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Titolo:
Genetic control of trichome branch number in Arabidopsis: the roles of theFURCA loci
Autore:
Luo, DL; Oppenheimer, DG;
Indirizzi:
Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA Univ Alabama Tuscaloosa AL USA 35487 t Biol Sci, Tuscaloosa, AL 35487 USA Univ Alabama, Coalit Biomol Prod, Tuscaloosa, AL 35487 USA Univ Alabama Tuscaloosa AL USA 35487 iomol Prod, Tuscaloosa, AL 35487 USA
Titolo Testata:
DEVELOPMENT
fascicolo: 24, volume: 126, anno: 1999,
pagine: 5547 - 5557
SICI:
0950-1991(199912)126:24<5547:GCOTBN>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
THALIANA L HEYNH; CELL-WALLS; MORPHOGENESIS; GIBBERELLINS; ENLARGEMENT; REDUNDANCY; GROWTH;
Keywords:
Arabidopsis thaliana; trichome; cell shape; cell differentiation; cell expansion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Oppenheimer, DG Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA UnivAlabama Tuscaloosa AL USA 35487 aloosa, AL 35487 USA
Citazione:
D.L. Luo e D.G. Oppenheimer, "Genetic control of trichome branch number in Arabidopsis: the roles of theFURCA loci", DEVELOPMENT, 126(24), 1999, pp. 5547-5557

Abstract

We are using trichome (hair) morphogenesis as a model to study how plant cell shape is controlled. During a screen for new mutations that affect trichome branch initiation in Arabidopsis, we identified seven new mutants thatshow a reduction in trichome branch number from three branches to two. These mutations were named furca, after the Latin word for two-pronged fork. These seven recessive mutations were placed into four complementation groupsthat define four new genes: FURCA1, FURCA2, FURCA3 and FURCA4. The trichome branch number phenotype indicates that the FURCA genes encode positive regulators of trichome branch initiation. Analysis of double mutants suggeststhat primary and secondary branch initiation events are not genetically distinct, but rely on the levels of partially redundant groups of regulators of trichome branch initiation. Based on the analysis of both epistatic and additive genetic interactions between the FURCA genes and other genes that control trichome branch number, me propose a model that explains how these genes interact to control trichome branch initiation. This model successfully predicts the phenotypes of all the single and double mutants examined and suggests points of control of the trichome branch pathway.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 03:21:45