Light-induced rhythmic changes in thermotolerance in stationary-phase cells of Candida utilis

Autores/as

  • Miguel A. Lapeña Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Jero Vicente-Soler Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Teresa Soto Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Marisa Madrid Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Andrés Núñez Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Encarnación García Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • José Cansado Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain
  • Mariano Gacto Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Spain

Palabras clave:

Candida utilis, thermotolerance, circadian rhythms, light

Resumen

In synchronized light-dark cycles, stationary-phase cultures of the budding yeast Candida utilis were able to survive heat treatment at 50ºC with an apparent circadian-like rhythm related to the onset of light. However, in continuous darkness this pattern did not run freely and was markedly dampened. We discuss these findings in terms of the potential circadian control of heat tolerance, which has been described in the fission yeast Schizosaccharomyces pombe. Our results suggest that the resistance pattern observed in C. utilis is most likely an adaptive response to the light-induced generation of reactive oxygen species rather than the occurrence of a truly endogenous circadian rhythm. [Int Microbiol 2006; 9(1):61-64]

Descargas

Publicado

2010-02-25

Número

Vol. 9 Núm. 1 (2006)

Sección

Research Notes

Licencia

Submission of a manuscript to International Microbiology implies: that the work described has not been published before, including publication in the World Wide Web (except in the form of an Abstract or as part of a published lecture, review, or thesis); that it is not under consideration for publication elsewhere; that all the coauthors have agreed to its publication. The corresponding author signs for and accepts responsability for releasing this material and will act on behalf of any and all coauthors regarding the editorial review and publication process.

If an article is accepted for publication in International Microbiology, the authors (or other copyright holder) must transfer to the journal the right–not exclusive–to reproduce and distribute the article including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature. Nevertheless, all article in International Microbiology will be available on the Internet to any reader at no cost. The journal allows users to freely download, copy, print, distribute, search, and link to the full text of any article, provided the authorship and source of the published article is cited. The copyright owner's consent does not include copying for new works, or resale. In these cases, the specific written permission of International Microbiology must first be obtained.

Authors are requested to create a link to the published article on the journal's website. The link must be accompanied by the following text: "The original publication is available on LINK at <http://www.im.microbios.org>. Please use the appropiate URL for the article in LINK. Articles disseminated via LINK are indexed, abstracted, and referenced by many abstracting and information services, bibliographic networks, subscription agencies, library networks, and consortia.