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Small interfering RNAs’ (siRNAs)

Posted on : 19 Dec 2019

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  • A novel approach to vaccinate plants against viruses can be used as an alternative to toxic pesticides that is harmful both to insects and the environment.
  • During a virus attack, plants initiate a two-stage molecular defense programme which protects them “both at the site of the infection and throughout its structure.
  • The programme first triggers plants’ cells to multiply the virus, which creates viral ribonucleic acid molecules (RNAs). Using special enzyme scissors, the plants then detect these molecules and cut them — a process which produces ‘small interfering RNAs’ (siRNAs).
  • The siRNAs spreads throughout the plant and attach them to a protein called Argonaute. The siRNAs then leads the protein to RNAs viruses to kill them.
  • After six weeks, 90 per cent of the vaccinated plants did not show any signs of infection, but all the untreated plants were killed by the virus.

Article Related Questions

  1. “siRNAs” term seen recently in news is related to which of the following?

  2. 1.It is a new technique found to develop pesticide alternative to protect plants form viral infection.

    2.It is a new missile system developed by DRDO

    3.It is a new asteroid recently discovered by NASA

    4.It is an invasive species recently found in India which is damaging the crops of south India.

    Right Ans : It is a new technique found to develop pesticide alternative to protect plants form viral infection.

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