Question

The natural source of enzyme barnase and barstar, a system used to achieve male sterile plant is:

• A. Bacillus subtilis
• B. Bartonella henselae
• C. Bacillus amyloliquefaciens
• D. Barnesiella coli

Hint:

Remember the natural sources of enzymes and genes used in various biotechnological techniques as it forms an important aspect of the discipline.

Answer 1

The Correct Option is C

Bacillus amyloliquefaciens: This bacterium is the natural source of the barnase and barstar genes which are used in plant biotechnology to create male-sterile plants. The barnase gene encodes for a ribonuclease enzyme that is toxic to plant cells, causing male sterility. The barstar gene produces a protein that inhibits the barnase enzyme, thus preventing its harmful effects and allowing for the controlled induction of male sterility. Bacillus subtilis: Though it is a bacteria, it is mainly known for its probiotic nature. Bartonella henselae: This bacterium is more related to causing diseases. Barnesiella coli: This bacterium is mainly found in the human gut.