Abstract
The lysine analogs S-2-aminoethyl-L-cysteine (AEC) and DL-Δ-hydroxylysine (DHL) caused severe growth inhibition in dark-grown oat seedlings (Avena sativa L. and A. nuda L.) at similar concentrations while L-lysine methyl ester (LME) had little effect. Lysine, arginine, and ornithine reversed the inhibition caused by AEC and DHL, the order of effectiveness being lysine>arginine>ornithine. Of aspartate-pathway amino acids, tested individually and in combinations for inhibitory effects on seedling growth, lysine and combinations containing lysine were the most inhibitory, but the inhibition was much less than that produced by AEC. Only slight synergistic effects occurred when oat seedlings were grown in the presence of paired combinations of aspartatepathway endproduct amino acids.
Ca. 54,000 seeds obtained from 3,463 plants grown from ethyl-methanesulfonate (EMS) treated seed were screened for resistance to AEC. Three resistant variants were identified but the resistance was not recovered among their self-pollinated progeny.
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Abbreviations
- AEC:
-
S-2-aminoethyl-L-cysteine
- DHL:
-
DL-Δ-hydroxylysine
- EMS:
-
ethyl methanesulfonate
- LME:
-
L-lysine methyl ester
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Paper No. 10351, Scientific Journal Series, Minnesota Agricultural Experiment Station
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Cummings, D.P., Green, C.E. & Stuthman, D.D. Studies on lysine analogs, aspartate-derived amino acids, and attempted mutant selection on oat seedlings. Planta 145, 309–314 (1979). https://doi.org/10.1007/BF00388354
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DOI: https://doi.org/10.1007/BF00388354