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Updated: Aug 8, 2026
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Published on: March 15, 2018
Determination of Endogenous Indole-3-Acetic Acid in Plagiochila arctica (Hepaticae)
D M Law1, D V Basile, M R Basile
1Department of Biology, The Pennsylvania State University, University Park, Pennsylvania 16802.
Abstract:
Endogenous indole-3-acetic acid (IAA) was found in axenically cultured gametophytes of the leafy liverwort, Plagiochila arctica Bryhn and Kaal., by high-performance liquid chromatography with electrochemical detection. Identification of the methylated auxin was confirmed by gas chromatography-mass spectrometry. Addition of 57 micromolar IAA to cultures increased relative production of ethylene. This is the first definitive (gas chromatography-mass spectrometry) demonstration of the natural occurrence of IAA in a bryophyte.
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