Добірка наукової літератури з теми "Pycnidiospore"
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Статті в журналах з теми "Pycnidiospore"
Guo, X. W., and W. G. D. Fernando. "Seasonal and Diurnal Patterns of Spore Dispersal by Leptosphaeria maculans from Canola Stubble in Relation to Environmental Conditions." Plant Disease 89, no. 1 (January 2005): 97–104. http://dx.doi.org/10.1094/pd-89-0097.
Повний текст джерелаChen, Wei-Qun, David P. Morgan, Dan Felts, and Themis J. Michailides. "Antagonism of Paenibacillus lentimorbus to Botryosphaeria dothidea and Biological Control of Panicle and Shoot Blight of Pistachio." Plant Disease 87, no. 4 (April 2003): 359–65. http://dx.doi.org/10.1094/pdis.2003.87.4.359.
Повний текст джерелаZhang, Jin Xiu, W. G. Dilantha Fernando, and Allen G. Xue. "Daily and seasonal spore dispersal by Mycosphaerella pinodes and development of mycosphaerella blight of field pea." Canadian Journal of Botany 83, no. 3 (March 1, 2005): 302–10. http://dx.doi.org/10.1139/b05-003.
Повний текст джерелаDorrance, A. E., O. K. Miller, and H. L. Warren. "Comparison of Stenocarpella maydis Isolates for Isozyme and Cultural Characteristics." Plant Disease 83, no. 7 (July 1999): 675–80. http://dx.doi.org/10.1094/pdis.1999.83.7.675.
Повний текст джерелаGalper, S., A. Sztejnberg, and N. Lisker. "Scanning electron microscopy of the ontogeny of Ampelomyces quisqualis pycnidia." Canadian Journal of Microbiology 31, no. 10 (October 1, 1985): 961–64. http://dx.doi.org/10.1139/m85-181.
Повний текст джерелаHu, Jiahuai, Evan G. Johnson, Nan-Yi Wang, Tiago Davoglio, and Megan M. Dewdney. "qPCR Quantification of Pathogenic Guignardia citricarpa and Nonpathogenic G. mangiferae in Citrus." Plant Disease 98, no. 1 (January 2014): 112–20. http://dx.doi.org/10.1094/pdis-04-13-0465-re.
Повний текст джерелаLi, Hua, John Kuo, Martin John Barbetti, and Krishnapillai Sivasithamparam. "Differences in the responses of stem tissues of spring-type Brassica napus cultivars with polygenic resistance and single dominant gene-based resistance to inoculation with Leptosphaeria maculans." Canadian Journal of Botany 85, no. 2 (January 2007): 191–203. http://dx.doi.org/10.1139/b06-159.
Повний текст джерелаMoyo, Providence, Paul H. Fourie, Siyethemba L. Masikane, Régis de Oliveira Fialho, Lindokuhle C. Mamba, Wilma du Plooy, and Vaughan Hattingh. "The Effects of Postharvest Treatments and Sunlight Exposure on the Reproductive Capability and Viability of Phyllosticta citricarpa in Citrus Black Spot Fruit Lesions." Plants 9, no. 12 (December 21, 2020): 1813. http://dx.doi.org/10.3390/plants9121813.
Повний текст джерелаShaw, Brian D., and H. C. Hoch. "Ca2+ Regulation of Phyllosticta ampelicida Pycnidiospore Germination and Appressorium Formation." Fungal Genetics and Biology 31, no. 1 (October 2000): 43–53. http://dx.doi.org/10.1006/fgbi.2000.1223.
Повний текст джерелаMa, Zhonghua, and Themis J. Michailides. "Characterization of Botryosphaeria dothidea Isolates Collected from Pistachio and Other Plant Hosts in California." Phytopathology® 92, no. 5 (May 2002): 519–26. http://dx.doi.org/10.1094/phyto.2002.92.5.519.
Повний текст джерелаДисертації з теми "Pycnidiospore"
Morais, David. "Les déterminants des phases épidémiques précoces de la septoriose du blé (Zymoseptoria tritici) : quantité, efficacité et origine de l'inoculum primaire." Electronic Thesis or Diss., Paris, AgroParisTech, 2015. http://www.theses.fr/2015AGPT0021.
Повний текст джерелаFungal foliar diseases are a major constraint to cereal production systems. They constitute relevant models to elucidate how an epidemic begins, which is a recurrent question in plant disease epidemiology. In this thesis three of the main components of the early stages of the epidemics of septoria tritici blotch, a wheat disease caused by Zymoseptoria tritici, were studied: the quantity, the efficiency and the origin of primary inoculum. The study focused on epidemics occurring over the 2011-2013 cultural seasons in two wheat plots located close to each other in Grignon (France). The first plot, characterized by the absence of debris, was exposed to distant sources of primary inoculum, while the second plot, grown in wheat for several years, had a large amount of contaminated debris acting as a local source of primary inoculum. In the first part of the thesis, ascospore trapping using a volumetric spore trap combined with DNA quantification by qPCR allowed to quantify the inoculums present in the air above the wheat plots during the early stages of the epidemics. The limits of detection and quantification were determined, discussed and used to estimate small amounts of ascospores. Neither the local presence of contaminated debris nor the quantity of inoculum above the plots was correlated with the earliness of the epidemics. In the second part, the pathogenicity of Z. tritici ascospores and pycnidiospores was estimated on adult plants. The latent period following infections by ascospores was 60 degree-days longer than following infection by pycnidiospores. In the third part of the thesis, which aimed to identify the source of primary inoculum, two strategies were developed. The first strategy investigated changes in the genetic structure of different subpopulations collected from both wheat plots over a period of three years using neutral markers (SSR). No structure was identified, but slight differentiations in some subpopulations, consistent with the epidemiological context (nature of the reproduction cycle from which they derived, epidemic period, disease intensity) were highlighted. These results, however, did not allow to determine the origin of the primary inoculum because no difference between resident (local) and immigrant (distant) subpopulations, or a genetic discontinuity between subpopulations from the end (season n) and the beginning of epidemics (season n + 1), were identified. The second strategy compared the aggressiveness profile (sporulation capacity and latent period) of a Z. tritici population collected at the beginning of an epidemic in the monoculture wheat plot and of a resident population (ascospores ejected from debris present in the plot) and to an immigrant population (leaf lesions caused by ascospores of distant origin). The profile of the tested population, closer to that of the resident population, suggested that the epidemic was mainly initiated by primary inoculum of local origin. This case study showed that a quantitative management (reduction) of the primary inoculum would be probably inefficient, while its qualitative management, taking into account the differential adaptation of pathogen populations to their hosts, deserves to be taken into account in crop protection strategies (alternating wheat cultivars in time). Finally, the definition of the beginning and the end of an epidemic was discussed, depending if we consider an annual scale (absence of the host as a beginning or end criterion) or a multiannual scale (pathogen pressure discontinuity as the beginning or end criterion, regardless of the absence of the host)
Travadon, Renaud. "Facteurs épidémiologiques contribuant à l’adaptation des populations de Leptosphaeria maculans aux résistances spécifiques de Brassica napus : dispersion des pycnidiospores et des ascospores et progression systémique du dispersion des pycnidiospores et des ascospores et progresssion systémique du champignon." Rennes, Agrocampus Ouest, 2008. https://tel.archives-ouvertes.fr/tel-00333477.
Повний текст джерелаManagement of homa stem canker of oilseed rape,caused by Leptosphaeria maculans, primarily relies on the cultivation of resistant varieties that lack durable efficiency. Sexual reproduction enhances the evolutionary potential of the fungus submitted to the selection pressure exerted by resistant varieties by allowing acquisition and association of virulence alleles and season-to-season transmission of the disease through ascospore dispersal. We hypothesize that for small, emergent virulent populations, sexual reproduction could be restricted by the reduced mating probability of individuals and that season-to-season transmission of virulent individuals through ascopsore dispersal can be spatially limited. To test these hypotheses, we investigated (i) rain-splash dispersal of pycnidiospores, (ii) systemic growth of the fungus in stem and (iii) the spatial genetic structure of populations to infer ascospore dispersal distances. Pycnidiospores were splash-dispersed over short distances (within 40 cm from the source) from phoma leaf sports, while oilseed rape stubble carrying pycnidia constituted a potential source of primary infections
Travadon, Renaud. "Facteurs épidémiologiques contribuant à l'adaptation des populations de Leptosphaeria maculans aux résistances spécifiques de Brassica napus : dispersion des pycnidiospores et des ascospores et progression systémique du champignon." Phd thesis, Agrocampus - Ecole nationale supérieure d'agronomie de rennes, 2008. http://tel.archives-ouvertes.fr/tel-00333477.
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