Download or read book Common Bacterial Blight and Halo Blight written by Carrie H. Wohleb and published by . This book was released on 2011 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bacterial Blights of Common Bean written by Michael Lennon O'Leary and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Common bean is a genetically diverse crop that is a staple food in many regions of the world. However, common bean is affected by numerous diseases that can negatively impact production. There are three major bacterial diseases of common bean: halo blight, caused by Pseudomonas syringae pv. phaseolicola (Psp), bacterial brown spot, caused by P. syringae pv. syringae (Pss), and common bacterial blight, caused by Xanthomonas axonopodis pv. phaseoli (Xap) and X. fuscans subsp. fuscans (Xff). Disease symptoms caused by Psp and Pss can be difficult to distinguish in certain common bean genotypes and under certain environmental conditions. Precise pathogen identification is important in terms of potential yield loss and the need for disease management. Symptoms with characteristics of both halo blight and bacterial brown spot were observed on a newly developed cultivar of dark red kidney beans in Wisconsin, and pseudomonads were recovered from all samples. To determine the etiology of this disease, a method of identification was developed that involved 1) PCR with primers specific for toxin genes utilized by Psp and Pss, 2) the ability to induce a hypersensitivity response in tobacco leaves, and 3) symptoms induced on common bean. When applied to the unusual disease phenotype on this dark red kidney variety most of these were atypical symptoms of halo blight. This method was then successfully applied to identify bacterial brown spot in disease samples from Oregon, and halo blight and bacterial brown spot in disease samples from Turkey. Xap and Xff strains induce identical symptoms on common bean but are genetically distinct species. Strains of Xap and Xff can be differentiated in culture by the production of a brown diffusible pigment by Xff strains. However, some Xap strains, particularly those that originate from East Africa, are more genetically related to Xff strains than to the globally predominant Xap strains, and show pathogenic variability on certain cultivars, e.g., Andean versus Middle American. To better understand the genetic diversity among Xap and Xff strains, the complete genome sequences of three globally predominant Xap strains, two East African Xap strains, three Xff strains, and one Xanthomonas spp. strain that is associated with common bean but not pathogenic were determined using long-read sequencing technology. Whole-genome alignment revealed differences in chromosome organization between Xap strains, East African Xap strains, and Xff strains; additionally, mobile element content is variable among these strains. Conserved genetic factors, e.g. conserved plasmids and type III secreted effector proteins, some of which may have been horizontally acquired by Xap and Xff strains, were identified. The brown diffusible pigment produced by Xff strains is the result of an oxidation product of homogentisic acid, which is referred to as pyomelanin. In the tyrosine catabolism pathway, homogentisic acid is produced by 4-hydroxyphenylpyruvate dioxygenase (HPPD) and converted to 4-maleylacetoacetate by homogentisate dioxygenase (HmgA). The complete genome sequences of Xap and Xff strains revealed that Xff strains have a conserved mutation in the hmgA gene, whereas Xap strains have an intact hmgA gene. HPPD deletion mutants in an Xff strain resulted in loss of pyomelanin (brown pigment) production, whereas deletion of hmgA in two Xap strains resulted in brown pigment production, making Xap colonies resemble those of wild-type Xff strains. Additionally, complementing a wild-type Xff strain with a functional hmgA gene eliminated visible pyomelanin accumulation. Finally, virulence of a Xff HPPD and a Xap hmgA deletion mutant was assessed on twelve bean cultivars, including both Andean and Middle American gene pools, with different levels of disease resistance to common bacterial blight. There was no significant differences in virulence between brown pigment mutants and wild-type strains.

Download or read book Bean Diseases written by William John Zaumeyer and published by . This book was released on 1962 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Epidemiology and Control of Halo Blight in Idaho written by and published by . This book was released on 1975 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compendium of Bean Diseases written by Robert Hall and published by American Phytopathological Society. This book was released on 1991 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infectious diseases: Fungal diseases of subterranean parts; Fungal diseases of aerial parts; Diseases caused by bacteria; Diseases caused bynematodes; Diseases caused by viruses; Diseases caused by mycoplasmalike organisms. Noninfectious diseases. Seed Quality.

Download or read book Chemical Control of Bean Common and Fuscous Bacterial Blights written by David Michael Weller and published by . This book was released on 1975 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bean Diseases and Their Control written by William John Zaumeyer and published by . This book was released on 1958 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inheritance Studies of Halo Blight Pseudomonas Phaseolicola Burk Dowson in Two Varieties of Beans written by Elton Oliveira dos Santos and published by . This book was released on 1970 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study involved the comparison of two dry bean varieties and their progenies in response to two different methods of inoculation with Pseudomonas phaseolicola (Burk.) Dowson, and the inheritance patterns among segregating lines. Great Northern UI #1 was used as the resistant parent and California Red Kidney was used as the susceptible parent.

Download or read book Farmers Bulletin written by and published by . This book was released on 1949 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on Factors Affecting Symptom Development in Halo Blight of Bean written by Felix Henry Mahr and published by . This book was released on 1978 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pathogenic Variation for the Halo Blight Bacterium and Mapping of Loci for Multiple Diseases in Common Bean written by Hearth Ariyarathne and published by . This book was released on 1997 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by and published by . This book was released on 1944 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Monographic Study of Bean Diseases and Methods for Their Control written by William John Zaumeyer and published by . This book was released on 1957 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bean Production Problems in the Tropics written by Howard F. Schwartz and published by CIAT. This book was released on 1989 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first section reviews trends of bean production and constraints in Latin America and Africa. The second section covers fungal diseases. The third section, bacterial diseases. The fourth section, viral and mycoplasma diseases. The fifth section, insect pests. The last section, other bean production constraints, that is, nutritional disorders, nematodes, seed pathology, and additional problems.

Download or read book Bacterial Blight of Lima Bean written by Maung Mya Thaung and published by . This book was released on 1956 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive and Molecular Phytopathology written by Yuri Dyakov and published by Elsevier. This book was released on 2007-01-09 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of information on successive steps of molecular 'dialogue' between plants and pathogens. It additionally presents data that reflects intrinsic logic of plant-parasite interactions. New findings discussed include: host and non-host resistance, specific and nonspecific elicitors, elicitors and suppressors, and plant and animal immunity. This book enables the reader to understand how to promote or prevent disease development, and allows them to systematize their own ideas of plant-pathogen interactions.* Offers a more extensive scope of the problem as compared to other books in the market* Presents data to allow consideration of host-parasite relationships in dynamics and reveals interrelations between pathogenicity and resistance factors* Discusses beneficial plant-microbe interactions and practical aspects of molecular investigations of plant-parasite relationships* Compares historical study of common and specific features of plant immunity with animal immunity

Download or read book Studies on Halo Blight a Bacterial Disease of Oats written by S. Goto and published by Forgotten Books. This book was released on 2018-09-11 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Studies on Halo Blight, a Bacterial Disease of Oats: A Thesis Effect of soil environmental conditions on primary infec'tion 00000000 0. 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.