fw2.2: a quantitative trait locus key to the evolution of tomato fruit size.
Science
; 289(5476): 85-8, 2000 Jul 07.
Article
en En
| MEDLINE
| ID: mdl-10884229
ABSTRACT
Domestication of many plants has correlated with dramatic increases in fruit size. In tomato, one quantitative trait locus (QTL), fw2.2, was responsible for a large step in this process. When transformed into large-fruited cultivars, a cosmid derived from the fw2.2 region of a small-fruited wild species reduced fruit size by the predicted amount and had the gene action expected for fw2.2. The cause of the QTL effect is a single gene, ORFX, that is expressed early in floral development, controls carpel cell number, and has a sequence suggesting structural similarity to the human oncogene c-H-ras p21. Alterations in fruit size, imparted by fw2.2 alleles, are most likely due to changes in regulation rather than in the sequence and structure of the encoded protein.
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Banco de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
/
Genes de Plantas
/
Solanum lycopersicum
/
Carácter Cuantitativo Heredable
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Año:
2000
Tipo del documento:
Article