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American Potato Journal

, Volume 31, Issue 7, pp 213–217 | Cite as

A strain of potato-virus Y inducing local and systemic necrotic spots on leaves of tobacco white burley

  • K. Silberschmidt
  • E. Rostom
  • C. Mattos Ulson
Article

Summary

Expressed juice of a spontaneously infected plant ofSolanum sp. induced small round, yellow chlorotic spots on the inoculated and the younger leaves of plants ofNicotiana Tabacum var. White Burley. They are frequently accompanied by stunting of the plant and by veinbanding of the young leaves. No symptoms could be induced inDatura stramonium, whereasNicotiana glutinosa presented only veinbanding and crinkling of the leaves. The thermal inactivation point was found to lie between 55° and 60° C. The round, yellow spots on leaves of White Burley could be induced not only by sap inoculation, but also by viruliferous aphids of the speciesMyzus persicae, (Sulz.). By using batches of 10 apterae ofMyzus persicae for each test plant and by choosing an acquisition feeding period of 5 minutes following a starvation period of 3 hours, the yellow, round spots could be induced in 100 per cent of the tobacco plants inoculated. We consider the causal virus under study a strain of potato-virus Y, possibly related to the necotic strains.

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Literature Cited

  1. 1.
    Costa, A. S. and R. Forster. 1942. Nota sobre a molestia de virus de fumo denominada faixa das nervuras. Bragantia 2: 55–76.Google Scholar
  2. 2.
    Darby, J. F.,R. H. Larson and J. C. Walker. 1951. Variation in virulence and properties of potato virus Y strains. Univ. of Wis. Agr. Exp. Sta. Res. Bull. 177, (29 Pp.).Google Scholar
  3. 3.
    Nobrega, N. R. and K. Silberschmidt. 1941. Estudo sobre o estado sanitario de algumas variedades de batatinhas peruanas. O Biologico, 7: 243–248.Google Scholar
  4. 4.
    — and —. 1941. Sobre uma provavel variante do virus “Y” da batatinha (Solanum virus 2, Orton) que tem a peculiaridade de provocar necroses em plantas de fumo. Arquiv. do Inst. Biol. 15: 307–330.Google Scholar
  5. 5.
    Orlando, A. and K. Silberschmidt. 1945. Estudos sobre a transmissao da doenca de virus de Solanaceas “Necrose das Nervuras”, por afidios, a algumas relailes entre esse virus e o seu principal inseto vetor. Arquiv. do Inst. Biol. 16: 133–152.Google Scholar
  6. 6.
    Pushkarnath. 1952.Solanum jasminoides virus. Current Science 21 (9): 249. (Ref. in Biol. Abst. 27: 455, 1953.)Google Scholar
  7. 7.
    Simons, J. N. and E. S. Sylvester. 1953. Acquisition threshhold period of Western celery mosaic virus for four species of aphids. Phytopath. 43: 29–31.Google Scholar
  8. 8.
    Smith, K. M. and R. W. G. Dennis. 1940. Some notes on a suspected variant ofSolanum virus 2 (Potato virus Y). The Ann. of App. Biol. 27: 65–70.CrossRefGoogle Scholar
  9. 9.
    Watson, M. A. and F. M. Roberts. 1939. A comparative study of the transmission ofHyoscyamus virus 3, potato virus Y and cucumber virus 1 by the vectorsMyzus persicae (Sulz),M. circumflexus (Buckton), andMacrosiphum gei (Koch). Proc. of the Roy. Soc. B. 127: 543–576.CrossRefGoogle Scholar

Copyright information

© Springer 1954

Authors and Affiliations

  • K. Silberschmidt
  • E. Rostom
  • C. Mattos Ulson
    • 1
  1. 1.Instituto BiologicoSao PauloBrasil

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