(ChIP) assays, we show that GTE6 is associated with the promoter and the start of the transcribed region of AS1 and up-regulates expression of AS1 through acetylation of histones H3 and H4. GTE6 positively regulates the expression of ASYMMETRIC LEAVES1 ( AS1), which encodes a myb-domain protein that controls proximodistal patterning of leaves. Mutations in GTE6 disrupt the formation of elliptical leaf laminae in mature leaves, whereas overexpression of GTE6 resulted in elongated juvenile leaves. GTE6 encodes a novel small bromodomain-containing protein unique to plants. We show that GENERAL TRANSCRIPTION FACTOR GROUP E6 ( GTE6) regulates differences in leaf patterning between juvenile and mature leaves in Arabidopsis. Biotechnol.The transition from the juvenile to the mature phase during vegetative development in plants is characterized by changes in Uozomi N, Kohketsu K & Kobayashi T (1993) Plant hiary root growth and metabolism in fed-batch culture on monosaccharide medium. Uozumi N, Nakashimada Y, Kato Y & Kobayashi T (1992 b) Production of artificial seed from horseradish hairy root. Uozumi N, Kato Y, Nakashimada Y & Kobayashi T (1992 a) Excretion of peroxidase from horseradish hairy root in combination with ion supplementation. Uozumi N, Kohketsu K, Kondo O, Honda H & Kobayashi T (1991) Fed-batch culture of hairy root using frtuctose as a carbon source. Tepfer D (1990) Genetic transformation using Agrobacterium rhizogenes. Taya M, Mine K, Kino-oka M, Tone S & Ichi T (1992) Production and release of pigments by culture of transformed hairy root of red beet. Taya M, Yoyama A, Nomura R, Kondo O, Matsui C & Kobayashi T (1989 b) Production of peroxidase with horseradish hairy root cells in a two step culture system. Taya M, Yoyama A, Kondo O & Kobayashi T (1989 a) Growth characteristics of plant hairy roots and their cultures in bioreactors. Tanaka N, Hayakawa M, Mano Y, Ohkawa H & Matsui C (1985) Infection of turnip and radish storage roots with Agrobacterium rhizogenes. Signs MW & Flores HE (1990) The biosynthesis potential of plant roots. Shimomura K, Sudo H, Saga H & Kamada H (1991) Shikonin production and secretion by hairy root cultures of Lithospermum erythrorhizon. Redenbaugh K, Paasch BD, Nichol JW, Kossler ME, Viss PR & Walker K (1986) Somatic seeds: Encapsulation of asexual plant embryos. Phelep M, Petit A, Martin L, Duhoux E & Tempé J (1991) Transformation and regeneration of a nitrogen-fixing tree, Allocasuarina verticillata Lam. Pierik RLM (1987) In Vitro Culture of Higher Plants. Ooms G, Karp A, Burrell MM, Twell D & Roberts J (1985) Genetic modification of potato development using Ri T-DNA. Noda T, Tanaka N, Mano Y, Nabeshima S, Ohkawa H & Matsui C (1987) Regeneration of horseradish hairy roots incited by Agrobacterium rhizogenes infection. Murashige T & Skoog F (1962) A revised medium for rapid growth and bioassays with tobacco tissue cultures. Internation Association of Plant Tissue Culture. In: Thorpe TA (Ed) Frontiers of Plant Tissue Culture (pp 15–26). Murashige T (1978) Plant growth substances in commercial uses of tissue culture. Kondo O, Honda H, Taya M & Kobayashi T (1989) Comparison of growth properties of carrot hairy root in various bioreactors. Kitto SL & Janick J (1985) Production of synthetic seeds by encapsulating asexual embryos of carrot. Kilby NJ & Hunter CS (1990) Repeated harvest of vacuole-located secondary product from in vitro grown plant cells using 1.02 MHz ultrasound. Kato Y, Uozumi N, Kimura T, Honda H & Kobayashi T (1991) Enhancement of peroxidase production and excretion from horseradish hairy roots by light, NaCl, and peroxidase-adsorption in situ.
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