Table 1.

Identified and speculated IAA biosynthetic pathways in some species that have been studied and reported.

Species	Pathway
	IAM	IPA	TAM	IAN	TSO	Non-Tryptophan Dependent
Agrobacterium tumefaciens	✓
Arthrobacter pascens	✓	✓		✓
Azospirillum brasilense		✓				✓
Bacillus amyloliquefaciens		✓	✓	✓
Bacillus cereus			✓
Bacillus thuringiensis		✓
Erwinia herbicola	✓	✓
Escherichia sp.		✓
Herbaspirillum aquaticum		✓
Lysinibacillus spp.		✓	✓
Pseudomonas fluorescens		✓			✓
Pseudomonas putida				✓
Pseudomonas sp.	✓			✓
Rhizobium tropici	✓	✓	✓
Serratia marcescens	✓	✓
Variovorax boronicumulans				✓
Aspergillus flavus						✓
Astraeus odoratus	✓
Bradyrhizobium japonicum				✓
Candida tropicalis		✓
Colletotrichum acutatum	✓
Colletotrichum fructicola	✓
Colletotrichum gloeosporioides	✓
Cyanodermella asteris	✓	✓	✓			✓
Fusarium delphinoides	✓	✓	✓
Fusarium proliferum	✓
Gyrodon suthepensis		✓
Laccaria bicolor		✓
Lentinula edodes		✓
Leptosphaeria maculans		✓		✓
Magnaporthe oryzae		✓
Metarhizium robertsii	✓		✓
Neurospora crassa		✓
Phlebopus portentosus		✓
Piriformospora indica		✓
Pisolithus albus		✓
Pisolithus orientalis		✓
Rhodosporidiobolus fluvialis	✓	✓	✓
Saccharomyces cerevisiae						✓
Scleroderma suthepense		✓
Sporisorium scitamineum		✓
Tricholoma vaccinum		✓
Ustilago maydis		✓
Xylaria sp.				✓