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Use of chlorophyll a fluorescence in screening for herbicide susceptibility in several Nicotiana tabacum L. cultivars and breeding lines
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. van Rensburg --- Faculty of Natural Sciences, Department of Plant and Soil Sciences, Private Bag X6001, Republic of South Africa G. H.J. Krüger --- Faculty of Natural Sciences, Department of Plant and Soil Sciences, Private Bag X6001, Republic of South Africa C.R. Nolte --- , Republic of South AfricaPossible differential sensitivity of newly released tobacco cultivars to different herbicides must be determined, as possible unfavourable combinations could exist which may have large financial implications in terms of cultivars bred, herbicide and tobacco line combinations used, and concentrations in... -
Differential efficacy of tralkoxydim and diclofop-methyl on a suspected resistant ryegrass (Lolium rigidum Gaud.) biotype
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.J. Smit --- , Republic of South Africa H.A. Smit --- , Republic of South Africa B.L. de Villiers --- , Republic of South AfricaThe efficacy of herbicides belonging to the aryloxyphenoxy propionic acids and cyclohexanedione groups was determined on a suspected resistant ryegrass biotype (Lolium rigidum Gaud.). Ryegrass seed was collected in the Southern Cape and germinated in a glasshouse with a day/night... -
Responses of Ethiopian durum wheat (Triticum turgidum var durum L.) genotypes to drought stress
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.F. Solomon --- Departments of Plant Sciences, South Africa M.T. Labuschagne --- Departments of Plant Sciences, South Africa A. T.P. Bennie --- Departments of Soil, Crop and Climate Sciences, South AfricaThe aim of this study was to identify yield components associated with drought tolerance in durum wheat. Twenty six durum wheat genotypes, from different agro-ecologies of Ethiopia were evaluated under moisture stress and non-stress conditions (35% and 70% available soil... -
Reaction of South African soybean cultivars to rust caused by Phakopsora pachyrhizi
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.W. McLaren --- Centre for Plant Health Management, Department of Plant Sciences, South AfricaSoybean rust was recorded in South Africa in February 2001 in the Vryheid area of KwaZulu-Natal, from where it spread throughout production areas east of the escarpment. Management of the disease is presently, based on fungicide spray programs. Commercial soybean... -
AIDS, individual behaviour and the unexplained remaining variation
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alison Katz --- , SwitzerlandFrom the start of the AIDS pandemic, individual behaviour has been put forward, implicitly or explicitly, as the main explanatory concept for understanding the epidemiology of HIV infection and in particular for the rapid spread and high prevalence in sub-Saharan... -
Antibiotic resistance among heterotrophic bacteria in Lagos Lagoon, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OA Agwu --- Department of Biological Oceanography, NigeriaAntibiotic-resistant bacteria in the aquatic environment are considered reservoirs for drug-resistant genes. Therefore, culturable heterotrophic bacteria isolated from Lagos Lagoon surface waters between 2011 and 2012 were screened for their susceptibility to 14 commonly used antibiotics belonging to six major... -
Evaluation of the acute toxicity of refined petroleum products against Pila ovata (Gastropoda: Ampullariidae) and Poecilia reticulata (Teleostei: Poeciliidae)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BlessingJ OribhaborStatic and static-renewal evaluation of the acute toxicity of three refined petroleum products — petrol, kerosene and diesel — against two freshwater animals, the mollusc Pila ovata and the fish Poecilia reticulata, was conducted in the laboratory. Petrol, kerosene and... -
The epidemiology and pathogenesis of type 1 diabetes mellitus in Africa
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: CJ Padoa --- Department of Chemical Pathology National Health Laboratory Service,Type 1 diabetes is a serious, debilitating disease, with life-threatening complications, and the financial burden associated with the management of this disease is enormous. Early diagnosis and intervention can improve morbidity and mortality. Unfortunately, in Africa, type 1 diabetes is... -
Genotypic diversity of Mycobacterium tuberculosis in pretoria
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Prisca Hove --- Department of Microbiological Pathology, Julitha Molepo --- Department of Microbiological Pathology, Samukeliso Dube --- Department of Microbiological Pathology, Maphoshane Nchabeleng --- Department of Microbiological Pathology,Tuberculosis is a global health problem. Continuous efforts are needed to understand the genetic diversity and geographical distribution of Mycobacterium tuberculosis. The objective of this study was to determine the genetic diversity of M. tuberculosis strains in Soshanguve, Pretoria. Eighty-nine... -
Re-evaluating the role of piperacillin-tazobactam in the treatment of hospital-acquired infections
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: W. Lowman --- Department of Clinical Microbiology and Infectious Diseases,The objectives were to determine the minimum inhibitory concentrations (MICs) of piperacillin-tazobactam against blood culture isolates over a two-year period, and to compare the MICs with isolates from the same site upon the South African launch of piperacillin-tazobactam. The intention... -
Antimicrobial Susceptibility of Campylobacter Species
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: Clifford Simango --- Department of Medical Laboratory Sciences, ZimbabweThermophilic Campylobacter spp. are important causative agents of diarrhoeal disease in humans. Antimicrobial-resistant Campylobacter spp. that originate from poultry can enter the human food chain and result in resistant Campylobacter spp. in human infections. Campylobacter spp. were isolated from chicken... -
Antifungal susceptibility profile of yeast isolates from sterile sites at a tertiary hospital in South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: N A Makhado --- University of Limpopo, F. Ismail --- National Health Laboratory Service, Tshwane Academic Division, Y. Dangor --- University of Limpopo, T J H Chephe --- National Health Laboratory Service, Dr George Mukhari Tertiary Laboratory, A A Hoosen --- National Health Laboratory Service, Tshwane Academic Division, M. Nchabeleng --- University of Limpopo,Invasive infections caused by yeasts are associated with high mortality and morbidity, and resistance to antifungal agents is increasing. Candida spp. has emerged as the leading cause of systemic nosocomial fungal infections. The aim of this study was to identify... -
Neonatal septicaemia: prevalence and antimicrobial susceptibility patterns of common pathogens at Princess Marina Hospital, Botswana
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Lydia Mudzikati --- Medical Laboratory, Princess Marina Hospital, Gaborone, Botswana, and Division of Community Health, South Africa Angela Dramowski --- Department of Paediatrics and Child Health, South AfricaBackground: Septicaemia is the third most common cause of neonatal death after prematurity and birth asphyxia. The prevalence of neonatal sepsis and the spectrum of causative microorganisms fluctuates over time, thus facility-specific surveillance of neonatal bloodstream infections is important. Increasing... -
Epidemiology of cystic fibrosis respiratory pathogens isolated at a South African Hospital, 2006–2010
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Vindana Chibabhai --- National Health Laboratory Service (NHLS), Department of Clinical Microbiology and Infectious Diseases, South Africa Warren Lowman --- Department of Clinical Microbiology and Infectious Diseases, South AfricaBackground: The epidemiology of cystic fibrosis (CF) associated pathogens other than Pseudomonas aeruginosa in the South African cystic fibrosis population has not been previously described. -
Neonatal sepsis in a Nigerian Tertiary Hospital: Clinical features, clinical outcome, aetiology and antibiotic susceptibility pattern
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Adediwura O Arowosegbe --- Department of Microbiology, College of Biosciences, Nigeria David A Ojo --- Department of Microbiology, College of Biosciences, Nigeria Iyabode O Dedeke --- Department of Paediatrics, Nigeria Olufunke B Shittu --- Department of Microbiology, College of Biosciences, Nigeria Olusola A Akingbade --- Department of Medical Microbiology and Parasitology, NigeriaBackground: Neonatal sepsis is a significant cause of neonatal mortality in developing countries. The aetiological agents and their antimicrobial susceptibility patterns are dynamic. Objectives: This study determined clinical features, aetiology, antimicrobial susceptibility and clinical outcome of neonatal sepsis in a... -
An artificial inoculation protocol for Uromycladium acaciae, cause of a serious disease of Acacia mearnsii in southern Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Stuart Fraser --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Alistair R McTaggart --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Julian Moreno Chan --- Institute for Commercial Forestry Research, South Africa Thobile Nxumalo --- Institute for Commercial Forestry Research, South Africa Louise S Shuey --- Department of Genetics, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Michael J Wingfield --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South Africa Jolanda Roux --- Department of Plant and Soil Sciences, Tree Protection Co-operative Programme, Forestry and Agricultural Biotechnology Institute, Faculty of Natural and Agricultural Sciences, South AfricaUromycladium acaciae is the cause of a severe wattle rust epidemic in plantations of Acacia mearnsii (black wattle) in southern Africa. Research on the biology of this damaging rust is assisting in the development of control strategies. One strategy under... -
Susceptibility to hepatitis B infection, hepatitis B/HIV co-infections and hepatitis B immunity in HIV-positive patients starting HAART in Durban, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: FM Chonco --- Department of Family Medicine, South Africa S Rangiah --- Department of Family Medicine, South AfricaBackground: HIV/HBV co-infection remains a global threat to HIV management despite the available effective hepatitis B vaccine and hepatitis B covering antiretroviral therapy. Many studies done in South Africa and internationally showed high prevalence of HIV/hepatitis B co-infection, which mandated... -
Eucalypt susceptibility towards the invasive Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae) in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Samantha J Bush --- , South Africa Bernard Slippers --- , South Africa Brett P Hurley --- , South AfricaGlycaspis brimblecombei (Hemiptera: Aphalaridae) is a eucalypt feeder native to Australia. Infestations of G. brimblecombei can cause leaf wilt, dieback and death in weak or severely infested plants. In many countries where G. brimblecombei has been introduced, patterns of susceptibility...