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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-09-20-2090-RE
|2 doi
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|a pubmed24n1113.xml
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Rivedal, Hannah M
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Identity and Pathogenicity of Fungi Associated with Root, Crown, and Vascular Symptoms Related to Winter Squash Yield Decline
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| 264 |
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
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| 500 |
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|a Date Completed 06.06.2022
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|a Date Revised 06.06.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Winter squash (Cucurbita maxima cultivar Golden Delicious) produced in Oregon's Willamette Valley for edible seed production has experienced significant yield losses because of a soilborne disease. The symptoms associated with this disease problem include root rot, crown rot, and vascular discoloration in the stems, leading to a severe late season wilt and plant collapse. Through field surveys, Fusarium oxysporum, F. solani, F. culmorum-like fungi, Plectosphaerella cucumerina, and Setophoma terrestris were identified to be associated with diseased tissues, and each produced symptoms of root rot, crown rot, or stem discoloration in preliminary pathogenicity trials. In this study, 219 isolates of these species were characterized by molecular identity analyses using BLAST of the internal transcribed spacer and translation elongation factor 1 alpha genomic regions and by pathogenicity testing in outdoor, large-container trials. Molecular identity analyses confirmed the identity of isolates at 99 to 100% similarity to reference isolates in the database. In pathogenicity experiments, F. solani produced the most severe symptoms, followed by F. culmorum-like fungi, F. oxysporum, P. cucumerina, and S. terrestris. Some treatments of mixed-species inoculum produced symptom severity greater than what was expected from individual species. In particular, the mixture of F. culmorum-like fungi, F. oxysporum, and P. cucumerina and the mixture of F. culmorum-like fungi, F. solani, and S. terrestris had symptom ratings as high as that of F. solani by itself. Results indicate that this soilborne disease is caused primarily by Fusarium solani, but interactions between the complex of F. solani, F. culmorum-like fungi, F. oxysporum, and P. cucumerina can exacerbate disease severity
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| 650 |
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4 |
|a Journal Article
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| 650 |
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4 |
|a Fusarium
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| 650 |
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4 |
|a cucurbits
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| 650 |
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4 |
|a disease diagnosis
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| 650 |
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4 |
|a etiology
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| 650 |
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4 |
|a fungi
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| 650 |
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4 |
|a pathogenicity
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| 650 |
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4 |
|a soilborne
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| 650 |
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4 |
|a vegetables
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| 700 |
1 |
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|a Tabima, Javier F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stone, Alexandra G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Johnson, Kenneth B
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 106(2022), 6 vom: 16. Juni, Seite 1660-1668
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|x 0191-2917
|7 nnns
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|g volume:106
|g year:2022
|g number:6
|g day:16
|g month:06
|g pages:1660-1668
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|u http://dx.doi.org/10.1094/PDIS-09-20-2090-RE
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