Q375
The 1st cloned plant toxin gene is
A.
Hm1
AnswerB.
Hm3
C.
Tox 3
D.
Tox A
Answer: Option A
Solution
Answer: Option A
Solution:
The 1st cloned plant toxin gene is Hm1.The HM1 gene in maize controls both race-specific resistance to the fungus Cochliobolus carbonum race 1 and expression of the NADPH (reduced form of nicotinamide adenine dinucleotide phosphate) dependent HC toxin reductase (HCTR), which inactivates HC toxin, a cyclic tetrapeptide produced by the fungus to permit infection.