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Armillaria; phylogeny; genetic markers; ribosomal DNA; sequence analysis; plant genetics; amplified fragment length polymorphism; taxonomy; classification; decay fungi; North America
Abstract:
... Phylogenetic and genetic relationships among 10 North American Armillaria species were analysed using sequence data from ribosomal DNA (rDNA), including intergenic spacer (IGS-1), internal transcribed spacers with associated 5.8S (ITS + 5.8S), and nuclear large subunit rDNA (nLSU), and amplified fragment length polymorphism (AFLP) markers. Based on rDNA sequence data, the nLSU region is less varia ...
... Alternaria alternata is the predominant fungal pathogen responsible for mouldy-core in Red Delicious strains of apple. This study reports on the effects of sygnum (a premix fungicide containing pyraclostrobin+nicobifen), and the sterol biosynthesis inhibitor bromuconazole on spore germination, mycelial growth, decay on detached fruits, and control of mouldy-core caused by A. alternata. Germination ...
... The decline in Ulmus pollen frequencies that occurred ca. 5000 ¹⁴C years ago before present (BP) is a key biostratigraphic marker horizon in northwest European pollen diagrams, although its causes are still a subject of debate. To investigate this event further, fungal spore analyses were carried out across the Ulmus decline at Moel y Gerddi, north Wales, United Kingdom. The Ulmus decline was in t ...
... Transfer of ¹⁵N between interacting mycelia of a wood-decomposing fungus (Hypholoma fasciculare) and an ectomycorrhizal fungus (Tomentellopsis submollis) was studied in a mature beech (Fagus sylvatica) forest. The amount of ¹⁵N transferred from the wood decomposer to the ectomycorrhizal fungus was compared to the amount of ¹⁵N released from the wood-decomposing mycelia into the soil solution as ¹⁵ ...
Siderophores are low molecular weight (<1000 D) iron chelating compounds produced by microorganisms. Production of siderophore is a device of antagonism as by virtue of the capacity of siderophore production, a microorganism competes for Fe (III) with the others. Production of siderophores by 9 di ...
... Eighty per cent of the total tomato postharvest losses in pre-packaged and loose tomato fruits in Mexico were caused by Alternaria rot and Rhizopus rot. A sensor was developed to detect Rhizopus stolonifer infected tomatoes using three relative humidity sensors. Green and red mature tomatoes were inoculated with R. stolonifer conidia on a wound and stored for 5 days. A small extractor sucked moist ...
... Biological control and induced resistance are two of the promising approaches to the control of postharvest diseases. This study was conducted to evaluate the efficacy of salicylic acid (SA) alone or in combination with an antagonistic yeast, Cryptococcus laurentii, in controlling the blue mold disease caused by Penicillium expansum on apple fruit wounds. SA alone significantly inhibited the spore ...
... The potential of termite (Coptotermes formosanus Shiraki) and fungal attacks [Fomitopsis palustris (Berkeley et Curtis) Murrill (FFPRI 0507) and Trametes versicolor (L. ex Fr.) Quel (FFPRI 1030)] against moso bamboo (Phyllostachys pubescens Mazel) were evaluated with regard to the seasonal and height-dependent changes of the free glucose and starch contents, which were measured by a newly develope ...
... The aim of this three-year study (2001-2003) was to optimize fungicide application against anthracnose (Colletotrichum acutatum) in sweet and sour cherry orchards. The experimental sprays were applied to trees receiving normal fungicide programmes (grower schedule), although without the use of dithianon, except for the first year where only the experimental applications were applied to the sour ch ...
Acacia mangium; Rhizophora; decay fungi; field experimentation; growers; heartwood; phenols; provenance; sapwood; tannins; trees; wood extractives; Indonesia
Abstract:
... Infection of heartwood by decay fungi (heartrot) is a concern for growers of Acacia mangium for solid-wood products as the incidence can be high in some regions of Indonesia. Variation of heartrot incidence for different provenances of A. mangium was determined using two field trials in Sumatra, Indonesia. In a Riau Province trial of 21 provenances, the effect of provenance was statistically signi ...
... Due to over-exploitation in the past, native conifer species in many tropical countries are hardly available anymore for wood utilization. In the last decades Costa Rica has undertaken considerable efforts to study the silvicultural characteristics of the native species of the family Podocarpaceae, in particular Podocarpus oleifolius var. macrostachyus (Parl.) Buchholz and Gray, in order to evalua ...
... A fusidane triterpene, 16-deacetoxy-7-β-hydroxy-fusidic acid (1), was isolated from a fermentation of the mitosporic fungus Acremonium crotocinigenum. Full unambiguous assignment of all 1H and 13C data of 1 was carried out by extensive one- and two-dimensional NMR studies employing HMQC and HMBC spectra. Compound 1 was tested against a panel of multidrug-resistant (MDR) and methicillin-resistant S ...