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NLM293010773 |
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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-08-17-1331-RE
|2 doi
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|a pubmed24n0976.xml
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|a (NLM)30673567
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Tran, Nga T
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Pathogenicity of Phyllosticta citricarpa Ascospores on Citrus spp
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| 264 |
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|c 2018
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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| 500 |
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|a Date Completed 28.02.2019
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|a Date Revised 28.02.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Citrus black spot, caused by Phyllosticta citricarpa, is one of the most important fungal diseases in many citrus-growing regions with hot and humid summers. Ascospores and conidia are known to contribute to epidemic development of the disease. However, pathogenicity testing has never been done for pure ascospores produced from fully characterized P. citricarpa isolates, due to the inability to induce the sexual state in vitro. Recently, an in vitro mating technique was developed to readily produce pure P. citricarpa ascospores for use in host inoculation studies. To test the pathogenicity of P. citricarpa ascospores, we inoculated Troyer citrange leaves and Murcott tangor fruit with ascospores produced in vitro from characterized P. citricarpa isolates. Typical symptoms of citrus black spot occurred. Recovery of P. citricarpa isolates from symptomatic lesions and their characterization using genetic markers enabled us to identify recombinant genotypes among the isolates recovered from ascospore inoculations and, as such, fulfill Koch's postulates for ascospores. We have also identified Troyer citrange seedlings as a potential model system for citrus black spot inoculation studies, because it allows typical symptoms of citrus black spot to be expressed with a much shorter latent period than on fruit. This will facilitate future studies of epidemiological aspects of P. citricarpa ascospores relative to conidia and improve our understanding of the citrus black spot pathosystem. The susceptibility of Troyer citrange seedlings will also facilitate experimenting with disease management methods, aimed at reducing the impact of citrus black spot
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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1 |
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|a Miles, Andrew K
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Smith, Malcolm W
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Dietzgen, Ralf G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Drenth, André
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 102(2018), 7 vom: 24. Juli, Seite 1386-1393
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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| 773 |
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|g volume:102
|g year:2018
|g number:7
|g day:24
|g month:07
|g pages:1386-1393
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|u http://dx.doi.org/10.1094/PDIS-08-17-1331-RE
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