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Titolo:
Allele-specific interactions between ttg and gl1 during trichome development in Arabidopsis thaliana
Autore:
Larkin, JC; Walker, JD; Bolognesi-Winfield, AC; Gray, JC; Walker, AR;
Indirizzi:
Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA Louisiana State Univ Baton Rouge LA USA 70803 , Baton Rouge, LA 70803 USA Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England Univ CambridgeCambridge England CB2 3EA Sci, Cambridge CB2 3EA, England
Titolo Testata:
GENETICS
fascicolo: 4, volume: 151, anno: 1999,
pagine: 1591 - 1604
SICI:
0016-6731(199904)151:4<1591:AIBTAG>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
EPIDERMAL-CELL FATE; TRANSCRIPTIONAL ACTIVATORS; SACCHAROMYCES-CEREVISIAE; ANTHOCYANIN PRODUCTION; FUNCTIONAL-ANALYSIS; REGULATORY-PROTEIN; GENETIC-ANALYSIS; MESSENGER-RNA; DNA-BINDING; ENCODES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Larkin, JC Louisiana03tate Univ, Dept Biol Sci, 508 Life Sci Bldg, Baton Rouge, LA 708 Louisiana State Univ 508 Life Sci Bldg Baton Rouge LA USA 70803
Citazione:
J.C. Larkin et al., "Allele-specific interactions between ttg and gl1 during trichome development in Arabidopsis thaliana", GENETICS, 151(4), 1999, pp. 1591-1604

Abstract

Trichome development in Arabidopsis thaliana is a well-characterized modelfor the study of plant cell differentiation. Two genes that play an essential role in the initiation of trichome development are GLI and TTG. Mutations in either gene prevent the initiation of most trichomes. The GLI gene encodes a myb-related transcription factor. Mutations in TTG art pleiotropic,affecting anthocyanins, root hairs, and seed coat mucilage in addition to trichomes. Six tig alleles,ve re examined and shown to form a hypomorphic series. The severity of all aspects of the ttg phenotype varied in parallel in this allelic series. The weakest allele, ttg-10, causes frequent clusters of adjacent trichomes, suggesting a role for TTG in inhibiting neighboring cells from choosing the trichome fate. This allele results from a mutation in the 5'-untranslated region of ttg and creates an out-of-frame upstreamAUG codon. The ttg-10 allele shows several unusual genetic interactions with the weak hypomorphic gl1-2 allele, including intergenic noncomplementation and a synthetic glabrous phenotype. These interactions are specific for the gl1-2 allele. The implication of these results for cur-rent models of trichome development is discussed.

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Documento generato il 18/01/21 alle ore 15:13:55