Abstract
Induction of embryogenic calli from immature zygotic embryos of maize requires the presence of 2,4-D or similar auxin-like growth regulators in the culture medium. Pulse-chase experiments with 2,4-D, using various concentrations of 2,4-D in the induction medium were tested in relation to induction of callus in the embryogenic inbred line A188 and the non-embryogenic inbred A632. Interactions of 2,4-D, 3,5-D and the auxin transport inhibitor TIBA were also studied. Pulse-chase experiments showed that exposure to 2,4-D influenced the culture response from 0.5 h onwards. After a pulse of 0.5 h, shoot and root elongation of the embryo was stimulated. A pulse of 16 h or longer induced outgrowths and callus formation at the basal side of the scutellum. Pulses of 7 days and longer resulted in the induction of friable embryogenic Type II callus in A188. Embryos were cultured at 2,4-D concentrations ranging from 0.002 to 2000 mg l−1 and optimal concentration for the induction of embryogenic callus in A188 was 2 mg l−1. At lower concentrations there was a transition between callus formation and germination; at increasing concentrations, callus induction was reduced and finally growth responses became blocked. When TIBA was added to medium without 2,4-D, root elongation decreased in a dose-dependent way suggesting the need of polar transport of endogenous auxins for root elongation. When added to medium with 2,4-D, TIBA caused suppression of callus formation, again pointing to the necessity of polar transport of 2,4-D. In combination with 2,4-D, cultures with 3,5-D resembled cultures at lower 2,4-D concentrations, pointing to a competitive interaction between 3,5-D and 2,4-D.
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Bronsema FBF, Redig P, Van Oostveen WJF, Van Onckelen HA & Van Lammeren AAM (1996) Uptake and biochemical analysis of 2,4-D in cultured zygotic embryos of Zea mays L. J. Plant Physiol. 149:363-371
Bronsema FBF, Van Oostveen WJF & Van Lammeren AAM (1997) Comparative analysis of callus formation and regeneration on cultured zygotic embryos of the inbred lines A188 and A632. Plant Cell Tiss. Org. Cult. 50: 57-65
Bronsema FBF, Van Oostveen WJF, Prinsen E & Van Lammeren AAM (1998) Distribution of [14C]dichlorophenoxyacetic acid in cultured zygotic embryos of Zea mays L. J. Plant Growth Regul. 17: 81-88
Chu CC, Wang CC, Sun CS, Hsu C, Yin KC, Chu CY & Bi FY (1975) Establishment of an efficient medium for anther culture of rice through comparative experiments of the nitrogen sources. Sci. Sin. 18:659-668
Duncan DR, Williams ME, Zehr BE & Widholm JM (1985) The production of callus capable of plant regeneration from immature embryos of numerous Zea mays genotypes. Planta 165: 322-332
Emons AMC & Kieft H (1995) Somatic embryogenesis in maize (Zea mays L.) In: Bajaj YPS (Ed) Biotechnology in Agriculture and Forestry, Vol 31: Somatic Embryogenesis and Synthetic Seed II, (pp 24-39). Springer-Verlag, Berlin, Heidelberg
Emons AMC, Samallo-Droppers A & Van der Toorn C (1993) The influence of sucrose, mannitol, L-proline, abscisic acid and gibberellic acid on the maturation of somatic embryos of Zea mays L. from suspension cultures. J. Plant Physiol. 142: 597-604
Felle H, Peters W & Palme K (1991) The electrical response of maize to auxins. Biochem. Biophys. Acta 1064: 199-204
Fisher C & Neuhaus G (1996) Influence of auxins on the establishment of bilateral symmetry in monocots. Plant J. 9: 659-669
Green CE & Phillips RL (1975) Plant regeneration from tissue culture of maize. Crop Sci. 15: 417-421
Green CE, Armstrong CL & Anderson PC (1983) Somatic cell genetics systems in corn. In: Downey K, Voellmy RW, Ahmad F, Schultz J (eds) Advances in Gene Technology: Molecular Genetics of Plants and Animals, (pp 147-157). Academic Press, New York
Lomax TL, Muday GK & Rubery PH (1995) Auxin transport. In: Davies PJ (ed) Plant Hormones, (pp 509-530). Kluwer Academic Publishers, Dordrecht
Murashige T & Skoog F (1962) A revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiol. Plant. 15: 473-497
Thomson K-S, Hertel R, Muller S & Tavares JE (1973) N-1-Naphthylphthalamic acid and 2,3,5-triiodobenzoic acid: In vitro binding to particulate cell fractions and action on auxin transport in corn coleoptiles. Planta 109: 337-352
Wain RL (1970) Studies with plant growth inhibitors. In: Carr DJ (ed) Plant Growth Substances 1970, (pp 330-335). Springer Verlag, Berlin, Heidelberg, New York
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Bronsema, F.B.F., van Oostveen, W.J.F. & van Lammeren, A.A.M. Influence of 2,4-D, TIBA and 3,5-D on the growth response of cultured maize embryos. Plant Cell, Tissue and Organ Culture 65, 45–56 (2001). https://doi.org/10.1023/A:1010605519845
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DOI: https://doi.org/10.1023/A:1010605519845