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Some Effects of Thiouracil on Virus-infected Plants

机译：硫酸对病毒感染植物的一些影响

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SUMMARY: Submerging leaves in water soon after they are inoculated with viruses can prevent infection, and for studying factors that affect the rate of virus multiplication leaves should not be placed in solutions until a day after inoculation.The rate at which viruses multiply in tobacco leaves is decreased by spraying with solutions of thiouracil, but less so than by floating leaves in the solutions. The physiological state of floated leaves affects the extent to which thiouracil impedes virus multiplication; least virus is produced in the presence of thiouracil when the condition of leaves otherwise most favours virus formation. Multiplication of virus can be checked at any time by thiouracil, but is most affected when leaves contain little virus; multiplication is resumed when thiouracil is removed. Thiouracil impedes the multiplication in tobacco of all viruses tested, but not of a tobacco necrosis virus in French bean or broad bean mottle virus in Vicia faba.When mixed with inocula, thiouracil can prevent infection from occurring, both in tobacco and French bean. It also affects the growth and appearance of both plants. These effects, unlike the impedance of virus multiplication in tobacco, are not counteracted by an excess of uracil. Tobacco leaves in which tobacco mosaic virus is multiplying develop necrotic spots and rings when treated with thiouracil, and local lesions can be made evident by spraying inoculated leaves. Necrotic lesions also occur on V. faba infected with broad-bean mottle virus and treated with thiouracil.
机译：发明内容：淹没在水中浸没在水中，含有病毒可以预防感染，并且用于研究影响病毒倍增叶率的因素不应在接种后的一天中脱离溶液。病毒在烟草叶中的速率繁殖通过用硫酸溶液喷涂而不是通过漂浮在溶液中的漂浮叶片来降低。漂浮叶片的生理状态影响硫嘧啶阻碍病毒乘法的程度;当叶片的条件否则最受欢迎的病毒形成时，在硫酸的存在下产生最少的病毒。可以在硫嘧啶的任何时间检查病毒的升值，但在叶子含有少量病毒时受影响最大;递除硫酸时恢复倍增。硫酸在烟草中的所有病毒的烟草中阻碍了烟草中的烟草，但在韦西亚法国豆豆中的烟草坏死病毒。与海洋围混合时，硫酸可以防止烟草和法国豆类发生感染。它还影响两种植物的生长和外观。与烟草中病毒倍增的阻抗不同，这些效果不会因过量的尿嘧啶而抵消。烟草叶中，其中烟草叶片病毒乘以用硫酸硫酸处理时发育坏死的斑点和环，并且通过喷射接种的叶子可以使局部病变显而易见。坏死病变也发生在Vaba Faba感染蚕豆斑块病毒并用硫酸处理。

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    《Microbiology》 |1954年第1期|共15页
  • 作者

    F. C. Bawden; B. Kassanis;

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  • 收录信息 美国《科学引文索引》(SCI);
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