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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1111/nph.17777
|2 doi
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|a pubmed24n1105.xml
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|e rakwb
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|a eng
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1 |
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|a Sun, Yong-Duo
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Location matters
|b from changing a presumption about the Citrus tristeza virus tissue tropism to understanding the stem pitting disease
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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 24.03.2022
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|a Date Revised 24.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.
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|a Stem pitting is a common virus-induced disease phenotype that tremendously impacts growth of perennial woody plants. How stem pitting develops in the infected trees remains unclear. Here, we assessed the development of stem pits upon infection of citrus by Citrus tristeza virus (CTV), which has been regarded as 'phloem-limited'. By taking advantage of a highly susceptible virus host - Citrus macrophylla - and a CTV isolate lacking a viral effector - the p33 protein, the development pattern of stem pitting was revealed via time-course observations and histological analyses. The stem pits result from the virus-colonized nonlignified 'gumming' malformations which are initiated by virus invasion into multiple spatially separated tissue layers - protophloem, metaphloem, and, unexpectedly, metaxylem. Notably, invasion of CTV into the unspecialized metaxylem cells interrupted the differentiation of the xylem tracheary elements. With the radial spread of CTV into the adjacent cells towards the stem periphery, the clusters of virus-colonized immature metaxylem cells extended in size, merging, at a certain stage, with virus-bearing cells in the protophloem and metaphloem layers. Collectively, our data provide a new insight into the process of the stem pitting development and the role of the xylem tissue in the virus pathogenicity
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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|a Citrus tristeza virus
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| 650 |
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|a citrus
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| 650 |
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|a stem pitting
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| 650 |
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|a virus spread
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| 650 |
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4 |
|a xylem differentiation
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| 700 |
1 |
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|a Folimonova, Svetlana Y
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 233(2022), 2 vom: 15. Jan., Seite 631-638
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|x 1469-8137
|7 nnns
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| 773 |
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|g volume:233
|g year:2022
|g number:2
|g day:15
|g month:01
|g pages:631-638
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|u http://dx.doi.org/10.1111/nph.17777
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