Summary
The leaves of three species of plants (Medicago sativa L.,Ocymum basilicum L., andNicotiana tabacum L., cv.Samsun), previously infected with lucerne mosaic virus (LMV), were studied in the electron microscope. In the leaves ofM. sativa andO. basilicum the infection was systemic, while in the leaves ofN. tabacum the infection was local. In all the three species LMV particles were always detected only in the cytoplasm. Apart from the presence of virus particles in the cytoplasm, no ultrastructural alterations were found inM. sativa andN. tabacum. InO. basilicum, the green leaf areas did not show any prominent alterations, while the yellow leaf areas showed marked alterations of the chloroplasts. In these, the lamellar system was scarcely developed, and the few thylakoids tended to fragment, curl and disappear. In the chloroplast stroma, there was an abnormal development of filamentous structures, resembling the stromacentre.
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Publication n. 53 of “Centro Nazionale Virus Vegetali”, Consiglio Nazionale delle Ricerche, sections I and II.
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Gerola, F.M., Bassi, M. & Betto, E. A submicroscopical study of leaves of alfalfa, Basil, and tobacco experimentally infected with lucerne mosaic virus. Protoplasma 67, 307–318 (1969). https://doi.org/10.1007/BF01254896
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DOI: https://doi.org/10.1007/BF01254896