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Titolo:
Resistance phenotypes of transgenic tobacco plants expressing different cucumber mosaic virus (CMV) coat protein genes
Autore:
Jacquemond, M; Teycheney, PY; Carrere, I; Navas-Castillo, J; Tepfer, M;
Indirizzi:
INRA, Pathol Vegetale Stn, F-84143 Montfavet, France INRA Montfavet France F-84143 ol Vegetale Stn, F-84143 Montfavet, France INRA, Biol Cellulaire Lab, F-78026 Versailles, France INRA Versailles France F-78026 ellulaire Lab, F-78026 Versailles, France
Titolo Testata:
MOLECULAR BREEDING
fascicolo: 1, volume: 8, anno: 2001,
pagine: 85 - 94
SICI:
1380-3743(200108)8:1<85:RPOTTP>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATHOGEN-DERIVED RESISTANCE; WHITE LEAF STRAIN; MEDIATED RESISTANCE; SUBGROUP-II; PROTECTION; RNA; CUCUMOVIRUS; INFECTION; DETERMINANTS; MECHANISMS;
Keywords:
coat protein gene; cucumber mosaic cucumovirus; recovery; transgenic tobacco; virus resistance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Jacquemond, M INRA, Pathol Vegetale Stn, Domaine St Maurice,BP 94, F-84143Montfavet, France INRA Domaine St Maurice,BP 94 Montfavet France F-84143 ance
Citazione:
M. Jacquemond et al., "Resistance phenotypes of transgenic tobacco plants expressing different cucumber mosaic virus (CMV) coat protein genes", MOL BREED, 8(1), 2001, pp. 85-94

Abstract

Tobacco plants expressing a transgene encoding the coat protein (CP) of a subgroup I strain of cucumber mosaic cucumovirus (CMV), I17F, were not resistant to strains of either subgroup I or II. In contrast, the expression ofthe CP of a subgroup II strain, R, conferred substantial resistance, but only towards strains of the same subgroup. When protection was observed, thelevels of resistance were similar when plants were inoculated with either virions or viral RNA, but resistance was more effective when plants were inoculated with viruliferous aphids. Resistance was not dependent on inoculumstrength and was expressed as a recovery phenotype not yet described for plants expressing a CMV CP gene. Recovery could be observed either early in infection (less than one week after inoculation) or later (4 to 5 weeks after inoculation). In plants showing early recovery, mild symptoms were observed on the inoculated leaves, and in some cases symptoms developed on certain lower systemically infected leaves, but the upper leaves were symptomless and virus-free. Late recovery corresponded to the absence of both symptoms and virus in the upper leaves of plants that were previously fully infected. Northern blot analyses of resistant plants suggested that a gene silencing mechanism was not involved in the resistance observed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/03/20 alle ore 14:15:43