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231225s2005 xx |||||o 00| ||eng c |
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|a 10.1094/PD-89-0342B
|2 doi
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|a pubmed24n0980.xml
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|a (DE-627)NLM294203184
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|a (NLM)30795371
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Černi, S
|e verfasserin
|4 aut
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| 245 |
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|a Occurrence of Stem-Pitting Strains of Citrus tristeza virus in Croatia
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| 264 |
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|c 2005
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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
|b cr
|2 rdacarrier
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Citrus is grown in Croatia (approximately 1,500 ha of citrus groves) on the Dalmatian Coast and Islands between 42 and 43°30'N. The major species, Citrus unshiu Marc. (Satsuma mandarin), is grafted on trifoliate rootstock. The presence of Citrus tristeza virus (CTV) in Satsumas in the Neretva Valley Region was previously reported (3). During the course of a biomolecular characterization of isolates from Croatia, 15 budsticks were collected from field-infected, enzyme-linked immunosorbent assay (ELISA)-positive sources during the autumn of 2003 near Kaštela, Split, Metković (Neretva Valley), and on the island of Vis. Isolates were propagated by graft transmission to Madam Vinous sweet orange (SwO) and maintained in an insect-proof greenhouse at 21 to 33°C. Eight months later, the bark of terminal twigs was peeled off, and the wood was examined for the occurrence of pits. Typical tristeza stem-pitting (SP) was observed in four isolates originating from cvs. Fukumoto navel, Washington navel, and Ichimaru Satsuma and C. wilsonii. The bark from the infected sources was analyzed using immunocapture reverse transcription-polymerase chain reaction (RT-PCR) with primers CTV1 and CTV10 (1), targeting the whole coat protein (CP) gene. The PCR products of the expected size (669 nucleotides) were obtained and TA cloned (pGEM-T Easy Vector; Promega, Madison, WI) in E. coli cells. Thirty-two clones harboring the CTV CP gene were sequenced. Two of the SP isolates contained four genomic variants that differed an average of 2.0% from the severe SwO SP strains SY568 and Nuaga (4) from California and Japan, respectively. The other two SP isolates contained four variants that differed as little as 1.6% from the severe SwO SP from India, CTV-Puna, and CTV-Bangalore (2). The net average distance between these two clusters of sequences is 5.2%. One sequence from each of the four SP isolates was deposited in GenBank (Accession Nos. AY791841 to AY791844). These findings were confirmed by direct observation of SP symptoms in a Satsuma orchard in the Neretva Valley during the spring of 2004. No other conspicuous symptoms that could be attributed to CTV were observed in the field. Most Satsumas were introduced to the Neretva Region from Japan between 1964 and 1984. Together with the fact that the related Nuaga strain was also isolated from Satsumas in Japan (4), our results suggest that SwO SP strains were introduced into Croatia at the same time and have been spreading for several decades. It has been generally believed that this kind of CTV strains either do not exist in the Mediterranean basin or, when found (e.g., Spain), are immediately eradicated. The findings reported here suggest that the epidemiological scenario for the Mediterranean Basin requires revision. References: (1) G. Nolasco et al. Eur. J. Plant Pathol. 108:293, 2002. (2) A. Roy et al. Arch. Virol. 148:707, 2003. (3) A. Šarić and I. Dulić. Agric. Conspectus Sci. 55:171, 1990. (4) G. Suastika et al. J. Gen. Plant Pathol. 67:73, 2001
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| 650 |
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|a Journal Article
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| 700 |
1 |
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|a Škorić, D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Krajačić, M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gatin, Ž
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Santos, C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Martins, V
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Nolasco, G
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 89(2005), 3 vom: 01. März, Seite 342
|w (DE-627)NLM098181742
|x 0191-2917
|7 nnns
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| 773 |
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|g volume:89
|g year:2005
|g number:3
|g day:01
|g month:03
|g pages:342
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| 856 |
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|u http://dx.doi.org/10.1094/PD-89-0342B
|3 Volltext
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