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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-01-18-0167-RE
|2 doi
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|a pubmed24n0975.xml
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Rooney-Latham, S
|e verfasserin
|4 aut
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|a Phytophthora Species Are Common on Nursery Stock Grown for Restoration and Revegetation Purposes in California
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 02.08.2019
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|a Date Revised 02.08.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Phytophthora tentaculata was detected for the first time in North America in 2012 in a nursery on sticky monkeyflower plant (Diplacus aurantiacus) and again in 2014 on outplanted native plants. At that time, this species was listed as a federally actionable and reportable pathogen by the USDA. As a result of these detections, California native plant nurseries were surveyed to determine the prevalence of Phytophthora species on native plant nursery stock. A total of 402 samples were collected from 26 different native plant nurseries in California between 2014 and 2016. Sampling focused on plants with symptoms of root and crown rot. Symptomatic tissue was collected and tested by immunoassay, culture, and molecular techniques (PCR). Identifications were made using sequences from the internal transcribed spacer (ITS) rDNA region, a portion of the trnM-trnP-trnM, or the atp9-nad9 mitochondrial regions. Phytophthora was confirmed from 149 of the 402 samples (37%), and from plants in 22 different host families. P. tentaculata was the most frequently detected species in our survey, followed by P. cactorum and members of the P. cryptogea complex. Other species include P. cambivora, P. cinnamomi, P. citricola, P. hedraiandra, P. megasperma, P. multivora, P. nicotianae, P. niederhauserii, P. parvispora, P. pini, P. plurivora, and P. riparia. A few Phytophthora sequences generated from mitochondrial regions could not be assigned to a species. Although this survey was limited to a relatively small number of California native plant nurseries, Phytophthora species were detected from three quarters of them (77%). In addition to sticky monkeyflower, P. tentaculata was detected from seven other hosts, expanding the number of associated hosts. During this survey, P. parvispora was detected for the first time in North America from symptomatic crowns and roots of the nonnative Mexican orange blossom (Choisya ternata). Pathogenicity of P. parvispora and P. nicotianae was confirmed on this host. These findings document the widespread occurrence of Phytophthora spp. in native plant nurseries and highlight the potential risks associated with outplanting infested nursery-grown stock into residential gardens and wildlands
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|a Journal Article
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|a Blomquist, C L
|e verfasserin
|4 aut
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|a Kosta, K L
|e verfasserin
|4 aut
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|a Gou, Y Y
|e verfasserin
|4 aut
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| 700 |
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|a Woods, P W
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 103(2019), 3 vom: 11. März, Seite 448-455
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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| 773 |
1 |
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|g volume:103
|g year:2019
|g number:3
|g day:11
|g month:03
|g pages:448-455
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|u http://dx.doi.org/10.1094/PDIS-01-18-0167-RE
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