, a microtitre plate methodology was used for rapid screening of 61 isolates of fungi from Aspergillus section Nigri to assess production of endo- and exo-PG. Studies of scale-up were carrie...

In the oil-rich Niger Delta, hydrocarbon pollution and oil spillages, gas flaring and sundry anthropogenic activities constitute sources of polycyclic aromatic hydrocarbons (PAHs), with food contamination playing a major role in human exposure. In this study we assessed PAH levels in wild and cultivated edible mushroom species consumed by the general population from the oil producing Niger Delt...

BACKGROUND Aspergillus terreus is a natural producer of itaconic acid and is currently used to produce itaconic acid on an industrial scale. The metabolic process for itaconic acid biosynthesis is very similar to the production of citric acid in Aspergillus niger. However, a key enzyme in A. niger, cis-aconitate decarboxylase, is missing. The introduction of the A. terreus cadA gene in A. niger...

BACKGROUND Aspergillus niger is widely used for enzyme production and achievement of high enzyme production depends on the comprehensive understanding of cell's metabolic regulation mechanisms. RESULTS In this paper, we investigate the metabolic differences and regulation mechanisms between a high glucoamylase-producing strain A. niger DS03043 and its wild-type parent strain A. niger CBS513.8...

Wild type Aspergillus niger isolates from different biotopes from all over the world were compared to each other and to the type strains of other black Aspergillus species with respect to growth and extracellular enzyme profiles. The origin of the A. niger isolate did not result in differences in growth profile with respect to monomeric or polymeric carbon sources. Differences were observed in ...

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 β-tubulin gene. A total of 149 clinical and environmental strains of black Aspergilli were collected and subjected to preliminary morphological examination. Total genomic DNAs were extracted, and PC...

Background: In Niger, palliative care is a necessity in everyday medical practice. However, the setting up of structures and / or mobile teams specifically dedicated to palliative medicine still faces enormous challenges Methods: This work is an update on the status of research, teaching and services relating of palliative medicine in Sakoira Integrated Health Center (SIHC) in Niger and literat...

The genus Fumaria is known for its strong medicinal effects. This research aimed to assess the phytochemical profile in various alkaloid fractions from vaillantii Loisel and asepala Boiss. grown Saveh region of central province Iran their antifungal activity against Aspergillus flavus niger was investigated laboratory conditions. Also, types amount compounds effect on expression key genes aflat...