Spectroscopic investigation of indole-3-acetic acid interaction with iron(III)

Effect of indole-3-acetic acid on lead accumulation in maize (Zea mays L.) seedlings and the relevant antioxidant response

“…The characteristic changes in the FTIR spectra were detected as a response to reactions between Pb and IAA. According to Kamnev et al (2001), it is not the benzene ring in IAA but the IAA pyrrole moiety that is involved in coordination with Fe III . Coordination is likely involved of the -electron of the pyrrole ring conjugated with the non-shared electron pair at the heteroatom.…”

Salkowski’s Reagent Test as a Primary Screening Index for Functionalities of Rhizobacteria Isolated from Wild Dipterocarp Saplings Growing Naturally on Medium-Strongly Acidic Tropical Peat Soil

“…8) Salkowski's reagent is a 35% HClO 4 solution containing 10 mM FeCl 3 , and when mixed with IAA, tris-(indole-3-acetato)iron(III) complex is formed to display pink coloration. 9) These positive reactions of test bacteria indicate their capability of metabolizing L-tryptophan (TRP) to IAA or some analogous compounds of IAA. As exogenous IAA in the rhizosphere is a key phytohormone-like chemical substance for rootmicrobe interaction, the bio-conversion process of TRP to IAA in bacteria has been investigated well following Perley and Stowe.…”

Effects of trapped electrons on the line shape in emission Mössbauer spectra

“…However, this seems less probable as, first, such radicals can form not in all systems and, second, electrons therein are valent with more delocalised wave functions and would therefore induce smaller electric field gradients. Note also that in the transmission Mössbauer spectra of the similar complexes containing Fe 2+ and/or Fe 3+ ions [16,17], the line width values can be considered as normal considering the thickness of the samples, and the distribution of quadrupole splittings was symmetric.…”