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Showing 1 to 20 of 40 for “"blotch"”.
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Genetics of partial resistance of wheat to septoria tritici blotch
Septoria tritici blotch (STB), caused by the fungus Mycosphaerella graminicola, is the major foliar disease of wheat in many countries. Most resistance in wheat cultivars is partial resistance, which is polygenic, or oligogenic and non-specific to particular pathogen genotypes, and hence is …
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Role of Pyrenophora teres toxins in net blotch of barley.
Pyrenophora teres, the causal agent of net blotch of barley (Hordeum vulgare L.), exists in two forms; P. teres f. teres and P. teres f. maculata. Both forms induce a combination of brown necrotic spots and extensive chlorosis in susceptible barley cultivars. Although a number of low molecular …
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Genetic Characterization and Linkage Mapping of Barley Net Blotch Resistance Genes
Net blotch is one of the most devastating diseases of barley (<i>Hordeum vulgare</i> L.) and occurs in two distinct forms, net-type net blotch (NTNB) and spot-type net blotch (STNB), caused by the fungal pathogens <i>Pyrenophora teres</i> f. sp. <i>teres</i> Smedeg. and <i>P</i>. <i>teres</i> f. …
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Studies on Dactuliochaeta Glycines and the Epidemiology of Red Leaf Blotch of Soybeans
Red leaf blotch, caused by Dactuliochaeta glycines, of soybeans (Glycine max) was studied in field trials in Zambia, Africa and the causal agent was examined under quarantine conditions in the laboratory at the University of Illinois at Urbana-Champaign (UIUC).
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Disease escape in relation to a trade off between septoria tritici blotch and yield of wheat
… relation to a trade off between septoria tritici blotch and yield of wheat. Zymoseptoria tritici, the fungus that causes Septoria tritici blotch (STB) of wheat, is spread by splash borne transfer from the base of the plant to the flag leaf. This project is on a potential new source of resistance …
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Influence of Environment, Risk of Disease Occurrence and Cultivar Stability to Stagonospora nodorum Blotch in Winter Wheat.
North Carolina State University Theses Plant Pathology.
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Genomic selection for glume blotch resistance and milling and baking quality traits in soft red winter wheat
… regions. A P. nodorum infection results in leaf blotch and glume blotch in wheat and related grass species. The development of varieties possessing resistance to P. nodorum infections is essential to minimize the fungal threat. Glume blotch infections result in shriveled low weight kernel …
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Characterization of Effector Genes in Acidovorax citrulli the Causing Agent of Bacteria Fruit Blotch Disease of Cucurbits
Bacterial fruit blotch (BFB) of cucurbits is caused by Acidovorax citrulli, a Gram-negative seedborne bacterium that can cause up to 100% fruit yield losses in the field. Currently, BFB is a major problem for the cucurbits industry worldwide. Thus far, attempts to identify resistance in cucurbit …
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Detection of Acidovorax citrulli, the Causal Agent of Bacterial Fruit Blotch Disease of Cucurbits, Prevention via Seed Treatments and Disease Resistance Genes
… to the family Cucurbitaceae. Bacterial fruit blotch (BFB) disease of cucurbits is an economically devastating plant disease that has caused an estimated loss of up to $450M on watermelon crops and $75M (worldwide) to the seed and transplant industries since 1996. Disease symptoms include …
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Sooty blotch and flyspeck disease of apple: expansion of the fungal complex in Turkey and evaluation of a warning system for the Upper Midwest
<p>Sooty blotch and flyspeck (SBFS) is a disease complex caused by nearly 80 fungal species that blemish the surface of apple fruit, reducing crop value in humid regions worldwide. The severity of SBFS is a concern for apple producers in northeastern Turkey. However, the composition of the SBFS …
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Ultrastructural cytology of peanut infected with peanut stripe virus
… of peanut stripe virus (PStV), stripe and blotch, were compared ultrastructurally in peanut (Arachis hypogaea L. 'Florigiant') at several stages of leaf expansion. Ultrathin sections of young leaves infected with either isolate of PStV revealed pinwheel inclusions attached to the cell wall …
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Characterization of Hulled and Hulless Winter Barley, Hordeum vulgare L., Through Traditional Breeding and Molecular Techniques
… (DC.) E.O. Speer f. sp. hordei Em. Marchal], net blotch (caused by Pyrenophora teres) and spot blotch [caused by Cochliobolus sativus (Ito & Kuribayashi) Drechsler ex Dastur] will greatly aid in breeding for improved resistance. Determining factors that contribute to yield differences between …
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Genetically dissect disease interactions between Parastagonospora nodorum and wheat (Triticum aestivum L.)
… and the causative agent of stagonospora nodorum blotch (SNB). P. nodorum mediates host cell death using proteinaceous effectors. Three P. nodorum effectors have been cloned: SnToxA, SnTox1 and SnTox3. SnTox3 susceptible wheat cultivars possess a dominant susceptibility allele at the Snn3-B1 …
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Pyramiding Disease Resistance Genes In Wheat (Triticum aestivum L.)
… blight (FHB), leaf rust (Lr), Septoria tritici blotch (STB) and barley yellow dwarf virus (BYDV) in wheat. Two winter and two spring wheat cultivars were crossed and seven generations of spring wheat were developed in three years. Fifty percent of the F3 and 20% of the F5 population showed low …
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Effects of the Lr34 and Lr46 rust-resistance genes on other diseases of wheat
… increased susceptibility to Septoria tritici blotch (STB), caused by Zymoseptoria tritici, in near-isogenic lines (NILs) of spring wheats Lal Bahadur (LB) and Avocet and mutant lines developed from LB, but not in an Lr34 NIL of Jupateco. A similar effect was observed in adult plants with …
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Identification and analysis of mechanisms involved in a broad-spectrum disease resistant mutant of the winter wheat cv. Guardian
… with partial resistance to stagnonospora nodorum blotch (caused by the necrotroph Stagonosporum nodorum) and septoria tritici blotch (caused by the hemibiotroph Mycosphaerella graminicola) compared to the parent plant ‘Guardian’. Analysis revealed that M66 exhibited no symptoms of infection …
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Development of Universal Biosensing Platforms Based on CRISPR/Cas12a systems
… of hepatitis B virus (HBV) and Grapevine Red-Blotch Virus (GRBV). The second developed method is a universal proximity CRISPR Cas12a assay for ultrasensitive detection of nucleic acids and proteins. The target recognition is achieved through proximity binding rather than direct CRISPR/Cas 12a …
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Grapevine Viruses and Associated Vectors in Virginia: Survey, Vector Management, and Development of Efficient Grapevine Virus Testing Methods
… associated virus (GRSPaV), and Grapevine red blotch-associated virus (GRBaV) were most commonly present. A new real-time PCR method for the detection of the V2 gene of GRBaV was developed. The resulting method takes less time for more accurate diagnostics than conventional PCR. Evaluation of …
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