Abstract：
:Candida milleri, together with Candida humilis, is the most representative yeast species found in type I sourdough ecosystems. In this work, comparison of the ITS region and the D1/D2 domain of 26S rDNA gene partial sequences, karyotyping, mtDNA-RFLP analysis, Intron Splice Site dispersion (ISS-PCR) and (GTG)5 microsatellite analyses, assimilation test of different carbohydrates, and metabolome assessment by FT-IR analysis, were investigated in seventeen strains isolated from four different companies as well as in type strains CBS6897(T) and CBS5658(T). Most isolates were ascribed to C. milleri, even if a strong relatedness was confirmed with C. humilis as well, particularly for three strains. Genetic characterization showed a high degree of intraspecific polymorphism since 12 different genotypes were discriminated. The number of chromosomes varied from 9 to 13 and their size ranged from less than 0.3 to over 2 Mbp. Phenotypic traits let to recognize 9 different profiles of carbon sources assimilation. FT-IR spectra from yeast cells cultivated in different media and collected at different growth phases revealed a diversity of behaviour among strains in accordance with the results of PCR-based fingerprinting. A clear evidence of the polymorphic status of C. milleri species is provided thus representing an important feature for the development of technological applications in bakery industries.
journal_name
Food Microbioljournal_title
Food microbiologyauthors
Vigentini I,Antoniani D,Roscini L,Comasio A,Galafassi S,Picozzi C,Corte L,Compagno C,Dal Bello F,Cardinali G,Foschino Rdoi
10.1016/j.fm.2014.02.011subject
Has Abstractpub_date
2014-09-01 00:00:00pages
72-81eissn
0740-0020issn
1095-9998pii
S0740-0020(14)00036-7journal_volume
42pub_type
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