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Browsing by UP Author "Steenkamp, Emma Theodora"
Now showing items 1-20 of 139
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Sayari, Mohammad; Van der Nest, Magrieta Aletta; Steenkamp, Emma Theodora; Adegeye, O.O.; Marincowitz, Seonju; Wingfield, Brenda D. (Elsevier, 2019-09)Functional association between genomic loci and specific biological traits remains lacking in many fungi, including the African tree pathogen Ceratocystis albifundus. This is mainly because of the absence of suitable ...
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Palmer, Marike; Steenkamp, Emma Theodora; Blom, Jochen; Hedlund, Brian P.; Venter, S.N. (Stephanus Nicolaas) (Microbiology Society, 2020-04)In prokaryotic taxonomy, a set of criteria is commonly used to delineate species. These criteria are generally based on cohesion at the phylogenetic, phenotypic and genomic levels. One such criterion shown to have promise ...
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Phasha, Mmatshepho Malekgale; Wingfield, Brenda D.; Coetzee, Martin Petrus Albertus; Santana, Quentin C.; Fourie, Gerda; Steenkamp, Emma Theodora (Genetics Society of America, 2017-11)Removal of introns from transcribed RNA represents a crucial step during the production of mRNA in eukaryotes. Available whole-genome sequences and expressed sequence tags (ESTs) have increased our knowledge of this ...
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Beukes, Chrizelle Winsie; Boshoff, Francois S.; Phalane, Francina L.; Hassen, Ahmed Idris; Le Roux, Marianne M.; Stepkowski, Tomasz; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora (Frontiers Media, 2019-06-04)Vachellia karroo (formerly Acacia karroo) is a wide-spread legume species indigenous to southern Africa. Little is known regarding the identity or diversity of rhizobia that associate with this plant in its native range ...
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Wilken, Pieter Markus; Steenkamp, Emma Theodora; Hall, Tracy A.; De Beer, Z. Wilhelm; Wingfield, Michael J.; Wingfield, Brenda D. (Elsevier, 2012)In heterothallic Ascomycota, two opposite but distinct mating types control all sexual processes. Using mating crosses, mating types were assigned to ten isolates of the heterothallic fungal species Ophiostoma quercus. ...
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Avontuur, Juanita Rayleen; Palmer, Marike; Beukes, Chrizelle Winsie; Chan, Wai Yin; Tasiya, Taponeswa; Van Zyl, Elritha; Coetzee, Martin Petrus Albertus; Stepkowski, Tomasz; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora (Elsevier, 2022-02)Please read abstract in the article.
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Claassens, Ricu; Venter, S.N. (Stephanus Nicolaas); Beukes, Chrizelle W.; Stepkowski, Tomasz; Chan, Wai Yin; Steenkamp, Emma Theodora (Elsevier, 2023-09)Please read abstract in the article.
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Steenkamp, Emma Theodora; Van Zyl, E.; Beukes, Chrizelle Winsie; Avontuur, Juanita Rayleen; Chan, Wai Yin; Palmer, Marike; Mthombeni, Lunghile S.; Phalane, Francina Lebogang; Sereme, T. Karabo; Venter, S.N. (Stephanus Nicolaas) (Elsevier, 2015-12)Despite the diversity of Burkholderia species known to nodulate legumes in introduced and native regions, relatively few taxa have been formally described. For example, the Cape Floristic Region of South Africa is thought ...
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Martin, Simon H.; Wingfield, Brenda D.; Wingfield, Michael J.; Steenkamp, Emma Theodora (Oxford University Press, 2011)The reproductive genes of fungi, like those of many other organisms, are thought to diversify rapidly. This phenomenon could be associated with the formation of reproductive barriers and speciation. Ascomycetes produce ...
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Dewing, Claudette; Van der Nest, Magrieta Aletta; Santana, Quentin C.; Proctor, Robert H.; Wingfield, Brenda D.; Steenkamp, Emma Theodora; De Vos, Lieschen (MDPI, 2022-07-29)The Fusarium fujikuroi species complex (FFSC) includes socioeconomically important pathogens that cause disease for numerous crops and synthesize a variety of secondary metabolites that can contaminate feedstocks and ...
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Sayari, Mohammad; Van der Nest, Magrieta Aletta; Steenkamp, Emma Theodora; Rahimlou, Saleh; Hammerbacher, Almuth; Wingfield, Brenda D. (MDPI, 2021-03-22)Terpenes represent the biggest group of natural compounds on earth. This large class of organic hydrocarbons is distributed among all cellular organisms, including fungi. The different classes of terpenes produced by ...
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Fitza, Katrin N.E.; Payn, K.; Steenkamp, Emma Theodora; Myburg, Alexander Andrew; Naidoo, Sanushka (Elsevier, 2013-03)Fusarium circinatum is the causal agent for the disease, pitch canker, in Pinus patula. Commercial forestry incurs large economic losses from the pathogen, primarily as a result of post-planting mortality resulting in ...
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Ceriani, Callin; Wingfield, Michael J.; Fru, Felix Fon; Van Wyk, S.; Rodas, Carlos A.; Wingfield, Brenda D.; Steenkamp, Emma Theodora (Wiley, 2024-06)Fusarium circinatum is an important fungal pathogen of Pinus species utilized in commercial forestry worldwide. In Colombia, it was first found on nursery plants and later in plantations associated with basal cankers on ...
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Visser, Erik A.; Wegrzyn, Jill L.; Steenkamp, Emma Theodora; Myburg, Alexander Andrew; Naidoo, Sanushka (BioMed Central, 2015-12-12)BACKGROUND : Pines are the most important tree species to the international forestry industry, covering 42 % of the global industrial forest plantation area. One of the most pressing threats to cultivation of some pine ...
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Mitchell, R.G. (Richard Glen); Wingfield, Michael J.; Steenkamp, Emma Theodora; Roux, Jolanda; Verryn, Steve D.; Coutinho, Teresa A. (Taylor and Francis, 2014)Since the first appearance of Fusarium circinatum in South Africa in 1990, foresters have been challenged with poor field survival of seedlings at establishment. One of the best long-term solutions is to improve the genetic ...
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Avontuur, Juanita Rayleen; Wilken, Pieter Markus; Palmer, Marike; Coetzee, Martin Petrus Albertus; Stępkowski, Tomasz; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora (Microbiology Society, 2023-09-07)Bradyrhizobium comprises a diverse group of bacteria with various lifestyles. Although best known for their nodule-based nitrogen-fixation in symbiosis with legumes, a select group of bradyrhizobia are also capable of ...
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Naidoo, Kershney; Steenkamp, Emma Theodora; Coetzee, Martin Petrus Albertus; Wingfield, Michael J.; Wingfield, Brenda D.; Corradi, Nicolas (Public Library of Science, 2013-03-12)BACKGROUND: Gene conversion is the mechanism proposed to be responsible for the homogenization of multigene families such as the nuclear ribosomal gene clusters. This concerted evolutionary process prevents individual ...
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Contrasting carbon metabolism in saprotrophic and pathogenic microascalean fungi from Protea trees Aylward, Janneke; Wingfield, Brenda D.; Dreyer, Leanne Laurette; Roets, Francois; Wingfield, Michael J.; Steenkamp, Emma Theodora (Elsevier, 2017-12)Protea-associated Knoxdaviesia species grow on decaying inflorescences, yet are closely related to plant pathogens such as Ceratocystis albifundus. C. albifundus also infects Protea, but occupies a distinct niche. We ...
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Banasiewicz, Joanna; Lisboa, Bruno B.; Da Costa, Pedro B.; Schlindwein, Gilson; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora; Vargas, Luciano K.; Passaglia, Luciane M.P.; Stepkowski, Tomasz (Elsevier, 2021-07)The isolation of rhizobial strains from the root and stem nodules remains a commonly used method despite its limitations as it enables the identification of mainly dominant symbiotic groups within rhizobial communities. ...
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Fourie, Gerda; Wingfield, Michael J.; Wingfield, Brenda D.; Jones, Nicky B.; Morris, Andrew R.; Steenkamp, Emma Theodora (Taylor and Francis, 2014)The primary symptoms associated with Fusarium circinatum infection in pine seedling nurseries are root and collar rot, shoot and the tip die-black and seedling mortality. Management of ths pathogen in nurseries uselly ...
Now showing items 1-20 of 139