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NEETBotanyBiological Classification

Who discovered a new infectious agent smaller than viruses and causes potato spindle tuber disease?

Options

  1. AT.O. Diener
  2. BM.W. Beijerinck
  3. CW.M. Stanley
  4. DDmitri Ivanowsky

Correct answer

A. T.O. Diener

Step-by-step solution

In 1971, T.O. Diener discovered a new infectious agent that was smaller than viruses and caused potato spindle tuber disease. It was found to be a free RNA; it lacked the protein coat that is found in viruses, hence the name viroid. The RNA of the viroid was of low molecular weight.

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