Abstract
Mutant Arabidopsis thaliana taeniata (tae) plants are characterized by an altered morphology of leaves and the inflorescence. At the beginning of flowering, the inflorescence produces fertile flowers morphologically intermediate between a shoot and a flower. The recessive mutation tae also causes the formation of ectopic meristems and shoot rosettes on leaves. The expressivity of the mutant characters depend on the temperature and photoperiod. Analysis of the activity of KNOX class I genes in the leaves of the tae mutant has demonstrated the expression of genes KNAT2 and STM and an increase in the expression of genes KNAT1 and KNAT6 compared to wild-type leaves. These data indicate that the TAE gene negatively regulates the KNAT1, KNAT2, KNAT6, and STM genes.
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REFERENCES
Satina, S., Blakeslee, A.F., and Avery, A.G., Demonstration of the Three Germ Layers in the Shoot Apex of Datura by Means of Induced Polyploidy in Periclinal Chimeras, Am. J. Bot., 1940, vol. 27, pp. 895–905.
Stewart, R.N. and Burk, L.G., Independence of Tissues Derived from Apical Layers in Ontogeny of the Tobacco Leaf and Ovary, Am. J. Bot., 1970, vol. 57, pp. 1010–1016.
Long, J.A., Moan, E.I., Medford, J.I., and Barton, M.K., A Member of the KNOTTED Class of Homeodomain Proteins Encoded by the STM Gene of Arabidopsis, Nature, 1996, vol. 379, no.6560, pp. 66–69.
Lincoln, C., Long, J., Yamaguchi, J., et al., A Knotted1-Like Homeobox Gene in Arabidopsis Is Expressed in the Vegetative Meristem and Dramatically Alters Leaf Morphology When Overexpressed in Transgenic Plants, Plant Cell, 1994, vol. 6, pp. 1859–1876.
Barton, M.K. and Poethig, R.S., Formation of the Shoot Apical Meristem in Arabidopsis thaliana: An Analysis of Development in the Wild Type and in the shootmeristemless Mutant, Development (Cambridge, UK), 1993, vol. 119, pp. 823–831.
Lenhard, M., Jurgens, G., and Laux, T., The WUSCHEL and SHOOTMERISTEMLESS Genes Fulfill Complementary Roles in Arabidopsis Shoot Meristem Regulation, Development (Cambridge, UK), 2002, vol. 129, pp. 3195–3206.
Smith, L.G., Greene, B., Veit, B., and Hake, S., A Dominant Mutation in the Maize Homeobox Gene, Knotted-1, Causes Its Ectopic Expression in Leaf Cells with Altered Fates, Development (Cambridge, UK), 1992, vol. 116, pp. 21–30.
Jackson, D., Veit, B., and Hake, S., Expression of Maize KNOTTED1-Related Homeobox Genes in the Shoot Apical Meristem Predicts Patterns of Morphogenesis in the Vegetative Shoot, Development (Cambridge, UK), 1994, vol. 120, pp. 405–413.
Chuck, G., Lincoln, C., and Hake, S., KNAT1 Induces Lobed Leaves with Ectopic Meristems When Overexpressed in Arabidopsis, Plant Cell, 1996, vol. 8, no.8, pp. 1277–1289.
Venglat, S.P., Dumonceaux, T., Rozwadowski, K., et al., The Homeobox Gene BREVIPEDICELLUS Is a Key Regulator of Inflorescence Architecture in Arabidopsis, Proc. Natl. Acad. Sci. USA, 2002, vol. 99, no.7, pp. 4730–4735.
Yanushkevich, S.I., Ispol’zovanie Arabidopsis v prakticheskikh zanyatiyakh po obshchei genetike (Use of Arabidopsis in Laboratory Works on General Genetics), Moscow: Mosk. Gos. Univ., 1985.
Semiarti, E., Ueno, Y., Tsukaya, H., et al., The ASYMMETRIC LEAVES2 Gene of Arabidopsis thaliana Regulates Formation of a Symmetric Lamina, Establishment of Venation and Repression of Meristem-Related Homeobox Genes in Leaves, Development (Cambridge, UK), 2001, vol. 128, pp. 1771–1783.
Moffat, B.A., McWhinne, E.A., Agarwhal, S.K., and Schaff, D.A., The Adenine Phosphoribosyltransferase-Encoding Gene of Arabidopsis thaliana, Gene, 1994, vol. 143, pp. 211–216.
Ori, N., Eshed, Y., Chuck, G., et al., Mechanisms That Control knox Gene Expression in the Arabidopsis Shoot, Development (Cambridge, UK), 2000, vol. 127, pp. 5523–5532.
Byrne, M.E., Barley, R., Curtis, M., et al., Asymmetric Leaves1 Mediates Leaf Patterning and Stem Cell Function in Arabidopsis, Nature, 2000, vol. 408, pp. 967–971.
Iwakawa, H., Ueno, Y., Semiarti, E., et al., The ASYMMETRIC LEAVES2 Gene of Arabidopsis thaliana, Required for Formation of a Symmetric Flat Leaf Lamina, Encodes a Member of a Novel Family of Proteins Characterized by Cysteine Repeats and a Leucine Zipper, Plant Cell Physiol., 2002, vol. 43, no.5, pp. 467–478.
Byrne, M.E., Simorowski, J., and Martienssen, R.A., ASYMMETRIC LEAVES1 Reveals knox Gene Redundancy in Arabidopsis, Development (Cambridge, UK), 2002, vol. 129, pp. 1957–1965.
Sawa, S., Watanabe, K., Goto, K., et al., FILAMENTOUS FLOWER, a Meristem and Organ Identity Gene of Arabidopsis, Encodes a Protein with a Zinc Finger and HMG-Related Domains, Genes Dev., 1999, vol. 13, no.9, pp. 1079–1088.
Kumaran, M.K., Bowman, J.L., and Sundaresan, V., YABBY Polarity Genes Mediate the Repression of KNOX Homeobox Genes in Arabidopsis, Plant Cell, 2002, vol. 14, no.11, pp. 2761–2770.
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Translated from Genetika, Vol. 41, No. 8, 2005, pp. 1068–1074.
Original Russian Text Copyright © 2005 by Lebedeva, Ezhova, Melzer.
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Lebedeva, O.V., Ezhova, T.A. & Melzer, S. Gene TAENIATA Is a Novel Negative Regulator of the Arabidopsis thaliana Homeobox Genes KNAT1, KNAT2, KNAT6, and STM . Russ J Genet 41, 871–876 (2005). https://doi.org/10.1007/s11177-005-0174-x
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DOI: https://doi.org/10.1007/s11177-005-0174-x