The effects of exogenous proline and proline analogues on in vitro shoot organogenesis in Arabidopsis |
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| Authors: | P.D. Hare W.A. Cress J. van Staden |
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| Affiliation: | (1) Research Centre for Plant Growth and Development, School of Botany and Zoology, University of Natal Pietermaritzburg, Private Bag X01, Scottsville, 3209, South Africa;(2) Research Centre for Plant Growth and Development, School of Botany and Zoology, University of Natal Pietermaritzburg, Private Bag X01, Scottsville, 3209, South Africa |
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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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| Keywords: | Arabidopsis pentose phosphate pathway proline shoot organogenesis |
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