Browsing Research Articles (Biochemistry) by UP Author "Steenkamp, Emma Theodora"

Browsing Research Articles (Biochemistry) by UP Author "Steenkamp, Emma Theodora"

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  • Agrobacterium-mediated transformation of Ceratocystis albifundus 
    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 ...
  • All ANIs are not created equal : implications for prokaryotic species boundaries and integration of ANIs into polyphasic taxonomy 
    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 ...
  • Both alpha- and beta-rhizobia occupy the root nodules of Vachellia karroo in South Africa 
    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 ...
  • Bradyrhizobium altum sp. nov., Bradyrhizobium oropedii sp. nov. and Bradyrhizobium acaciae sp. nov. from South Africa show locally restricted and pantropical nodA phylogeographic patterns 
    Avontuur, Juanita R.; 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.
  • Distribution and evolution of nonribosomal peptide synthetase gene clusters in the Ceratocystidaceae 
    Sayari, Mohammad; Van der Nest, Magrieta Aletta; Steenkamp, Emma Theodora; Soal, Nicole Christine; Wilken, Pieter Markus; Wingfield, Brenda D. (MDPI Publishing, 2019-04-30)
    In filamentous fungi, genes in secondary metabolite biosynthetic pathways are generally clustered. In the case of those pathways involved in nonribosomal peptide production, a nonribosomal peptide synthetase (NRPS) gene ...
  • Diversity and evolution of polyketide biosynthesis gene clusters in the Ceratocystidaceae 
    Sayari, Mohammad; Steenkamp, Emma Theodora; Van der Nest, Magrieta Aletta; Wingfield, Brenda D. (Elsevier, 2018-09)
    Polyketides are low-molecular weight secondary metabolites with diverse biological activities. Polyketide synthase (PKS) and other proteins responsible for producing these compounds are often encoded from genes that are ...
  • Draft genome of Cercospora zeina, Fusarium pininemorale, Hawksworthiomyces lignivorus, Huntiella decipiens and Ophiostoma ips 
    Wingfield, Brenda D.; Berger, David Kenneth; Steenkamp, Emma Theodora; Lim, Hye-Jin; Duong, Tuan A.; Bluhm, Burton H.; De Beer, Z. Wilhelm; De Vos, Lieschen; Fourie, Gerda; Naidoo, Kershney; Olivier, Nicholas Abraham; Lin, Yao-Cheng; Van de Peer, Yves; Joubert, Fourie; Crampton, Bridget Genevieve; Swart, Velushka; Soal, Nicole Christine; Tatham, Catherine; Van der Nest, Magrieta Aletta; Van der Merwe, Nicolaas Albertus (Albie); Van Wyk, Stephanie; Wilken, Pieter Markus; Wingfield, Michael J. (International Mycological Association, 2017-11-21)
    The genomes of Cercospora zeina, Fusarium pininemorale, Hawksworthiomyces lignivorus, Huntiella decipiens, and Ophiostoma ips are presented in this genome announcement. Three of these genomes are from plant pathogens and ...
  • Draft genome sequence of Annulohypoxylon stygium, Aspergillus mulundensis, Berkeleyomyces basicola (syn. Thielaviopsis basicola), Ceratocystis smalleyi, two Cercospora beticola strains, Coleophoma cylindrospora, Fusarium fracticaudum, Phialophora cf. hyalina, and Morchella septimelata 
    Wingfield, Brenda D.; Bills, Gerald F.; Dong, Yang; Huang, Wenli; Nel, Wilma Janine; Swalarsk-Parry, Benedicta S.; Vaghefi, Niloofar; Wilken, Pieter Markus; An, Zhiqiang; De Beer, Z. Wilhelm; De Vos, Lieschen; Chen, Li; Duong, Tuan A.; Gao, Yun; Hammerbacher, Almuth; Kikkert, Julie R.; Li, Yan; Li, Huiying; Li, Kuan; Li, Qiang; Liu, Xingzhong; Ma, Xiao; Naidoo, Kershney; Pethybridge, Sarah J.; Sun, Jingzu; Steenkamp, Emma Theodora; Van der Nest, Magrieta Aletta; Van Wyk, Stephanie; Wingfield, Michael J.; Xiong, Chuan; Yue, Qun; Zhang, Xiaoling (International Mycological Association, 2018-06-11)
    Draft genomes of the species Annulohypoxylon stygium, Aspergillus mulundensis, Berkeleyomyces basicola (syn. Thielaviopsis basicola), Ceratocystis smalleyi, two Cercospora beticola strains, Coleophoma cylindrospora, ...
  • Draft genome sequences of Fusarium xylarioides, Teratosphaeria gauchensis and T. zuluensis and genome annotation for Ceratocystis fimbriata 
    Wingfield, Brenda D.; Fourie, Arista; Simpson, Melissa Claire; Bushula-Njah, Vuyiswa; Aylward, Janneke; Barnes, Irene; Coetzee, Martin Petrus Albertus; Dreyer, Leanne Laurette; Duong, Tuan A.; Geiser, David M.; Roets, Francois; Steenkamp, Emma Theodora; Van der Nest, Magrieta Aletta; Van Heerden, Carel J.; Wingfield, Michael J. (International Mycological Association, 2019-09-13)
    Draft genomes of the fungal species Fusarium xylarioides, Teratosphaeria gauchensis and T. zuluensis are presented. In addition an annotation of the genome of Ceratocystis fimbriata is presented. Overall these genomes ...
  • Dual RNA-Seq analysis of the pine-Fusarium circinatum interaction in resistant (Pinus tecunumanii) and susceptible (Pinus patula) hosts 
    Visser, Erik A.; Wegrzyn, Jill L.; Steenkamp, Emma Theodora; Myburg, Alexander Andrew; Naidoo, Sanushka (MDPI, 2019-09-04)
    Fusarium circinatum poses a serious threat to many pine species in both commercial and natural pine forests. Knowledge regarding the molecular basis of pine-F. circinatum host-pathogen interactions could assist efforts to ...
  • Environmentally friendly methods for controlling pine pitch canker 
    Martin-Garcia, J.; Zas, R.; Solla, A.; Woodward, S.; Hantula, Jarkko; Vainio, E.J.; Mullett, Martin S.; Morales-Rodriguez, C.; Vannini, A.; Martinez-Alvarez, P.; Pinto, G.; Alves, A.; Amaral, J.; Wingfield, Michael J.; Fourie, Gerda; Steenkamp, Emma Theodora; Ahumada, R.; Sera, B.; Sanz-Ros, A.V.; Raposo, R.; Elvira-Recuenco, M.; Iturritxa, E.; Gordon, T.R.; Diez, J.J. (Wiley, 2019-06)
    Fusarium circinatum is a highly virulent invasive pathogen that causes the disease commonly known as pine pitch canker (PPC). On mature trees, the most common symptoms of PPC include resin bleeding, resinous cankers, wilting ...
  • Extracellular vesicles in teasing apart complex plant-microbiota links : implications for microbiome-based biotechnology 
    Motaung, Thabiso Eric; Steenkamp, Emma Theodora (American Society for Microbiology, 2021-07)
    Extracellular vesicles (EVs) are subcellular carriers of bioactive compounds with a complex array of functional effects on target cells. In mammals, circulating bodily fluid microbiota EVs (mbEVs) deliver cargo from ...
  • Fungal genomes enhance our understanding of the pathogens affecting trees cultivated in Southern Hemisphere plantations 
    Coetzee, Martin Petrus Albertus; Santana, Quentin C.; Steenkamp, Emma Theodora; Wingfield, Brenda D.; Wingfield, Michael J. (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor and Francis Group), 2020)
    Forest pathogens are a major cause of forest disturbances and they have a significant economic impact on commercial forestry. Genomics is an important technology now available for studies concerning tree health, enabling ...
  • Genome-informed Bradyrhizobium taxonomy : where to from here? 
    Avontuur, Juanita R.; Palmer, Marike; Beukes, Chrizelle Winsie; Chan, Wai Yin; Coetzee, Martin Petrus Albertus; Blom, Jochen; Stępkowski, Tomasz; Kyrpides, Nikos C.; Woyke, Tanja; Shapiro, Nicole; Whitman, William B.; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora (Elsevier, 2019-07)
    Bradyrhizobium is thought to be the largest and most diverse rhizobial genus, but this is not reflected in the number of described species. Although it was one of the first rhizobial genera recognised, its taxonomy remains ...
  • Genome-wide analyses of repeat-induced point mutations in the Ascomycota 
    Van Wyk, Stephanie; Wingfield, Brenda D.; De Vos, Lieschen; Van der Merwe, Nicolaas Albertus (Albie); Steenkamp, Emma Theodora (Frontiers Media, 2021-02)
    The Repeat-Induced Point (RIP) mutation pathway is a fungus-specific genome defense mechanism that mitigates the deleterious consequences of repeated genomic regions and transposable elements (TEs). RIP mutates targeted ...
  • Genomic overview of closely related fungi with different Protea host ranges 
    Aylward, Janneke; Wingfield, Brenda D.; Dreyer, Leanne Laurette; Roets, Francois; Wingfield, Michael J.; Steenkamp, Emma Theodora (Elsevier, 2018-12)
    Genome comparisons of species with distinctive ecological traits can elucidate genetic divergence that influenced their differentiation. The interaction of a microorganism with its biotic environment is largely regulated ...
  • Global geographic distribution and host range of Fusarium circinatum, the causal agent of pine pitch canker 
    Drenkhan, Rein; Ganley, Beccy; Martin-Garcia, Jorge; Vahalík, Petr; Adamson, Kalev; Adamcikova, Katarina; Ahumada, Rodrigo; Blank, Lior; Braganca, Helena; Capretti, Paolo; Cleary, Michelle; Cornejo, Carolina; Davydenko, Kateryna; Diez, Julio J.; Dogmus Lehtijarvi, Hatice Tugba; Dvorak, Milon; Enderle, Rasmus; Fourie, Gerda; Georgieva, Margarita; Ghelardini, Luisa; Hantula, Jarkko; Ioos, Renaud; Iturritxa, Eugenia; Kanetis, Loukas; Karpun, Natalia N.; Koltay, Andras; Landeras, Elena; Markovskaja, Svetlana; Mesanza, Nebai; Milenkovic, Ivan; Musolin, Dmitry L.; Nikolaou, Konstantinos; Nowakowska, Justyna A.; Ogris, Nikica; Oskay, Funda; Oszako, Tomasz; Papazova-Anakieva, Irena; Paraschiv, Marius; Pasquali, Matias; Pecori, Francesco; Rafoss, Trond; Raitelaityte, Kristina; Raposo, Rosa; Robin, Cecile; Rodas, Carlos A.; Santini, Alberto; Sanz-Ros, Antonio V.; Selikhovkin, Andrey V.; Solla, Alejandro; Soukainen, Mirkka; Soulioti, Nikoleta; Steenkamp, Emma Theodora; Tsopelas, Panaghiotis; Vemic, Aleksandar; Vettraino, Anna Maria; Wingfield, Michael J.; Woodward, Stephen; Zamora-Ballesteros, Cristina; Mullett, Martin S. (MDPI Publishing, 2020-07-01)
    Fusarium circinatum, the causal agent of pine pitch canker (PPC), is currently one of the most important threats of Pinus spp. globally. This pathogen is known in many pine-growing regions, including natural and planted ...
  • Grasses as a refuge for Fusarium circinatum L. – evidence from South Africa 
    Herron, Darryl A.; Wingfield, Michael J.; Fru, Felix Fon; Wingfield, Brenda D.; Steenkamp, Emma Theodora (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor and Francis Group), 2020)
    Fusarium circinatum L. is an important pathogen in countries that grow and manage Pinus species. Approximately 50% or 600 000 ha of South Africa’s commercial plantations are planted to Pinus spp. and some of these are ...
  • High genetic diversity of Fusarium circinatum associated with the first outbreak of pitch canker on Pinus patula in South Africa 
    Fru, Felix Fon; Steenkamp, Emma Theodora; Wingfield, Michael J.; Roux, Jolanda (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor & Francis Group), 2019)
    The disease known as pitch canker results from infection of Pinus species by the fungus Fusarium circinatum. This fungus also causes a serious root disease of Pinus seedlings and cuttings in forestry nurseries. Pinus radiata ...
  • The history and distribution of nodulating Paraburkholderia, a potential inoculum for Fynbos forage species 
    Beukes, Chrizelle Winsie; Venter, S.N. (Stephanus Nicolaas); Steenkamp, Emma Theodora (Wiley, 2021-03)
    Legumes in the Fynbos vegetation of the Western Cape of South Africa have emerged as candidates for domestication, particularly for their adaptation to acidic and infertile soils. However, South African rhizobia have ...