Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo

Previous studies on Atalantia citroides, a citrus relative that appeared to be immune to viroid infection, revealed the existence of a new viroid, which was designated tentatively as Citrus viroid-V (CVd-V) and has been proposed as a new member of the genus Apscaviroid within the family Pospiviroida...

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Main Authors: Serra, Pedro, Pina, José A., Durán-Vila, Núria
Other Authors: Hilf, M. E.
Format: conferenceObject
Language:Inglés
Published: IOCV 2021
Subjects:
Online Access:http://hdl.handle.net/20.500.11939/7704
https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/17.%20Serra.pdf
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author Serra, Pedro
Pina, José A.
Durán-Vila, Núria
author2 Hilf, M. E.
author_browse Durán-Vila, Núria
Hilf, M. E.
Pina, José A.
Serra, Pedro
author_facet Hilf, M. E.
Serra, Pedro
Pina, José A.
Durán-Vila, Núria
author_sort Serra, Pedro
collection ReDivia
description Previous studies on Atalantia citroides, a citrus relative that appeared to be immune to viroid infection, revealed the existence of a new viroid, which was designated tentatively as Citrus viroid-V (CVd-V) and has been proposed as a new member of the genus Apscaviroid within the family Pospiviroidae. Biological indexing of a Seminole tangelo tree on the Etrog citron indicator followed by sPAGE analysis revealed the presence of a viroid that has been characterized as a new variant of CVd-V. The variant has 97.6% sequence identity with the reference sequence of CVd-V and shows three characteristics: (I) two compensatory changes that modify an A-U base pair between the upper and lower “strands” into a G-C base pair, (II) a U→A change located in a loop that does not seem to disturb the viroid secondary structure, and (III) two sets of changes located in the upper and lower strands that result in a rearrangement of the base pairing between the upper and lower strands. Infectivity studies performed with an artificial mutant revealed the existence of structural constraints in the region in which major differences between CVd-V and the Seminole tangelo variant were identified.
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spelling ReDivia77042025-04-25T14:53:18Z Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo Serra, Pedro Pina, José A. Durán-Vila, Núria Hilf, M. E. Citrus viroids Apscaviroid Structural motifs H20 Plant diseases Previous studies on Atalantia citroides, a citrus relative that appeared to be immune to viroid infection, revealed the existence of a new viroid, which was designated tentatively as Citrus viroid-V (CVd-V) and has been proposed as a new member of the genus Apscaviroid within the family Pospiviroidae. Biological indexing of a Seminole tangelo tree on the Etrog citron indicator followed by sPAGE analysis revealed the presence of a viroid that has been characterized as a new variant of CVd-V. The variant has 97.6% sequence identity with the reference sequence of CVd-V and shows three characteristics: (I) two compensatory changes that modify an A-U base pair between the upper and lower “strands” into a G-C base pair, (II) a U→A change located in a loop that does not seem to disturb the viroid secondary structure, and (III) two sets of changes located in the upper and lower strands that result in a rearrangement of the base pairing between the upper and lower strands. Infectivity studies performed with an artificial mutant revealed the existence of structural constraints in the region in which major differences between CVd-V and the Seminole tangelo variant were identified. 2021-10-27T14:43:01Z 2021-10-27T14:43:01Z 2010 conferenceObject Serra, P., Pina, J. A. & Durán-Vila, N. (2010). Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo . Proceedings of the Seventeenth Conference of the International Organization of Citrus Virologists, 150-157. Riverside, California. 2313-5123 0074-7203 (e-ISSN) http://hdl.handle.net/20.500.11939/7704 https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/17.%20Serra.pdf en 2007-10-22 Seventeenth Conference of the International Organization of Citrus Virologists Adana, Turkey This research was supported by grant AGL2005-01468 from the Ministerio de Educación y Ciencia. Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess IOCV electronico
spellingShingle Citrus viroids
Apscaviroid
Structural motifs
H20 Plant diseases
Serra, Pedro
Pina, José A.
Durán-Vila, Núria
Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title_full Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title_fullStr Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title_full_unstemmed Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title_short Identification and Characterization of a Variant of Citrus viroid V (CVd-V) in Seminole Tangelo
title_sort identification and characterization of a variant of citrus viroid v cvd v in seminole tangelo
topic Citrus viroids
Apscaviroid
Structural motifs
H20 Plant diseases
url http://hdl.handle.net/20.500.11939/7704
https://iocv.ucr.edu/sites/g/files/rcwecm4696/files/2020-06/17.%20Serra.pdf
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