ABSTRACT The effects of water and methanol extracts of 19 Ghanaian plants belonging to 12 families on some aspects of the physiology of five fungi (Scopulariopsis brevicaulis, Aspergillus niger, A. flavus, Sclerotium rolfsii, Nigrospora sp.), and five bacterial species (Pseudomonas aeruginosa, Staphylococcus aureus, Salmonella (Group C,), Escherichia coli (EPEC 0:43), E. coli (ETEC OK5)) were investigated in vitro in either liquid or agar medium amended with varying dilutions (1:1 - 1:5 v/v)...
ABSTRACT A major constraint to increased and sustainable production of tomatoes is its infestation by insect pests particularly the tomato fruit worm Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae). The control of this insect relies heavily on the use of synthetic insecticides which have negative environmental effects. Some insects have developed resistance to certain insecticides. Efforts are therefore being made to look for alternative control strategies that are environmentally-safe...
ABSTRACT In this research work, Bioremediation technology was used to reduce the heavy contents of the soil collected from the bank of the sewage pond of the University of Nigeria Nsukka. The heavy metals were; zinc (Zn) cadmium (Cd) and lead (Pd). In the bioremediation process, fungi, bacteria and plants were used. The bacteria used were Bacillus cereus, the fungi used was Aspergillus fumigatus and the plant used was Bryophyllum pinnatum (life plant). The combinations of these organisms wer...
ABSTRACT Aflatoxins are fungal metabolites which are toxic, mutagenic and carcinogenic and thus cause undesirable effects on animal and human health when ingested with feed or foodstuffs. Aflatoxin producing fungi may occur in certain food products in form of spores, and thus when conditions are favourable, the fungi germinate and may produce aflatoxin in varied amounts. Ingestion of higher dose of aflatoxin (Codex Commission upper limit is 10ppb), may result in aflatoxicosis which manifests ...
ABSTRACT Human systemic fungal infections have increased in the past decade due to the dramatic increase in immunocompromised patients hence the emergence of resistant fungal strains. It is therefore necessary to discover new antifungal compounds with novel mode of action. This study was aimed at isolating and characterizing antifungal agents from wood decaying fungi (WDF). The growth conditions for maximum production of bioactive agents from WDF were first tested. It was observed that miner...
Abstract: Abstract:This study was conducted in the scope of developing a sustainable effective approach againstsubterranean termite pests using entomopathogenic and endophytic fungus-based biopesticides.Termites,Odontotermesspp. workers, were tested for their susceptibility to 15 entomopathogenicfungal isolates through the direct spraying of conidia suspensions at 1×108conidia/mL. In general,all the isolates screened were pathogenic, with 100% mortality 4–7 days post-inoculation. However,...
ABSTRACT Colocynthis citrullus (Egusi) are seeds of a creeping annual and intercropping plant made use in traditional farming practices while Irvingia gabonensis (Ogbono) are seeds of small mango-like fruit found in West Africa. The seeds when ground into paste are highly mucilaginous and are used in thickening soups. They also add to the nutritive value of soups. They also add to the nutritive value of soups. Samples of Colocynthis citrullus (Egusi) and Irvingia gabonensis (Ogbono) were rand...
ABSTRACT A total of eight soil samples were collected from different sites within FUOYE environment and were analyzed to determine the presence of antibiotic producing bacteria, fungi and actinomycete Using nutrient agar, sabauraud dextrose agar and glycerol yeast extract agar as culture media. Seven bacteria: Escherichia coli, Bacillus spp, Pseudomonas spp, Azomonas spp, Gluconobacter spp, Micrococcus spp, and Staphylococcus aureus; five fungi: Rhizopus spp, Mucor spp, Rhodotorula spp, ...
ABSTRACT A nutrient is a substance used by an organism to survive, grow, and reproduce. The requirement for dietary nutrient intake applies to animals , plants , fungi , and protists. Nutrients can be incorporated into cells for metabolic purposes or excreted by cells to create non-cellular structures, such as hair, scales, feathers , or exoskeletons . Some nutrients can be metabolically converted to smaller molecules in the process of releasing energy, such as for carbohydrates , lipids , pr...
ABSTRACT Cultivation of Jatropha curcas L. for production of biodiesel as an alternative source of energy is crucial for sustainable development in Nigeria. Pests and pathogens especially fungi have been reported to be a major constraint to commercial cultivation of J. curcas in Asia and some West African countries. However, this is yet to be fully investigated and documented in Nigeria. Fungal pathogens infecting J. curcas in southwestern Nigeria were therefore investigated. Two hundred plan...
This study was conducted in both laboratories of plant pathology and tissue culture in College of Agricultural Studies, Sudan University Science and Technology Nine cultivars of Sorghum bicolor collected from Gadarif area were tested for the presence of seed borne fungi. The cultivars were Mugudahmer, Wadahmed, Wadakar. Arfaagadamac, Hageen, Tetron, Dabar, Fatarita and Tabet. Seed health testing included dry inspection in which the seeds were divided into healthy, broken and infected....
ABSTRACT Cultivation of Jatropha curcas L. for production of biodiesel as an alternative source of energy is crucial for sustainable development in Nigeria. Pests and pathogens especially fungi have been reported to be a major constraint to commercial cultivation of J. curcas in Asia and some West African countries. However, this is yet to be fully investigated and documented in Nigeria. Fungal pathogens infecting J. curcas in southwestern Nigeria were therefore investigated. Two hundred plan...
Abstract: Endophytic fungi live within plant tissues without causing any harm to the host, promote its growth, and induce systemic resistance against pests and diseases. To mitigate the challenging concealed feeding behavior of immature stages of Tuta absoluta in both tomato (Solanum lycopersicum) and nightshade (Solanum scabrum) host plants, 15 fungal isolates were assessed for their endophytic and insecticidal properties. Twelve isolates were endophytic to both host plants with varied colo...
ABSTRACT Maize is an important cereal crop and a staple food in most parts of Africa. Food insecurity is one of the major challenges in Sub-Saharan Africa. The food situation is worsened by fungal infestation of maize crops in the fields. The most prevalent fungi on maize crops are Fusarium moniliforme and Fusarium graminearum that cause red ear rot, stalk rot and Grey leaf spot (GLS) respectively. The development of antifungal resistance and side effects associated with synthetic pesticides ...
Abstract/Overview Cassava (Manihot esculentaCrantz) is a major source of carbohydrates, calcium, vitamins (B and C), and essential minerals and is the third most important source of calories in the tropics. However, it is not clear if the traditional processing methods expose the products to microbial contamination.) is study assessed the levels of fungi and aflatoxin contamination in traditionally processed cassava products (Akuoga and Abeta). A total of 38 samples were collected from th...