Draginja Pavlic-Zupanc

University of Pretoria | UP · Forestry and Agricultural Biotechnology Institute (FABI)

The genus Botryosphaeria includes more than 200 epithets, but only the type species, Botryosphaeria dothidea and a dozen or more other species have been identified based on DNA sequence data. The taxonomic status of the other species remains unconfirmed because they lack either morphological information or DNA sequence data. In this study, types or...

The Botryosphaeriaceae is a species-rich family that includes pathogens of a wide variety of trees, including Eucalyptus spe�cies. Symptoms typical of infection by the Botryosphaeriaceae have recently been observed in Eucalyptus plantations in South China. The aim of this study was to identify the Botryosphaeriaceae associated with these symptoms....

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Acacia erioloba (camel thorn) is a native tree species distributed in the semi-arid areas of Southern Africa. In South Africa it occurs predominantly in the northern parts of the Northern Cape, North West and Limpopo Provinces, extending into a few locations of Gauteng, the Free State and Mpumalanga. Since the early 1980s, there have been reports o...

Plants and animals adapted to colonize disturbed sites might also be better invaders, but this phenomenon has not been widely considered in fungi. We investigated genetic diversity and structure amongst isolates of Neofusicoccum parvum, N. cordaticola, N. kwambonambiense and N. umdonicola that coexist sympatrically on a native tree, Syzygium cordat...

Isolates that resemble Dothiorella (Botryosphaeriaceae, Ascomycota) species were isolated from dead twigs, asymptomatic and necrotized bark of European hop hornbeam (Ostrya carpinifolia Scop.), Eurasian smoke tree (Cotinus coggygria Scop.) and common juniper (Juniperus communis L.) growing in western Slovenia and northern Italy. They were identifie...

Abstract Isolates that resemble Dothiorella (Botryosphaeriaceae, Ascomycota) species were obtained from dead twigs, asymptomatic and necrotized bark of European hop hornbeam (Ostrya carpinifolia) growing in western Slovenia and northern Italy. These isolates were identified based on anamorph morphology and phylogenetic analyses of the ITS rDNA and...

Acacia erioloba (camel thorn) is an indigenous tree species of South Africa. It was declared a protected tree, according to the National Forest Act (84) of 1998 and plays important ecological and economic roles. Death of camel thorn trees in the Kathu area of the Northern Cape Province has been reported since the early 1980s. Speculated causes incl...

Delineation of cryptic species using molecular identification tools has substantially informed our view of fungal species diversity and distribution. For example, the Neofusicoccum parvum / N. ribis species complex (Botryosphaeriaceae, Ascomycetes) was thought to include two sister species that are pathogens of woody plants. However, genealogical c...

The Botryosphaeriaceae are opportunistic pathogens of numerous woody plants, including Eucalyptus in variety of habitats. These fungi cause canker and die-back diseases on non-native Eucalyptus trees in South African plantations. These disease symptoms were observed on Eucalyptus trees grown in a Pretoria arboretum that includes 20 Eucalyptus speci...

Moringa oleifera, one of the world’s most nutritious plants, is well known for its multipurpose uses, nutritional and medicinal values, for which it is called a miracle tree. Moringa is a tropical, fast growing, drought tolerant, but frost intolerant species. Temperate climatic conditions in the Gauteng Province, with minimum winter temperatures of...

Abstract Novel species of microfungi described in the present study include the following from South Africa: Camarosporium aloes, Phaeococcomyces aloes and Phoma aloes from Aloe, C. psoraleae, Diaporthe psoraleae and D. psoraleae-pinnatae from Psoralea, Colletotrichum euphorbiae from Euphorbia, Coniothyrium prosopidis and Peyronellaea prosopidis fr...

Novel species of microfungi described in the present study include the following from South Africa: Camarosporium aloes, Phaeococcomyces aloes and Phoma aloes from Aloe, C. psoraleae, Diaporthe psoraleae and D. psoraleae-pinnatae from Psoralea, Colletotrichum euphorbiae from Euphorbia, Coniothyrium prosopidis and Peyronellaea prosopidis from Prosop...

Novel species of microfungi described in the present study include the following from South Africa: Camarosporium aloes, Phaeococcomyces aloes and Phoma aloes from Aloe, C. psoraleae, Diaporthe psoraleae and D. psoraleae-pinnatae from Psoralea, Colletotrichum euphorbiae from Euphorbia, Coniothyrium prosopidis and Peyronellaea prosopidis from Prosop...

An extensive die-back of European hop hornbeam (Ostrya carpinifolia) has been observed in Slovenia since 1997, which coincided with unusually hot and dry weather conditions. Numerous fungal isolates, belonging to Botryosphaeriaceae were isolated from the diseased trees. Closely related Botryosphaeriaceae species cannot be easily resolved due to ove...

The Botryosphaeriaceae is a species-rich family that includes pathogens of a wide variety of trees, including Eucalyptus species. Symptoms typical of infection by the Botryosphaeriaceae have recently been observed in Eucalyptus plantations in South China. The aim of this study was to identify the Botryosphaeriaceae associated with these symptoms. I...

Unusual and extensive dieback of European hop hornbeam (Ostrya carpinifolia) has been observed in western Slovenia and northern Italy in recent years, when extreme drought and higher temperatures were recorded. A preliminary study identified Botryosphaeria dothidea as a potential causative agent of the dieback. Further characterization of intra- an...

The Botryosphaeriaceae is a well-known fungal family that has been studied for more than 150 years. Many species in this group are important pathogens of trees globally. In southern Africa only ten species were known a decade ago, mostly on non-native hosts. During the past decade surveys on native trees in this region, using modern molecular tools...

Neofusicoccum parvum and N. ribis are closely related species whose identities often have been confused. These fungal plant pathogens were identified recently as the most abundant species of Botryosphaeriaceae (Ascomycetes) isolated from native Syzygium cordatum trees in South Africa. In another study using multiple gene genealogies from five nucle...

apparently persist in this state for extended periods of time. Under conditions of stress, these fungi cause many different disease symptoms on Eucalyptus, of which stem and branch cankers and die-back are the most prominent. Given their cryptic, endophytic nature, the Botryosphaeriaceae are easily overlooked when moving seeds and plants around the...

Neofusicoccum parvum and N. ribis (Botryosphaeriaceae, Ascomycetes) are closely related, plant pathogenic fungi with a world-wide distribution on a wide range of woody hosts. Species boundaries in the N. parvum/N. ribis complex have eluded definition, despite the application of various tools for characterisation. In this study, we test the hypothes...

In this study seven new species of the Botryosphaeriaceae are described from baobab (Adansonia gibbosa) and surrounding endemic tree species growing in the Kimberley region of northwestern Australia. Members of the Botryosphaeriaceae were predominantly endophytes isolated from apparently healthy sapwood and bark of endemic trees; others were isolat...

The Botryosphaeriaceae cause endophytic infections of leaves and bark of various trees, including Eucalyptus, and they apparently persist in this state for extended periods of time. Under conditions of stress, these fungi cause many different disease symptoms on Eucalyptus, of which stem and branch cankers and die-back are the most prominent. Given...

Eight species of the Botryosphaeriaceae (canker and dieback pathogens) were identified on native Syzygium cordatum in South Africa, based on anamorph morphology, ITS rDNA sequence data and PCR-RFLP analysis. The species identified were Neofusicoccum parvum, N. ribis, N. luteum, N. australe, N. mangiferae , Botryosphaeria dothidea, Lasiodiplodia gon...

Botryosphaeria spp. are common and widely distributed pathogens on many economically important crops, including forest tree species. These fungi cause a wide variety of symptoms on trees of all ages, but are mostly associated with canker and die-back of branches and main stems. As disease agents, Botryosphaeria spp. are often encountered in their a...