Their synthesis can be tryptophan-independent or dependent, and the enzyme nit1 catalyzes the final step of one such pathway.
Their synthesis can be tryptophan-independent or dependent, and the enzyme nit1 catalyzes the final step of one such pathway. They can influence transcription by binding to TIR1 proteins and de-repressing ARF1 factors. Their transport is reliant on PIN proteins, and they are usually synthesized in apical meristems and move down by polar transport. They can also activate proton pumps in the cell membrane, which in turn activate expansins, according to the acid growth hypothesis. They were characterized by Boysen-Jensen, who used agar blocks to show that they are responsible for phototropism. Indole-3-acetic acid is the most common member of, FTP, these plant hormones responsible for cell elongation and lateral root formation.
Their synthesis can be tryptophan-independent or dependent, and the enzyme nit1 catalyzes the final step of one such pathway.
{Auxin}s