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|a 10.1094/PDIS-06-24-1332-RE
|2 doi
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|a pubmed24n1529.xml
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|e rakwb
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|a eng
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|a Abidin, Nuraizat
|e verfasserin
|4 aut
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|a Inter- and Intra-Pathogen Interactions Emanating from Coinfection with Different Fungal and Viral strains in Canola Cultivars with Differing Host Resistances
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|c 2024
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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
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|a Date Revised 10.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Few recent investigations examine coinfection interactions between fungal and viral plant pathogens. Here, we investigated coinfections between Leptosphaeria maculans and turnip mosaic virus (TuMV) in canola (Brassica napus). Different combinations of L. maculans isolate P11 and resistance breaking isolates L. maculans UWA192 and TuMV 12.1, were inoculated to three cultivars with differing pathogen resistances/susceptibilities. They were inoculated first to entire or half cotyledons 10-12 days after emergence, and second to opposite entire or half cotyledons on the same day (day 0) or 3 or 7 days afterwards. The parameters measured were L. maculans cotyledon disease index (%CDI), and TuMV systemically infected leaf symptom intensity (SI) and virus concentration (VC). Except when both day 0 inoculations were with isolate UWA192, %CDI values were supressed strongly or only weakly when isolates P11 and/or UWA192 were inoculated to plants with L. maculans single gene resistance (SGR) or polygenic resistance, respectively. However, except when isolate P11 was inoculated first and UWA192 second, these values declined after inoculation day 0 when SGR was absent. TuMV infection suppressed %CDI values, although this decrease was usually smaller following day 0 half cotyledon inoculations. When TuMV temperature sensitive extreme resistance was present and both inoculations were with TuMV, SI and VC values diminished greatly. However, the extent of this decrease was reduced when second inoculations were with L. maculans. SI and VC values were also smaller when SGR was present and second inoculations were with L. maculans. When L. maculans resistance was lacking, SI and VC values were smaller when second inoculations to entire cotyledons were with L. maculans rather than TuMV. This also occurred after second half cotyledon inoculations with isolate P11 but not isolate UWA192. Therefore, diverse inter- or intra-pathogen interactions developed depending upon host resistance, isolate combination, cotyledon inoculation approach and second inoculation timing
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4 |
|a Journal Article
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|a Causal Agent
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4 |
|a Disease management
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4 |
|a Fungi
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| 650 |
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4 |
|a Subject Areas
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|a Viruses and viroids
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| 650 |
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4 |
|a cultivar/resistance
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| 650 |
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4 |
|a oilseeds
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| 700 |
1 |
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|a You, Ming Pei
|e verfasserin
|4 aut
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1 |
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|a Barbetti, Martin John
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jones, Roger Anthony Charles
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
|d 1997
|g (2024) vom: 10. Sept.
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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|g year:2024
|g day:10
|g month:09
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|u http://dx.doi.org/10.1094/PDIS-06-24-1332-RE
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