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231225s2002 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.2002.86.7.785
|2 doi
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|a eng
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|a Maxson-Stein, Kimberly
|e verfasserin
|4 aut
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|a Effect of Treating Apple Trees with Acibenzolar-S-Methyl on Fire Blight and Expression of Pathogenesis-Related Protein Genes
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|c 2002
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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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|2 rdacarrier
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Acibenzolar-S-methyl (ASM, Actigard 50 WG), a synthetic inducer of systemic acquired resistance (SAR) and pathogenesis-related (PR) proteins, was evaluated for the control of fire blight on apple trees in the field and for PR protein gene expression in apple seedlings in the greenhouse. Expression of putative genes related to SAR induction was elevated in ASM-treated apple seedlings 2 to 7 days after treatment; levels of PR-1 and PR-8 RNA were increased 10-fold and PR-2 RNA was increased 100-fold in ASM-treated seedlings over levels in untreated seedlings. Spurs and shoots on Jonathan trees sprayed with ASM at 75 mg a.i./liter at pink and at weekly intervals thereafter had significantly less fire blight than untreated trees, both from natural infection and following artificial inoculation with the pathogen. Less fire blight was observed on trees sprayed weekly with ASM than on trees sprayed biweekly. The severity of fire blight on inoculated shoots of Fuji apple decreased with increasing rates of ASM (0 to 300 mg a.i./liter), and ASM combined with streptomycin showed enhanced activity over ASM at 75 mg a.i./liter alone. In general, ASM was not superior to streptomycin for fire blight control, but integrating a weekly schedule of ASM, preferably at 150 mg a.i./liter, with a schedule of streptomycin designed for blossom blight control appears promising for overall improvement in fire blight control
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|a Journal Article
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1 |
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|a He, Sheng-Yang
|e verfasserin
|4 aut
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| 700 |
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|a Hammerschmidt, Raymond
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jones, Alan L
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 86(2002), 7 vom: 01. Juli, Seite 785-790
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|x 0191-2917
|7 nnns
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| 773 |
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|g volume:86
|g year:2002
|g number:7
|g day:01
|g month:07
|g pages:785-790
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| 856 |
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|u http://dx.doi.org/10.1094/PDIS.2002.86.7.785
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