INVESTIGADORES
GOMEZ Federico Hernan
artículos
Título:
Quantitative trait locus for starvation resistance in an intercontinental set of mapping populations of Drosophila melanogaster.
Autor/es:
GOMEZ F., DEFAYS R., SAMBUCETTI P., SCANNAPIECO A., NORRY F.M., LOESCHCKE V.
Revista:
FLY
Editorial:
LANDES BIOSCIENCE
Referencias:
Lugar: Austin, TX 78701 ; Año: 2009 vol. 3 p. 247 - 252
ISSN:
1933-6934
Resumen:
Starvation resistance (SR) is an important trait for survival of insects in the wild. We used recombinant inbred lines (RIL)
to search for quantitative trait loci (QTL) in crosses between intercontinental inbred lines that were originally selected for
heat-knockdown resistance. SR was measured as the time of survival under repeated events of starvation. SR was consistently
higher in females than in males. Composite interval mapping identified one QTL region (cytological range 64D-66E2) on the
left arm of chromosome 3 in males, and no QTL was found in females. Many candidate genes that were identified in previous
studies of QTL for stress resistance are included within this QTL region. The QTL-allele that decreased SR was found in the
line originating from the colder population (Denmark). We discuss our results with regard to multiple candidate genes, noncolocalization
with thermotolerance QTL, and possible geographical variation.