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Molecular oxygen is one of the most important reactants in biogeochemical cycles. Due to its low solubility in water, the consumption of oxygen leads to the development of oxic-anoxic interfaces, which separate aerobic from anaerobic processes in virtually all environments, ranging in scale from oceanic sediments to the fecal pellets of a small soil(More)
The most reliable and rapid detection method has been the use of nested PCR directed to conserved sequences in the 16S rRNA gene. DNA isolation follows a phytoplasmal enrichment procedure. This process is both expensive and time-consuming. The present study was conducted at the Department of Pathology, South African Sugar Association Experiment Station,(More)
Southern Africa harbors several population groups representing a diversity of gene pool origins. This provides a unique opportunity to study genetic disease predisposition in these populations against a common environmental background. Human leukocyte antigen (HLA) association studies of these populations could improve knowledge on inter-population(More)
While recent results have provided strong evidence for the presence of a stable gut microbiota among several termite species, little is known about variations at the colony or individual level. Using a cultivation-independent approach, we investigated the structure of the bacterial community in the gut of termites from four different colonies of Hodotermes(More)
Eucalypt species are widely used around the world due to their high productivity; however there are some concerns about the invasiveness capacity of eucalypts. We assessed old seed production areas of commercial eucalypt species thought of being at risk of invasion in two places in Southeastern Brazil (Anhembi: lat: 22°28′S; long: 48°04′W; and Itatinga lat:(More)
The importation of sugarcane varieties from other countries is necessary for the breeding of new varieties suited to the diverse environmental conditions in South Africa. To prevent the introduction and spread of new diseases, it is crucial that any imported pathogens are detected before the cane is released from quarantine. Although not present in South(More)
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