Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia
Potyviruses, such as potato virus Y and tobacco etch virus, as well as cucumber mosaic cucumovirus, have the ability to inhibit post-transcriptional gene silencing (PTGS). When RedStar-type Petunia hybrida cultivars, whose flowers have alternating white and pigmented sectors, were infected with these viruses, each virus induced a different pattern of restoration of floral anthocyanin pigmentation. Local reversion to colored phenotypes in the white sectors, which occurred through interference with PTGS of the chalcone synthase A (chs-A) gene, was correlated with locally increased levels of chs-A mRNA and virus concentration. Our results show that virus infection can interfere with PTGS of a native plant gene, and that this can have profound effects on symptom expression. They also suggest that virus infection could lead to loss of agronomically desirable traits obtained by PTGS in transgenic plants.
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Subjects: | F30 - Génétique et amélioration des plantes, H20 - Maladies des plantes, Petunia, virus des végétaux, Potyvirus, gène, expression des gènes, infection, plante transgénique, http://aims.fao.org/aos/agrovoc/c_5752, http://aims.fao.org/aos/agrovoc/c_5985, http://aims.fao.org/aos/agrovoc/c_32866, http://aims.fao.org/aos/agrovoc/c_3214, http://aims.fao.org/aos/agrovoc/c_27527, http://aims.fao.org/aos/agrovoc/c_3852, http://aims.fao.org/aos/agrovoc/c_27619, |
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dig-cirad-fr-5152102024-01-28T11:42:50Z http://agritrop.cirad.fr/515210/ http://agritrop.cirad.fr/515210/ Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia. Teycheney Pierre-Yves, Tepfer Mark. 2001. In : Potential Environmental Impacts Associated whit Virus-Resistant Transgenic Plants, Versailles, France, 5-6 June 2001. European Science Foundation. s.l. : s.n., Résumé, 10. Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia Teycheney, Pierre-Yves Tepfer, Mark eng 2001 s.n. Potential Environmental Impacts Associated whit Virus-Resistant Transgenic Plants, Versailles, France, 5-6 June 2001 F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 Potyviruses, such as potato virus Y and tobacco etch virus, as well as cucumber mosaic cucumovirus, have the ability to inhibit post-transcriptional gene silencing (PTGS). When RedStar-type Petunia hybrida cultivars, whose flowers have alternating white and pigmented sectors, were infected with these viruses, each virus induced a different pattern of restoration of floral anthocyanin pigmentation. Local reversion to colored phenotypes in the white sectors, which occurred through interference with PTGS of the chalcone synthase A (chs-A) gene, was correlated with locally increased levels of chs-A mRNA and virus concentration. Our results show that virus infection can interfere with PTGS of a native plant gene, and that this can have profound effects on symptom expression. They also suggest that virus infection could lead to loss of agronomically desirable traits obtained by PTGS in transgenic plants. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=177716 |
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F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 |
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F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 Teycheney, Pierre-Yves Tepfer, Mark Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
description |
Potyviruses, such as potato virus Y and tobacco etch virus, as well as cucumber mosaic cucumovirus, have the ability to inhibit post-transcriptional gene silencing (PTGS). When RedStar-type Petunia hybrida cultivars, whose flowers have alternating white and pigmented sectors, were infected with these viruses, each virus induced a different pattern of restoration of floral anthocyanin pigmentation. Local reversion to colored phenotypes in the white sectors, which occurred through interference with PTGS of the chalcone synthase A (chs-A) gene, was correlated with locally increased levels of chs-A mRNA and virus concentration. Our results show that virus infection can interfere with PTGS of a native plant gene, and that this can have profound effects on symptom expression. They also suggest that virus infection could lead to loss of agronomically desirable traits obtained by PTGS in transgenic plants. |
format |
conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes H20 - Maladies des plantes Petunia virus des végétaux Potyvirus gène expression des gènes infection plante transgénique http://aims.fao.org/aos/agrovoc/c_5752 http://aims.fao.org/aos/agrovoc/c_5985 http://aims.fao.org/aos/agrovoc/c_32866 http://aims.fao.org/aos/agrovoc/c_3214 http://aims.fao.org/aos/agrovoc/c_27527 http://aims.fao.org/aos/agrovoc/c_3852 http://aims.fao.org/aos/agrovoc/c_27619 |
author |
Teycheney, Pierre-Yves Tepfer, Mark |
author_facet |
Teycheney, Pierre-Yves Tepfer, Mark |
author_sort |
Teycheney, Pierre-Yves |
title |
Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
title_short |
Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
title_full |
Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
title_fullStr |
Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
title_full_unstemmed |
Virus-specific spatial differences in the interference with silencing of the chs-A gene in non transgenic petunia |
title_sort |
virus-specific spatial differences in the interference with silencing of the chs-a gene in non transgenic petunia |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/515210/ |
work_keys_str_mv |
AT teycheneypierreyves virusspecificspatialdifferencesintheinterferencewithsilencingofthechsageneinnontransgenicpetunia AT tepfermark virusspecificspatialdifferencesintheinterferencewithsilencingofthechsageneinnontransgenicpetunia |
_version_ |
1792495636578304000 |