Browsing Research Articles (Genetics) by UP Author "Wingfield, Michael J."

Browsing Research Articles (Genetics) by UP Author "Wingfield, Michael J."

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  • Ceratocystis species on Acacia mearnsii and Eucalyptus spp. in eastern and southern Africa including six new species 
    Heath, R.N. (Ronald Natale); Wingfield, Michael J.; Wingfield, Brenda D.; Meke, G.; Mbaga, A.; Roux, Jolanda (Kunming University of Science and Technology, P.R. China, 2009-01)
    A survey of Ceratocystis species infecting wounds on non-native Acacia mearnsii and Eucalyptus spp. in Kenya, Malawi, South Africa and Tanzania resulted in the identification of eight species of which six were new to ...
  • Ceratocystis wilt on Eucalyptus : first record from South Africa 
    Roux, Jolanda; Wingfield, Michael J.; Fourie, Arista; Noeth, K.; Barnes, Irene (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor and Francis Group), 2020)
    Wilt and death of an E. grandis × E. urophylla variety was recently observed in the Zululand region of KwaZulu-Natal, South Africa. Symptoms on the dying trees included a streaking pattern of discolouration in the sapwood ...
  • Challenges to planted forest health in developing economies 
    Hurley, Brett Phillip; Slippers, Bernard; Sathyapala, Shiroma; Wingfield, Michael J. (Springer, 2017-11)
    A number of strategies have been proposed to manage the increasing threat of insect pests to non-native plantation forests, but the implementation of these strategies can be especially challenging in developing economies, ...
  • Characterisation of Armillaria species based on pectic isozyme analyses 
    Coetzee, Martin Petrus Albertus; Maphosa, L.; Mwenje, E.; Wingfield, Michael J.; Wingfield, Brenda D. (Kunming University of Science and Technology, P.R. China, 2009-05)
    Armillaria spp. are the causal agents of Armillaria root rot on a wide variety of mainly woody plants. Identification of these fungi using morphological characteristics is complicated by the fact that fruiting structures ...
  • Characterisation of Zimbabwean Armillaria using IGS-1 sequences and AFLP analysis 
    Wingfield, Brenda D.; Maphosa, L.; Coetzee, Martin Petrus Albertus; Mwenje, E.; Wingfield, Michael J. (Kunming University of Science and Technology, P.R. China, 2009-01)
    Armillaria root and butt rot disease is a common problem in peach orchards, tea and pine plantations in the Eastern Highlands of Zimbabwe. The species of Armillaria causing this disease have not been fully identified but ...
  • Characterization of Phytophthora hybrids from ITS clade 6 associated with riparian ecosystems in South Africa and Australia 
    Nagel, Jan Hendrik; Gryzenhout, Marieka; Slippers, Bernard; Wingfield, Michael J.; Hardy, Giles E. St. J.; Stukely, Michael J.C.; Burgess, Treena I. (Elsevier, 2013)
    Surveys of Australian and South African rivers revealed numerous Phytophthora isolates residing in clade 6 of the genus, with internal transcribed spacer (ITS) gene regions that were either highly polymorphic or ...
  • Characterization of the mating-type genes in Leptographium procerum and Leptographium profanum 
    Duong, Tuan A.; De Beer, Z. Wilhelm; Wingfield, Brenda D.; Wingfield, Michael J. (Elsevier, 2013-06)
    Leptographium procerum and the closely related species Leptographium profanum, are ascomycetes associated with root-infesting beetles on pines and hardwood trees, respectively. Both species occur in North America where ...
  • Characterization of the pitch canker fungus, Fusarium circinatum, from Chile 
    Jacobs, Adriaana; Coutinho, Teresa A.; Wingfield, Michael J.; Ahumada, Rodrigo; Wingfield, Brenda D. (Academy of Science of South Africa, 2007-05)
    Fusarium circinatum is the causal agent of the pine disease commonly referred to as pitch canker. During 2001, a Fusarium species was isolated from dying Pinus radiata clonal hedges in various forestry nurseries in Chile ...
  • Chromium sequencing : the doors open for genomics of obligate plant pathogens 
    McTaggart, Alistair R.; Duong, Tuan A.; Le, Vang Quy; Shuey, Louise S.; Smidt, Werner; Naidoo, Sanushka; Wingfield, Michael J.; Wingfield, Brenda D. (Future Medicine, 2018-11)
    It is challenging to sequence and assemble genomes of obligate plant pathogens and microorganisms because of limited amounts of DNA, comparatively large genomes and high numbers of repeat regions. We sequenced the 1.2 ...
  • A class-wide phylogenetic assessment of Dothideomycetes 
    Schoch, C.L.; Crous, Pedro W.; Groenewald, Johannes Zacharias; Boehm, E.W.A.; Burgess, Treena I.; De Gruyter, J.; De Hoog, G. Sybren; Dixon, L.J.; Grube, M.; Gueidan, C.; Harada, Y.; Hatakeyama, S.; Hirayama, K.; Hosoya, T.; Huhndorf, S.M.; Hyde, Kevin D.; Jones, E.B.G.; Kohlmeyer, J.; Kruys, A.; Li, Y.M.; Lucking, R.; Lumbsch, H. Thorsten; Marvanova, L.; Mbatchou, J.S.; McVay, A.H.; Miller, A.N.; Mugambi, G.K.; Muggia, L.; Nelsen, M.P.; Nelson, P.; Owensby, C.A.; Phillips, A.J.L.; Phongpaichit, S.; Pointing, Stephen B.; Pujade-Renaud, V.; Raja, H.A.; Rivas Plata, E.; Robbertse, Barbara; Ruibal, C.; Sakayaroj, J.; Sano, T.; Selbmann, L.; Shearer, C.A.; Shirouzu, T.; Slippers, Bernard; Suetrong, S.; Tanaka, K.; Volkmannkohlmeyer, B.; Wingfield, Michael J.; Wood, A.R.; Woudenberg, J.H.C.; Yonezawa, H.; Zhang, Yong; Spatafora, J.W. (Cbs Publications / Centraalbureau voor Schimmelcultures, 2009)
    We present a comprehensive phylogeny derived from 5 genes, nucSSU, nucLSU rDNA, TEF1, RPB1 and RPB2, for 356 isolates and 41 families (six newly described in this volume) in Dothideomycetes. All currently accepted orders ...
  • Clonal structure of Ceratocystis manginecans populations from mango wilt disease in Oman and Pakistan 
    Al Adawi, Ali Obaid; Barnes, Irene; Khan, I.A.; Deadman, M.L.; Wingfield, Brenda D.; Wingfield, Michael J. (Springer, 2014-07)
    Ceratocystis manginecans has recently been described from Oman and Pakistan where the fungus causes a serious wilt disease of mango. In both countries, the disease has moved rapidly throughout mango producing areas leading ...
  • Community composition and distribution of Phytophthora species across adjacent native and non-native forests of South Africa 
    Bose, Tanay; Wingfield, Michael J.; Roux, Jolanda; Vivas, Maria; Burgess, Treena I. (Elsevier, 2018-12)
    The diversity of Phytophthora species associated with various ecological niches is poorly understood. In this study, the community composition and distribution of Phytophthora species associated with non-native plantation ...
  • A comparison of control results for the alien invasive woodwasp, Sirex noctilio, in the southern hemisphere 
    Hurley, Brett Phillip; Slippers, Bernard; Wingfield, Michael J. (Blackwell, 2007-08)
    1 Sirex noctilio has resulted in one of the most damaging biological invasions of pine forestry in the southern hemisphere. 2 An intensive, integrated control programme has been developed for this pest and is generally ...
  • Complete genetic linkage maps from an interspecific cross between Fusarium circinatum and Fusarium subglutinans 
    De Vos, Lieschen; Myburg, Alexander Andrew; Wingfield, Michael J.; Desjardins, Anne E.; Gordon, Thomas R. (Tom); Wingfield, Brenda D. (Elsevier, 2007-08)
    The Gibberella fujikuroi complex includes many plant pathogens of agricultural crops and trees, all of which have anamorphs assigned to the genus Fusarium. In this study, an interspecific hybrid cross between Gibberella ...
  • Concerted evolution in the ribosomal RNA cistron 
    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 ...
  • Confronting the constraints of morphological taxonomy in the Botryosphaeriales 
    Slippers, Bernard; Roux, Jolanda; Wingfield, Michael J.; Van der Walt, F.J.J. (Francois Johannes Jacobus); Jami, Fahimeh; Mehl, James William Montague; Marais, G.J. (Naturalis Biodiversity Center and Centraalbureau voor Schimmelcultures, 2014-09)
    Identification of fungi and the International Code of Nomenclature underpinning this process, rests strongly on the characterisation of morphological structures. Yet, the value of these characters to define species in many ...
  • 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 ...
  • Cornuvesica : a little known mycophilic genus with a unique biology and unexpected new species 
    Marincowitz, Seonju; Duong, Tuan A.; De Beer, Z. Wilhelm; Wingfield, Michael J. (Elsevier, 2015-07)
    Little is known about the biology of the monotypic genus Cornuvesica (Microascales), apart from that isolates are notoriously difficult to culture on artificial media. A recent collection of material resembling this genus ...
  • Cryphonectriaceae associated with rust-infected Syzygium jambos in Hawaii 
    Roux, Jolanda; Nkuekam, Gilbert Kamgan; Marincowitz, Seonju; Van der Merwe, Nicolaas Albertus (Albie); Uchida, Janice; Wingfield, Michael J.; Chen, ShuaiFei (Pensoft Publishers, 2020-12-31)
    Syzygium jambos (Myrtales, Myrtaceae) trees in Hawaii are severely affected by a rust disease caused by Austropuccinia psidii (Pucciniales, Sphaerophragmiaceae), but they are commonly co-infected with species of Cryphonectriaceae ...
  • Diagnostic markers for Teratosphaeria destructans and closely related species 
    Havenga, Minette; Wingfield, Brenda D.; Wingfield, Michael J.; Dreyer, Leanne Laurette; Roets, Francois; Aylward, Janneke (Wiley, 2020-12)
    Teratosphaeria foliar pathogens cause leaf and shoot blight on Eucalyptus trees in many parts of the world. Among them, T. destructans is one of the most aggressive pathogens causing defoliation of young Eucalyptus trees ...