Seedborne Cladosporium variabile and Stemphylium botryosum in Spinach
نویسندگان
چکیده
منابع مشابه
Characterization of L-asparagine transport systems in Stemphylium botryosum.
L-Asparagine uptake by Stemphylium botryosum is mediated by two distinct energy- and temperature-dependent transport systems. One permease is relatively specific for L-asparagine and L-glutamine and is present in nutrient-sufficient mycelium. The specific permease shows an optimum pH at 5.2, saturation kinetics (Km = 4.4 x 10(-4) M, Vmax = 1.1 mumol/g per min), competitive gradient of L-asparag...
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A total of four isolates of Stemphylium botryosum infected lentil were collected from lentil plants showing blight symptoms and grown at different areas of Bangladesh. The isolates were characterized in terms of cultural, morphological and physiological parameters. The isolates varied significantly in their cultural, morphological and physiological traits of colony color, shape, texture, conidi...
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Conidia and conidiophores from synchronously sporulating cultures of Stemphyliiim botryosum were fixed and embedded at successive intervals for examination under the electron microscope. The spore initial arises as a small bud at the tip of the conidiophore, and no discontinuity between the conidiophore wall and the spore can be detected. The single-celled bud and the tip cell of the conidiopho...
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In 2007 a new Stemphylium leaf spot disease of Beta vulgaris (sugar beet) spread through the Netherlands. Attempts to identify this destructive Stemphylium sp. in sugar beet led to a phylogenetic revision of the genus. The name Stemphylium has been recommended for use over that of its sexual morph, Pleospora, which is polyphyletic. Stemphylium forms a well-defined monophyletic genus in the Pleo...
متن کاملDetection of Seedborne Pathogens
Plant pathogens present a serious threat to seedling establishment and the potential for plant disease epidemics under greenhouse conditions is great. Hence, pathogen exclusion by detection and elimination of infested seedlots remains a requisite tactic for seedling production and disease management. Unfortunately, the numbers of contaminated seed within a lot may be low and infested seed may b...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2006
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pd-90-0137