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Toshiaki Hoshino, Simulation of acetylcholine action by β-indole acetic acid in inducing diurnal change of floral response to chilling under continuous light in Lemna gibba G3, Plant and Cell Physiology, Volume 20, Issue 1, February 1979, Pages 43–50, https://doi.org/10.1093/oxfordjournals.pcp.a075804
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Abstract
IAA induced a diurnal change in floral response to chilling of Lemna gibba G3 under continuous light, as has been reported for ACh. This IAA effect was antagonized by an antiauxin, T-CA. NAA and 2,4-D had no influence on the temperature sensitivity of the duckweed. ACh-like reagents were examined with respect to the sensitivity to their antagonists. Atropine, an ACh-specific antagonist, inhibited the action of IAA. The IAA treatment, however, decreased the ACh content of the plant by ca. 30%. Thus, IAA and ACh are surmised to attack the same or similar action site(s) independently.