| effects of temperature, relative humidity, and desiccation of germination of nectria galligena conidia. | | 1975 | 1113738 |
| identification of regional climatic conditions favorable for development of european canker of apple. | months of the year with high risk of european canker (neonectria galligena) development in areas of the united states, chile, england, and northern ireland were determined from published data. moving-window analysis of long-term climatic data was used to classify disease risk in these areas in relation to rainfall and temperature conditions using the degree of agreement statistic. greatest agreement occurred when it both rained on >30% of days/month and there was an average of >8 h/day with temp ... | 2011 | 20795854 |
| the effect of store conditions on the rotting of apples, cv. bramley's seedling, by nectria galligena. | the log of the time interval between inoculation with nectria galligena in october and the onset of rotting in apples held in air was proportional to the deficit between the temperature of incubation and 25 degrees c, but temperature did not affect the rate of subsequent rot expansion. rots expanded equally fast whether apples were held in dry or moist air. the quantity of rotted tissue obtained after incubating inoculated apples in atmospheres containing up to 12.5% co2 increased with increasin ... | 1974 | 19280787 |
| influence of supplementary lighting during artificial scab inoculation tests in an apple breeding programm focused on partial resistance. | in 1988, the department of biological control and plant genetic resources at the walloon agricultural research centre started an apple-breeding programme using local genetic resources and modern varieties. our objective is to create high quality commercial cultivars with durable resistance to scab (venturia inaequalis), powdery mildew (podosphaera leucotricha) and canker (nectria galligena). the breeding strategy is based on crossing old apple cultivars and landraces selected as parents for low ... | 2006 | 17390863 |
| fungal catabolism of crown gall opines. | this study was conducted to determine the capacities of 37 fungi to utilize various crown gall opines as their sole carbon and nitrogen source. one strain of fusarium solani, two of cylindrocarpon destructans, and six of cylindrocarpon heteronema catabolized octopine, mannopine, octopinic acid, succinamopine, or a combination of these opines. one c. heteronema and one fusarium dimerum strain grew only on succinamopine. none of the fungal isolates had the ability to grow on nopaline. the cataboli ... | 1990 | 16348087 |
| bioactive metabolites from the fungus nectria galligena, the main apple canker agent in chile. | the phytopathogenic fungus nectria galligena bres. is the most common canker disease agent of hardwood trees. the terpenoids colletochlorin b, colletorin b, ilicicolin c, e, and f, as well as the phytotoxin alpha,beta-dehydrocurvularin have been isolated from liquid cultures of n. galligena obtained from the xylem of infected apple trees in central chile. ilicicolin c and f and alpha,beta-dehydrocurvularin were active against pseudomonas syringae with ic50 values of 28.5, 28.5, and 14.2 microg/m ... | 2005 | 16190620 |
| use of a monoclonal antibody-based immunoassay for the detection and quantification of heliscus lugdunensis colonizing alder leaves and roots. | a genus-specific monoclonal antibody, ng-cf10, raised in a previous study to the fungal pathogen nectria galligena, was found to recognize the aquatic hyphomycete heliscus lugdunensis (anamorph) and its teleomorph nectria lugdunensis. using this mab in a plate trapped antigen- elisa we could detect and determine the biomass of heliscus lugdunensis in mixed assemblages in both naturally occurring and artificially inoculated leaves and roots of alnus glutinosa trees. initial studies indicate that ... | 2001 | 12024233 |
| a complex group i intron in nectria galligena rdna. | | 1999 | 10217484 |
| intron polymorphism in small subunit rdna of nectria galligena. | pcr amplification of the small subunit (ssu) rdna gene of 40 isolates of nectria galligena revealed four length polymorphisms. pcr-rflp analysis of the ssu rdna gene divided the isolates into four categories similar, but not identical, to categories identified by southern-rflp analysis. nucleotide sequence analysis revealed that isolates in three of the four ssu rdna (18s) categories possess an intron of 363 bp, 1185 bp or 1423 bp at the ns 7 priming site. isolates in the fourth category do not ... | 1998 | 9720059 |
| a pcr primer-specific to cylindrocarpon heteronema for detection of the pathogen in apple wood. | an oligonucleotide primer (chint) was synthesised from the variable internally transcribed spacer (its) 1 region of ribosomal dna (rdna) of cylindrocarpon heteronema. pcr with primers chint and its4 (from a conserved sequence of the rdna) amplified a 470-bp fragment from several isolates of c. heteronema but not from various apple wood saprophytes. amplification of this fragment was achieved from 1-2 pg of fungal dna. these primers amplified a fragment of the same size from dna extracted from ca ... | 1993 | 8472919 |
| [production of growth substances by nectria galligena]. | | 1969 | 5386307 |
| distributional patterns of mesophilous and thermophilous microfungi in two bahamian soils. | this study focuses on the characteristics displayed by mesophilous and thermophilous microfungal populations occurring in two tropical monodominant plant communities, a cocos nucifera grove and a casuarina equisetifolia forest, that provide distinctly different edaphic conditions. the mesophilous population sampled at 25 degrees c by the dilution plate method and the thermophilous population that developed on soil plates incubated at 45 degrees c consisted of 1693 isolates representing 60 specie ... | 1975 | 1214847 |
| lytic enzymes in the autolysis of filamentous fungi. | the degrees of autolysis attained by five different genera of filamentous fungi during an incubation period of 60 days, under the same culture conditions were: 87.3% for penicillium oxalicum; 65.9% for neurospora crassa; 62.7% for polystictus versicolor; 51.7% for aspergillus niger and 23.5% for nectria galligena. n. crassa, a. niger and p. versicolor reached the end of the autolysis during this incubation period (60 days), whereas p. oxalicum and n. galligena did not. the excretion of the lytic ... | 1976 | 13304 |
| [copper as a indirect agent in the inactivation of auxin in the metabolism of nectria galligena bres]. | | 1958 | 13573703 |
| use of a climatic rule and fuzzy sets to model geographic distribution of climatic risk for european canker (neonectria galligena) of apple. | a rule-based model was developed to assess climatic risk of european canker (neonectria galligena), which is a major disease of apple in some temperate zones. a descriptive rule was derived from published observations on climatic conditions favorable for european canker development. fuzzy set theory was used to evaluate the descriptive rule quantitatively. the amount and frequency of rainfall and the average number of hours between 11-16oc/day were used as input variables whose values were match ... | 2011 | 21809979 |