TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses

TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses

Tomato yellow leaf curl virus (TYLCV), tomato yellow leaf curl Sardinia virus (TYLCSV) and TYLCV/TYLCSV recombinants (Begomovirus, Geminiviridae) are responsible of the damaging tomato leaf curl disease (TYLCD) in the Mediterranean. Tomato cultivars having the Ty-1 resistance gene were deployed in the Mediterranean Basin in the 2000s. Plants of those cultivars prevent symptom expression and reduce virus accumulation. The shift from susceptible to Ty-1 resistant cultivars in Morocco coincided with the invasion of a peculiar TYLCV/TYLCSV recombinant virus (TYLCV-IS76) discovered in 2010 in symptomatic resistant plants (1). It replaced the parental-type viruses in the South of Morocco and spread to the whole country. The selective advantage of TYLCV-IS76 assessed experimentally in comparison with parental type viruses is consistent with a selection driven emergence (2). According to phylogenetic analysis, and the recombination profiles of recombinants generated in tomato plants co-inoculated with TYLCV and TYLCSV, TYLCV-IS76 has emerged through a rare process (3). TYLCV-IS141, another peculiar TYLCV/TYLCSV exhibit some but not all the features of TYLCV-IS76. Like TYLCV-IS76 it inherited a very short TYLCSV fragment of about 120nts, it was detected on symptomatic Ty-1 resistant plants and exhibit a selective advantage over parental viruses in experimental conditions. However, unlike TYLCV-IS76, TYLCV-IS141 was detected in Italy (1, 4, 5) and was found to be generated and positively selected in experimental conditions (3). The sampling effort is presently too low to know if TYLCV-IS141 has the same invasion potential as TYLCV-IS76. Both recombinants will be useful to identify the determinants of their similar competitiveness.

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Main Authors: Belabess, Zineb, Granier, Martine, Peterschmitt, Michel, Urbino, Cica
Format: conference_item biblioteca
Language:eng
Published: AAB
Online Access:http://agritrop.cirad.fr/594740/
http://agritrop.cirad.fr/594740/3/ID594740.pdf
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spelling dig-cirad-fr-5947402020-01-21T14:43:26Z http://agritrop.cirad.fr/594740/ http://agritrop.cirad.fr/594740/ TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses. Belabess Zineb, Granier Martine, Peterschmitt Michel, Urbino Cica. 2019. . Association of Applied Biologists. Rome : AAB, Résumé, 2 p. International Advances in Plant Virology 2019, Rome, Italie, 29 Octobre 2019/31 Octobre 2019. Researchers TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses Belabess, Zineb Granier, Martine Peterschmitt, Michel Urbino, Cica eng 2019 AAB Tomato yellow leaf curl virus (TYLCV), tomato yellow leaf curl Sardinia virus (TYLCSV) and TYLCV/TYLCSV recombinants (Begomovirus, Geminiviridae) are responsible of the damaging tomato leaf curl disease (TYLCD) in the Mediterranean. Tomato cultivars having the Ty-1 resistance gene were deployed in the Mediterranean Basin in the 2000s. Plants of those cultivars prevent symptom expression and reduce virus accumulation. The shift from susceptible to Ty-1 resistant cultivars in Morocco coincided with the invasion of a peculiar TYLCV/TYLCSV recombinant virus (TYLCV-IS76) discovered in 2010 in symptomatic resistant plants (1). It replaced the parental-type viruses in the South of Morocco and spread to the whole country. The selective advantage of TYLCV-IS76 assessed experimentally in comparison with parental type viruses is consistent with a selection driven emergence (2). According to phylogenetic analysis, and the recombination profiles of recombinants generated in tomato plants co-inoculated with TYLCV and TYLCSV, TYLCV-IS76 has emerged through a rare process (3). TYLCV-IS141, another peculiar TYLCV/TYLCSV exhibit some but not all the features of TYLCV-IS76. Like TYLCV-IS76 it inherited a very short TYLCSV fragment of about 120nts, it was detected on symptomatic Ty-1 resistant plants and exhibit a selective advantage over parental viruses in experimental conditions. However, unlike TYLCV-IS76, TYLCV-IS141 was detected in Italy (1, 4, 5) and was found to be generated and positively selected in experimental conditions (3). The sampling effort is presently too low to know if TYLCV-IS141 has the same invasion potential as TYLCV-IS76. Both recombinants will be useful to identify the determinants of their similar competitiveness. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/594740/3/ID594740.pdf text cc_0 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/
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country Francia
countrycode FR
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region Europa del Oeste
libraryname Biblioteca del CIRAD Francia
language eng
description Tomato yellow leaf curl virus (TYLCV), tomato yellow leaf curl Sardinia virus (TYLCSV) and TYLCV/TYLCSV recombinants (Begomovirus, Geminiviridae) are responsible of the damaging tomato leaf curl disease (TYLCD) in the Mediterranean. Tomato cultivars having the Ty-1 resistance gene were deployed in the Mediterranean Basin in the 2000s. Plants of those cultivars prevent symptom expression and reduce virus accumulation. The shift from susceptible to Ty-1 resistant cultivars in Morocco coincided with the invasion of a peculiar TYLCV/TYLCSV recombinant virus (TYLCV-IS76) discovered in 2010 in symptomatic resistant plants (1). It replaced the parental-type viruses in the South of Morocco and spread to the whole country. The selective advantage of TYLCV-IS76 assessed experimentally in comparison with parental type viruses is consistent with a selection driven emergence (2). According to phylogenetic analysis, and the recombination profiles of recombinants generated in tomato plants co-inoculated with TYLCV and TYLCSV, TYLCV-IS76 has emerged through a rare process (3). TYLCV-IS141, another peculiar TYLCV/TYLCSV exhibit some but not all the features of TYLCV-IS76. Like TYLCV-IS76 it inherited a very short TYLCSV fragment of about 120nts, it was detected on symptomatic Ty-1 resistant plants and exhibit a selective advantage over parental viruses in experimental conditions. However, unlike TYLCV-IS76, TYLCV-IS141 was detected in Italy (1, 4, 5) and was found to be generated and positively selected in experimental conditions (3). The sampling effort is presently too low to know if TYLCV-IS141 has the same invasion potential as TYLCV-IS76. Both recombinants will be useful to identify the determinants of their similar competitiveness.
format conference_item
author Belabess, Zineb
Granier, Martine
Peterschmitt, Michel
Urbino, Cica
spellingShingle Belabess, Zineb
Granier, Martine
Peterschmitt, Michel
Urbino, Cica
TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
author_facet Belabess, Zineb
Granier, Martine
Peterschmitt, Michel
Urbino, Cica
author_sort Belabess, Zineb
title TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
title_short TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
title_full TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
title_fullStr TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
title_full_unstemmed TYLCV-IS76 and TYLCV-IS141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
title_sort tylcv-is76 and tylcv-is141: fraternal but not identical tomato yellow leaf curl twin recombinant viruses
publisher AAB
url http://agritrop.cirad.fr/594740/
http://agritrop.cirad.fr/594740/3/ID594740.pdf
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AT peterschmittmichel tylcvis76andtylcvis141fraternalbutnotidenticaltomatoyellowleafcurltwinrecombinantviruses
AT urbinocica tylcvis76andtylcvis141fraternalbutnotidenticaltomatoyellowleafcurltwinrecombinantviruses
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