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The effects of exogenous proline and proline analogues on in vitro shoot organogenesis in Arabidopsis

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Abstract

In vitro shoot organogenesis from Arabidopsis hypocotyl explants was stimulated by 1 mMproline, and to a lesser extent by 5 mM proline, butinhibited by inclusion of 10 mM proline in thehormonally-supplemented regeneration medium. Theability of low concentrations of the prolineanalogues, azetidine-2-carboxylate and thioproline toovercome the stimulatory effect of 1 mM proline, anda slight increase in the stimulative effects of 1 mMproline by D-proline, are consistent with an importantrole for the interconversions of proline and itsprecursors in regulating cell division anddifferentiation.

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Correspondence to J. van Staden.

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Hare, P., Cress, W. & van Staden, J. The effects of exogenous proline and proline analogues on in vitro shoot organogenesis in Arabidopsis. Plant Growth Regulation 34, 203–207 (2001). https://doi.org/10.1023/A:1013326526875

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