Rooting hastened in onions by ascorbate and ascorbate free radical |
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Authors: | R. C. de Cabo J. A. González-Reyes F. Córdoba P. Navas |
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Affiliation: | (1) Departamento de Biología Celular, Facultad de Ciencias, Universidad de Córdoba, 14004 Córdoba, Spain;(2) Departamento de Ciencias Agroforestales, Universidad de Huelva, 21819 Huelva, Spain |
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Abstract: | Treatment of onion bulbs with ascorbate or its free radical hastened root emergence on the basal plate in relation to treatments with water or dehydroascorbate. This stimulation was accompanied by a significant increase of DNA synthesis per primordium. After a 24-h imbibition, ascorbate and ascorbate free radical also increased cell length. Ascorbate and ascorbate free radical apparently activated the onset of cell proliferation in root primordia, resulting in a shortening in G1-S transition. The possible action of the ascorbate system at the plasma membrane level is discussed.Abbreviations ASC ascorbic acid - AFR ascorbate free radical - DHA dehydroascorbate |
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Keywords: | Ascorbate Ascorbate free radical Root elongation |
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