Root elongation abscisic acid

In contrast to the auxins and gibberellins, abscisic acid (ABA) and ethylene usually retard cell elongation. With some exceptions (Takahashi 1972, Gaither et al. 1975, Malik and Mehan 1975 a, Van Staden and Bornman 1970) ABA is inhibitory to growth (Addicott and Lyon 1969, Milborrow 1974). ABA inhibits stem and root elongation and counteracts the promotive effects of other substances on these organs (Rehm and Cline 1973, Kaufman and Jones 1974,... [Pg.23]

Abscisic Acid. ABA is a potent inhibitor of cell division in the developing roots of Lemna minor (Newton 1977). This effect, plus an apparent direct inhibitory effect on cell expansion in Lemna roots, contributes to the overall inhibitory action of ABA on root elongation in this aquatic plant. [Pg.42]

Friedberg SH, Davidson D (1970) Duration of S phase and cell cycles in diploid and tetraploid cells of mixoploid meristems. Exp Cell Res 61 216-218 Fuchs Y, Lieberman M (1968) Effects of kinetin, lAA, and gibberellin on ethylene production, and their interactions in growth of seedlings. Plant Physiol 43 2029-2036 Gaither DH, Lutz DH, Forrence LE (1975) Abscisic acid stimulates elongation of excised pea root tips. Plant Physiol 55 948-949... [Pg.67]

Mayak S, Halevy AH (1972) Interrelationships of ethylene and abscisic acid in the control of rose petal senescence. Plant Physiol 50 341-346 McBride R, Evans ML (1977) Auxin inhibition of acid- and fusicoccin-induced elongation in lentil roots. Planta 136 97-102... [Pg.72]

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