SCIENCE
BOTANY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which one of the following is a Precursor of Auxin?
|
|
Tryptophan
|
|
|
Kaurene
|
|
|
Zeatin
|
|
|
Methionine
|
Explanation:
Detailed explanation-1: -Trp is a known precursor for auxin biosynthesis and it has been demonstrated that feeding plants with labeled Trp leads to the production of labeled IAA (Wright et al., 1991; Normanly et al., 1993).
Detailed explanation-2: -The Tryptophan-Dependent Auxin Biosynthesis Pathway. The first step is catalyzed by TAAs that transfer the amino group from Trp to an alpha keto acid such as pyruvate to generate IPA and another amino acid. The second step is an oxygen and NADPH-dependent reaction catalyzed by the YUC flavin-containing monooxygenases.
Detailed explanation-3: -Tryptophan is a precursor for IAA synthesis through Trp-dependent IAA biosynthetic pathway.
There is 1 question to complete.