AI Article Synopsis
- Ribosomal DNA (rDNA) copy number variation (CNV) is crucial for understanding physiological processes in organisms, but its analysis in fungi has been limited.
- Researchers investigated rDNA CNV in 91 fungal taxa using a computational approach, revealing significant variations in copy numbers (from 14 to 1,442), with an average of 113 copies.
- The study found that rDNA copy number similarity decreased with increasing phylogenetic distance, but there was no connection between rDNA CNV and factors like ecological roles or genome size, highlighting the complex relationship between rDNA copy number and evolutionary history among fungi.
Article 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.
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| http://dx.doi.org/10.1111/mec.14995 | DOI Listing |
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