Abstract:
:Ribosomal DNA (rDNA) copy number variation (CNV) has major physiological implications for all organisms, but how it varies for fungi, an ecologically ubiquitous and important group of microorganisms, has yet to be systemically investigated. Here, we examine rDNA CNV using an in silico read depth approach for 91 fungal taxa with sequenced genomes and assess copy number conservation across phylogenetic scales and ecological lifestyles. rDNA copy number varied considerably across fungi, ranging from an estimated 14 to 1,442 copies (mean = 113, median = 82), and copy number similarity was inversely correlated with phylogenetic distance. No correlations were found between rDNA CNV and fungal trophic mode, ecological guild or genome size. Taken together, these results show that like other microorganisms, fungi exhibit substantial variation in rDNA copy number, which is linked to their phylogeny in a scale-dependent manner.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Lofgren LA,Uehling JK,Branco S,Bruns TD,Martin F,Kennedy PGdoi
10.1111/mec.14995subject
Has Abstractpub_date
2019-02-01 00:00:00pages
721-730issue
4eissn
0962-1083issn
1365-294Xjournal_volume
28pub_type
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