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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-03-23-0583-RE
|2 doi
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|e rakwb
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|a eng
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| 100 |
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|a Nazareno, Eric S
|e verfasserin
|4 aut
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| 245 |
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|a Virulence Dynamics of the Barley Leaf Rust Pathogen (Puccinia hordei) in the United States from 1989 to 2020
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 01.01.2024
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|a Date Revised 01.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Barley leaf rust, caused by Puccinia hordei, is an important disease of barley worldwide. The pathogen can develop new races that overcome resistance genes, emphasizing the need for monitoring its virulence. This study characterized 519 P. hordei isolates collected in the United States from the 1989 to 2000 and 2010 to 2020 survey periods on 15 Rph (Reaction to Puccinia hordei) genes. We analyzed linearized infection type data to detect virulence patterns across the United States and in five geographical regions: Pacific/West (PW), Southwest (SW), Midwest (MW), Northeast (NE), and Southeast (SE). Over 32 years, we observed high mean infection scores for Rph1.a, Rph4.d, and Rph8.h; intermediate scores for Rph2.b, Rph9.i, Rph10.o, Rph11.p, and Rph13.x; and low scores for Rph3.c, Rph5.e, Rph5.f, Rph7.g, Rph9.z, Rph14.ab, and Rph15.ad. Virulence for Rph2.b, Rph3.c, Rph5.e, Rph9.z, Rph10.o, Rph11.p, and Rph13.x significantly differed between the two survey periods. From 1989 to 2020, regional patterns of virulence were found for Rph5.e, Rph5.f, Rph7.g, and Rph14.ab, while regionalities of virulence for Rph3.c, Rph9.i, Rph9.z were only observed in the 2010 to 2020 survey period. Virulence associations were also detected in the P. hordei population. Notably, isolates that were virulent to Rph5.e and Rph6.f were more likely to be avirulent to Rph7.g and Rph13.x, and vice versa. In decreasing order of effectiveness, Rph15.ad, Rph5.e, Rph3.c, Rph9.z, Rph7.g, Rph5.f, and Rph14.ab were the most effective Rph genes in the United States from 1989 to 2020. Pyramiding Rph15.ad with other widely effective Rph and adult plant resistance genes may provide long-lasting resistance against P. hordei
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|a Journal Article
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|a leaf rust
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4 |
|a pathotyping
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| 650 |
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|a regional variation
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| 650 |
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|a rust resistance
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| 650 |
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|a virulence survey
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| 700 |
1 |
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|a Matny, Oadi
|e verfasserin
|4 aut
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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 Fetch, Thomas
|c Jr
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rouse, Matthew N
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Steffenson, Brian J
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
|d 1997
|g 107(2023), 12 vom: 01. Dez., Seite 3952-3957
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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| 773 |
1 |
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|g volume:107
|g year:2023
|g number:12
|g day:01
|g month:12
|g pages:3952-3957
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| 856 |
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|u http://dx.doi.org/10.1094/PDIS-03-23-0583-RE
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