W. J. Swart

University of the Free State

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Michael J. Wingfield

University of Pretoria

P.W. Crous

Westerdijk Fungal Biodiversity Institute

M. J. Wingfield

University of Pretoria

N. W. McLaren

University of the Free State

J. T. Blodgett

US Forest Service

Michael Tecle Tesfaendrias

University of Guelph

J.Z. Groenewald

Westerdijk Fungal Biodiversity Institute

S. Louw

University of the Free State

Willem H. P. Boshoff

University of the Free State

Z. A. Pretorius

University of the Free State

Cooperative Institutions

Forest Research

Vietnam Academy of Agricultural Sciences

Universitat de les Illes Balears

University of Palermo

University of Tartu

Westerdijk Fungal Biodiversity Institute

Hospital Universitario de Torrejón

University of the Free State

University of Pretoria

Mae Fah Luang University

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Foliar endophytes and their interactions with host plants, with specific reference to the gymnospermae

Advances in botanical research (2000)

Wilma-Marié Kriel W. J. Swart P.W. Crous

Gymnosperm

Endophyte

10.1016/s0065-2296(00)33040-3

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Citations (25)

Weevil-fungus interaction on Amaranthus hybridus (Amaranthaceae) in South Africa : short communication

African Entomology (2002)

S. Louw W. J. Swart S.J. Honiball W. Chen

Amaranth (Amaranthus spp., Amaranthaceae) is a potentially valuable food crop, with both seed (Early 1985) and vegetable (Stallknecht & Schultz-Schaeffer 1991) varieties offering excellent possibilities for improving human nutrition, especially in impoverished semi-arid regions. Increasing interest in amaranth is ascribed to its high protein and mineral content, C4 photosynthetic pathway, high genetic diversity and phenotypic plasticity, and high degree of drought tolerance (Dowton 1972; Hauptli 1977; Jain et al. 1979; Kaufmann & Haas 1983). Studies to elucidate the biotic and abiotic factors that could affect successful cultivation of amaranth as a crop in South Africa were initiated during 1995.

Amaranthaceae

Amaranthus hybridus

Amaranthus hypochondriacus

Amaranthus cruentus

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Citations (1)

Conidial morphology of sphaeropsis sapinea

Phytopathology (1991)

W. J. Swart M. J. Wingfield

Morphology

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Citations (2)

Black rot development in introduced cabbage hybrids in Ethiopia

African plant protection (2004)

Hussein Shimelis W. J. Swart

Black rot of cabbage caused by Xanthomonas campestris pv. campestris remains one of the major challenges facing cabbage production in the humid tropics. The lack of resistant cultivars and environmental conditions favourable to the pathogen often aggravate losses. A study was conducted during 1998 and 1999 to characterise cabbage genotypes and select cultivars resistant to X. campestris pv. campestris. Ten commercial cultivars of white cabbage were artificially inoculated with a virulent strain of the pathogen in the greenhouse. Cultivar Tenacity was the most resistant since it took longer for symptom expression to occur, displayed fewer lesions and had reduced lesion size. Lesion development progressed more slowly than in other tolerant cultivars such as Gideon and Gloria which displayed intermediate resistance. Spray inoculation is preferable since it mimics natural infection.

Black rot

Black spot

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Foliicolous Fungi ofEucalyptusspp. from Eastern Madagascar: Implications for South Africa

South African Forestry Journal (1995)

P.W. Crous W. J. Swart

SYNOPSIS A collection of Eucalyptus leaves from Madagascar revealed several foliicolous fungi to be present, most being new records for the country. Known foliar pathogens such as Aulographina eucalypti, Cylindrocladium quinqueseptatum, Kirramyces epicoccoides, Pseudocercospora eucalyptorum, Harknessia hawaiiensis and Mycosphaerella heimii were found associated with leaf spots. Codinea eucalypti, C. septata, Arnaudiella eucalyptorum, Mycotribulus mirabilis, Clypeophysalosporalatitans, Glomerella cingulata, Cylindrocladium candelabrum and Propolis emarginata were isolated from Eucalyptus leaf litter. Previous studies have shown all these fungi to be present in South Africa, except C. quinqueseptatum, which is not known from Africa, and M. heimii which is known only from Madagascar. M. heimii is distinguished from similar Mycosphaerella spp. occurring on Eucalyptus leaves by its symptom expression, ascospore morphology and cultural characteristics. A Latin diagnosis is provided for M. heimii to validate the name, and its anamorph described as Pseudocercospora heimii sp. nov.

Mycosphaerella

10.1080/00382167.1995.9629859

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Citations (20)

The occurrence of Lasiodiplodia theobromae on Pinus elliottii seeds in South Africa

Seed Science and Technology (1995)

A. J. Cilliers W. J. Swart Michael J. Wingfield

Seeds of Pinus elliottii from clonal seed orchards in South Africa were examined in order to determine the cause of black discolouration and reduced germination prevalent in many seedlots. Symptomatic seeds were found to contain internal fungi whereas asymptomatic seeds showed no signs of fungal colonisation. Isolations were made from immature seeds in one-year-old cones and from seeds in mature two-year-old cones. Lasiodiplodia theobromae was identified as the predominant fungus present on symptomatic seeds. It was also isolated in relatively high percentages from mature cones, even though it was not commonly isolated from one-year-old cones.

Lasiodiplodia theobromae

Colonisation

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Fungal Planet description sheets: 1042–1111

Persoonia - Molecular Phylogeny and Evolution of Fungi (2020)

P.W. Crous Michael J. Wingfield Yit‐Heng Chooi Cameron L. M. Gilchrist Ernest Lacey

Novel species of fungi described in this study include those from various countries as follows: Antarctica , Cladosporium arenosum from marine sediment sand. Argentina , Kosmimatamyces alatophylus (incl. Kosmimatamyces gen. nov.) from soil. Australia , Aspergillus banksianus , Aspergillus kumbius , Aspergillus luteorubrus , Aspergillus malvicolor and Aspergillus nanangensis from soil, Erysiphe medicaginis from leaves of Medicago polymorpha , Hymenotorrendiella communis on leaf litter of Eucalyptus bicostata , Lactifluus albopicri and Lactifluus austropiperatus on soil, Macalpinomyces collinsiae on Eriachne benthamii , Marasmius vagus on soil, Microdochium dawsoniorum from leaves of Sporobolus natalensis , Neopestalotiopsis nebuloides from leaves of Sporobolus elongatus , Pestalotiopsis etonensis from leaves of Sporobolus jacquemontii , Phytophthora personensis from soil associated with dying Grevillea mccutcheonii. Brazil , Aspergillus oxumiae from soil, Calvatia baixaverdensis on soil, Geastrum calycicoriaceum on leaf litter, Greeneria kielmeyerae on leaf spots of Kielmeyera coriacea . Chile , Phytophthora aysenensis on collar rot and stem of Aristotelia chilensis . Croatia , Mollisia gibbospora on fallen branch of Fagus sylvatica . Czech Republic , Neosetophoma hnaniceana from Buxus sempervirens . Ecuador , Exophiala frigidotolerans from soil. Estonia , Elaphomyces bucholtzii in soil. France , Venturia paralias from leaves of Euphorbia paralias . India , Cortinarius balteatoindicus and Cortinarius ulkhagarhiensis on leaf litter. Indonesia , Hymenotorrendiella indonesiana on Eucalyptus urophylla leaf litter. Italy , Penicillium taurinense from indoor chestnut mill. Malaysia , Hemileucoglossum kelabitense on soil, Satchmopsis pini on dead needles of Pinus tecunumanii . Poland , Lecanicillium praecognitum on insects' frass. Portugal , Neodevriesia aestuarina from saline water. Republic of Korea , Gongronella namwonensis from freshwater. Russia , Candida pellucida from Exomias pellucidus , Heterocephalacria septentrionalis as endophyte from Cladonia rangiferina , Vishniacozyma phoenicis from dates fruit, Volvariella paludosa from swamp. Slovenia , Mallocybe crassivelata on soil. South Africa , Beltraniella podocarpi , Hamatocanthoscypha podocarpi , Coleophoma podocarpi and Nothoseiridium podocarpi (incl. Nothoseiridium gen. nov.)from leaves of Podocarpus latifolius , Gyrothrix encephalarti from leaves of Encephalartos sp., Paraphyton cutaneum from skin of human patient, Phacidiella alsophilae from leaves of Alsophila capensis , and Satchmopsis metrosideri on leaf litter of Metrosideros excelsa. Spain , Cladophialophora cabanerensis from soil, Cortinarius paezii on soil, Cylindrium magnoliae from leaves of Magnolia grandiflora , Trichophoma cylindrospora (incl. Trichophoma gen. nov.) from plant debris, Tuber alcaracense in calcareus soil, Tuber buendiae in calcareus soil. Thailand , Annulohypoxylon spougei on corticated wood, Poaceascoma filiforme from leaves of unknown Poaceae. UK , Dendrostoma luteum on branch lesions of Castanea sativa , Ypsilina buttingtonensis from heartwood of Quercus sp. Ukraine , Myrmecridium phragmiticola from leaves of Phragmites australis. USA , Absidia pararepens from air, Juncomyces californiensis (incl. Juncomyces gen. nov.) from leaves of Juncus effusus , Montagnula cylindrospora from a human skin sample, Muriphila oklahomaensis (incl. Muriphila gen. nov.)on outside wall of alcohol distillery, Neofabraea eucalyptorum from leaves of Eucalyptus macrandra , Diabolocovidia claustri (incl. Diabolocovidia gen. nov.)from leaves of Serenoa repens , Paecilomyces penicilliformis from air, Pseudopezicula betulae from leaves of leaf spots of Populus tremuloides . Vietnam , Diaporthe durionigena on branches of Durio zibethinus and Roridomyces pseudoirritans on rotten wood. Morphological and culture characteristics are supported by DNA barcodes.

10.3767/persoonia.2020.44.11

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Citations (138)

Selective Medium for IsolatingSphaeropsis sapinea

Phytopathology (1987)

W. J. Swart

10.1094/phyto-77-1387

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Citations (8)

Relative susceptibilities to Sphaeropsis sapinea of six Pinus spp. cultivated in South Africa

European Journal of Forest Pathology (1988)

W. J. Swart Michael J. Wingfield P. S. Knox‐Davies

Abstract The relative susceptibilities to Sphaeropsis sapinea of six Pinus spp. cultivated in South Africa were investigated in growth chamber and field inoculations. The relative susceptibilities of the species tested, compare favourably with field observations by foresters over a number of years. There was some variation in pathogenicity among S. sapinea isolates on the different species.

10.1111/j.1439-0329.1988.tb00917.x

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Citations (18)

Integrated management of forest tree diseases in South Africa

Forest Ecology and Management (1994)

Michael J. Wingfield W. J. Swart

Felling

Slash Pine

10.1016/0378-1127(94)90253-4

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Citations (33)