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Wang Y, Xu J, Ben Abid F, Salah H, Sundararaju S, Al Ismail K, Wang K, Sara Matthew L, Taj-Aldeen S, Ibrahim EB, Tang P, Perez-Lopez A, Tsui CKM. Population genomic analyses reveal high diversity, recombination and nosocomial transmission among Candida glabrata ( Nakaseomyces glabrata) isolates causing invasive infections. Microb Genom 2024; 10:001179. [PMID: 38226964 PMCID: PMC10868614 DOI: 10.1099/mgen.0.001179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/21/2023] [Indexed: 01/17/2024] Open
Abstract
Candida glabrata is a commensal yeast of the gastrointestinal tract and skin of humans. However, it causes opportunistic infections in immunocompromised patients, and is the second most common Candida pathogen causing bloodstream infections. Although there are many studies on the epidemiology of C. glabrata infections, the fine- and large-scale geographical nature of C. glabrata remain incompletely understood. Here we investigated both the fine- and large-scale population structure of C. glabrata through genome sequencing of 80 clinical isolates obtained from six tertiary hospitals in Qatar and by comparing with global collections. Our fine-scale analyses revealed high genetic diversity within the Qatari population of C. glabrata and identified signatures of recombination, inbreeding and clonal expansion within and between hospitals, including evidence for nosocomial transmission among coronavirus disease 2019 (COVID-19) patients. In addition to signatures of recombination at the population level, both MATa and MATα alleles were detected in most hospitals, indicating the potential for sexual reproduction in clinical environments. Comparisons with global samples showed that the Qatari C. glabrata population was very similar to those from other parts of the world, consistent with the significant role of recent anthropogenic activities in shaping its population structure. Genome-wide association studies identified both known and novel genomic variants associated with reduced susceptibilities to fluconazole, 5-flucytosine and echinocandins. Together, our genomic analyses revealed the diversity, transmission patterns and antifungal drug resistance mechanisms of C. glabrata in Qatar as well as the relationships between Qatari isolates and those from other parts of the world.
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Affiliation(s)
- Yue Wang
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Jianping Xu
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Fatma Ben Abid
- Department of Medicine, Division of Infectious Diseases, Hamad Medical Corporation, Doha, Qatar
- Weill Cornell Medicine-Qatar, Doha, Qatar
- Communicable Disease Centre, Hamad Medical Corporation, Doha, Qatar
| | - Husam Salah
- Division of Microbiology, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | | | - Khalil Al Ismail
- Communicable Disease Centre, Hamad Medical Corporation, Doha, Qatar
| | - Kun Wang
- Research Department, Sidra Medicine, Doha, Qatar
| | | | - Saad Taj-Aldeen
- Division of Microbiology, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - Emad B. Ibrahim
- Division of Microbiology, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - Patrick Tang
- Weill Cornell Medicine-Qatar, Doha, Qatar
- Division of Microbiology, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - Andres Perez-Lopez
- Weill Cornell Medicine-Qatar, Doha, Qatar
- Division of Microbiology, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - Clement K. M. Tsui
- Division of Microbiology, Department of Pathology, Sidra Medicine, Doha, Qatar
- Infectious Diseases Research Laboratory, National Center for Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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Hernández-Hernández G, Vera-Salazar LA, Castanedo L, López-Fuentes E, Gutiérrez-Escobedo G, De Las Peñas A, Castaño I. Abf1 Is an Essential Protein That Participates in Cell Cycle Progression and Subtelomeric Silencing in Candida glabrata. J Fungi (Basel) 2021; 7:jof7121005. [PMID: 34946988 PMCID: PMC8708972 DOI: 10.3390/jof7121005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 12/02/2022] Open
Abstract
Accurate DNA replication and segregation is key to reproduction and cell viability in all organisms. Autonomously replicating sequence-binding factor 1 (Abf1) is a multifunctional protein that has essential roles in replication, transcription, and regional silencing in the model yeast Saccharomyces cerevisiae. In the opportunistic pathogenic fungus Candida glabrata, which is closely related to S. cerevisiae, these processes are important for survival within the host, for example, the regulation of transcription of virulence-related genes like those involved in adherence. Here, we describe that CgABF1 is an essential gene required for cell viability and silencing near the telomeres, where many adhesin-encoding genes reside. CgAbf1 mediated subtelomeric silencing depends on the 43 C-terminal amino acids. We also found that abnormal expression, depletion, or overexpression of Abf1, results in defects in nuclear morphology, nuclear segregation, and transit through the cell cycle. In the absence of ABF1, cells are arrested in G2 but start cycling again after 9 h, coinciding with the loss of cell viability and the appearance of cells with higher DNA content. Overexpression of CgABF1 causes defects in nuclear segregation and cell cycle progression. We suggest that these effects could be due to the deregulation of DNA replication.
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Affiliation(s)
- Grecia Hernández-Hernández
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José No. 2055 Col. Lomas 4 Sección, San Luis Potosí CP 78233, Mexico; (G.H.-H.); (L.A.V.-S.); (G.G.-E.); (A.D.L.P.)
| | - Laura A. Vera-Salazar
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José No. 2055 Col. Lomas 4 Sección, San Luis Potosí CP 78233, Mexico; (G.H.-H.); (L.A.V.-S.); (G.G.-E.); (A.D.L.P.)
| | - Leonardo Castanedo
- Department of Plant Physiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Universitätsstrasse, 150 ND3/30, D-44801 Bochum, Germany;
| | - Eunice López-Fuentes
- Division of Hematology and Oncology, Department of Pediatrics, University of California, San Francisco, CA 94158, USA;
| | - Guadalupe Gutiérrez-Escobedo
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José No. 2055 Col. Lomas 4 Sección, San Luis Potosí CP 78233, Mexico; (G.H.-H.); (L.A.V.-S.); (G.G.-E.); (A.D.L.P.)
| | - Alejandro De Las Peñas
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José No. 2055 Col. Lomas 4 Sección, San Luis Potosí CP 78233, Mexico; (G.H.-H.); (L.A.V.-S.); (G.G.-E.); (A.D.L.P.)
| | - Irene Castaño
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José No. 2055 Col. Lomas 4 Sección, San Luis Potosí CP 78233, Mexico; (G.H.-H.); (L.A.V.-S.); (G.G.-E.); (A.D.L.P.)
- Correspondence: ; Tel.: +52-444-834-2038
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Van Genechten W, Van Dijck P, Demuyser L. Fluorescent toys 'n' tools lighting the way in fungal research. FEMS Microbiol Rev 2021; 45:fuab013. [PMID: 33595628 PMCID: PMC8498796 DOI: 10.1093/femsre/fuab013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 02/14/2021] [Indexed: 12/13/2022] Open
Abstract
Although largely overlooked compared to bacterial infections, fungal infections pose a significant threat to the health of humans and other organisms. Many pathogenic fungi, especially Candida species, are extremely versatile and flexible in adapting to various host niches and stressful situations. This leads to high pathogenicity and increasing resistance to existing drugs. Due to the high level of conservation between fungi and mammalian cells, it is hard to find fungus-specific drug targets for novel therapy development. In this respect, it is vital to understand how these fungi function on a molecular, cellular as well as organismal level. Fluorescence imaging allows for detailed analysis of molecular mechanisms, cellular structures and interactions on different levels. In this manuscript, we provide researchers with an elaborate and contemporary overview of fluorescence techniques that can be used to study fungal pathogens. We focus on the available fluorescent labelling techniques and guide our readers through the different relevant applications of fluorescent imaging, from subcellular events to multispecies interactions and diagnostics. As well as cautioning researchers for potential challenges and obstacles, we offer hands-on tips and tricks for efficient experimentation and share our expert-view on future developments and possible improvements.
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Affiliation(s)
- Wouter Van Genechten
- VIB-KU Leuven Center for Microbiology, Kasteelpark Arenberg 31, 3001 Leuven-heverlee, Belgium
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven-Heverlee, Belgium
- Laboratory for Nanobiology, Department of Chemistry, KU Leuven, Celestijnenlaan 200g, 3001 Leuven-Heverlee, Belgium
| | - Patrick Van Dijck
- VIB-KU Leuven Center for Microbiology, Kasteelpark Arenberg 31, 3001 Leuven-heverlee, Belgium
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven-Heverlee, Belgium
| | - Liesbeth Demuyser
- VIB-KU Leuven Center for Microbiology, Kasteelpark Arenberg 31, 3001 Leuven-heverlee, Belgium
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven-Heverlee, Belgium
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Maroc L, Zhou-Li Y, Boisnard S, Fairhead C. A single Ho-induced double-strand break at the MAT locus is lethal in Candida glabrata. PLoS Genet 2020; 16:e1008627. [PMID: 33057400 PMCID: PMC7591073 DOI: 10.1371/journal.pgen.1008627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 10/27/2020] [Accepted: 09/12/2020] [Indexed: 01/24/2023] Open
Abstract
Mating-type switching is a complex mechanism that promotes sexual reproduction in Saccharomycotina. In the model species Saccharomyces cerevisiae, mating-type switching is initiated by the Ho endonuclease that performs a site-specific double-strand break (DSB) at MAT, repaired by homologous recombination (HR) using one of the two silent mating-type loci, HMLalpha and HMRa. The reasons why all the elements of the mating-type switching system have been conserved in some Saccharomycotina, that do not show a sexual cycle nor mating-type switching, remain unknown. To gain insight on this phenomenon, we used the yeast Candida glabrata, phylogenetically close to S. cerevisiae, and for which no spontaneous and efficient mating-type switching has been observed. We have previously shown that expression of S. cerevisiae’s Ho (ScHo) gene triggers mating-type switching in C. glabrata, but this leads to massive cell death. In addition, we unexpectedly found, that not only MAT but also HML was cut in this species, suggesting the formation of multiple chromosomal DSBs upon HO induction. We now report that HMR is also cut by ScHo in wild-type strains of C. glabrata. To understand the link between mating-type switching and cell death in C. glabrata, we constructed strains mutated precisely at the Ho recognition sites. We find that even when HML and HMR are protected from the Ho-cut, introducing a DSB at MAT is sufficient to induce cell death, whereas one DSB at HML or HMR is not. We demonstrate that mating-type switching in C. glabrata can be triggered using CRISPR-Cas9, without high lethality. We also show that switching is Rad51-dependent, as in S. cerevisiae, but that donor preference is not conserved in C. glabrata. Altogether, these results suggest that a DSB at MAT can be repaired by HR in C. glabrata, but that repair is prevented by ScHo. Mating-type switching is one of the strategies developed by fungi to promote sexual reproduction and propagation. This mechanism enables one haploid cell to give rise to a cell of the opposite mating-type so that they can mate. It has been extensively studied in the yeast S. cerevisiae in which it relies on a programmed double-strand break performed by the Ho endonuclease at the MAT locus which determines sexual identity. Little is known about why the mating-type switching components have been conserved in species like C. glabrata, in which neither sexual reproduction nor mating-type switching is observed. We have previously shown that mating-type switching can be triggered, in C. glabrata, by expression of the HO gene from S. cerevisiae but this leads to massive cell death. In this work, we show that mating-type switching in C. glabrata can be triggered by CRISPR-Cas9 and without any high lethality. We demonstrate that the cut at MAT is only lethal when the Ho endonuclease performs the break, a situation unique to C. glabrata. Our work points to a degeneration of the mating-type switching system in C. glabrata. Further studies of this phenomenon should shed light on the evolution of mating systems in asexual yeasts.
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Affiliation(s)
- Laetitia Maroc
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE—Le Moulon, Gif-sur-Yvette, France
| | - Youfang Zhou-Li
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE—Le Moulon, Gif-sur-Yvette, France
| | - Stéphanie Boisnard
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Cécile Fairhead
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, GQE—Le Moulon, Gif-sur-Yvette, France
- * E-mail:
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Kaplan E, Aktaş D, Önder Ş, Metin B, Döğen A, Oz Y, Ilkit M. Mating genotypes and susceptibility profiles of clinical isolates of Candida glabrata from Turkey. Mycoses 2019; 62:796-802. [PMID: 31134666 DOI: 10.1111/myc.12945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 12/01/2022]
Abstract
The sexual cycle of Candida glabrata is not known; however, genomic evidence is indicative of recombination among subpopulations and the genome harbours genes necessary for undergoing mating and meiosis, which may increase fitness. The relationship between specific mating type-like (MTL) loci and antifungal susceptibility is not well understood in C. glabrata. We investigated different combinations of clinical C. glabrata isolate mating types and their antifungal susceptibility profiles. Allele profiles of the mating genes of 103 clinical C. glabrata isolates were identified, and their antifungal susceptibility to azoles, echinocandins and amphotericin B were compared. The majority (88.3%) of screened isolates harboured the a allele in the locus. The MTL1, MTL2 and MTL3 loci harboured a (88.3%), a (95.1%), and α (71.8%) alleles, respectively. The C. glabrata isolates were susceptible to echinocandins but displayed high minimal inhibitory concentrations (MICs) for azoles. The MIC ranges and MIC90 values of all isolates were 1.0 to ≥64 and 8.0 μg mL-1 for fluconazole, 0.06 to ≥16.0 and 0.5 μg mL-1 for voriconazole, 0.06 to ≥16.0 and 1.0 μg mL-1 for posaconazole, ≤0.015 to 0.06, and 0.03 μg mL-1 for caspofungin, ≤0.015 to 0.06 and 0.015 μg mL-1 for anidulafungin and 0.5-2 and 2.0 μg mL-1 for amphotericin B, respectively. The mating gene alleles of the clinical C. glabrata isolates were not associated with differences in the MICs of the tested antifungals, except for the MTL3 α-allele and echinocandins. The mating genotypes of the clinical C. glabrata isolates had no recognisable common effect on antifungal susceptibility.
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Affiliation(s)
- Engin Kaplan
- Advanced Technology Education, Research, and Application Center, Mersin University, Mersin, Turkey.,Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Zonguldak Bülent Ecevit, Zonguldak, Turkey
| | - Deniz Aktaş
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
| | - Şükran Önder
- Department of Microbiology, Division of Mycology, Faculty of Medicine, University of Eskisehir Osmangazi, Eskisehir, Turkey
| | - Banu Metin
- Department of Food Engineering, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - Aylin Döğen
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Mersin, Mersin, Turkey
| | - Yasemin Oz
- Department of Microbiology, Division of Mycology, Faculty of Medicine, University of Eskisehir Osmangazi, Eskisehir, Turkey
| | - Macit Ilkit
- Department of Microbiology, Division of Mycology, Faculty of Medicine, University of Çukurova, Adana, Turkey
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Candida glabrata: A Lot More Than Meets the Eye. Microorganisms 2019; 7:microorganisms7020039. [PMID: 30704135 PMCID: PMC6407134 DOI: 10.3390/microorganisms7020039] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/21/2019] [Accepted: 01/29/2019] [Indexed: 01/17/2023] Open
Abstract
Candida glabrata is an opportunistic human fungal pathogen that causes superficial mucosal and life-threatening bloodstream infections in individuals with a compromised immune system. Evolutionarily, it is closer to the non-pathogenic yeast Saccharomyces cerevisiae than to the most prevalent Candida bloodstream pathogen, C. albicans. C. glabrata is a haploid budding yeast that predominantly reproduces clonally. In this review, we summarize interactions of C. glabrata with the host immune, epithelial and endothelial cells, and the ingenious strategies it deploys to acquire iron and phosphate from the external environment. We outline various attributes including cell surface-associated adhesins and aspartyl proteases, biofilm formation and stress response mechanisms, that contribute to the virulence of C. glabrata. We further discuss how, C. glabrata, despite lacking morphological switching and secreted proteolytic activity, is able to disarm macrophage, dampen the host inflammatory immune response and replicate intracellularly.
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Chromatin Loop Formation Induced by a Subtelomeric Protosilencer Represses EPA Genes in Candida glabrata. Genetics 2018; 210:113-128. [PMID: 30002080 DOI: 10.1534/genetics.118.301202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 07/09/2018] [Indexed: 01/05/2023] Open
Abstract
Adherence, an important virulence factor, is mediated by the EPA (Epithelial Adhesin) genes in the opportunistic pathogen Candida glabrata Expression of adhesin-encoding genes requires tight regulation to respond to harsh environmental conditions within the host. The majority of EPA genes are localized in subtelomeric regions regulated by subtelomeric silencing, which depends mainly on Rap1 and the Sir proteins. In vitro adhesion to epithelial cells is primarily mediated by Epa1. EPA1 forms a cluster with EPA2 and EPA3 in the right telomere of chromosome E (E-R). This telomere contains a cis-acting regulatory element, the protosilencer Sil2126 between EPA3 and the telomere. Interestingly, Sil2126 is only active in the context of its native telomere. Replacement of the intergenic regions between EPA genes in E-R revealed that cis-acting elements between EPA2 and EPA3 are required for Sil2126 activity when placed 32 kb away from the telomere (Sil@-32kb). Sil2126 contains several putative binding sites for Rap1 and Abf1, and its activity depends on these proteins. Indeed, Sil2126 binds Rap1 and Abf1 at its native position and also when inserted at -32 kb, a silencing-free environment in the parental strain. In addition, we found that Sil@-32kb and Sil2126 at its native position can physically interact with the intergenic regions between EPA1-EPA2 and EPA2-EPA3 respectively, by chromosome conformation capture assays. We speculate that Rap1 and Abf1 bound to Sil2126 can recruit the Silent Information Regulator complex, and together mediate silencing in this region, probably through the formation of a chromatin loop.
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Leiva-Peláez O, Gutiérrez-Escobedo G, López-Fuentes E, Cruz-Mora J, De Las Peñas A, Castaño I. Molecular characterization of the silencing complex SIR in Candida glabrata hyperadherent clinical isolates. Fungal Genet Biol 2018; 118:21-31. [PMID: 29857197 DOI: 10.1016/j.fgb.2018.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/16/2018] [Accepted: 05/28/2018] [Indexed: 11/30/2022]
Abstract
An important virulence factor for the fungal pathogen Candida glabrata is the ability to adhere to the host cells, which is mediated by the expression of adhesins. Epa1 is responsible for ∼95% of the in vitro adherence to epithelial cells and is the founding member of the Epa family of adhesins. The majority of EPA genes are localized close to different telomeres, which causes transcriptional repression due to subtelomeric silencing. In C. glabrata there are three Sir proteins (Sir2, Sir3 and Sir4) that are essential for subtelomeric silencing. Among a collection of 79 clinical isolates, some display a hyperadherent phenotype to epithelial cells compared to our standard laboratory strain, BG14. These isolates also express several subtelomeric EPA genes simultaneously. We cloned the SIR2, SIR3 and SIR4 genes from the hyperadherent isolates and from the BG14 and the sequenced strain CBS138 in a replicative vector to complement null mutants in each of these genes in the BG14 background. All the SIR2 and SIR4 alleles tested from selected hyper-adherent isolates were functional and efficient to silence a URA3 reporter gene inserted in a subtelomeric region. The SIR3 alleles from these isolates were also functional, except the allele from isolate MC2 (sir3-MC2), which was not functional to silence the reporter and did not complement the hyperadherent phenotype of the BG14 sir3Δ. Consistently, sir3-MC2 allele is recessive to the SIR3 allele from BG14. Sir3 and Sir4 alleles from the hyperadherent isolates contain several polymorphisms and two of them are present in all the hyperadherent isolates analyzed. Instead, the Sir3 and Sir4 alleles from the BG14 and another non-adherent isolate do not display these polymorphisms and are identical to each other. The particular combination of polymorphisms in sir3-MC2 and in SIR4-MC2 could explain in part the hyperadherent phenotype displayed by this isolate.
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Affiliation(s)
- Osney Leiva-Peláez
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico
| | - Guadalupe Gutiérrez-Escobedo
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico
| | - Eunice López-Fuentes
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico
| | - José Cruz-Mora
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico
| | - Alejandro De Las Peñas
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico
| | - Irene Castaño
- IPICYT, Instituto Potosino de Investigación Científica y Tecnológica, División de Biología Molecular, Camino a la Presa San José #2055, Col. Lomas 4a, San Luis Potosí 78216, Mexico.
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