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Characteristics Of Phytophthora Infestans Mont De Bary Isolates Collected From Potato In Canada During 1993 And 1994 Microform
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Author :Cathy I. (Cathy Irene) Chycoski Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612168367 Total Pages :190 pages Book Rating :4.1/5 (683 download)
Book Synopsis Characteristics of Phytophthora Infestans (Mont.) de Bary Isolates Collected from Potato in Canada During 1993 and 1994 [microform] by : Cathy I. (Cathy Irene) Chycoski
Download or read book Characteristics of Phytophthora Infestans (Mont.) de Bary Isolates Collected from Potato in Canada During 1993 and 1994 [microform] written by Cathy I. (Cathy Irene) Chycoski and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1995 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans, de Bary [microform] by : Dominion Experimental Farms and Stations (Canada)
Download or read book Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans, de Bary [microform] written by Dominion Experimental Farms and Stations (Canada) and published by . This book was released on 1916 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in the Biology of Phytophthora Infestans (Mont.) de Bary by : Willard Crosier
Download or read book Studies in the Biology of Phytophthora Infestans (Mont.) de Bary written by Willard Crosier and published by . This book was released on 1934 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Host Preference in Isolates of Phytophthora Infestans Collected from Potato and Tomato Crops in Colombia by : Dixon Steven Cárdenas Espitia
Download or read book Host Preference in Isolates of Phytophthora Infestans Collected from Potato and Tomato Crops in Colombia written by Dixon Steven Cárdenas Espitia and published by . This book was released on 2018* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The plant pathogen Phytophthora infestans is the causal agent of late blight disease in both potato (Solanum tuberosum) and tomato (Solanum lycopersicum) crops. Previous studies suggest that isolates of P. infestans present differences in their potato-tomato host preference. In Colombia, potato and tomato are economically important. Thus, it is important to determine if populations of P. infestans growing on potato may pose a risk to nearby tomato crops and vice versa. To achieve this, detached leaflets from one susceptible variety of potato (Diacol Capiro) and detached leaflets from one susceptible variety of tomato (Chonto Santa Cruz Kada), were inoculated with six isolates of P. infestans collected from potato and six isolates of P. infestans collected from tomato from different rural areas of Colombia. Two isolates from the United States, with known host preference, were used as controls. Lesion area and mean sporulation between the two hosts were determined seven days after inoculation for all isolates. Furthermore, the incubation period and latent period on potato and tomato were also evaluated. The results suggest that isolates that had been collected on potato could represent a risk for nearby tomato crops. However, most isolates that had been collected on tomato did not grow on potato. Information on the potato-tomato host preference of isolates of P. infestans in Colombia may be important for future field-management decisions.
Book Synopsis Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans, de Bary (Classic Reprint) by : Paul a Murphy
Download or read book Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans, de Bary (Classic Reprint) written by Paul a Murphy and published by Forgotten Books. This book was released on 2018-03-17 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans, De Bary These three processes of spore formation, germination and infection can take place only in the presence of sufficient moisture and a suitable temperature. Both spores and swarm spores are quickly killed by drought and sunlight. This partly explains why it is that, although the fungus is present in isolated plants from the time they reach the surface of the ground. It does not spread to any extent until a month, or perhaps two, later. Another reason may be that the plant is more susceptible at and after blossoming time than m its earlier stages. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis Cross-pathogenicity of Phytophthora Infestans Genotypes and Impact on Their Interaction with Potato and Tomato by : Hassna Alkher
Download or read book Cross-pathogenicity of Phytophthora Infestans Genotypes and Impact on Their Interaction with Potato and Tomato written by Hassna Alkher and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Late blight is one of the most devastating diseases on potato and tomato, which are important crops worldwide. The disease is caused by an oomycete, a fungus- like organism, Phytophthora infestans. The disease can result in a loss of an entire yield within a few days if left unchecked. Historically, late blight caused the famous Irish famine in the 1840s and continues to affect potato and tomato. The most recent pandemics of late blight that occurred in North America were caused by new P. infestans genotypes known as US-22, US-23 and US-24, and resulted in significant yield losses of both potato and tomato. In this study, isolates from infected potato and tomato plants collected in Canadian provinces during 2012 were identified, and some of the work was performed in collaboration with other scientists across Canada. Our results concluded a great shift of P. infestans populations within a single year, from US-24 and US-8 in 2011 to US-23 in 2012. Isolates of some populations showed increased insensitivity to mefenoxam as well as recombination. We confirmed an independent segregation of either Gpi, mating type or RG57 loci in a number of the recombinant isolates including CA12. Cross-pathogenicity of different isolates belonging to different genotypes were evaluated on susceptible and moderately resistant cultivars of potato and tomato. Isolates of genotypes US-8, US-11, US-22, US-23 and US-24 were assessed for their pathogenicity on both tomato and potato leaves as well as on tubers, at different days post inoculation (dpi). This allowed us to investigate their pathogenicity on both the original and alternative hosts of each tested isolate. Area under disease progress curve (AUDPC) was measured at 3, 5, and 7 dpi on plant leaves. We revealed higher infection caused by most US-24 isolates in all tested cultivars. Observation of more blight in Russet Burbank, the susceptible potato cultivar was recorded, followed by Sun Rise and Ultra Sweet, the susceptible and the moderately resistant III tomato cultivars, respectively. Among all tested cultivars, Kennebec, the moderately resistant potato cultivar showed less disease. Interestingly, tubers of both potato cultivars showed contrasting pathogenicity results when infected with the same isolates, with larger diseased areas on tuber slices of Kennebec, the moderately resistant cultivar and smaller ones on Russet Burbank, the susceptible cultivar. Among all of the tested genotypes, US-24 was the most aggressive on potato and tomato. However, variation was observed in the aggressiveness of US-24 isolates, where Pi19.1.11 and Pi4.3.11 were highly aggressive, whereas, Pi688, Pi166 were weakly aggressive on both hosts. Isolates of US-22 and US-23 genotypes, which were obtained from tomato, were more pathogenic to tomato. In an attempt to gather more information on virulence factors that determine P. infestans effects on potato and tomato, putative virulence genes (effector genes) were assessed for their role in the aggressiveness of the tested P. infestans isolates on potato and tomato. The expression of five RXLR putative effector genes of P. infestans was evaluated using qRT-PCR during the interaction of six US-24 isolates, varying in their aggressiveness with potato and tomato susceptible and moderately resistant cultivars. Gene expression was assessed 3 and 6 dpi. Among the tested candidate effector genes, DL119 was the only gene detected during the interaction between P. infestans and both plant species. A higher expression of DL119 was recorded in all tested isolates during their interaction with tomato cultivars compared to the potato ones. The expression of DL119 carried the same pattern in most of the treatments, with up-regulation at 3dpi then decrease at 6dpi. DL119 could play a role in pathogenicity since it showed higher expression during interaction of the isolates with tomato cultivars. The gene expression results are in line with our cross-pathogenicity result, which indicates greater aggressiveness of isolates of US-24 on tomato more than potato.
Book Synopsis Yansheng shoushi liaoyi xiandan sanjiao tongyuan wan yingling jing by :
Download or read book Yansheng shoushi liaoyi xiandan sanjiao tongyuan wan yingling jing written by and published by . This book was released on 190? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Characterization of Isolates of Phytophthora Infestans(Mont) de Barky Causing Late Blight Disease in Potato and Tomato by : Saptarshi Ghosh
Download or read book Molecular Characterization of Isolates of Phytophthora Infestans(Mont) de Barky Causing Late Blight Disease in Potato and Tomato written by Saptarshi Ghosh and published by . This book was released on 2011 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans (Mont.) de Bary by : Canada. Department of Agriculture
Download or read book Late Blight and Rot of Potatoes Caused by the Fungus Phytophthora Infestans (Mont.) de Bary written by Canada. Department of Agriculture and published by Department of Agriculture. This book was released on 1929 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ˜Aœ Survey on Potato Blight by : Svetlana Bajic
Download or read book ˜Aœ Survey on Potato Blight written by Svetlana Bajic and published by . This book was released on 1988 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Host Preference of Phytophthora Infestans on Potato and Tomato in Colombia by : Tania Ivonne Silva González
Download or read book Host Preference of Phytophthora Infestans on Potato and Tomato in Colombia written by Tania Ivonne Silva González and published by . This book was released on 2018* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Late blight disease, caused by the oomycete Phytophthora infestans, is the most limiting disease of potato and tomato worldwide. Differences in host preference on potato and tomato among isolates of P. infestans has been previously shown. In Colombia, tomato and potato are economically important, thus determining if isolates of P. infestans collected on potato represent a risk on tomato crops, and vice versa, is of critical concern. To assess host preference on potato and tomato, detached leaflets of three varieties of tomato (Chonto Aslam, Chonto Roble and Chonto Santa Cruz) and three varieties of potato (Perla Negra, Diacol Capiro and ICA Única) were inoculated with eight isolates of P. infestans that had been isolated from potato and eight that had been isolated from tomato in different regions of Colombia. Potato isolates were from the departments of Antioquia, Cundinamarca, and Nariño, while tomato isolates were from the departments of Antioquia, Boyacá, Caldas, and Risaralda. Lesion area and number of sporangia produced by each isolate on each host was determined seven days after inoculation. The results mainly suggest that isolates that had been collected on potato could represent a risk for tomato crops. This finding is of critical concern, given that there are no tomato varieties commercially available in Colombia, resistant or tolerant to P.infestans. Furthermore, the results confirmed that the tomato varieties evaluated (Chonto Aslam, Chonto Santa Cruz and Chonto Roble) are highly susceptible to P. infestans. On the contrary, there is not enough evidence to determine if the isolates collected on tomato represent a risk for potato crops.
Book Synopsis Return to Resistance by : Raoul A. Robinson
Download or read book Return to Resistance written by Raoul A. Robinson and published by IDRC. This book was released on 1996 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the tradition of Silent Spring, Raoul Robinson's Return to Resistance calls for a revolution. Traditional plant breeding techniques have led us to depend more and more on chemical pesticides to protect ourcrops. Return to Resistance shows gardeners, farmers, and plant breeders how to use a long-neglected technique to create hardy new plant varieties that are naturally resistant to pests and disease. Horizontal resistance breeding has been largely ignored in this century due to the popularity and apparent successes of the Mendelian geneticists. However the colossal, unrecognized failure of m.
Book Synopsis A Revision of the Dulcamaroid Clade of Solanum L. (Solanaceae) by : Sandra Knapp
Download or read book A Revision of the Dulcamaroid Clade of Solanum L. (Solanaceae) written by Sandra Knapp and published by PenSoft Publishers LTD. This book was released on 2013-05-10 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a monograph of the 47 species of the Dulcamaroid clade of the large and diverse genus Solanum. Species in the group occur in North, Central and South America, and in Europe and Asia. The group is most species-rich in Peru and Brazil, and three of the component species, Solanum laxum of Brazil, Solanum seaforthianum of the Caribbean and and Solanum crispum of Chile are cultivated in many parts of the world. All species are illustrated and a distribution map of each is provided. All names are typified and nomenclatural and bibliographic details for all typifications presented. One new species from Ecuador is described. The monograph is the first complete taxonomic treatment of these species since the worldwide monograph of Solanum done by the French botanist Michel-Felix Dunal in 1852.
Book Synopsis Physical Control Methods in Plant Protection by : Charles Vincent
Download or read book Physical Control Methods in Plant Protection written by Charles Vincent and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jointly published with INRA, Paris. Pesticide resistance is becoming more frequent and widespread with more than 500 insect species known to have become resistant to synthetic insecticides. On the other hand, consumers increasingly demand agricultural products without any pesticide residues. This book, for the first time, shows the alternative: solely physical methods for plant protection by means of thermal, electromagnetic, mechanical and vacuum processes. A glossary rounds up this extremely valuable book.
Book Synopsis Plant Relationships by : Holger B. Deising
Download or read book Plant Relationships written by Holger B. Deising and published by Springer Science & Business Media. This book was released on 2009-02-07 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the first edition of "The Mycota Vol. V – Plant Relationships" in 1997, tremendous advances in fungal molecular biology and biochemistry have taken place; and both light and electron microscopical techniques have improved considerably. These new insights led to a better understanding of the relationships between fungi and plants; and a completely revised new edition of Plant Relationships could be produced, providing an up-to-date overview on mutualistic and pathogenic interactions. In 18 chapters internationally acknowledged authors present reviews on fungal lifestyles, mechanisms of their interactions with their host plants, signal perception and transduction, and plant defense responses directed against attack by fungal pathogens. Highlighting the recent developments in fungus-plant interactions, this volume is indispensable for researchers, lecturers and students in microbiology, mycology and plant sciences, including plant pathology.
Book Synopsis Becoming irlandés by : Edmundo Murray
Download or read book Becoming irlandés written by Edmundo Murray and published by Edmundo Murray. This book was released on 2006 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Identification of Fungi by : Youssuf Gherbawy
Download or read book Molecular Identification of Fungi written by Youssuf Gherbawy and published by Springer Science & Business Media. This book was released on 2010-03-03 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fungi enjoy great popularity in pharmaceutical, agricultural, and biotechnological applications. Recent advances in the decipherment of whole fungal genomes promise an acceleration of these trends. This timely book links scientists from different parts of the world who are interested in the molecular identification of fungi combined with the exploration of the fungal biodiversity in different ecosystems. It provides a compendium for scientists who rely on a rapid and reliable detection of fungal specimens in environmental as well as clinical resources in order to ensure the benefit of industrial and clinical applications. Chapters focus on the opportunities and limits of the molecular marker-mediated identification of fungi. Various methods, procedures and strategies are outlined. Furthermore, the book offers an update of the current progress in the development of fungal molecular techniques, and draws attention to potential and associated problems, as well as integrating theory and practice.
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