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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-05-21-0961-RE
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Türkkan, Muharrem
|e verfasserin
|4 aut
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|a Characterization and Pathogenicity of Pythium-Like Species Associated with Root and Collar Rot of Kiwifruit in Turkey
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|c 2022
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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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|a Date Completed 01.04.2022
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|a Date Revised 01.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a During the period of June to October in 2018, a widespread decline was observed on kiwifruit vines in the vineyards located in the Altınordu, Fatsa, and Perşembe districts of Ordu province in Turkey. The symptoms were associated with reddish-brown rots expanding from the root to the collar with sparse off-color foliage. Based on the percentage of the total infected samples across 18 vineyards, the most common oomycete species were Globisporangium intermedium (37.1%), Phytopythium vexans (34.3%), Globisporangium sylvaticum (14.3%), Globisporangium heterothallicum (11.4%), and Pythium dissotocum (2.9%). The morphological identification of isolates was confirmed based on partial DNA sequences containing the nuclear rDNA internal transcribed spacer region gene and the mitochondrial cytochrome c oxidase subunit II gene. The optimum growth temperature and the optimum pH values of the five species ranged from 22.98 to 28.25°C and 5.67 to 8.51, respectively. Pathogenicity tests on the seedlings of kiwifruit cv. Hayward revealed significant differences in virulence among isolates. Phytopythium vexans and Globisporangium sylvaticum isolates caused severe root and collar rot resulting in seedling death, while Globisporangium heterothallicum and Globisporangium intermedium isolates had relatively lower virulence. All Globisporangium spp. and Phytopythium vexans isolates significantly decreased plant growth parameters (plant height, shoot and root dry weights, and root length); however, Pythium dissotocum caused very mild symptoms and did not affect these parameters of growth. To our knowledge, this is the first study reporting Globisporangium sylvaticum, Globisporangium heterothallicum, and Globisporangium intermedium causing root and collar rot on kiwifruit not only in Turkey but also in the world
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|a Journal Article
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|a Actinidia deliciosa
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|a ITS
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|a coxII
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|a morphology
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|a oomycetes
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|a pathogenicity
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|a Özer, Göksel
|e verfasserin
|4 aut
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|a Karaca, Gürsel
|e verfasserin
|4 aut
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|a Erper, İsmail
|e verfasserin
|4 aut
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|a Derviş, Sibel
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant disease
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|g 106(2022), 3 vom: 20. März, Seite 854-863
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|g volume:106
|g year:2022
|g number:3
|g day:20
|g month:03
|g pages:854-863
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