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231225s2001 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.2001.85.2.220
|2 doi
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|a DE-627
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|a eng
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| 100 |
1 |
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|a Lee, H K
|e verfasserin
|4 aut
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| 245 |
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|a A PCR-Based Assay to Detect Rhynchosporium secalis in Barley Seed
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| 264 |
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|c 2001
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|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 09.03.2022
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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| 520 |
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|a A polymerase chain reaction (PCR)-based diagnostic assay was developed to detect Rhynchosporium secalis, the barley scald fungus, in barley seed. Species-specific primers were designed based on sequence data of a region consisting of the 5.8S RNA gene and internal transcribed spacers 1 and 2 of R. secalis. The sequenced regions showed 100% homology between the two R. secalis isolates and 93% homology between R. secalis and R. orthosporum. Five sets of synthesized oligonucleotide primers were tested for their specificity using 29 isolates of R. secalis of diverse geographic origins and from different barley cultivars. In addition, DNA extracts from 22 species of microbes either taxonomically related to or from the same niche as R. secalis were tested as negative controls. Among five sets of primers, a primer set, RS8 and RS9, was selected for use in detecting R. secalis because it amplified a 264-bp fragment from the DNA of all R. secalis isolates but not the DNA from other species used for validation of the specificity of this primer set. This primer set was also used to detect R. secalis in barley seed and successfully amplified the predicted size of the DNA fragment in the infected material. PCR detection of as little as 1 to 10 pg of R. secalis DNA was possible. The method described here requires 1 day for completion, compared to 10 days required for the cultural method
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| 650 |
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|a Journal Article
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| 700 |
1 |
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|a Tewari, J P
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Turkington, T K
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 85(2001), 2 vom: 31. Feb., Seite 220-225
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|g volume:85
|g year:2001
|g number:2
|g day:31
|g month:02
|g pages:220-225
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|u http://dx.doi.org/10.1094/PDIS.2001.85.2.220
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