نتایج جستجو برای: uredinales
تعداد نتایج: 186 فیلتر نتایج به سال:
ABSTRACT The forest landscape of the United States has changed over time, as has public concern for the trees, water, and wildlife. Early in the history of the United States, forests were viewed as an encumbrance and an inexhaustible resource, used to meet the needs of a growing nation. Around 1900, it became clear that old approaches were not sustainable and forest pathology saw its beginning....
During the growing season of 2015, leaf specimens with yellow rust spots were collected from Salix koreensis Andersson, known as Korean willow, in riverine areas in Cheonan, Korea. The fungus on S. koreensis was identified as the rust species, Melampsora yezoensis, based on the morphology of urediniospores observed by light and scanning electron microscopy, and the molecular properties of the i...
ABSTRACT The dynamic multiline population breeding strategy integrates principles from the gene stacking and multiline approaches and allows application of the multiline strategy to cross-pollinated hybrid crops. Experiments were conducted to evaluate the effectiveness of the breeding approach. Backcross derivatives of pearl millet Tift 23DB were developed with rust resistance from 18 Burkina F...
The rust fungi (Uredinales, Basidiomycota) are an expansive and diverse group of fungal species, consisting of approximately 7000 different species in over 160 different genera. Fungi of the genus Puccinia represent a large proportion of these rust fungi, many species of which are well known for their role in causing massive yield and subsequent economic losses in agricultural crops worldwide. ...
Rust fungi (Basidiomycota, Pucciniales) are biotrophic plant pathogens which exhibit diverse complexities in their life cycles and host ranges. The completion of genome sequencing of a few rust fungi has revealed the occurrence of large genomes. Sequencing efforts for other rust fungi have been hampered by uncertainty concerning their genome sizes. Flow cytometry was recently applied to estimat...
Little is known about the nature of effective defense mechanisms in legumes to pathogens of remotely related plant species. Some rust species are among pathogens with broad host range causing dramatic losses in various crop plants. To understand and compare the different host and nonhost resistance (NHR) responses of legume species against rusts, we characterized the reaction of the model legum...
Background Blackberry (Rubus species) is one of the most widespread and devastating invasive weeds on the west coast. Himalayan blackberry (R. armeniacus), and wild evergreen blackberry (also referred to as cut-leaf blackberry or wild R. laciniatus), are major weed pests of the Pacific Northwest (PNW) and northern California. Recently, a rust fungus, Phragmidium violaceum, was discovered on Him...
INJURY to the cornea with an iron-containing foreign body usually leaves a rust ring. Most surgeons advise complete removal of any rust, but this often causes considerable trauma to the already injured cornea. Desferrioxamine ("Desferal", Ciba Laboratories) is an iron-free compound isolated from a strain of Streptomycespilosus, which binds ferric ions to form an octahedral complex ferrioxamine....
Plant diseases caused by fungi and Oomycetes represent worldwide threats to crops and forest ecosystems. Effective prevention and appropriate management of emerging diseases rely on rapid detection and identification of the causal pathogens. The increase in genomic resources makes it possible to generate novel genome-enhanced DNA detection assays that can exploit whole genomes to discover candi...
The genome size of the pine fusiform rust pathogen Cronartium quercuum f.sp. fusiforme (Cqf) was determined by flow cytometric analysis of propidium iodide-stained, intact haploid pycniospores with haploid spores of two genetically well characterized fungal species, Sclerotinia sclerotiorum and Puccinia graminis f.sp. tritici, as size standards. The Cqf haploid genome was estimated at ~90 Mb, s...
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