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Nematode-specific RNAi genes are introduced into tobacco plants to silence nematode mRNA and prevent_x000D_ infestation.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Agricultural Applications - RNAi - Nematode Resistance
Meloidogyne incognita is a nematode that infects tobacco roots and is controlled using RNAi technology.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Agricultural Applications - RNAi - Nematode Resistance
In 1898, 'M.W. Beijerinck' made a monumental biological discovery. According to NCERT, he demonstrated that the filtered, cell-free extract from tobacco plants infected with the mosaic disease could actively cause the same infection in completely healthy plants. To describe this mysterious, soluble infectious agent, he famously coined the descriptive Latin phrase 'Contagium vivum fluidum' (infectious living fluid).
Ref: NCERT Class 11 Biology > Chapter 2: Biological Classification > 2.6 Viruses, Viroids, Prions and Lichens
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