منابع مشابه
Microcyclic rusts of hollyhock (Alcea rosea)
Rust fungi infecting hollyhock and other plants in Malveae are frequently intercepted at ports of entry to the USA, particularly Puccinia malvacearum and P. heterogenea. These two species can be difficult to distinguish and can be further confused with other, less common species of microcyclic rust fungi infecting hollyhock: P. heterospora, P. lobata, P. platyspora, and P. sherardiana. Molecula...
متن کاملInfluence of nutritional factors on xanthan production by Xanthomonas malvacearum
Xanthan gum is an extra cellular microbial hetero polysaccharide of great commercial importance, secreted by the yellow pigmented bacterium Xanthomonas malvacearum. Polysaccharides are macromolecules with diverse applications in the food, chemical, energy production and pharmaceutical Industries. The nutrient factors influencing the production of Xanthan polymer by Xanthomonas malvacearum isola...
متن کاملRaces of Puccinia striiformis f
Stripe rust of barley, caused by Puccinia striiformis f. sp. hordei (PSH), occurred mainly in California, Idaho, Oregon, and Washington and caused localized damage to barley crops. Growing cultivars with high-temperature, adult-plant resistance and the cropping system contributed to the low level of stripe rust. Stripe rust samples were collected from the four states and tested under controlled...
متن کاملTracking down worldwide Puccinia psidii dispersal
Background Puccinia psidii causes rust disease on many host species in the Myrtaceae [1]. First reported in 1884 on guava in Southern Brazil [2], the rust has since been detected on several myrtaceous in South America, Central America, Caribbean, Mexico, USA: in Florida, California, and Hawaii. More recently, P. psidii was reported in Japan infecting M. polymorpha[3]. Of special note is that a ...
متن کاملWheat leaf rust caused by Puccinia triticina.
UNLABELLED Leaf rust, caused by Puccinia triticina, is the most common rust disease of wheat. The fungus is an obligate parasite capable of producing infectious urediniospores as long as infected leaf tissue remains alive. Urediniospores can be wind-disseminated and infect host plants hundreds of kilometres from their source plant, which can result in wheat leaf rust epidemics on a continental ...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1894
ISSN: 0006-8071
DOI: 10.1086/327122