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Rooting hastened in onions by ascorbate and ascorbate free radical

Author:
Cabo, R.C. de, Gonzalez-Reyes, J.A., Cordoba, F., Navas, P.
Source:
Journal of plant growth regulation 1996 v.15 no.2 pp. 53-56
ISSN:
0721-7595
Subject:
Allium cepa, bulbs, root primordia, cell growth, length, ascorbic acid, free radicals, dehydroascorbic acid, DNA, synthesis, cell cycle, dose response, plasma membrane, rooting
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.
Agid:
1428048