Question

why crops made more tolerant to abiotic strrsses using antisense RNA_??​

Answer 1

Answer:

$\underline \mathscr \purple{Question \: : - }$

why crops made more tolerant to abiotic strrsses using antisense RNA_??

$\underline \mathscr \purple{Answer \: : - }$

Crops made more tolerant to abiotic stresses using Antisense RNA.

The tomato variety Flavr Savr developed by Calgene, presents an example where an expression of a nature tomato gene has been blocked.

In 'Flavr Savr' transgenic tomato, expression of a native tomato gene has been blocked. This gene produces enzyme polygalacturonase which promotes softening of fruit. The production of this enzyme was reduced in the Flavr Savr transgenic tomato. The non-availability of this enzyme prevents over-ripening because the enzyme is essential for degradation of cell walls. Thus, fruit remains fresh for a longer period than the fruit of normal tomato variety. It retains flavour, has superior taste and higher quantity of total soluble solids.

Transformation was carried out by introducing recombinant plasmid into Agrobacterium tumefaciens and then allowing the bacteria to infect tomato stem segments. The transformed fruits, although undergoing a gradual softening could be stored for a prolonged period before beginning to spoil.

Answer 2

Answer:

Antisense technology plays an important role in generating high yielding, disease and pest resistant, high nutritional value, and stress-tolerant crop varieties.