Nice video! One comment/question. Is it not true that microbes in the human microbiome use the shikimate pathway? This is important when looking at shikimate pathway disruption by herbicides.
The IAA tends to accumulate on shaded side while as the side exposed to sunlight doesn't show increased concentration of Auxin , it is because of the PHOTOXIDATION of IAA . www.annualreviews.org/doi/abs/10.1146/annurev.pp.09.060158.000501?journalCode=arplant.1