Results 131 to 140 of about 934 (177)

Notes on the canker fungus (Nectria galligena Bres.)

Transactions of the British Mycological Society, 1927
Summary (1) One method of over-wintering of the apple “canker” fungus (Nectria galligena Bres.) is by the formation of perithecia upon shrivelled fruits. (2) The Fusarium stage of “canker” (Fusarium Willkommii Lindau) is responsible for an “eye rot” of Worcester Pearmain. (3) Evidence is brought forward to show that one case of wilting of
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Effects of Temperature, Relative Humidity, And Desiccation on Germination of Nectria Galligena Conidia

Mycologia, 1975
Conidia of Nectria galligena Bres. are the important infective propagules in the epidemiology of European apple canker in California. However, little is known about the effects of temperature and relative humidity on conidial germination and survival. Various authors (2, 3, 5) indicate that conidia are strictly water-dispersed and that several hours of
H J, Dubin, H, English
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Photoinduction des périthèces du Nectria galligena : production et activité photomorphogène des mycosporines

Canadian Journal of Botany, 1983
Mycosporin I yield of Nectria galligena Bres. in response to duration, intensity, and spectral quality of illumination were evaluated by high-performance liquid chromatography (HPLC). Duration and nature of irradiation were essential light factors for an increase of mycosporin content in the mycelium. The most effective wavelengths were 320, 370, 420,
Bertrand Dehorter, Jacques Bernillon
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Degradation of benzoic acid by Nectria galligena Bres. in vitro and in vivo

Physiological Plant Pathology, 1973
Abstract The concentration of benzoic acid in the diseased area of immature Bramley's Seedling apple fruits inoculated with Nectria galligena decreased as the arrested lesions expanded into progressive rots, and none was detected in natural canker rots. Benzoic acid was not degraded in healthy apple tissue, even after prolonged incubation.
Averil E. Brown, T.R. Swinburne
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Biochemical Changes in Cultures of Nectria galligena during the Autolytic Phase of Growth

Annals of Botany, 1970
Some biochemical changes occurring in cultures of Nectria galligena during its autolytic phase of growth have been investigated. In nitrate-grown and autolysed cultures of this fungus the degree of autolysis amounted to 57 per cent. The amount of mycelial lipids decreased continuously with the age of the culture.
R. LAHOZ, R. BELTRÁ, ANA MARIA BALLESTEROS   +2 more
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Biocontrol ofNectria galligenainfection of pruning wounds on apple shoots

Journal of Horticultural Science, 1979
SummaryThe antagonism of micro-organisms towards Nectria galligena in vitro showed poor correlation with their field performance as wound protectants. Inoculating pruning cuts with micro-organisms prior to infection by N. galligena gave protection equivalent to that obtained with benomyl, but with marked reductions in lesion length and spore output.
A. T. K. Corke, T. Hunter
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The biosynthesis of benzoic acid in Bramley's Seedling apples infected by Nectria galligena Bres

Physiological Plant Pathology, 1975
Abstract Radioactive benzoic acid was synthesized from glucose-14C and l -phenylalanine-14C in apples infected with Nectria galligena and in apples infused with protease extracted from tissue rotted by N. galligena. Phenylalanine ammonia-lyase (PAL) activity was rapidly induced in apples infused with the fungal protease but a lag phase occurred ...
T.R. Swimburne, Averil E. Brown
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Comparative Spore Morphology and Pathogenicity of Four Florida Isolates of Nectria galligena

Plant Disease, 1988
Barnard, E. L., EI-Gholl, N. E., and Gilly, S. P. 1988. Comparative spore morphology and pathogenicity of four Florida isolates of Nectria galligena. Plant Disease 72.973-976. Perithecia of Nectria ga//igena were observed in the field in association with I) stem galls on Cercis canadensis, 2) hypertrophied, roughened, and fissured bark in branch axils ...
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Bioactive Metabolites from the Fungus Nectria galligena, the Main Apple Canker Agent in Chile

Journal of Agricultural and Food Chemistry, 2005
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.
Gutiérrez, M., Theoduloz, C., Rodríguez, J., Lolas-Caneo, M., Schmeda-Hirschmann, G.   +4 more
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Microflora of apple leaf scars in relation to infection by Nectria galligena

Transactions of the British Mycological Society, 1973
The fungi present within the senescent tissue of Bramley's Seedling apple leaf scars were isolated and identified. Within a few weeks of leaf fall most scars were colonized by fungi. The most frequent species were host-specific organisms, such as Phoma limitata, Fusarium lateritium and Phomopsis mali and common saprophytes, notably Aureobasidium ...
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