Abstract:
AIMS:This work focuses on the development of a method for the identification of pathogenic yeast. With this aim, we target the nucleotide sequence of the RPS0 gene of pathogenic yeast species with specific PCR primers. PCR analysis was performed with both the genomic DNA, whole cells of clinical isolates of Candida species and clinical samples. METHODS AND RESULTS:A single pairs of primers, deduced from the nucleotide sequence of the RPS0 gene from pathogenic yeast, were used in PCR analysis performed with both the genomic DNA and whole cells of clinical isolates of Candida species and clinical samples. The primers designed are highly specific for their respective species and produce amplicons of the expected sizes and fail to amplify any DNA fragment from the other species tested. The set of primers was tested successfully for the identification of yeast from colonies, blood cultures and clinical samples. These results indicate that genes containing intron sequences may be useful for designing species-specific primers for the identification of fungal strains by PCR. The sensitivity of the method with genomic DNA was evaluated with decreasing DNA concentrations (200 ng to 1 pg) and different cell amounts (10(7)-10(5) cells). CONCLUSION:The results obtained show that the amplification of RPS0 sequences may be suitable for the identification of pathogenic and other yeast species. SIGNIFICANCE AND IMPACT OF THE STUDY:Identification of Candida species using molecular approaches with high discriminatory power is important in determining adequate measures for the interruption of transmission of this yeast. The approach described in this work is based on standard technology, and it is specific, sensitive and does not involve complex and expensive equipment. Furthermore, the method developed in this work not only can be used in eight yeast species, but also provides the basis to design primers for other fungi species of clinical, industrial or environmental interest.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Martínez JM,Gómez EV,Pemán J,Cantón E,García MG,del Castillo Agudo Ldoi
10.1111/j.1365-2672.2009.04595.xsubject
Has Abstractpub_date
2010-06-01 00:00:00pages
1917-27issue
6eissn
1364-5072issn
1365-2672pii
JAM4595journal_volume
108pub_type
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