D-Proline Effect on L-Proline-Requiring Mutants inZea mays(L.)

摘要

D-Proline and three proline analogs, L-hydroxyproline, L-azetidine-2-carboxylic acid and L-thiazolidine-4-carboxylic acid, were tested for their effect on proline-requiring mutants (pro 1) of maize at the concentrations used for phenotypic repair with L-proline. D-Proline was the only one that promotedpro 1mutant growth and did not affect the growth of normal siblings. The possible role of D-proline in repairingpro 1mutants is discussed.