First Report of Gray Leaf Spot Caused by Pyricularia grisea on Lolium perenne in Illinois
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First Report of Leaf Spot Caused by Alternaria tenuissima on Black Chokeberry (Aronia melanocarpa) in Korea
In July 2015, diseased leaves of black chokeberry (Aronia melanocarpa) were observed in Danyang and Gochang, Korea. The symptoms appeared as circular or irregular brown leaf spots, from which Alternaria tenuissima was isolated. The isolates were cultured on potato dextrose agar, and their morphological characteristics were observed under a light microscope. The colonies were whitish to ash colo...
متن کاملExpression Analysis of Rice Defense-Related Genes in Turfgrass in Response to Magnaporthe grisea.
ABSTRACT Magnaporthe grisea (anamorph = Pyricularia grisea) causes blast on rice (Oryza sativa) and gray leaf spot on turfgrass. Gray leaf spot is a serious disease on St. Augustinegrass (Stenotaphrum secundatum), perennial ryegrass (Lolium perenne), and tall fescue (Festuca arundinacea). Virulence assays performed in this study revealed that M. grisea collected from rice could also cause disea...
متن کاملEvaluation of Pearl Millet Grain Hybrids for Resistance to Meloidogyne spp. and Leaf Blight Caused by Pyricularia grisea
Pearl millet, Pennisetum glaucum, has potential as a grain crop in the southeastern United States. Although it is used as a food grain in India and Africa, its primary use in the United States is high quality feed for poultry and livestock (1,6,15). Hybrids adapted to the southeast should be high yielding, resistant to the rust fungus Puccinia substriata var. indica, and early maturing. The two...
متن کاملEffects of Gene and Cytoplasm Substitutions in Pearl Millet on Leaf Blight Epidemics and Infection by Pyricularia grisea Jeffrey
Wilson, J. P., and Hanna, W. W. 1992. Effects of gene and cytoplasm substitutions in pearl millet on leaf blight epidemics and infection by Pyricularia grisea. Phytopathology 82:839-842. Derivatives of the pearl millet inbred Tift 23 with substitutions for allele. Disease ratings made early in the season in the 1991 field experiment various cytoplasms and alleles conferring morphologic or devel...
متن کاملLeaf Spot of Yam Caused by Pseudophloeosporella dioscoreae in Korea
Leaf spot symptoms were frequently observed on yam plants grown in the Yeoju area in Korea during a disease survey in 2008. A total of five isolates of Pseudophloeosporella sp. were obtained from the infected leaves of yam plants. All of the isolates were identified as Pseudophloeosporella dioscoreae based on their morphological and cultural characteristics. A phylogenetic tree derived from the...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2000
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis.2000.84.10.1151b