multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within chrysoporthe cubensis.chrysoporthe cubensis is one of the most important pathogens of eucalyptus. based on phylogenetic evidence and geographic origin, isolates of this fungus are known to reside in distinct 'south america' and 'southeast asia' clades. in this study, reproductive isolation amongst these isolates of c. cubensis was tested using gene flow statistics for 12 polymorphic loci, and to support these data, phylogenetic affiliations based on gene trees and a multigene phylogeny were used. gene flow statistics ...201021036341
genetic control of eucalyptus urophylla and e. grandis resistance to canker caused by chrysoporthe cubensis.chrysophorte cubensis induced canker occurs in nearly all tropical and subtropical regions where eucalypts are planted, causing losses in both wood quality and volume productivity, especially so in the warmer and more humid regions of brazil. the wide inter and intra-specific genetic variability of resistance to canker among eucalyptus species facilitates the selection of resistant plants. in this study, we evaluated resistance to this pathogen in five eucalyptus grandis (g) and 15 e. urophylla ...201021637427
characterization of south african cryphonectria cubensis isolates infected with a c. parasitica hypovirus.abstract cryphonectria cubensis is the causal agent of a serious canker disease of eucalyptus spp. in tropical and subtropical parts of the world. in this study, a south african c. cubensis isolate was transfected by electroporation with a synthetic rna transcript corresponding to the full-length coding strand of the c. parasitica hypovirus (chv1-ep713). hypovirus infection resulted in pronounced morphological changes that included a striking increase in bright yellow-orange pigment production, ...200118942991
novel hosts of the eucalyptus canker pathogen chrysoporthe cubensis and a new chrysoporthe species from colombia.the pathogen chrysoporthe cubensis (formerly cryphonectria cubensis) is best known for the important canker disease that it causes on eucalyptus species. this fungus is also a pathogen of syzygium aromaticum (clove), which is native to indonesia, and like eucalyptus, is a member of myrtaceae. furthermore, c. cubensis has been found on miconia spp. native to south america and residing in melastomataceae. recent surveys have yielded c. cubensis isolates from new hosts, characterized in this study ...200616876702
aurapex penicillata gen. sp. nov. from native miconia theaezans and tibouchina spp. in colombia.conidiomata of a fungus resembling chrysoporthe cubensis, a serious canker pathogen of eucalyptus spp. (myrtaceae, myrtales) in tropical and subtropical parts of the world, was found on eucalyptus grandis in colombia. fruiting structures of the fungus could be distinguished from those of c. cubensis by their distinctly orange conidiomatal necks. this fungus also was found on several plant species native to colombia including tibouchina urvilleana, t. lepidota and miconia theaezans (melastomatace ...200616800308
molecular analysis of an endopolygalacturonase gene from a eucalyptus canker pathogen, cryphonectria cubensis.cryphonectria cubensis causes a serious eucalyptus canker disease. fungal cell wall degrading enzymes (cwdes) are important during the early stages of interaction of the fungus with eucalyptus. to improve our understanding of the molecular regulation of the interaction of eucalyptus and c. cubensis, the relevant genes involved in this interaction should be identified, cloned and studied. the aim of this study was, therefore, to clone the endopolygalacturonase (endopg) gene of c. cubensis. c. cub ...200212180135
chrysoporthe cubensis: a new source of cellulases and hemicellulases to application in biomass saccharification processes.the plant pathogenic fungus chrysoporthe cubensis was cultivated under solid state employing different substrates and the highest endoglucanase (33.84ug(-1)), fpase (2.52ug(-1)), β-glucosidase (21.55ug(-1)) and xylanase (362.38ug(-1)) activities were obtained using wheat bran as carbon source. cellulases and xylanase produced by c. cubensis showed maximal hydrolysis rate at ph 4.0 and in a temperature range of 50-60°c. all enzymatic activities were highly stable at 40 and 50°c through 48h of pre ...201223313674
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