Reaction of sweet pepper to the potato virus y (PVYm)

Echer, Márcia de Moraes; Costa, Cyro Paulino da

doi:10.1590/s0103-90162002000200016

Cited by 11 publications

(9 citation statements)

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“…Entre as principais doenças da cultura, estão as causadas por vírus dos gêneros Potyvirus, particularmente pela espécie PepYMV(Pepper yellow mosaic virus), que tem sido prioridade nos programas de melhoramento de pimentão no Brasil (Echer & Costa, 2002;Maciel-Zambolim et al, 2004). Atualmente, o PepYMV ocorre naturalmente, nas principais regiões produtoras, e provoca a doença conhecida popularmente como mosaico-amarelo do pimentão.…”

Section: Introductionunclassified

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Seleção assistida com uso de marcador molecular para resistência a potyvírus em pimentão

Nogueira

Maluf³

et al. 2012

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi determinar a presença do alelo Pvr4, que confere resistência contra o PepYMV (Pepper yellow mosaic virus), em genótipos de pimentão comunmente encontrados no mercado brasileiro, com uso de um marcador molecular codominante tipo CAPS. A resistência ao PepYMV, nos genótipos CM-334-INRA, Myr-29 e em genótipos derivados do híbrido comercial Mônica-R, foi detectada como associada à banda de 444 pb, ligada ao alelo de resistência Pvr4. As plantas resistentes homozigotas (Pvr4/Pvr4) mostraram uma banda de 444 pb, as suscetíveis (Pvr4 Marker-assisted selection for resistance to potyvirus in sweet pepperAbstract -The objective of this work was to determine the presence of the Pvr4 allele, which controls the resistance to the PepYMV (Pepper yellow mosaic virus), in sweet pepper genotypes commonly available in the Brazilian market, using a CAPS codominant molecular marker. The resistance to PepYMV, in the genotypes CM-334-INRA, Myr-29, and in genotypes derived from the hybrid Mônica-R, was found to be associated with the 444 bp band linked to the resistance allele Pvr4. Homozygous resistant plants (Pvr4/Pvr4) showed a single band of 444 bp, the susceptible ones (Pvr4showed a band of 458 bp, and the heterozygous resistant plants (Pvr4 + /Pvr4) showed both bands. However, in the resistant accession CM-334-UFV, and in the hybrids Magali-R and Martha-R, as well as in populations derived from this accession and these hybrids, the resistance to PepYMV was not associated to the CAPS marker. The accession CM-334-UFV ('Criollo de Morelos-334' from Viçosa, MG, Brazil) was distinct from CM-334-INRA ('Criollo de Morelos-334', from France); although both accessions were resistant to PepYMV, the association of resistance with the 444 bp band was found only in CM-334-INRA.

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Section: Introductionunclassified

“…A existência de variabilidade genética no gênero Capsicum tem permitido controlar com eficiência, via resistência, as doenças viróticas causadas pelo complexo potyvírus. Fontes de resistência têm se mostrado eficientes e duradouras em condições de inoculação artificial e no campo (Caranta et al, 1999;Echer & Costa, 2002).…”

Section: Introductionunclassified

Seleção assistida com uso de marcador molecular para resistência a potyvírus em pimentão

Nogueira

Maluf³

et al. 2012

Pesq. agropec. bras.

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“…Inoculations with PepYMV showed that the lines PIX-044B-13-01, PIX-045B-27-02, PIX-045B-32-03, PIX-052B-06-01, Myr-29-09-05 and Myr-29-11-8 may be considered resistant to the pathogen since they showed percentages of plants without mosaic symptoms at or near 100%, not differing from the resistant control Criollo de Morellos-334 ( (Echer & Costa, 2002), and PIX-044B-01-01 corresponds to an F 4 family, an explanation for this result would be the fact that the line constitutes a segregating family for resistance to the virus.…”

Section: Resultsmentioning

confidence: 98%

“…The existence of genetic variability in the Capsicum genus has CARVALHO allowed the introduction of resistance to these pathogens in sweet pepper cultivars (Candole et al, 2010;Fazari et al, 2012;Nogueira et al, 2012). In general, genetic resistance to these plant pathogens may be exploited in hybrid combinations because studies show that genetic control of resistance is usually due to the presence of dominant alleles, with monogenic inheritance (Echer & Costa, 2002;Monroy-Barbosa & Bosland, 2008;Thies & Ariss, 2009). Currently, sweet pepper cultivars in Brazil show resistance to only one or two of the pathogens.…”

Section: Researchmentioning

confidence: 99%

Assessment of resistances to multiple pathogens in experimental sweet pepper hybrids

et al. 2017

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The aim of this study was to assess resistance to some of the major sweet pepper pathogens [Phytophthora capsici, Pepper yellow mosaic virus (PepYMV) and Meloidogyne incognita] in a group of experimental hybrids and their respective parental lines, and to identify hybrids possibly resistant to all three pathogens. Ten parental breeding lines, thirty experimental hybrids and seven commercial controls (Konan-R, Magali-R, Martha-R, Stephany, Mallorca, Magnata Super and Criollo de Morelos-334) were used. Each experiment was set up in a randomized complete block design with three replications and plots consisting of 16 plants. For assessment of resistance to P. capsici and PepYMV, the percent of asymptomatic plants was considered. In evaluating reactions to M. incognita, both the nematode reproduction index and the nematode reproduction factor were calculated. Five hybrids were found with resistance to all three pathogens. For all three pathogens, there was evidence that hybrids with two resistant parental lines showed slightly higher levels of pathogen resistance than those with only one resistant parental line.

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“…As the resistance to PVY strains is conferred by the Pvr4 gene from C. annuum 'Serrano Criollo de Morelos 334 ('SCM 334'), which also confers resistance to Pepper mottle virus (PepMoV) (Palloix & Kyle, 1995;Dogimont et al, 1996;Andrés et al, 1998;Echer & Costa, 2002), it is supposed that the same gene might be responsible for the resistance to PepYMV.…”

Section: Introductionmentioning

confidence: 99%

Breakdown of resistance in sweet pepper against Pepper yellow mosaic virus in Brazil

Giória

Braga

Krause‐Sakate

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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Plants of Capsicum annuum cv. Magali R, resistant to Pepper yellow mosaic virus (PepYMV), which showed severe yellow mosaic, leaf malformation and stunting were observed during the 2003/04 growing season in Lins, São Paulo State, Brazil. Potyvirus-like particles observed in leaf sap from infected plants under the electron microscope reacted with an antiserum against PepYMV in PTA-ELISA. In addition to C. annuum cv. Magali R, this potyvirus also infected systemically the resistant C. annuum cv. Rubia R. The nucleotide sequence of part of the CP gene of this potyvirus shared 96-98% identity with that of other PepYMV isolates. The partial nucleotide sequence of the 3' NTR showed 94-96% identity with that of PepYMV. These data indicate that this potyvirus is a resistance-breaking isolate of PepYMV.

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Reaction of sweet pepper to the potato virus y (PVYm)

Cited by 11 publications

References 10 publications

Seleção assistida com uso de marcador molecular para resistência a potyvírus em pimentão

Seleção assistida com uso de marcador molecular para resistência a potyvírus em pimentão

Assessment of resistances to multiple pathogens in experimental sweet pepper hybrids

Breakdown of resistance in sweet pepper against Pepper yellow mosaic virus in Brazil

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