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Phylogenetic and Phylogenomic Definition of Rhizopus Species

Gryganskyi, Andrii and Golan, Jacob and Dolatabadi, Somayeh and Mondo, Stephen and Robb, Sofia and Idnurm, Alexander and Muszewska, Anna and Steczkiewicz, Kamil and Masonjones, Sawyer and Liao, Hui-Ling and Gajdeczka, Michael T. and Anike, Felicia and Vuek, Antonina and Anishchenko, Iryna M. and Voigt, Kerstin and de Hoog, G. Sybren and Smith, Matthew E. and Heitman, Joseph and Vilgalys, Rytas and Stajich, Jason E. (2018) Phylogenetic and Phylogenomic Definition of Rhizopus Species. G3: Genes|Genomes|Genetics . g3.200235.2018. ISSN 2160-1836

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Official URL: http://doi.org/10.1534/g3.118.200235

Abstract

Phylogenomic approaches have the potential to improve confidence about the inter-relationships of species in the order Mucorales within the fungal tree of life. Rhizopus species are especially important as plant and animal pathogens and bioindustrial fermenters for food and metabolite production. A dataset of 192 orthologous genes was used to construct a phylogenetic tree of 21 Rhizopus strains, classified into four species isolated from habitats of industrial, medical and environmental importance. The phylogeny indicates that the genus Rhizopus consists of three major clades, with R. microsporus as the basal species and the sister lineage to R. stolonifer and two closely related species R. arrhizus and R. delemar A comparative analysis of the mating type locus across Rhizopus reveals that its structure is flexible even between different species in the same genus, but shows similarities between Rhizopus and other mucoralean fungi. The topology of single-gene phylogenies built for two genes involved in mating is similar to the phylogenomic tree. Comparison of the total length of the genome assemblies showed that genome size varies by as much as three-fold within a species and is driven by changes in transposable element copy numbers and genome duplications.

Item Type:Article
Subjects:Q Science > QR Microbiology
Divisions:Department of Microbial Biochemistry
ID Code:1524
Deposited By: dr Anna Muszewska
Deposited On:24 Apr 2018 08:36
Last Modified:24 Apr 2018 08:36

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