Browsing Research Articles (Plant Pathology) by Title
Now showing items 21-40 of 43
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High diversity of Diaporthe species associated with dieback diseases in China, with twelve new species described
(Pensoft Publishers, 2018-09-17)Diaporthe species have often been reported as important plant pathogens, saprobes and endophytes on a wide range of plant hosts. Although several Diaporthe species have been recorded in China, little is known about species ... -
Hymenochaetales associated with esca-related wood rots on grapevine with a special emphasis on the status of esca in South African vineyards
(Firenze University Press, 2015)Esca disease is a problem on grapevines worldwide. This disease complex is characterised by several external and internal symptoms including foliar tiger-stripe chlorosis and necrosis, dieback, wood necrosis and white rot. ... -
In vitro screening of fungicides against phomopsis viticola and diaporthe perjuncta
(South African Society for Enology and Viticulture, 2000)Phomopsis viticola is the cause of Phomopsis cane and leaf spot disease of grapevines, while Diaporthe perjuncta is associated with bud mortality. The efficacy of nine fungicides (azoxystrobin, flusilazole, folpet, fosetyl-Al ... -
In-vitro effects of garlic extracts on pathogenic fungi Botrytis cinerea, Penicillium expansum and Neofabraea alba
(Academy of Science of South Africa, 2015)The antifungal activity of garlic extracts applied directly and through volatile release was tested against the growth of postharvest pathogens Botrytis cinerea, Penicillium expansum and Neofabraea alba. Mycelial growth ... -
Incomplete cross-resistance to folpet and iprodione in botrytis cinerea from grapevine in South Africa
(South African Society for Enology and Viticulture, 2001)The sensitivity to folpet of Botrytis cinerea isolates obtained from table grape vineyards in the Western Cape province of South Africa with a known history of dicarboximide (DC) resistance and high-schedule DC and folpet ... -
Infection of table grape bunches by alternaria alternata
(South African Society for Enology and Viticulture, 1995)Infection of table grape bunches by Alternaria alternaJa was investigated by light, fluorescence and scanning electron microscopy. Conidia in 20-μ1 drops of spore suspension germinated readily on the fruit surface and ... -
An integrated strategy for the proactive management of grapevine trunk disease pathogen infections in grapevine nurseries
(South African Society for Enology and Viticulture, 2016)The aim of this study was to compare 11 treatment regimes (TR) in grapevine nurseries in order to eradicate trunk pathogens. Grapevine propagation material was subjected to treatments before cold storage, before and after ... -
Liberomyces pistaciae sp. nov., the causal agent of pistachio cankers and decline in Italy
(Pensoft Publishers, 2018)A new canker and decline disease of pistachio (Pistacia vera) is described from Sicily (Italy). Observations of the disease and sampling of the causal agent started in spring 2010, in the area where this crop is typically ... -
Morphological and molecular identification of fungi associated with South African apple core rot
(Springer, 2018)Core rot is a major contributor to postharvest losses in apples worldwide. Pathogens most commonly associated with the disease are Alternaria spp. and Penicillium spp. Although both genera show specific morphological ... -
Mycotoxigenic Fusarium species associated with grain crops in South Africa – a review
(Academy of Science of South Africa, 2017)Cereal grains include some of the most important crops grown in South Africa and play a major role in the local economy. Maize, wheat and sorghum are extensively consumed by humans and farm animals, and are also utilised ... -
Occurrence fungi causing black foot on young grapevines and nursery rootstock plants in Italy
(Firenze University Press, 2017)Young grapevine plants with decline and wood necrosis symptoms were collected from vineyards and nurseries in the Apulia and Molise regions, Italy, from 2013 to 2015. Isolations of fungi were prepared from 45 diseased ... -
Occurrence of fruit-decaying fungi on adult male Mediterranean fruit flies (ceratitis capitata) captured in orchards and adjacent vineyards
(South African Journal of Enology & Viticulture, 2004)The occurrence of adult male Ceratitis fruit flies and their potential to transmit fungi associated with pre- and postharvest decay of fruit in natura were investigated. Sensus fruit-fly traps were installed in orchards ... -
An overview of the biology, epidemiology and control of uncinula necator (powdery mildew) on grapevine, with reference to South Africa
(South African Society for Enology and Viticulture, 2001)Grape powdery mildew, caused by Uncinula necator, is the most widespread and destructive disease of grapevine. The disease can be found in most grape-growing areas of the world, including the tropics. In South Africa, ... -
Pathogenicity associated genes in Fusarium oxysporum f. sp. cubense race 4
(Academy of Science of South Africa, 2013)Fusarium oxysporum f. sp. cubense (Foc) is a fungus that infects banana roots and causes a destructive plant disease called Fusarium wilt. Foc consists of three pathogenic races (Foc races 1, 2 and 4), classified according ... -
Pathogenicity of South African Hymenochaetales taxa isolated from esca-infected grapevines
(Firenze University Press, 2015)Little is known about the pathogenicity and etiology of Hymenochaetales taxa associated with esca in South Africa. Ten South African Hymenochaetales taxa associated with esca in grapevine were subjected to basic enzyme ... -
Phylogeny and taxonomy of the scab and spot anthracnose fungus Elsinoe (Myriangiales, Dothideomycetes)
(Elsevier, 2017)Species of Elsinoe are phytopathogens causing scab and spot anthracnose on many plants, including some economically important crops such as avocado, citrus, grapevines, and ornamentals such as poinsettias, field crops and ... -
A protocol for molecular detection of Phaeomoniella chlamydospora in grapevine wood
(Academy of Science for South Africa, 2005)PETRI DISEASE IS A SERIOUS DECLINE AND dieback disease of young grapevines. The principal causal organism, Phaeomoniella chlamydospora, is distributed mainly by infected propagation material. Pathogen detection and accurate ... -
Resistance in uncinula necator to triazole fungicides in South African grapevines
(South African Society for Enology and Viticulture, 2000)The distribution of Uncinula necator variants resistant to triadimenol, penconazole and flusilazole were determined in vineyards with suspected resistance in the regions Tulbagh, Franschhoek, Stellenbosch, De Dooms, Riebeeck ... -
Species of Diaporthe on Camellia and Citrus in the Azores Islands
(Firenze University Press, 2018)Species of Diaporthe are important plant pathogens, saprobes, and endophytes on a wide range of plant hosts. Species such as D. citri are well-known on Citrus, as agents of pre- or post-harvest infections, causing dieback, ... -
Spray deposition and control of botrytis cinerea on grape leaves and bunches : part 1 (table grapes)
(South African Society for Enology and Viticulture, 2016)Insufficient quantity but also quality of spray deposition on susceptible grapevine tissue (i.e. target sites) and favourable conditions for pathogens could lead to control failure during high disease pressure situations. To ...
