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|a 10.1094/PDIS-04-23-0776-RE
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|a eng
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|a Greatens, Nicholas
|e verfasserin
|4 aut
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|a Aecial and Telial Host Specificity of Puccinia coronata var. coronata, a Eurasian Crown Rust Fungus of Two Highly Invasive Wetland Species in North America
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Completed 02.02.2024
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|a Date Revised 08.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The Eurasian crown rust fungus Puccinia coronata var. coronata (Pcc) was recently reported in North America and is widespread across the Midwest and Northeast United States. Pcc is a close relative of major pathogens of oats, barley, and turfgrasses. It infects two highly invasive wetland plants, glossy buckthorn (Frangula alnus) and reed canarygrass (Phalaris arundinacea), and could be useful as an augmentative biological control agent. We conducted large greenhouse trials to assess the host specificity of Pcc and determine any threat to cultivated cereals, turfgrasses, or native North American species. A total of 1,830 accessions of cereal crop species and 783 accessions of 110 other gramineous species were evaluated. Young plants were first inoculated with a composite uredinial inoculum derived from aecia. Accessions showing sporulation were further tested with pure urediniospore isolates. Sixteen potential aecial hosts in the families Rhamnaceae and Elaeagnaceae were tested for susceptibility through inoculation with germinating teliospores. Thirteen grass species within five genera in the tribe Poeae (Apera, Calamagrostis, Lamarckia, Phalaris, and Puccinellia) and four species in Rhamnaceae (Frangula alnus, F. californica, F. caroliniana, and Rhamnus lanceolata) were found to be susceptible to Pcc, with some species native to North America. All assessed crop species and turfgrasses were resistant. Limited sporulation, however, was observed on some resistant species within Poeae and four other tribes: Brachypodieae, Bromeae, Meliceae, and Triticeae. Among these species are oats, barley, and Brachypodium distachyon, suggesting the possible use of Pcc in studies of nonhost resistance
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|a Journal Article
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|a cereals and grains
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| 650 |
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4 |
|a fungi
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| 650 |
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4 |
|a woody ornamentals
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| 700 |
1 |
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|a Jin, Yue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Olivera Firpo, Pablo Daniel
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 108(2024), 1 vom: 22. Jan., Seite 175-181
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|x 0191-2917
|7 nnas
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|g volume:108
|g year:2024
|g number:1
|g day:22
|g month:01
|g pages:175-181
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|u http://dx.doi.org/10.1094/PDIS-04-23-0776-RE
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