tobacco virus disease

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  • Tobacco Mosaic Virus (TMV) - Penn State Extension

    Tobacco mosaic virus (TMV) is named for one of the first plants in which it was found in the 1800s. However, it can infect well over 350 different species of plants. TMV is made up of a piece of nucleic acid (ribonucleic acid RNA) and a surrounding protein coat. The complete virus is a submicroscopic, rigid, rod-shaped particle.

  • Discovery of the first virus, the tobacco mosaic virus: 1892

    Two scientists contributed to the discovery of the first virus, Tobacco mosaic virus. Ivanoski reported in 1892 that extracts from infected leaves were still infectious after filtration through a Chamberland filter-candle. Bacteria are retained by such filters, a new world was discovered: filterable pathogens.

  • A New Virus Disease of the Tobacco Plant Nature

    IN recent years investigators have recognised many virus diseases of the tobacco plant, all, however, producing chlorosis or necrosis of the leaves. I have investigated at Amani a disease of

  • Virus Diseases of Cucurbits - Cornell University

    Tobacco ringspot virus (TRSV) is mainly transmitted by nematodes (Xiphinema americanun). Melons and cucumbers are most commonly affected by this virus. The virus has been known on rare occasions to be seedborne in cucurbits.

  • Tomato viruses UMN Extension

    Tobacco mosaic virus can infect ornamentals and weeds including cucumber, lettuce, beet, pepper, tomato, petunia, jimson weed and horsenettle. The symptoms for each virus on each host appear differently, though there are some commonalities. Each species of virus has its own specific biology.

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  • The discovery of viruses: advancing science and medicine by

    The discovery of viruses in the final years of the nineteenth century represented the culmination of two decades of work on tobacco mosaic disease by three botanical scientists. Eventually their discovery led to a paradigm shift in scientific thought, but it took more than 20 years to appreciate its implications because it was inconsistent with the prevailing dogma of the time-Koch's postulates.

  • Tobacco Use CDC

    The Harmful Effects of Tobacco Use. Cigarette smoking leads to disease and disability and harms nearly every organ of the body. Smoking causes cancer, heart disease, stroke, lung diseases, type 2 diabetes, and other chronic health conditions. The impact also extends beyond the smoker.

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