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231225s2016 xx |||||o 00| ||eng c |
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7 |
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|a 10.1094/PDIS-09-15-1111-RE
|2 doi
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|a eng
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| 100 |
1 |
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|a Gutierrez, A
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Evaluation of Resistance to Leaf Scald by Quantitative PCR of Xanthomonas albilineans in Sugarcane
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| 264 |
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|c 2016
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| 336 |
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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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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Leaf scald, caused by Xanthomonas albilineans, is a major sugarcane disease controlled primarily with host resistance. Because visual evaluation can be uncertain due to erratic symptom expression, a reliable resistance screening method is needed. A quantitative polymerase chain reaction (qPCR) with potential for resistance screening was used to compare bacterial populations in 31 clones at different times after inoculation, and the correlation with the visual symptom rating method was determined. Comparisons of bacterial populations quantified by qPCR and visual symptom severity ratings in systemically infected leaves showed variable results, with the highest correlation at 8 weeks after inoculation. To measure consistency, the correlation was determined among three different field experiments for data obtained with the same method at different times after inoculation. The qPCR assay was more consistent among experiments compared with visual symptom rating at 8 weeks after inoculation. Susceptible check cultivars always had high bacterial populations but the severe inoculation resulted in moderate to high bacterial populations in two of three resistant checks in some experiments. The results suggest that qPCR can provide an improved method to evaluate resistance to leaf scald in sugarcane; however, multiple experiments will be needed to accurately determine clone resistance levels
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| 650 |
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|a Journal Article
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| 700 |
1 |
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|a Garces, F F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoy, J W
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Plant disease
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|g 100(2016), 7 vom: 05. Juli, Seite 1331-1338
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|g volume:100
|g year:2016
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|g pages:1331-1338
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|u http://dx.doi.org/10.1094/PDIS-09-15-1111-RE
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