Capsicum annuum Brief Report A. K. Inoue-Nagata
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Fig. 2. Phylogenetic analysis of 23 sequences fromthe coat protein of potyviruses using the
PAUP 4.0 software. Maximum Likelihood tree with bootstrap and jackknife values (between brackets) shown at the nodes The line C. chinense PI 159236, C. annuum Serrrano Vera Cruz and Criollo de Morellos 334 exhibited an immune-like response and were considered as promis- ing sources of resistance against these new pepper virus isolates [1]. The absence of infection of D. stramonium plants with these isolates reveals an interesting character because typical PVY isolates do not infect D. stramonium as well. This is a peculiar characteristic of PVY that has been employed as a practical method to distinguish it fromother potyviruses [5], which is not valid in separating Poty1 and Poty2 fromPVY. The intensive use of the PVY-resistant cultivars may have 854 A. K. Inoue-Nagata et al. Fig. 3. Phylogenetic analysis of 17 sequences of the 3 -untranslated region of potyviruses using the PAUP 4.0 software. Maximum Likelihood tree with bootstrap and jackknife values (between brackets) shown at the nodes collaborated to the selection and emergence of this virus in Brazil. As the virus causes an intense yellow mosaic symptom in susceptible sweetpepper cultivars, the name Pepper yellow mosaic virus (PepYMV). Acknowledgements The authors wish to thank Dr. Nair Tateishi (Agroflora, Brazil) for providing the Poty1 isolate, Mr. Geraldo Magela for assistance in the collection of Poty2 isolate, and Dr. Tatsuya Nagata for critically reading the manuscript. References 1. Boiteux LS, Cupertino FP, Silva C, Dusi AD, Monte-Neschich DC, van der Vlugt RAA, Fonseca MEN (1996) Resistance to potato virus Y (pathotype 1-2) in Capsicum annuum and Capsicum chinense is controlled by two independent major genes. Euphytica 87: 53–58 2. Brioso PST, Ferreira MA, Oliveira DE (1996) “Potato virus Y”- identificação de uma estirpe infectando naturalmente pimentão (Capsicum annuum) e fonte de resistência. Fitopatol Bras 21: 226–235 Pepper yellow mosaic virus 855 3. Devereux J, Haeberli P, Smithies O (1984) A comprehensive set of sequence analysis programs for the VAX. Nucleic Acids Res 12: 387–395 4. Gebre-Selassie K, Marchoux G, Delecolle B, Pochard E (1985) Variabilité naturelle des souches du virus Y de la pomme de terre dans les cultures de piment du sud-est de la France. Charactérisation et classification en pathotypes. Agronomie 5: 621–630 5. Green SK, KimJS (1991) Characteristics and control of viruses infecting peppers: A lit- erature review. Asian Vegetable Research and Development Center (AVRDC). Technical Bulletin No. 18 6. Gubler U, Hoffman BJ (1983). A simple and very efficient method for generating cDNA libraries. Gene 25: 263–269 7. Inoue-Nagata AK, Fonseca MEN, Lobo TOTA, de Ávila AC, Monte DC (2001) Analysis of the nucleotide sequence of the coat protein and 3 -untranslated region of two Brazilian Potato virus Y isolates. Fitopatol Bras 26: 45–52 8. Marinho VLA, Kitajima EW (1989) Um método simplificado de purificação de potyvírus. Fitopatol Bras 14: 91–93 9. Nagai H (1968) Obtenção de variedades de pimentão resistentes às moléstias de vírus. Bragantia 27: 311–336 10. Nagai H (1971) Novas variedades de pimentão resistentes ao mosaico causado por vírus Y. Bragantia 30: 91–100 11. Nagai H (1983) Melhoramento de pimentão (Capsicum annuum L.) visando resistência ao vírus Y. Hort Bras 1: 3–9 12. Nagai H (1993) Pimentão, pimenta-doce e pimentas. In: Furlani AMC, Viegas GP (ed) O melhoramento de plantas no Instituto Agronômico de Campinas: IAC, Campinas, São Paulo, pp 276–294 13. Provvidenti R, Hampton RO (1992) Sources of resistance to viruses in the Potyviridae. Arch Virol [Suppl] 5: 189–211 14. Rabinowicz PD, Bravo-Almonacid FF, Mentaberry AN (1993) cDNA sequence of the pepper severe mosaic virus coat protein gene. Plant Physiol 103: 1023 15. Sanger F, Nicken S, Coulson AR (1977) DNA sequencing with chain-terminating in- hibitors. Proc Natl Acad Sci USA 74: 5463–4367 16. Shukla DD, Ward CW (1988) Amino acid sequence homology of coat proteins as a basis for identification and classification of the potyvirus group. J Gen Virol 69: 2703–2710 17. Shukla DD, Ward CW, Brunt AA (1994) The Potyviridae. CAB International, Oxon 18. Swofford DL (1998). PAUP ∗ . Phylogenetic Analysis Using Parsimony ( ∗ and Other Meth- ods). Version 4. Sinauer Associates, Sunderland, Massachusetts 19. Vance VB, Moore D, Turpen TH, Bracker A, Hollowell VC (1992) The complete nu- cleotide sequence of pepper mottle virus genomic RNA: comparison of the encoded polyprotein with those of other sequenced potyviruses. Virology 191: 19–30 20. Van der Vlugt RAA, Leunissen J, Goldbach R (1993) Taxonomic relationships between distinct potato virus Y isolates based on detailed comparisons of the viral coat proteins and 3 -nontranslated regions. Arch Virol 131: 361–375 Author’s address: Dr. A. K. Inoue-Nagata, Embrapa Vegetables, C.P. 0218, CEP 70359–970, Brasília, DF, Brazil; e-mail: alicenag@cnph.embrapa.br Received March 12, 2001 Download 68.84 Kb. Do'stlaringiz bilan baham: |
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