Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"soft rot"”.
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Erwinia carotovora extracellular proteases: characterization and role in soft rot
<u>Erwinia carotovora</u> subsp. <u>carotovora</u> (Ecc) strain EC14, a Gram-negative bacterium, causes soft rot on several crops, including potato. Maceration of potato tuber tissue is caused by secreted pectolytic enzymes. Other cell-degrading enzymes may also have roles in pathogenesis, …
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Gene regulation in a pathogen-plant interaction: soft rot erwinias versus potato tubers
Erwinia soft rot is a widespread disease destructive to numerous important crop plants. Damage to plants is primarily due to celldegrading enzymes (CDEs) secreted by the bacteria. I am interested in potato (Solanum tuberosum) soft rot because it is of agricultural importance and it represents an …
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The Effects of Nitrogenous Compounds on Decay of Wood by Soft-Rot Fungi
… as free amino acids, those bound in soluble proteins and those bound in insoluble protein, The amino acid content of the soft-rot organism, Chaetomium globosum Kunze ex Fr., was also determined and found to be similar in amino acid range and ratio, but lower in magnitude than the timbers. The …
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Soft rot Enterobacteriaceae-molecular detection and biocontrol under in vitro and in vivo conditions
Destructive soft rot Pectobacteriaceae are pathogenic to a number of vegetables, fruits and ornamentals crops and cause high economic losses in the field and during storage. An increasing number of reports in recent years illustrate the losses caused by Pectobacterium and Dickeya in Europe, and a …
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Factors affecting susceptibility to - and management of - postharvest soft rot of sweetpotatoes caused by Rhizopus stolonifer.
Studies were undertaken to explore the relationship of R. stolonifer susceptibility with preharvest growing conditions and postharvest handling of sweetpotatoes. Additional studies were also completed to identify effective decay control products. A three-year study investigated the effect of …
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A study of Bacillus aroideae, Townsend, the cause of a soft rot of tomato, and B. carotovorus Jones
… there developed a considerable amount of a soft rot of tomatoes. This occurred in experimental plots which were designated to study the control of septoria leaf blight, and the soft rot of the fruit developed into an important factor. In describing these experiments Fromme (2) states: …
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Molecular mechanisms of pathogenesis incited by Erwinia carotovora subsp. carotovora
Erwinia carotovora subsp. Carotovora (Ecc) incites soft-rot on many plants. It is believed that soft-rot is due to the concerted activity of extracellular enzymes. Recombinant DNA techniques were used to study the molecular basis of pathogenesis incited by Ecc. Specifically, a clone library of Ecc …
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An investigation of the durability of UK grown softwood distribution poles CCA-treated by sap-displacement
… to have a significant adverse effect on protection of the poles or to act as a soil pollution hazard.<br/><br/>Exposure of pole sections to the natural soil microflora in the accelerated decay system resulted in untreated control sections suffering extensive soft rot decay of their curved …
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Synergistic effect on wood degradation by interspecific interactions of white and brown rot fungi
Wood-rotting fungi play an important role in carbon and nitrogen cycles in nature. They have different strategies for wood degradation and utilization of nutrients. Traditionally, wood-rotting fungi have been classified as white rot, brown rot, and soft rot fungi based on the differences in their …
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Studies of the interactions of CCA and ACA preservative treated wood with soil
… series of leaching and soil burial studies. The softwoods Scots pine (<i>Pinus sylvestris</i>, L.), Sitka spruce (<i>Picea sitchensis</i>, Carr) and the hardwood lime (<i>Tilia vulgaris</i>, Hayne) were used exclusively.<br/><br/>Copper losses from both types of preservative treated wood were …
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Evolution of a gene for pathogenicity: endo-pectate lyase
Erwinia carotovora subsp. Carotovora (Ecc) and Erwinia carotovora subsp. Atroseptica (Eca) are plant pathogenic bacteria that cause soft rot disease of many plant species and blackleg disease of potatoes, respectively. Ecc and Eca attack plants by means of a group of extracellular plant …
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The treatment of bacterial disease of plants by bacteriophage coated nanoparticles
… nanoparticles for the control of tomato plant soft rot, caused by Pectobacterium carotovorum, as a model system.Scottish crops were used as a source to isolate new bacteriophages,followed by triple isolation of single plaques formed after infection. Using the enrichment technique, that uses …
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Physiological and genetic evidence for an OmpB signal transduction system in Erwinia chrysanthemi
… systems usually employ the use of two different proteins, a sensor protein and its cognate response regulator. Some bacteria can survive fluctuations in medium osmolarity through the use of a two component signal transduction system. In Escherichia coli and Salmonella typhimurium this two …
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Ecological studies of fungi growing on isolated wood
… cellulolytic fungi including thermophilous and soft rot fungi is submitted. The influence of insolation on the temperature-and moisture ranges in wood was investigated. Temperatures up to 160C above ambient were recorded as a result of insolation and data is submitted on the diurnal temperature …
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Ecological Studies of Fungi Growing on Insolated wood
… cellulolytic fungi including thermophilous and soft rot fungi is submitted. The influence of insolation on the temperature and moisture ranges in wood was investigated. deere up to 16°C above ambient were recorded as a result of insolation and data is submitted on the diurnal temperature cycle …
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The role of actinomycetes in the biodeterioration of wood
… weight losses in lime and consistently produced soft rot cavities in this timber.<br/><br/>An isolation technique using comminution, homogenisation, and a high temperature pretreatment was developed to quantify actinomycete presence in wood and it was found that 10<sup>8</sup> actinomycete …
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A Fungal secretome tailored to enable a radical (oxidative) wood decay mechanism in brown rot fungi
… classified by the physical properties of the rotted wood as white, brown, and soft rot fungi – with brown and white rot fungi being the most efficient. These properties are correlated with important genetic and regulatory differences that distinguish the different modes of decay. Recently, it …
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Elucidation of the osmoregulatory locus, ompRZ, in Erwinia chrysanthemi
… sensory systems, comprising of sensor proteins interacting with their cognate response regulator proteins. To survive fluctuating environments such as osmotic conditions, certain bacterial species employ the ompR-envZ (ompB) two-component system to monitor and respond to the osmotic cue. …
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Identification of novel regulators of the necrosis-inducing protein (Nip) and carbapenem antibiotic production in the phytopathogen Pectobacterium
… is a Gram-negative phytopathogen that causes soft rot and blackleg disease of potatoes. It produces plant cell wall degrading enzymes (PCWDEs) and is capable of swimming and swarming motility. Some strains also produce a simple β-lactam carbapenem antibiotic, 1-carbapen-2-em-3-carboxylic acid. …
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