The pathway of auxin biosynthesis in plants - OUP …
AUXIN BIOSYNTHESIS | Annual Review of Plant Biology
Plant biologists have debated whether auxin biosynthesis proceeded via a pathway that is dependent on the amino acid tryptophan. Studies of this FMO-like enzyme in revealed that the enzyme most likely catalyzes the oxygenation of the compound tryptamine, a key finding, said Chory.
Auxin Signaling: From Synthesis to Systems Biology
To test whether the pathway controlled by the gene was also likely to be used for auxin synthesis in other plants, the researchers overexpressed the gene in tobacco plants. These experiments dramatically altered the tobacco plant, creating tobacco plants that resembled the -induced changes in .
Melatonin Regulates Root Meristem by Repressing Auxin Synthesis …
However, she added, the picture of auxin biosynthesis is complicated by the fact that other scientists have produced mutant plants that cannot produce tryptophan, yet they can still produce auxin. "Thus, there is an alternative route, but at least now we can begin to propose a pathway for the tryptophan-dependent part of auxin biosynthesis."
Auxin Signaling From Synthesis To Systems Biology
AB - The plant hormone auxin drives plant growth and morphogenesis. The levels and distribution of the active auxin indole-3-acetic acid (IAA) are tightly controlled through synthesis, inactivation, and transport. Many auxin precursors and modified auxin forms, used to regulate auxin homeostasis, have been identified; however, very little is known about the integration of multiple auxin biosynthesis and inactivation pathways. This review discusses the many ways auxin levels are regulated through biosynthesis, storage forms, and inactivation, and the potential roles modified auxins play in regulating the bioactive pool of auxin to affect plant growth and development.