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Artículo

Spontaneous circadian rhythms in a cold-adapted natural isolate of Aureobasidium pullulans

Franco, Diana LorenaIcon ; Canessa, Paulo; Bellora, NicolásIcon ; Risau Gusman, Sebastian LuisIcon ; Olivares Yañez, Consuelo; Pérez Lara, Rodrigo; Libkind Frati, DiegoIcon ; Larrondo, Luis F.; Marpegan, LucianoIcon
Fecha de publicación: 10/2017
Editorial: Nature Publishing Group
Revista: Scientific Reports
e-ISSN: 2045-2322
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Circadian systems enable organisms to synchronize their physiology to daily and seasonal environmental changes relying on endogenous pacemakers that oscillate with a period close to 24 h even in the absence of external timing cues. The oscillations are achieved by intracellular transcriptional/translational feedback loops thoroughly characterized for many organisms, but still little is known about the presence and characteristics of circadian clocks in fungi other than Neurospora crassa. We sought to characterize the circadian system of a natural isolate of Aureobasidium pullulans, a cold-adapted yeast bearing great biotechnological potential. A. pullulans formed daily concentric rings that were synchronized by light/dark cycles and were also formed in constant darkness with a period of 24.5 h. Moreover, these rhythms were temperature compensated, as evidenced by experiments conducted at temperatures as low as 10 °C. Finally, the expression of clock-essential genes, frequency, white collar-1, white collar-2 and vivid was confirmed. In summary, our results indicate the existence of a functional circadian clock in A. pullulans, capable of sustaining rhythms at very low temperatures and, based on the presence of conserved clock-gene homologues, suggest a molecular and functional relationship to well-described circadian systems.
Palabras clave: Circadian Rhythms , Fungi , Bioinformatics , Oscillatory Systems
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/34270
URL: http://www.nature.com/articles/s41598-017-14085-6
DOI: http://dx.doi.org/10.1038/s41598-017-14085-6
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Franco, Diana Lorena; Canessa, Paulo; Bellora, Nicolás; Risau Gusman, Sebastian Luis; Olivares Yañez, Consuelo; et al.; Spontaneous circadian rhythms in a cold-adapted natural isolate of Aureobasidium pullulans; Nature Publishing Group; Scientific Reports; 7; 1; 10-2017; 1-12; 13837
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