RT Journal Article T1 The lack of upstream elements of the Cek1 and Hog1 mediated pathways leads to a synthetic lethal phenotype upon osmotic stress in Candida albicans A1 Herrero de Dios, Carmen María A1 Alonso Monge, Rebeca María Del Mar A1 Pla Alonso, Jesús AB Different signal transduction pathways mediated by MAP kinases have been described in Candida albicans. These pathways sense different stimuli and, therefore, elaborate specific responses. Hog1 was identified as the MAPK that is primarily involved in stress response and virulence, while Cek1 was more specific to cell wall biogenesis, mating and biofilm formation. In the present work, mutants defective in both pathways have been characterized under osmotic stress. Both routes are required for a full response against high osmotic challenge, since mutants defective in both pathways displayed aberrant morphology, cell polarity defects and abnormal chitin deposition, which correlate with loss of viability and appearance of apoptotic markers. These alterations occurred in spite of proper Hog1 and Cek1 phosphorylation and increased intra-cellular glycerol accumulation. The relevance of both routes in virulence is shown as ssk1 msb2 sho1 opy2 mutants are avirulent in a mouse systemic model of infection and display reduced virulence in the Galleria mellonella model. PB Elsevier SN 1087-1845 YR 2014 FD 2014-06-04 LK https://hdl.handle.net/20.500.14352/34765 UL https://hdl.handle.net/20.500.14352/34765 LA eng NO Herrero De Dios, C. M., Alonso Monge, R. M. M., Pla Alonso, J. «The Lack of Upstream Elements of the Cek1 and Hog1 Mediated Pathways Leads to a Synthetic Lethal Phenotype upon Osmotic Stress in Candida Albicans». Fungal Genetics and Biology, vol. 69, agosto de 2014, pp. 31-42. DOI.org (Crossref), https://doi.org/10.1016/j.fgb.2014.05.010. NO Comunidad de Madrid NO Ministerio de Educación, Formación Profesional y Deportes (España) DS Docta Complutense RD 18 abr 2025