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Molecular Systematics of Lachancea Yeasts

E. S. Naumova1, E. V. Serpova1, and G. I. Naumov1,2*

1State Research Institute of Genetics and Selection of Industrial Microorganisms, 1-yi Dorozhnyi proezd 1, 117545 Moscow, Russia; E-mail: gnaumov@yahoo.com

2Voronezh State University, Universitetskaya pl. 1, 394006 Voronezh, Russia

* To whom correspondence should be addressed.

Received August 10, 2007
This work presents the results of molecular-genetic investigation of a new yeast genus, Lachancea Kurtzman (2003). Analysis of rRNA sequences and molecular karyotyping have shown genetic homogeneity of the genus Lachancea. Yeasts of this genus have an identical haploid number of chromosomes equal to eight, whereas limiting chromosome sizes significantly differ in various species. The largest range of chromosome bands was registered in L. cidri strains (400-2800 kb), while the smallest was found in L. waltii (1400-2800 kb). The intra- and interspecies polymorphism of Lachancea chromosomes is discussed.
KEY WORDS: Lachancea yeasts, 26S rRNA, 5.8S-ITS, chromosomal DNA, molecular karyotyping, phylogenetic analysis

DOI: 10.1134/S0006297907120097