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Rooting hastened in onions by ascorbate and ascorbate free radical

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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.

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Abbreviations

ASC:

ascorbic acid

AFR:

ascorbate free radical

DHA:

dehydroascorbate

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de Cabo, R.C., González-Reyes, J.A., Córdoba, F. et al. Rooting hastened in onions by ascorbate and ascorbate free radical. J Plant Growth Regul 15, 53 (1996). https://doi.org/10.1007/BF00192931

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Key Words

  • Ascorbate
  • Ascorbate free radical
  • Root elongation