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Wolters JF, LaBella AL, Opulente DA, Rokas A, Hittinger CT. Mitochondrial genome diversity across the subphylum Saccharomycotina. Front Microbiol 2023; 14:1268944. [PMID: 38075892 PMCID: PMC10701893 DOI: 10.3389/fmicb.2023.1268944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/31/2023] [Indexed: 12/20/2023] Open
Abstract
Introduction Eukaryotic life depends on the functional elements encoded by both the nuclear genome and organellar genomes, such as those contained within the mitochondria. The content, size, and structure of the mitochondrial genome varies across organisms with potentially large implications for phenotypic variance and resulting evolutionary trajectories. Among yeasts in the subphylum Saccharomycotina, extensive differences have been observed in various species relative to the model yeast Saccharomyces cerevisiae, but mitochondrial genome sampling across many groups has been scarce, even as hundreds of nuclear genomes have become available. Methods By extracting mitochondrial assemblies from existing short-read genome sequence datasets, we have greatly expanded both the number of available genomes and the coverage across sparsely sampled clades. Results Comparison of 353 yeast mitochondrial genomes revealed that, while size and GC content were fairly consistent across species, those in the genera Metschnikowia and Saccharomyces trended larger, while several species in the order Saccharomycetales, which includes S. cerevisiae, exhibited lower GC content. Extreme examples for both size and GC content were scattered throughout the subphylum. All mitochondrial genomes shared a core set of protein-coding genes for Complexes III, IV, and V, but they varied in the presence or absence of mitochondrially-encoded canonical Complex I genes. We traced the loss of Complex I genes to a major event in the ancestor of the orders Saccharomycetales and Saccharomycodales, but we also observed several independent losses in the orders Phaffomycetales, Pichiales, and Dipodascales. In contrast to prior hypotheses based on smaller-scale datasets, comparison of evolutionary rates in protein-coding genes showed no bias towards elevated rates among aerobically fermenting (Crabtree/Warburg-positive) yeasts. Mitochondrial introns were widely distributed, but they were highly enriched in some groups. The majority of mitochondrial introns were poorly conserved within groups, but several were shared within groups, between groups, and even across taxonomic orders, which is consistent with horizontal gene transfer, likely involving homing endonucleases acting as selfish elements. Discussion As the number of available fungal nuclear genomes continues to expand, the methods described here to retrieve mitochondrial genome sequences from these datasets will prove invaluable to ensuring that studies of fungal mitochondrial genomes keep pace with their nuclear counterparts.
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Affiliation(s)
- John F. Wolters
- Laboratory of Genetics, DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, Center for Genomic Science Innovation, J. F. Crow Institute for the Study of Evolution, University of Wisconsin-Madison, Madison, WI, United States
| | - Abigail L. LaBella
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, United States
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, United States
| | - Dana A. Opulente
- Laboratory of Genetics, DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, Center for Genomic Science Innovation, J. F. Crow Institute for the Study of Evolution, University of Wisconsin-Madison, Madison, WI, United States
- Biology Department, Villanova University, Villanova, PA, United States
| | - Antonis Rokas
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, United States
| | - Chris Todd Hittinger
- Laboratory of Genetics, DOE Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, Center for Genomic Science Innovation, J. F. Crow Institute for the Study of Evolution, University of Wisconsin-Madison, Madison, WI, United States
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2
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Peris D, Ubbelohde EJ, Kuang MC, Kominek J, Langdon QK, Adams M, Koshalek JA, Hulfachor AB, Opulente DA, Hall DJ, Hyma K, Fay JC, Leducq JB, Charron G, Landry CR, Libkind D, Gonçalves C, Gonçalves P, Sampaio JP, Wang QM, Bai FY, Wrobel RL, Hittinger CT. Macroevolutionary diversity of traits and genomes in the model yeast genus Saccharomyces. Nat Commun 2023; 14:690. [PMID: 36755033 PMCID: PMC9908912 DOI: 10.1038/s41467-023-36139-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 01/17/2023] [Indexed: 02/10/2023] Open
Abstract
Species is the fundamental unit to quantify biodiversity. In recent years, the model yeast Saccharomyces cerevisiae has seen an increased number of studies related to its geographical distribution, population structure, and phenotypic diversity. However, seven additional species from the same genus have been less thoroughly studied, which has limited our understanding of the macroevolutionary events leading to the diversification of this genus over the last 20 million years. Here, we show the geographies, hosts, substrates, and phylogenetic relationships for approximately 1,800 Saccharomyces strains, covering the complete genus with unprecedented breadth and depth. We generated and analyzed complete genome sequences of 163 strains and phenotyped 128 phylogenetically diverse strains. This dataset provides insights about genetic and phenotypic diversity within and between species and populations, quantifies reticulation and incomplete lineage sorting, and demonstrates how gene flow and selection have affected traits, such as galactose metabolism. These findings elevate the genus Saccharomyces as a model to understand biodiversity and evolution in microbial eukaryotes.
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Grants
- R01 GM080669 NIGMS NIH HHS
- T32 GM007133 NIGMS NIH HHS
- We thank the University of Wisconsin Biotechnology Center DNA Sequencing Facility for providing Illumina and Sanger sequencing facilities and services; Maria Sardi, Audrey Gasch, and Ursula Bond for providing strains; Sean McIlwain for providing guidance for genome ultra-scaffolding; Yury V. Bukhman for discussing applications of the Growth Curve Analysis Tool (GCAT); Mick McGee for HPLC analysis; Raúl Ortíz-Merino for assistance during YGAP annotations; Jessica Leigh for assistance with PopART; Cecile Ané for suggestions about BUCKy utilization and phylogenetic network analyses; Samina Naseeb and Daniela Delneri for sharing preliminary multi-locus Saccharomyces jurei data; and Branden Timm, Brian Kyle, and Dan Metzger for computational assistance. Some computations were performed on Tirant III of the Spanish Supercomputing Network (‘‘Servei d’Informàtica de la Universitat de València”) under the project BCV-2021-1-0001 granted to DP, while others were performed at the Wisconsin Energy Institute and the Center for High-Throughput Computing of the University of Wisconsin-Madison. During a portion of this project, DP was a researcher funded by the European Union’s Horizon 2020 research and innovation programme Marie Sklodowska-Curie, grant agreement No. 747775, the Research Council of Norway (RCN) grant Nos. RCN 324253 and 274337, and the Generalitat Valenciana plan GenT grant No. CIDEGENT/2021/039. DP is a recipient of an Illumina Grant for Illumina Sequencing Saccharomyces strains in this study. QKL was supported by the National Science Foundation under Grant No. DGE-1256259 (Graduate Research Fellowship) and the Predoctoral Training Program in Genetics, funded by the National Institutes of Health (5T32GM007133). This material is based upon work supported in part by the Great Lakes Bioenergy Research Center, Office of Science, Office of Biological and Environmental Research under Award Numbers DE-SC0018409 and DE-FC02-07ER64494; the National Science Foundation under Grant Nos. DEB-1253634, DEB-1442148, and DEB-2110403; and the USDA National Institute of Food and Agriculture Hatch Project Number 1020204. C.T.H. is an H. I. Romnes Faculty Fellow, supported by the Office of the Vice Chancellor for Research and Graduate Education with funding from Wisconsin Alumni Research Foundation. QMW was supported by the National Natural Science Foundation of China (NSFC) under Grant Nos. 31770018 and 31961133020. CRL holds the Canada Research Chair in Cellular Systems and Synthetic Biology, and his research on wild yeast is supported by a NSERC Discovery Grant.
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Affiliation(s)
- David Peris
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA.
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA.
- Section for Genetics and Evolutionary Biology, Department of Biosciences, University of Oslo, Oslo, Norway.
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA), CSIC, Valencia, Spain.
| | - Emily J Ubbelohde
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Meihua Christina Kuang
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
| | - Jacek Kominek
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Quinn K Langdon
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
| | - Marie Adams
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Justin A Koshalek
- Biotechnology Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Amanda Beth Hulfachor
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Dana A Opulente
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Katie Hyma
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Justin C Fay
- Department of Biology, University of Rochester, Rochester, NY, USA
| | - Jean-Baptiste Leducq
- Departement des Sciences Biologiques, Université de Montréal, Montreal, QC, Canada
- Département de Biologie, PROTEO, Pavillon Charles‑Eugène‑Marchand, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, QC, Canada
| | - Guillaume Charron
- Canada Natural Resources, Laurentian Forestry Centre, Quebec City, QC, Canada
| | - Christian R Landry
- Département de Biologie, PROTEO, Pavillon Charles‑Eugène‑Marchand, Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Quebec City, QC, Canada
| | - Diego Libkind
- Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC), Consejo Nacional de Investigaciones, Científicas y Técnicas (CONICET)-Universidad Nacional del Comahue, Bariloche, Argentina
| | - Carla Gonçalves
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Caparica, Portugal
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
- Vanderbilt University, Department of Biological Sciences, Nashville, TN, USA
- Evolutionary Studies Initiative, Vanderbilt University, Nashville, TN, USA
| | - Paula Gonçalves
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - José Paulo Sampaio
- UCIBIO-i4HB, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | - Qi-Ming Wang
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- School of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, China
| | - Feng-Yan Bai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Russel L Wrobel
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA
| | - Chris Todd Hittinger
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Wisconsin Energy Institute, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, USA.
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, USA.
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3
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Sharbrough J, Bankers L, Cook E, Fields PD, Jalinsky J, McElroy KE, Neiman M, Logsdon JM, Boore JL. Single-molecule Sequencing of an Animal Mitochondrial Genome Reveals Chloroplast-like Architecture and Repeat-mediated Recombination. Mol Biol Evol 2023; 40:6980790. [PMID: 36625177 PMCID: PMC9874032 DOI: 10.1093/molbev/msad007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/28/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023] Open
Abstract
Recent advances in long-read sequencing technology have allowed for single-molecule sequencing of entire mitochondrial genomes, opening the door for direct investigation of the mitochondrial genome architecture and recombination. We used PacBio sequencing to reassemble mitochondrial genomes from two species of New Zealand freshwater snails, Potamopyrgus antipodarum and Potamopyrgus estuarinus. These assemblies revealed a ∼1.7 kb structure within the mitochondrial genomes of both species that was previously undetected by an assembly of short reads and likely corresponding to a large noncoding region commonly present in the mitochondrial genomes. The overall architecture of these Potamopyrgus mitochondrial genomes is reminiscent of the chloroplast genomes of land plants, harboring a large single-copy (LSC) region and a small single-copy (SSC) region separated by a pair of inverted repeats (IRa and IRb). Individual sequencing reads that spanned across the Potamopyrgus IRa-SSC-IRb structure revealed the occurrence of a "flip-flop" recombination. We also detected evidence for two distinct IR haplotypes and recombination between them in wild-caught P. estuarinus, as well as extensive intermolecular recombination between single-nucleotide polymorphisms in the LSC region. The chloroplast-like architecture and repeat-mediated mitochondrial recombination we describe here raise fundamental questions regarding the origins and commonness of inverted repeats in cytoplasmic genomes and their role in mitochondrial genome evolution.
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Affiliation(s)
| | - Laura Bankers
- Department of Biology, University of Iowa, Iowa City, IA
| | - Emily Cook
- Department of Biology, New Mexico Institute of Mining and Technology, Socorro, NM 87801
| | - Peter D Fields
- Zoologisches Institut, University of Basel, Basel, Switzerland
| | | | - Kyle E McElroy
- Department of Biology, University of Iowa, Iowa City, IA,Department of Ecology, Evolution, and Organismal Biology, Iowa State University, IA
| | - Maurine Neiman
- Department of Biology, University of Iowa, Iowa City, IA
| | - John M Logsdon
- Department of Biology, University of Iowa, Iowa City, IA
| | - Jeffrey L Boore
- Phenome Health and Institute for Systems Biology, Seattle, WA
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4
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Zhong C, Jin J, Zhou R, Liu H, Xie J, Wan D, Xiao S, Zhang S. Comparative analysis of the complete mitochondrial genomes of four cordyceps fungi. Ecol Evol 2022; 12:e8818. [PMID: 35494498 PMCID: PMC9036042 DOI: 10.1002/ece3.8818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/22/2022] [Accepted: 03/28/2022] [Indexed: 11/23/2022] Open
Abstract
Cordyceps is a large group of entomogenous, medicinally important fungi. In this study, we sequenced, assembled, and annotated the entire mitochondrial genome of Ophiocordyceps xuefengensis, in addition to comparing it against other three complete cordyceps mitogenomes that were previously published. Comparative analysis indicated that the four complete mitogenomes are all composed of circular DNA molecules, although their sizes significantly differ due to high variability in intron and intergenic region sizes in the Ophiocordyceps sinensis and O. xuefengensis mitogenomes. All mitogenomes contain 14 conserved genes and two ribosomal RNA genes, but varying numbers of tRNA introns. The Ka/Ks ratios for all 14 PCGs and rps3 were all less than 1, indicating that these genes have been subject to purifying selection. Phylogenetic analysis was conducted using concatenated amino acid and nucleotide sequences of the 14 PCGs and rps3 using two different methods (Maximum Likelihood and Bayesian analysis), revealing highly supported relationships between O. xuefengensis and other Ophiocordyceps species, in addition to a close relationship with O. sinensis. Further, the analyses indicated that cox1 and rps3 play important roles in population differentiation. These mitogenomes will allow further study of the population genetics, taxonomy, and evolutionary biology of medicinally important cordyceps species.
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Affiliation(s)
- Can Zhong
- Horticulture and Landscape College Hunan Agricultural University Changsha China.,Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
| | - Jian Jin
- Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
| | - Rongrong Zhou
- Changchun University of Chinese Medicine Changchun China
| | - Hao Liu
- Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
| | - Jing Xie
- Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
| | - Dan Wan
- Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
| | - Shengen Xiao
- Horticulture and Landscape College Hunan Agricultural University Changsha China
| | - Shuihan Zhang
- Horticulture and Landscape College Hunan Agricultural University Changsha China.,Institute of Chinese Materia Medica Hunan Academy of Chinese Medicine Changsha China
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5
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Hao W. From Genome Variation to Molecular Mechanisms: What we Have Learned From Yeast Mitochondrial Genomes? Front Microbiol 2022; 13:806575. [PMID: 35126340 PMCID: PMC8811140 DOI: 10.3389/fmicb.2022.806575] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/03/2022] [Indexed: 11/26/2022] Open
Abstract
Analysis of genome variation provides insights into mechanisms in genome evolution. This is increasingly appreciated with the rapid growth of genomic data. Mitochondrial genomes (mitogenomes) are well known to vary substantially in many genomic aspects, such as genome size, sequence context, nucleotide base composition and substitution rate. Such substantial variation makes mitogenomes an excellent model system to study the mechanisms dictating mitogenome variation. Recent sequencing efforts have not only covered a rich number of yeast species but also generated genomes from abundant strains within the same species. The rich yeast genomic data have enabled detailed investigation from genome variation into molecular mechanisms in genome evolution. This mini-review highlights some recent progresses in yeast mitogenome studies.
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6
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Hénault M, Marsit S, Charron G, Landry CR. Hybridization drives mitochondrial DNA degeneration and metabolic shift in a species with biparental mitochondrial inheritance. Genome Res 2022; 32:2043-2056. [PMID: 36351770 PMCID: PMC9808621 DOI: 10.1101/gr.276885.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
Abstract
Mitochondrial DNA (mtDNA) is a cytoplasmic genome that is essential for respiratory metabolism. Although uniparental mtDNA inheritance is most common in animals and plants, distinct mtDNA haplotypes can coexist in a state of heteroplasmy, either because of paternal leakage or de novo mutations. mtDNA integrity and the resolution of heteroplasmy have important implications, notably for mitochondrial genetic disorders, speciation, and genome evolution in hybrids. However, the impact of genetic variation on the transition to homoplasmy from initially heteroplasmic backgrounds remains largely unknown. Here, we use Saccharomyces yeasts, fungi with constitutive biparental mtDNA inheritance, to investigate the resolution of mtDNA heteroplasmy in a variety of hybrid genotypes. We previously designed 11 crosses along a gradient of parental evolutionary divergence using undomesticated isolates of Saccharomyces paradoxus and Saccharomyces cerevisiae Each cross was independently replicated 48 to 96 times, and the resulting 864 hybrids were evolved under relaxed selection for mitochondrial function. Genome sequencing of 446 MA lines revealed extensive mtDNA recombination, but the recombination rate was not predicted by parental divergence level. We found a strong positive relationship between parental divergence and the rate of large-scale mtDNA deletions, which led to the loss of respiratory metabolism. We also uncovered associations between mtDNA recombination, mtDNA deletion, and genome instability that were genotype specific. Our results show that hybridization in yeast induces mtDNA degeneration through large-scale deletion and loss of function, with deep consequences for mtDNA evolution, metabolism, and the emergence of reproductive isolation.
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Affiliation(s)
- Mathieu Hénault
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, Québec, G1V 0A6, Canada;,Département de Biochimie, Microbiologie et Bioinformatique, Université Laval, Québec, Québec, G1V 0A6, Canada;,Quebec Network for Research on Protein Function, Engineering, and Applications (PROTEO), Université Laval, Québec, Québec, G1V 0A6, Canada;,Université Laval Big Data Research Center (BDRC_UL), Québec, Québec, G1V 0A6, Canada
| | - Souhir Marsit
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, Québec, G1V 0A6, Canada;,Département de Biochimie, Microbiologie et Bioinformatique, Université Laval, Québec, Québec, G1V 0A6, Canada;,Quebec Network for Research on Protein Function, Engineering, and Applications (PROTEO), Université Laval, Québec, Québec, G1V 0A6, Canada;,Université Laval Big Data Research Center (BDRC_UL), Québec, Québec, G1V 0A6, Canada;,Département de Biologie, Université Laval, Québec, Québec, G1V 0A6, Canada
| | - Guillaume Charron
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, Québec, G1V 0A6, Canada;,Quebec Network for Research on Protein Function, Engineering, and Applications (PROTEO), Université Laval, Québec, Québec, G1V 0A6, Canada;,Université Laval Big Data Research Center (BDRC_UL), Québec, Québec, G1V 0A6, Canada;,Département de Biologie, Université Laval, Québec, Québec, G1V 0A6, Canada
| | - Christian R. Landry
- Institut de Biologie Intégrative et des Systèmes (IBIS), Université Laval, Québec, Québec, G1V 0A6, Canada;,Département de Biochimie, Microbiologie et Bioinformatique, Université Laval, Québec, Québec, G1V 0A6, Canada;,Quebec Network for Research on Protein Function, Engineering, and Applications (PROTEO), Université Laval, Québec, Québec, G1V 0A6, Canada;,Université Laval Big Data Research Center (BDRC_UL), Québec, Québec, G1V 0A6, Canada;,Département de Biologie, Université Laval, Québec, Québec, G1V 0A6, Canada
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7
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Megarioti AH, Kouvelis VN. The Coevolution of Fungal Mitochondrial Introns and Their Homing Endonucleases (GIY-YIG and LAGLIDADG). Genome Biol Evol 2021; 12:1337-1354. [PMID: 32585032 PMCID: PMC7487136 DOI: 10.1093/gbe/evaa126] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2020] [Indexed: 12/21/2022] Open
Abstract
Fungal mitochondrial (mt) genomes exhibit great diversity in size which is partially attributed to their variable intergenic regions and most importantly to the inclusion of introns within their genes. These introns belong to group I or II, and both of them are self-splicing. The majority of them carry genes encoding homing endonucleases, either LAGLIDADG or GIY-YIG. In this study, it was found that these intronic homing endonucleases genes (HEGs) may originate from mt free-standing open reading frames which can be found nowadays in species belonging to Early Diverging Fungi as “living fossils.” A total of 487 introns carrying HEGs which were located in the publicly available mt genomes of representative species belonging to orders from all fungal phyla was analyzed. Their distribution in the mt genes, their insertion target sequence, and the phylogenetic analyses of the HEGs showed that these introns along with their HEGs form a composite structure in which both selfish elements coevolved. The invasion of the ancestral free-standing HEGs in the introns occurred through a perpetual mechanism, called in this study as “aenaon” hypothesis. It is based on recombination, transpositions, and horizontal gene transfer events throughout evolution. HEGs phylogenetically clustered primarily according to their intron hosts and secondarily to the mt genes carrying the introns and their HEGs. The evolutionary models created revealed an “intron-early” evolution which was enriched by “intron-late” events through many different independent recombinational events which resulted from both vertical and horizontal gene transfers.
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Affiliation(s)
- Amalia H Megarioti
- Department of Genetics and Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Greece
| | - Vassili N Kouvelis
- Department of Genetics and Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Greece
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8
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Bágeľová Poláková S, Lichtner Ž, Szemes T, Smolejová M, Sulo P. Mitochondrial DNA duplication, recombination, and introgression during interspecific hybridization. Sci Rep 2021; 11:12726. [PMID: 34135414 PMCID: PMC8209160 DOI: 10.1038/s41598-021-92125-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 06/03/2021] [Indexed: 02/05/2023] Open
Abstract
mtDNA recombination events in yeasts are known, but altered mitochondrial genomes were not completed. Therefore, we analyzed recombined mtDNAs in six Saccharomyces cerevisiae × Saccharomyces paradoxus hybrids in detail. Assembled molecules contain mostly segments with variable length introgressed to other mtDNA. All recombination sites are in the vicinity of the mobile elements, introns in cox1, cob genes and free standing ORF1, ORF4. The transplaced regions involve co-converted proximal exon regions. Thus, these selfish elements are beneficial to the host if the mother molecule is challenged with another molecule for transmission to the progeny. They trigger mtDNA recombination ensuring the transfer of adjacent regions, into the progeny of recombinant molecules. The recombination of the large segments may result in mitotically stable duplication of several genes.
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Affiliation(s)
- Silvia Bágeľová Poláková
- grid.7634.60000000109409708Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, Bratislava, 842 15 Slovakia ,grid.419303.c0000 0001 2180 9405Present Address: Department of Membrane Biochemistry, Centre of Biosciences, Slovak Academy of Sciences, Bratislava, 84005 Slovakia
| | - Žaneta Lichtner
- grid.7634.60000000109409708Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, Bratislava, 842 15 Slovakia
| | - Tomáš Szemes
- grid.7634.60000000109409708Comenius University Science Park, Bratislava, 841 04 Slovakia ,grid.7634.60000000109409708Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, 842 15 Slovakia ,Geneton s.r.o., Galvaniho 7, Bratislava, 821 04 Slovakia
| | - Martina Smolejová
- grid.7634.60000000109409708Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, Bratislava, 842 15 Slovakia
| | - Pavol Sulo
- grid.7634.60000000109409708Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, Bratislava, 842 15 Slovakia
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9
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Yu X, Jiang W, Tan W, Zhang X, Tian X. Deciphering the organelle genomes and transcriptomes of a common ornamental plant Ligustrum quihoui reveals multiple fragments of transposable elements in the mitogenome. Int J Biol Macromol 2020; 165:1988-1999. [PMID: 33091470 DOI: 10.1016/j.ijbiomac.2020.10.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 01/10/2023]
Abstract
Ligustrum quihoui (L. quihoui) is an important hedge material for landscaping and also possesses medicinal value. To generate genomic resources for better understanding the evolutionary history of this important plant, the organelle genomes of L. quihoui are de novo assembled and functionally annotated. Compared with other Oleaceae species, the 163,069 bp chloroplast genome of L. quihoui exhibits a typical quadripartite structure with highly conserved gene content and gene order, while the 848,451 bp mitochondrial genome of L. quihoui exhibits highly divergent genome size and gene content. Codon usage analyses show that genes related with photosynthesis and mitochondrial respiratory chain show inconsistent codon biases. A total of 48,760 bp transposable elements (TEs) fragments and 41,887 bp chloroplast-like sequences are found in the L. quihoui mitochondrial genome. A striking discrepancy of RNA editing between the two organelle genomes is found in L. quihoui, in which 146 mitochondrial editing sites coexist with only 43 such sites in chloroplast. Based on DNA and RNA-Seq data, we propose that GTG may act as the start codon of mitochondrial rpl16 in Oleaceae species. Phylogenetic analysis based on chloroplast genome shows that L. quihoui and L. japonicum form a sister clade within the genus Ligustrum.
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Affiliation(s)
- Xiaolei Yu
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Weiling Jiang
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wei Tan
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoying Zhang
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoxuan Tian
- State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
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10
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Nguyen DT, Wu B, Xiao S, Hao W. Evolution of a Record-Setting AT-Rich Genome: Indel Mutation, Recombination, and Substitution Bias. Genome Biol Evol 2020; 12:2344-2354. [PMID: 32986811 PMCID: PMC7846184 DOI: 10.1093/gbe/evaa202] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2020] [Indexed: 12/16/2022] Open
Abstract
Genome-wide nucleotide composition varies widely among species. Despite extensive research, the source of genome-wide nucleotide composition diversity remains elusive. Yeast mitochondrial genomes (mitogenomes) are highly A + T rich, and they provide a unique opportunity to study the evolution of AT-biased landscape. In this study, we sequenced ten complete mitogenomes of the Saccharomycodes ludwigii yeast with 8% G + C content, the lowest genome-wide %(G + C) in all published genomes to date. The S. ludwigii mitogenomes have high densities of short tandem repeats but severely underrepresented mononucleotide repeats. Comparative population genomics of these record-setting A + T-rich genomes shows dynamic indel mutations and strong mutation bias toward A/T. Indel mutations play a greater role in genomic variation among very closely related strains than nucleotide substitutions. Indels have resulted in presence–absence polymorphism of tRNAArg (ACG) among S. ludwigii mitogenomes. Interestingly, these mitogenomes have undergone recombination, a genetic process that can increase G + C content by GC-biased gene conversion. Finally, the expected equilibrium G + C content under mutation pressure alone is higher than observed G + C content, suggesting existence of mechanisms other than AT-biased mutation operating to increase A/T. Together, our findings shed new lights on mechanisms driving extremely AT-rich genomes.
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Affiliation(s)
- Duong T Nguyen
- Department of Biological Sciences, Wayne State University
| | - Baojun Wu
- Department of Biological Sciences, Wayne State University
| | - Shujie Xiao
- Department of Biological Sciences, Wayne State University
| | - Weilong Hao
- Department of Biological Sciences, Wayne State University
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11
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Medina R, Franco MEE, Bartel LC, Martinez Alcántara V, Saparrat MCN, Balatti PA. Fungal Mitogenomes: Relevant Features to Planning Plant Disease Management. Front Microbiol 2020; 11:978. [PMID: 32547508 PMCID: PMC7272585 DOI: 10.3389/fmicb.2020.00978] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/23/2020] [Indexed: 01/18/2023] Open
Abstract
Mitochondrial genomes (mt-genomes) are characterized by a distinct codon usage and their autonomous replication. Mt-genomes encode highly conserved genes (mt-genes), like proteins involved in electron transport and oxidative phosphorylation but they also carry highly variable regions that are in part responsible for their high plasticity. The degree of conservation of their genes is such that they allow the establishment of phylogenetic relationships even across distantly related species. Here, we describe the mechanisms that generate changes along mt-genomes, which play key roles at enlarging the ability of fungi to adapt to changing environments. Within mt-genomes of fungal pathogens, there are dispensable as well as indispensable genes for survival, virulence and/or pathogenicity. We also describe the different complexes or mechanisms targeted by fungicides, thus addressing a relevant issue regarding disease management. Despite the controversial origin and evolution of fungal mt-genomes, the intrinsic mechanisms and molecular biology involved in their evolution will help to understand, at the molecular level, the strategies for fungal disease management.
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Affiliation(s)
- Rocio Medina
- Centro de Investigaciones de Fitopatología, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIDEFI-CICPBA), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | | | - Laura Cecilia Bartel
- Centro de Investigaciones de Fitopatología, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIDEFI-CICPBA), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | - Virginia Martinez Alcántara
- Cátedra de Microbiología Agrícola, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | - Mario Carlos Nazareno Saparrat
- Cátedra de Microbiología Agrícola, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina.,Instituto de Fisiología Vegetal (INFIVE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de La Plata, La Plata, Argentina
| | - Pedro Alberto Balatti
- Centro de Investigaciones de Fitopatología, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIDEFI-CICPBA), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
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12
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Szabó A, Antunovics Z, Karanyicz E, Sipiczki M. Diversity and Postzygotic Evolution of the Mitochondrial Genome in Hybrids of Saccharomyces Species Isolated by Double Sterility Barrier. Front Microbiol 2020; 11:838. [PMID: 32457720 PMCID: PMC7221252 DOI: 10.3389/fmicb.2020.00838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 04/07/2020] [Indexed: 12/05/2022] Open
Abstract
Eukaryotic species are reproductively isolated by sterility barriers that prevent interspecies fertilization (prezygotic sterility barrier) or the fertilization results in infertile offspring (postzygotic sterility barrier). The Saccharomyces species are isolated by postzygotic sterility barriers. Their allodiploid hybrids form no viable gametes (ascospores) and the viable ascospores of the allotetraploids cannot fertilize (conjugate). Our previous work revealed that this mechanism of reproductive isolation differs from those operating in plants and animals and we designated it double sterility barrier (the failure of homeologous chromosomes to pair and the repression of mating by mating-type heterozygosity). Other studies implicated nucleo-mitochondrial incompatibilities in the sterility of the Saccharomyces hybrids, a mechanism assumed to play a central role in the reproductive isolation of animal species. In this project the mitochondrial genomes of 50 cevarum (S. cerevisiae × S. uvarum) hybrids were analyzed. 62% had S. cerevisiae mitotypes, 4% had S. uvarum mitotypes, and 34% had recombinant mitotypes. All but one hybrid formed viable spores indicating that they had genomes larger than allodiploid. Most of these spores were sterile (no sporulation in the clone of vegetative descendants; a feature characteristic of allodiploids). But regardless of their mitotypes, most hybrids could also form fertile alloaneuploid spore clones at low frequencies upon the loss of the MAT-carrying chromosome of the S. uvarum subgenome during meiosis. Hence, the cevarum alloploid nuclear genome is compatible with both parental mitochondrial genomes as well as with their recombinants, and the sterility of the hybrids is maintained by the double sterility barrier (determined in the nuclear genome) rather than by nucleo-mitochondrial incompatibilities. During allotetraploid sporulation both the nuclear and the mitochondrial genomes of the hybrids could segregate but no correlation was observed between the sterility or the fertility of the spore clones and their mitotypes. Nucleo-mitochondrial incompatibility was manifested as respiration deficiency in certain meiotic segregants. As respiration is required for meiosis-sporulation but not for fertilization (conjugation), these segregants were deficient only in sporulation. Thus, the nucleo-mitochondrial incompatibility affects the sexual processes only indirectly through the inactivation of respiration and causes only partial sterility in certain segregant spore clones.
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Affiliation(s)
| | | | | | - Matthias Sipiczki
- Department of Genetics and Applied Microbiology, University of Debrecen, Debrecen, Hungary
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13
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Lee HH, Ke HM, Lin CYI, Lee TJ, Chung CL, Tsai IJ. Evidence of Extensive Intraspecific Noncoding Reshuffling in a 169-kb Mitochondrial Genome of a Basidiomycetous Fungus. Genome Biol Evol 2020; 11:2774-2788. [PMID: 31418013 PMCID: PMC6786477 DOI: 10.1093/gbe/evz181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2019] [Indexed: 12/19/2022] Open
Abstract
Comparative genomics of fungal mitochondrial genomes (mitogenomes) have revealed a remarkable pattern of rearrangement between and within major phyla owing to horizontal gene transfer and recombination. The role of recombination was exemplified at a finer evolutionary time scale in basidiomycetes group of fungi as they display a diversity of mitochondrial DNA inheritance patterns. Here, we assembled mitogenomes of six species from the Hymenochaetales order of basidiomycetes and examined 59 mitogenomes from 2 genetic lineages of Phellinus noxius. Gene order is largely collinear, while intergene regions are major determinants of mitogenome size variation. Substantial sequence divergence was found in shared introns consistent with high horizontal gene transfer frequency observed in yeasts, but we also identified a rare case where an intron was retained in five species since speciation. In contrast to the hyperdiversity observed in nuclear genomes of Phellinus noxius, mitogenomes’ intraspecific polymorphisms at protein-coding sequences are extremely low. Phylogeny network based on introns revealed turnover as well as exchange of introns between two lineages. Strikingly, some strains harbor a mosaic origin of introns from both lineages. Analysis of intergenic sequence indicated substantial differences between and within lineages, and an expansion may be ongoing as a result of exchange between distal intergenes. These findings suggest that the evolution in mitochondrial DNAs is usually lineage specific but chimeric mitotypes are frequently observed, thus capturing the possible evolutionary processes shaping mitogenomes in a basidiomycete. The large mitogenome sizes reported in various basidiomycetes appear to be a result of interspecific reshuffling of intergenes.
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Affiliation(s)
- Hsin-Han Lee
- Biodiversity Research Center, Academia Sinica, Taipei City, Taiwan
| | - Huei-Mien Ke
- Biodiversity Research Center, Academia Sinica, Taipei City, Taiwan
| | - Chan-Yi Ivy Lin
- Biodiversity Research Center, Academia Sinica, Taipei City, Taiwan
| | - Tracy J Lee
- Biodiversity Research Center, Academia Sinica, Taipei City, Taiwan.,Biodiversity Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan Normal University, Taipei City, Taiwan.,Department of Life Science, National Taiwan Normal University, Taipei City, Taiwan
| | - Chia-Lin Chung
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei City, Taiwan
| | - Isheng J Tsai
- Biodiversity Research Center, Academia Sinica, Taipei City, Taiwan
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14
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Tao YT, Suo F, Tusso S, Wang YK, Huang S, Wolf JBW, Du LL. Intraspecific Diversity of Fission Yeast Mitochondrial Genomes. Genome Biol Evol 2020; 11:2312-2329. [PMID: 31364709 PMCID: PMC6736045 DOI: 10.1093/gbe/evz165] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2019] [Indexed: 02/07/2023] Open
Abstract
The fission yeast Schizosaccharomyces pombe is an important model organism, but its natural diversity and evolutionary history remain under-studied. In particular, the population genomics of the S. pombe mitochondrial genome (mitogenome) has not been thoroughly investigated. Here, we assembled the complete circular-mapping mitogenomes of 192 S. pombe isolates de novo, and found that these mitogenomes belong to 69 nonidentical sequence types ranging from 17,618 to 26,910 bp in length. Using the assembled mitogenomes, we identified 20 errors in the reference mitogenome and discovered two previously unknown mitochondrial introns. Analyzing sequence diversity of these 69 types of mitogenomes revealed two highly distinct clades, with only three mitogenomes exhibiting signs of inter-clade recombination. This diversity pattern suggests that currently available S. pombe isolates descend from two long-separated ancestral lineages. This conclusion is corroborated by the diversity pattern of the recombination-repressed K-region located between donor mating-type loci mat2 and mat3 in the nuclear genome. We estimated that the two ancestral S. pombe lineages diverged about 31 million generations ago. These findings shed new light on the evolution of S. pombe and the data sets generated in this study will facilitate future research on genome evolution.
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Affiliation(s)
- Yu-Tian Tao
- National Institute of Biological Sciences, Beijing, China.,Graduate School of Peking Union Medical College, Beijing, China
| | - Fang Suo
- National Institute of Biological Sciences, Beijing, China
| | - Sergio Tusso
- Division of Evolutionary Biology, Faculty of Biology, LMU Munich, Planegg-Martinsried, Germany.,Science for Life Laboratories, Department of Evolutionary Biology, Uppsala University, Sweden
| | - Yan-Kai Wang
- National Institute of Biological Sciences, Beijing, China
| | - Song Huang
- National Institute of Biological Sciences, Beijing, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
| | - Jochen B W Wolf
- Division of Evolutionary Biology, Faculty of Biology, LMU Munich, Planegg-Martinsried, Germany.,Science for Life Laboratories, Department of Evolutionary Biology, Uppsala University, Sweden
| | - Li-Lin Du
- National Institute of Biological Sciences, Beijing, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
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15
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Libkind D, Peris D, Cubillos FA, Steenwyk JL, Opulente DA, Langdon QK, Rokas A, Hittinger CT. Into the wild: new yeast genomes from natural environments and new tools for their analysis. FEMS Yeast Res 2020; 20:foaa008. [PMID: 32009143 PMCID: PMC7067299 DOI: 10.1093/femsyr/foaa008] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 01/31/2020] [Indexed: 12/16/2022] Open
Abstract
Genomic studies of yeasts from the wild have increased considerably in the past few years. This revolution has been fueled by advances in high-throughput sequencing technologies and a better understanding of yeast ecology and phylogeography, especially for biotechnologically important species. The present review aims to first introduce new bioinformatic tools available for the generation and analysis of yeast genomes. We also assess the accumulated genomic data of wild isolates of industrially relevant species, such as Saccharomyces spp., which provide unique opportunities to further investigate the domestication processes associated with the fermentation industry and opportunistic pathogenesis. The availability of genome sequences of other less conventional yeasts obtained from the wild has also increased substantially, including representatives of the phyla Ascomycota (e.g. Hanseniaspora) and Basidiomycota (e.g. Phaffia). Here, we review salient examples of both fundamental and applied research that demonstrate the importance of continuing to sequence and analyze genomes of wild yeasts.
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Affiliation(s)
- D Libkind
- Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC) – CONICET/Universidad Nacional del Comahue, Quintral 1250 (8400), Bariloche., Argentina
| | - D Peris
- Department of Food Biotechnology, Institute of Agrochemistry and Food Technology-CSIC, Calle Catedrático Dr. D. Agustin Escardino Benlloch n°7, 46980 Paterna, Valencia, Spain
| | - F A Cubillos
- Millennium Institute for Integrative Biology (iBio). General del Canto 51 (7500574), Santiago
- Universidad de Santiago de Chile, Facultad de Química y Biología, Departamento de Biología. Alameda 3363 (9170002). Estación Central. Santiago, Chile
| | - J L Steenwyk
- Department of Biological Sciences, VU Station B#35-1634, Vanderbilt University, Nashville, TN 37235, USA
| | - D A Opulente
- Laboratory of Genetics, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, Center for Genomic Science Innovation, University of Wisconsin-Madison, 1552 University Avenue, Madison, WI 53726-4084, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, 1552 University Avenue, Madison, I 53726-4084, Madison, WI, USA
| | - Q K Langdon
- Laboratory of Genetics, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, Center for Genomic Science Innovation, University of Wisconsin-Madison, 1552 University Avenue, Madison, WI 53726-4084, USA
| | - A Rokas
- Department of Biological Sciences, VU Station B#35-1634, Vanderbilt University, Nashville, TN 37235, USA
| | - C T Hittinger
- Laboratory of Genetics, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, Center for Genomic Science Innovation, University of Wisconsin-Madison, 1552 University Avenue, Madison, WI 53726-4084, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, 1552 University Avenue, Madison, I 53726-4084, Madison, WI, USA
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16
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Dujon B. Mitochondrial genetics revisited. Yeast 2020; 37:191-205. [DOI: 10.1002/yea.3445] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 10/05/2019] [Accepted: 10/08/2019] [Indexed: 12/17/2022] Open
Affiliation(s)
- Bernard Dujon
- Department Genomes and GeneticsInstitut Pasteur Paris France
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17
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Wu B, Hao W. Mitochondrial‐encoded endonucleases drive recombination of protein‐coding genes in yeast. Environ Microbiol 2019; 21:4233-4240. [DOI: 10.1111/1462-2920.14783] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/18/2019] [Indexed: 01/15/2023]
Affiliation(s)
- Baojun Wu
- Department of Biological Sciences Wayne State University Detroit MI USA
| | - Weilong Hao
- Department of Biological Sciences Wayne State University Detroit MI USA
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18
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Langdon QK, Peris D, Kyle B, Hittinger CT. sppIDer: A Species Identification Tool to Investigate Hybrid Genomes with High-Throughput Sequencing. Mol Biol Evol 2019; 35:2835-2849. [PMID: 30184140 PMCID: PMC6231485 DOI: 10.1093/molbev/msy166] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The genomics era has expanded our knowledge about the diversity of the living world, yet harnessing high-throughput sequencing data to investigate alternative evolutionary trajectories, such as hybridization, is still challenging. Here we present sppIDer, a pipeline for the characterization of interspecies hybrids and pure species, that illuminates the complete composition of genomes. sppIDer maps short-read sequencing data to a combination genome built from reference genomes of several species of interest and assesses the genomic contribution and relative ploidy of each parental species, producing a series of colorful graphical outputs ready for publication. As a proof-of-concept, we use the genus Saccharomyces to detect and visualize both interspecies hybrids and pure strains, even with missing parental reference genomes. Through simulation, we show that sppIDer is robust to variable reference genome qualities and performs well with low-coverage data. We further demonstrate the power of this approach in plants, animals, and other fungi. sppIDer is robust to many different inputs and provides visually intuitive insight into genome composition that enables the rapid identification of species and their interspecies hybrids. sppIDer exists as a Docker image, which is a reusable, reproducible, transparent, and simple-to-run package that automates the pipeline and installation of the required dependencies (https://github.com/GLBRC/sppIDer; last accessed September 6, 2018).
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Affiliation(s)
- Quinn K Langdon
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI.,Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI
| | - David Peris
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI.,Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI.,DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI.,Department of Food Biotechnology, Institute of Agrochemistry and Food Technology (IATA), CSIC, Valencia, Spain
| | - Brian Kyle
- Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI
| | - Chris Todd Hittinger
- Laboratory of Genetics, J. F. Crow Institute for the Study of Evolution, Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI.,Wisconsin Energy Institute, University of Wisconsin-Madison, Madison, WI.,DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI
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19
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Wai A, Shen C, Carta A, Dansen A, Crous PW, Hausner G. Intron-encoded ribosomal proteins and N-acetyltransferases within the mitochondrial genomes of fungi: here today, gone tomorrow? Mitochondrial DNA A DNA Mapp Seq Anal 2019; 30:573-584. [DOI: 10.1080/24701394.2019.1580272] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alvan Wai
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | - Chen Shen
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | - Andrell Carta
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | - Alexandra Dansen
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | - Pedro W. Crous
- The Westerdijk Fungal Biodiversity Institute, Uppsalalaan 8, Utrecht, The Netherlands
| | - Georg Hausner
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
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20
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Fan WW, Zhang S, Zhang YJ. The complete mitochondrial genome of the Chan-hua fungus Isaria cicadae: a tale of intron evolution in Cordycipitaceae. Environ Microbiol 2019; 21:864-879. [PMID: 30623556 DOI: 10.1111/1462-2920.14522] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/04/2019] [Accepted: 01/05/2019] [Indexed: 11/30/2022]
Abstract
Isaria cicadae is an entomogenous fungus of great medicinal value. Its nuclear genome has been reported, while its mitogenome remains unknown. Herein, we first described its mitogenome and then inferred intron evolution from both intraspecific and interspecific perspectives. The fungus represented the largest mitogenome (56.6 kb in strain CCAD02) known in Cordycipitaceae due to the presence of 25 introns interrupting nine genes. Comparison of three I. cicadae strains revealed intron presence/absence dynamics at six intron loci plus a few indels and single nucleotide polymorphisms. Phylogenetic analyses confirmed the placement of I. cicadae in Cordycipitaceae. Comparison of 10 Cordycipitaceae species revealed a high degree of synteny and conserved genetic content. They, however, varied in intron numbers (1-25 per species) with overall 34 intron loci identified, which resulted in more than twofold variations in mitogenome sizes (24.5-56.6 kb). An rnl intron encoding ribosomal protein S3 was present in all species, suggesting its early invasion in Cordycipitaceae, while further divergence occurred for this intron. The other introns identified in this study were present in some, but not all of the species and have undergone multiple gains and losses in Cordycipitaceae. This study greatly enhanced our understanding of intron evolution in Cordycipitaceae.
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Affiliation(s)
- Wen-Wen Fan
- School of Life Science, Shanxi University, Taiyuan 030006, China.,Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Shu Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
| | - Yong-Jie Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
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21
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Xiao S, Nguyen DT, Wu B, Hao W. Genetic Drift and Indel Mutation in the Evolution of Yeast Mitochondrial Genome Size. Genome Biol Evol 2018; 9:3088-3099. [PMID: 29126284 PMCID: PMC5714193 DOI: 10.1093/gbe/evx232] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2017] [Indexed: 12/27/2022] Open
Abstract
Mitochondrial genomes (mitogenomes) are remarkably diverse in genome size and organization, but the origins of dynamic mitogenome architectures are still poorly understood. For instance, the mutational burden hypothesis postulates that the drastic difference between large plant mitogenomes and streamlined animal mitogenomes can be driven by their different mutation rates. However, inconsistent trends between mitogenome sizes and mutation rates have been documented in several lineages. These conflicting results highlight the need of systematic and sophisticated investigations on the evolution and diversity of mitogenome architecture. This study took advantage of the strikingly variable mitogenome size among different yeast species and also among intraspecific strains, examined sequence dynamics of introns, GC-clusters, tandem repeats, mononucleotide repeats (homopolymers) and evaluated their contributions to genome size variation. The contributions of these sequence features to mitogenomic variation are dependent on the timescale, over which extant genomes evolved from their last common ancestor, perhaps due to a combination of different turnover rates of mobile sequences, variable insertion spaces, and functional constraints. We observed a positive correlation between mitogenome size and the level of genetic drift, suggesting that mitogenome expansion in yeast is likely driven by multiple types of sequence insertions in a primarily nonadaptive manner. Although these cannot be explained directly by the mutational burden hypothesis, our results support an important role of genetic drift in the evolution of yeast mitogenomes.
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Affiliation(s)
- Shujie Xiao
- Department of Biological Sciences, Wayne State University
| | - Duong T Nguyen
- Department of Biological Sciences, Wayne State University
| | - Baojun Wu
- Department of Biological Sciences, Wayne State University.,Department of Biology, Clark University, Worcester, MA
| | - Weilong Hao
- Department of Biological Sciences, Wayne State University
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22
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Carbonetto B, Ramsayer J, Nidelet T, Legrand J, Sicard D. Bakery yeasts, a new model for studies in ecology and evolution. Yeast 2018; 35:591-603. [DOI: 10.1002/yea.3350] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/07/2018] [Accepted: 05/07/2018] [Indexed: 12/18/2022] Open
Affiliation(s)
- Belén Carbonetto
- SPO, Univ Montpellier, INRA; Montpellier SupAgro; Montpellier France
- Instituto Gulbenkian de Ciência; Bioinformatics and Computational Biology Unit; Oeiras Portugal
| | - Johan Ramsayer
- SPO, Univ Montpellier, INRA; Montpellier SupAgro; Montpellier France
| | - Thibault Nidelet
- SPO, Univ Montpellier, INRA; Montpellier SupAgro; Montpellier France
| | - Judith Legrand
- GQE-Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech; Université Paris-Saclay; Gif-sur-Yvette France
| | - Delphine Sicard
- SPO, Univ Montpellier, INRA; Montpellier SupAgro; Montpellier France
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23
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Liao X, Zhao Y, Kong X, Khan A, Zhou B, Liu D, Kashif MH, Chen P, Wang H, Zhou R. Complete sequence of kenaf (Hibiscus cannabinus) mitochondrial genome and comparative analysis with the mitochondrial genomes of other plants. Sci Rep 2018; 8:12714. [PMID: 30143661 PMCID: PMC6109132 DOI: 10.1038/s41598-018-30297-w] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 07/27/2018] [Indexed: 01/01/2023] Open
Abstract
Plant mitochondrial (mt) genomes are species specific due to the vast of foreign DNA migration and frequent recombination of repeated sequences. Sequencing of the mt genome of kenaf (Hibiscus cannabinus) is essential for elucidating its evolutionary characteristics. In the present study, single-molecule real-time sequencing technology (SMRT) was used to sequence the complete mt genome of kenaf. Results showed that the complete kenaf mt genome was 569,915 bp long and consisted of 62 genes, including 36 protein-coding, 3 rRNA and 23 tRNA genes. Twenty-five introns were found among nine of the 36 protein-coding genes, and five introns were trans-spliced. A comparative analysis with other plant mt genomes showed that four syntenic gene clusters were conserved in all plant mtDNAs. Fifteen chloroplast-derived fragments were strongly associated with mt genes, including the intact sequences of the chloroplast genes psaA, ndhB and rps7. According to the plant mt genome evolution analysis, some ribosomal protein genes and succinate dehydrogenase genes were frequently lost during the evolution of angiosperms. Our data suggest that the kenaf mt genome retained evolutionarily conserved characteristics. Overall, the complete sequencing of the kenaf mt genome provides additional information and enhances our better understanding of mt genomic evolution across angiosperms.
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Affiliation(s)
- Xiaofang Liao
- College of Life Sciences and Technology, Guangxi University, Nanning, 530005, China
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
- Cash Crop Institute of Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Yanhong Zhao
- Cash Crop Institute of Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Xiangjun Kong
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
| | - Aziz Khan
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
| | - Bujin Zhou
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
| | - Dongmei Liu
- Key Laboratory of Plant-Microbe Interactions, Department of Life Science and Food, Shangqiu Normal University, Shangqiu, 476000, China
| | - Muhammad Haneef Kashif
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
| | - Peng Chen
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China
| | - Hong Wang
- Department of Biochemistry, University of Saskatchewan, Saskatoon, SK, S7N5E5, Canada
| | - Ruiyang Zhou
- Key Laboratory of Plant Genetic and Breeding, College of Agriculture, Guangxi University, Nanning, 530005, China.
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24
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Wu B, Macielog AI, Hao W. Origin and Spread of Spliceosomal Introns: Insights from the Fungal Clade Zymoseptoria. Genome Biol Evol 2018; 9:2658-2667. [PMID: 29048531 PMCID: PMC5647799 DOI: 10.1093/gbe/evx211] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2017] [Indexed: 12/16/2022] Open
Abstract
Spliceosomal introns are a key feature of eukaryote genome architecture and have been proposed to originate from selfish group II introns from an endosymbiotic bacterium, that is, the ancestor of mitochondria. However, the mechanisms underlying the wide spread of spliceosomal introns across eukaryotic genomes have been obscure. In this study, we characterize the dynamic evolution of spliceosomal introns in the fungal genus Zymoseptoria at different evolutionary scales, that is, within a genome, among conspecific strains within species, and between different species. Within the genome, spliceosomal introns can proliferate in unrelated genes and intergenic regions. Among conspecific strains, spliceosomal introns undergo rapid turnover (gains and losses) and frequent sequence exchange between geographically distinct strains. Furthermore, spliceosomal introns could undergo introgression between distinct species, which can further promote intron invasion and proliferation. The dynamic invasion and proliferation processes of spliceosomal introns resemble the life cycles of mobile selfish (group I/II) introns, and these intron movements, at least in part, account for the dramatic processes of intron gain and intron loss during eukaryotic evolution.
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Affiliation(s)
- Baojun Wu
- Department of Biology, Clark University, Worcester, MA, USA
| | | | - Weilong Hao
- Department of Biological Sciences, Wayne State University
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25
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Korovesi AG, Ntertilis M, Kouvelis VN. Mt-rps3 is an ancient gene which provides insight into the evolution of fungal mitochondrial genomes. Mol Phylogenet Evol 2018; 127:74-86. [PMID: 29763662 DOI: 10.1016/j.ympev.2018.04.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 02/24/2018] [Accepted: 04/23/2018] [Indexed: 12/30/2022]
Abstract
The nuclear ribosomal protein S3 (Rps3) is implicated in the assembly of the ribosomal small subunit. Fungi and plants present a gene copy in their mitochondrial (mt) genomes. An analysis of 303 complete fungal mt genomes showed that, when rps3 is found, it is either a free-standing gene or an anchored gene within the omega intron of the rnl gene. Early divergent fungi, Basidiomycota and all yeasts but the CTG group belong to the first case, and Pezizomycotina to the second. Its position, size and genetic code employed are conserved within species of the same Order. Size variability is attributed to different number of repeats. These repeats consist of AT-rich sequences. MtRps3 proteins lack the KH domain, necessary for binding to rRNA, in their N-terminal region. Their C-terminal region is conserved in all Domains of life. Phylogenetic analysis showed that nuclear and mtRps3 proteins are descendants of archaeal and a-proteobacterial homologues, respectively. Thus, fungal mt-rps3 gene is an ancient gene which evolved within the endosymbiotic model and presents different evolutionary routes: (a) coming from a-proteobacteria, it was relocated to another region of the mt genome, (b) via its insertion to the omega intron, it was transferred to the nucleus and/or got lost, and (c) it was re-routed to the mt genome again. Today, Basidiomycota and Saccharomycetales seem to follow the first evolutionary route and almost all Pezizomycotina support the second scenario with their exceptions being the result of the third scenario, i.e., the gene's re-entry to the mt genome.
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Affiliation(s)
- Artemis G Korovesi
- Department of Genetics and Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Ntertilis
- Department of Genetics and Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Vassili N Kouvelis
- Department of Genetics and Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece.
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26
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Szabóová D, Hapala I, Sulo P. The complete mitochondrial DNA sequence from Kazachstania sinensis reveals a general +1C frameshift mechanism in CTGY codons. FEMS Yeast Res 2018. [PMID: 29528462 DOI: 10.1093/femsyr/foy028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The complete mitochondrial DNA (mtDNA) sequence from Kazachstania sinensis was analysed and compared to mtDNA from related yeasts. It contained the same set of genes; however, it only contained 23 tRNAs, as the trnR2 gene was absent. Most of the 12 introns within cox1, cob and rnl genes were inserted in the same sites as in other yeasts; however, two introns in rnl were in unusual positions. Traits such as gene order and GC cluster number were more related to Saccharomyces than to the other Kazachstania or linked clades. The most exceptional feature was the +1 frameshift in cox3, atp6 and cob open reading frames that was also found in other Kazachstania, Nakaseomyces delphensis and Candida glabrata. Comparison of DNA and protein sequences revealed the universal sites of +1C frameshifts were either CTGT or CTGC sequences. Moreover, an A→G substitution was found at position 37 in the anticodon stem loop tRNA gene for cysteine in all species with frameshifts but not in other sibling yeasts. This substitution allowed strong Watson-Crick base-pairing between an unmodified G (ACG) and the skipped C in the CTGY, leading to this quadruplet being read as cysteine.
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Affiliation(s)
- Dana Szabóová
- Department of Biochemistry, Comenius University, Faculty of Natural Sciences, Ilkovicova ulica 6, Bratislava 84215, Slovakia
| | - Ivan Hapala
- Institute of Animal Biochemistry and Genetics, Centre of Biosciences SAS, Dúbravská 9, Bratislava 840 05, Slovakia
| | - Pavol Sulo
- Department of Biochemistry, Comenius University, Faculty of Natural Sciences, Ilkovicova ulica 6, Bratislava 84215, Slovakia
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27
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Abstract
Genetic variation in mitochondrial DNA (mtDNA) provides adaptive potential although the underlying genetic architecture of fitness components within mtDNAs is not known. To dissect functional variation within mtDNAs, we first identified naturally occurring mtDNAs that conferred high or low fitness in Saccharomyces cerevisiae by comparing growth in strains containing identical nuclear genotypes but different mtDNAs. During respiratory growth under temperature and oxidative stress conditions, mitotype effects were largely independent of nuclear genotypes even in the presence of mito-nuclear interactions. Recombinant mtDNAs were generated to determine fitness components within high- and low-fitness mtDNAs. Based on phenotypic distributions of isogenic strains containing recombinant mtDNAs, we found that multiple loci contributed to mitotype fitness differences. These mitochondrial loci interacted in epistatic, nonadditive ways in certain environmental conditions. Mito-mito epistasis (i.e., nonadditive interactions between mitochondrial loci) influenced fitness in progeny from four different crosses, suggesting that mito-mito epistasis is a widespread phenomenon in yeast and other systems with recombining mtDNAs. Furthermore, we found that interruption of coadapted mito-mito interactions produced recombinant mtDNAs with lower fitness. Our results demonstrate that mito-mito epistasis results in functional variation through mitochondrial recombination in fungi, providing modes for adaptive evolution and the generation of mito-mito incompatibilities.
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28
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Peris D, Pérez-Torrado R, Hittinger CT, Barrio E, Querol A. On the origins and industrial applications ofSaccharomyces cerevisiae×Saccharomyces kudriavzeviihybrids. Yeast 2017; 35:51-69. [DOI: 10.1002/yea.3283] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/15/2017] [Accepted: 09/27/2017] [Indexed: 12/22/2022] Open
Affiliation(s)
- David Peris
- Laboratory of Genetics, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, Genome Center of Wisconsin, DOE Great Lakes Bioenergy Research Center; University of Wisconsin-Madison; Madison WI USA
- Department of Food Biotechnology; Institute of Agrochemistry and Food Technology (IATA), CSIC; Valencia Spain
| | - Roberto Pérez-Torrado
- Department of Food Biotechnology; Institute of Agrochemistry and Food Technology (IATA), CSIC; Valencia Spain
| | - Chris Todd Hittinger
- Laboratory of Genetics, Wisconsin Energy Institute, J. F. Crow Institute for the Study of Evolution, Genome Center of Wisconsin, DOE Great Lakes Bioenergy Research Center; University of Wisconsin-Madison; Madison WI USA
| | - Eladio Barrio
- Department of Food Biotechnology; Institute of Agrochemistry and Food Technology (IATA), CSIC; Valencia Spain
- Department of Genetics; University of Valencia; Valencia Spain
| | - Amparo Querol
- Department of Food Biotechnology; Institute of Agrochemistry and Food Technology (IATA), CSIC; Valencia Spain
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29
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Sulo P, Szabóová D, Bielik P, Poláková S, Šoltys K, Jatzová K, Szemes T. The evolutionary history of Saccharomyces species inferred from completed mitochondrial genomes and revision in the 'yeast mitochondrial genetic code'. DNA Res 2017; 24:571-583. [PMID: 28992063 PMCID: PMC5726470 DOI: 10.1093/dnares/dsx026] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/23/2017] [Indexed: 11/24/2022] Open
Abstract
The yeast Saccharomyces are widely used to test ecological and evolutionary hypotheses. A large number of nuclear genomic DNA sequences are available, but mitochondrial genomic data are insufficient. We completed mitochondrial DNA (mtDNA) sequencing from Illumina MiSeq reads for all Saccharomyces species. All are circularly mapped molecules decreasing in size with phylogenetic distance from Saccharomyces cerevisiae but with similar gene content including regulatory and selfish elements like origins of replication, introns, free-standing open reading frames or GC clusters. Their most profound feature is species-specific alteration in gene order. The genetic code slightly differs from well-established yeast mitochondrial code as GUG is used rarely as the translation start and CGA and CGC code for arginine. The multilocus phylogeny, inferred from mtDNA, does not correlate with the trees derived from nuclear genes. mtDNA data demonstrate that Saccharomyces cariocanus should be assigned as a separate species and Saccharomyces bayanus CBS 380T should not be considered as a distinct species due to mtDNA nearly identical to Saccharomyces uvarum mtDNA. Apparently, comparison of mtDNAs should not be neglected in genomic studies as it is an important tool to understand the origin and evolutionary history of some yeast species.
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Affiliation(s)
- Pavol Sulo
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
| | - Dana Szabóová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
| | - Peter Bielik
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
| | - Silvia Poláková
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
| | - Katarína Šoltys
- Comenius University Science Park, Bratislava 841 04, Slovakia
| | - Katarína Jatzová
- Department of Biochemistry, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
| | - Tomáš Szemes
- Comenius University Science Park, Bratislava 841 04, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava 842 15, Slovakia
- Geneton s.r.o., Galvaniho 7, Bratislava 821 04, Slovakia
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30
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Guha TK, Wai A, Mullineux ST, Hausner G. The intron landscape of the mtDNA cytb gene among the Ascomycota: introns and intron-encoded open reading frames. Mitochondrial DNA A DNA Mapp Seq Anal 2017; 29:1015-1024. [DOI: 10.1080/24701394.2017.1404042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tuhin K. Guha
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | - Alvan Wai
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
| | | | - Georg Hausner
- Department of Microbiology, University of Manitoba, Winnipeg, Canada
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31
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Bock R. Witnessing Genome Evolution: Experimental Reconstruction of Endosymbiotic and Horizontal Gene Transfer. Annu Rev Genet 2017; 51:1-22. [PMID: 28846455 DOI: 10.1146/annurev-genet-120215-035329] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Present day mitochondria and plastids (chloroplasts) evolved from formerly free-living bacteria that were acquired through endosymbiosis more than a billion years ago. Conversion of the bacterial endosymbionts into cell organelles involved the massive translocation of genetic material from the organellar genomes to the nucleus. The development of transformation technologies for organellar genomes has made it possible to reconstruct this endosymbiotic gene transfer in laboratory experiments and study the mechanisms involved. Recently, the horizontal transfer of genetic information between organisms has also become amenable to experimental investigation. It led to the discovery of horizontal genome transfer as an asexual process generating new species and new combinations of nuclear and organellar genomes. This review describes experimental approaches towards studying endosymbiotic and horizontal gene transfer processes, discusses the new knowledge gained from these approaches about both the evolutionary significance of gene transfer and the underlying molecular mechanisms, and highlights exciting possibilities to exploit gene and genome transfer in biotechnology and synthetic biology.
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Affiliation(s)
- Ralph Bock
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, D-14476 Potsdam-Golm, Germany;
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32
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33
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Ortiz-Merino RA, Kuanyshev N, Braun-Galleani S, Byrne KP, Porro D, Branduardi P, Wolfe KH. Evolutionary restoration of fertility in an interspecies hybrid yeast, by whole-genome duplication after a failed mating-type switch. PLoS Biol 2017; 15:e2002128. [PMID: 28510588 PMCID: PMC5433688 DOI: 10.1371/journal.pbio.2002128] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 04/13/2017] [Indexed: 11/30/2022] Open
Abstract
Many interspecies hybrids have been discovered in yeasts, but most of these hybrids are asexual and can replicate only mitotically. Whole-genome duplication has been proposed as a mechanism by which interspecies hybrids can regain fertility, restoring their ability to perform meiosis and sporulate. Here, we show that this process occurred naturally during the evolution of Zygosaccharomyces parabailii, an interspecies hybrid that was formed by mating between 2 parents that differed by 7% in genome sequence and by many interchromosomal rearrangements. Surprisingly, Z. parabailii has a full sexual cycle and is genetically haploid. It goes through mating-type switching and autodiploidization, followed by immediate sporulation. We identified the key evolutionary event that enabled Z. parabailii to regain fertility, which was breakage of 1 of the 2 homeologous copies of the mating-type (MAT) locus in the hybrid, resulting in a chromosomal rearrangement and irreparable damage to 1 MAT locus. This rearrangement was caused by HO endonuclease, which normally functions in mating-type switching. With 1 copy of MAT inactivated, the interspecies hybrid now behaves as a haploid. Our results provide the first demonstration that MAT locus damage is a naturally occurring evolutionary mechanism for whole-genome duplication and restoration of fertility to interspecies hybrids. The events that occurred in Z. parabailii strongly resemble those postulated to have caused ancient whole-genome duplication in an ancestor of Saccharomyces cerevisiae. It has recently been proposed that the whole-genome duplication (WGD) event that occurred during evolution of an ancestor of the yeast S. cerevisiae was the result of a hybridization between 2 parental yeast species that were significantly divergent in DNA sequence, followed by a doubling of the genome content to restore the hybrid’s ability to make viable spores. However, the molecular details of how genome doubling could occur in a hybrid were unclear because most known interspecies hybrid yeasts have no sexual cycle. We show here that Z. parabailii provides an almost exact precedent for the steps proposed to have occurred during the S. cerevisiae WGD. Two divergent haploid parental species, each with 8 chromosomes, mated to form a hybrid that was initially sterile but regained fertility when 1 copy of its mating-type locus became damaged by the mating-type switching apparatus. As a result of this damage, the Z. parabailii life cycle now consists of a 16-chromosome haploid phase and a transient 32-chromosome diploid phase. Each pair of homeologous genes behaves as 2 independent Mendelian loci during meiosis.
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Affiliation(s)
- Raúl A. Ortiz-Merino
- UCD Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
| | - Nurzhan Kuanyshev
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | | | - Kevin P. Byrne
- UCD Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
| | - Danilo Porro
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Paola Branduardi
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Kenneth H. Wolfe
- UCD Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
- * E-mail:
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34
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Yue JX, Li J, Aigrain L, Hallin J, Persson K, Oliver K, Bergström A, Coupland P, Warringer J, Lagomarsino MC, Fischer G, Durbin R, Liti G. Contrasting evolutionary genome dynamics between domesticated and wild yeasts. Nat Genet 2017; 49:913-924. [PMID: 28416820 PMCID: PMC5446901 DOI: 10.1038/ng.3847] [Citation(s) in RCA: 204] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/22/2017] [Indexed: 12/13/2022]
Abstract
Structural rearrangements have long been recognized as an important source of genetic variation, with implications in phenotypic diversity and disease, yet their detailed evolutionary dynamics remain elusive. Here we use long-read sequencing to generate end-to-end genome assemblies for 12 strains representing major subpopulations of the partially domesticated yeast Saccharomyces cerevisiae and its wild relative Saccharomyces paradoxus. These population-level high-quality genomes with comprehensive annotation enable precise definition of chromosomal boundaries between cores and subtelomeres and a high-resolution view of evolutionary genome dynamics. In chromosomal cores, S. paradoxus shows faster accumulation of balanced rearrangements (inversions, reciprocal translocations and transpositions), whereas S. cerevisiae accumulates unbalanced rearrangements (novel insertions, deletions and duplications) more rapidly. In subtelomeres, both species show extensive interchromosomal reshuffling, with a higher tempo in S. cerevisiae. Such striking contrasts between wild and domesticated yeasts are likely to reflect the influence of human activities on structural genome evolution.
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Affiliation(s)
- Jia-Xing Yue
- Université Côte d'Azur, CNRS, INSERM, IRCAN, Nice, France
| | - Jing Li
- Université Côte d'Azur, CNRS, INSERM, IRCAN, Nice, France
| | | | - Johan Hallin
- Université Côte d'Azur, CNRS, INSERM, IRCAN, Nice, France
| | - Karl Persson
- Department of Chemistry and Molecular Biology, Gothenburg University, Gothenburg, Sweden
| | | | | | | | - Jonas Warringer
- Department of Chemistry and Molecular Biology, Gothenburg University, Gothenburg, Sweden
| | - Marco Cosentino Lagomarsino
- Laboratory of Computational and Quantitative Biology, Institut de Biologie Paris-Seine, UPMC University Paris 06, Sorbonne Universités, CNRS, Paris, France
| | - Gilles Fischer
- Laboratory of Computational and Quantitative Biology, Institut de Biologie Paris-Seine, UPMC University Paris 06, Sorbonne Universités, CNRS, Paris, France
| | | | - Gianni Liti
- Université Côte d'Azur, CNRS, INSERM, IRCAN, Nice, France
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35
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Mitochondrial introgression suggests extensive ancestral hybridization events among Saccharomyces species. Mol Phylogenet Evol 2017; 108:49-60. [PMID: 28189617 DOI: 10.1016/j.ympev.2017.02.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/27/2017] [Accepted: 02/06/2017] [Indexed: 11/23/2022]
Abstract
Horizontal gene transfer (HGT) in eukaryotic plastids and mitochondrial genomes is common, and plays an important role in organism evolution. In yeasts, recent mitochondrial HGT has been suggested between S. cerevisiae and S. paradoxus. However, few strains have been explored given the lack of accurate mitochondrial genome annotations. Mitochondrial genome sequences are important to understand how frequent these introgressions occur, and their role in cytonuclear incompatibilities and fitness. Indeed, most of the Bateson-Dobzhansky-Muller genetic incompatibilities described in yeasts are driven by cytonuclear incompatibilities. We herein explored the mitochondrial inheritance of several worldwide distributed wild Saccharomyces species and their hybrids isolated from different sources and geographic origins. We demonstrated the existence of several recombination points in mitochondrial region COX2-ORF1, likely mediated by either the activity of the protein encoded by the ORF1 (F-SceIII) gene, a free-standing homing endonuclease, or mostly facilitated by A+T tandem repeats and regions of integration of GC clusters. These introgressions were shown to occur among strains of the same species and among strains of different species, which suggests a complex model of Saccharomyces evolution that involves several ancestral hybridization events in wild environments.
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36
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Complete Mitochondrial Genome Sequence of the Pezizomycete Pyronema confluens. GENOME ANNOUNCEMENTS 2016; 4:4/3/e00355-16. [PMID: 27174271 PMCID: PMC4866847 DOI: 10.1128/genomea.00355-16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The complete mitochondrial genome of the ascomycete Pyronema confluens has been sequenced. The circular genome has a size of 191 kb and contains 48 protein-coding genes, 26 tRNA genes, and two rRNA genes. Of the protein-coding genes, 14 encode conserved mitochondrial proteins, and 31 encode predicted homing endonuclease genes.
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37
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Abstract
Many groups of closely related species have reticulate phylogenies. Recent genomic analyses are showing this in many insects and vertebrates, as well as in microbes and plants. In microbes, lateral gene transfer is the dominant process that spoils strictly tree-like phylogenies, but in multicellular eukaryotes hybridization and introgression among related species is probably more important. Because many species, including the ancestors of ancient major lineages, seem to evolve rapidly in adaptive radiations, some sexual compatibility may exist among them. Introgression and reticulation can thereby affect all parts of the tree of life, not just the recent species at the tips. Our understanding of adaptive evolution, speciation, phylogenetics, and comparative biology must adapt to these mostly recent findings. Introgression has important practical implications as well, not least for the management of genetically modified organisms in pest and disease control.
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Affiliation(s)
- James Mallet
- Department of Organismic and Evolutionary BiologyHarvard UniversityCambridgeMAUSA
- Department of Genetics, Evolution and EnvironmentUniversity College LondonLondonUK
| | - Nora Besansky
- Department of Biological Sciences and Eck Institute for Global HealthUniversity of Notre DameNotre DameINUSA
| | - Matthew W. Hahn
- Department of Biology and School of Informatics and ComputingIndiana UniversityBloomingtonINUSA
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38
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Masneuf-Pomarede I, Bely M, Marullo P, Albertin W. The Genetics of Non-conventional Wine Yeasts: Current Knowledge and Future Challenges. Front Microbiol 2016; 6:1563. [PMID: 26793188 PMCID: PMC4707289 DOI: 10.3389/fmicb.2015.01563] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 12/23/2015] [Indexed: 11/13/2022] Open
Abstract
Saccharomyces cerevisiae is by far the most widely used yeast in oenology. However, during the last decade, several other yeasts species has been purposed for winemaking as they could positively impact wine quality. Some of these non-conventional yeasts (Torulaspora delbrueckii, Metschnikowia pulcherrima, Pichia kluyveri, Lachancea thermotolerans, etc.) are now proposed as starters culture for winemakers in mixed fermentation with S. cerevisiae, and several others are the subject of various studies (Hanseniaspora uvarum, Starmerella bacillaris, etc.). Along with their biotechnological use, the knowledge of these non-conventional yeasts greatly increased these last 10 years. The aim of this review is to describe the last updates and the current state-of-art of the genetics of non-conventional yeasts (including S. uvarum, T. delbrueckii, S. bacillaris, etc.). We describe how genomics and genetics tools provide new data into the population structure and biodiversity of non-conventional yeasts in winemaking environments. Future challenges will lie on the development of selection programs and/or genetic improvement of these non-conventional species. We discuss how genetics, genomics and the advances in next-generation sequencing will help the wine industry to develop the biotechnological use of non-conventional yeasts to improve the quality and differentiation of wines.
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Affiliation(s)
- Isabelle Masneuf-Pomarede
- ISVV, Unité de Recherche Œnologie EA 4577, USC 1366 Institut National de la Recherche Agronomique, Bordeaux INP, University BordeauxVillenave d'Ornon, France
- Bordeaux Sciences AgroGradignan, France
| | - Marina Bely
- ISVV, Unité de Recherche Œnologie EA 4577, USC 1366 Institut National de la Recherche Agronomique, Bordeaux INP, University BordeauxVillenave d'Ornon, France
| | - Philippe Marullo
- ISVV, Unité de Recherche Œnologie EA 4577, USC 1366 Institut National de la Recherche Agronomique, Bordeaux INP, University BordeauxVillenave d'Ornon, France
- BiolaffortBordeaux, France
| | - Warren Albertin
- ISVV, Unité de Recherche Œnologie EA 4577, USC 1366 Institut National de la Recherche Agronomique, Bordeaux INP, University BordeauxVillenave d'Ornon, France
- ENSCBP, Bordeaux INPPessac, France
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Genomics and the making of yeast biodiversity. Curr Opin Genet Dev 2015; 35:100-9. [PMID: 26649756 DOI: 10.1016/j.gde.2015.10.008] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 10/28/2015] [Accepted: 10/29/2015] [Indexed: 12/22/2022]
Abstract
Yeasts are unicellular fungi that do not form fruiting bodies. Although the yeast lifestyle has evolved multiple times, most known species belong to the subphylum Saccharomycotina (syn. Hemiascomycota, hereafter yeasts). This diverse group includes the premier eukaryotic model system, Saccharomyces cerevisiae; the common human commensal and opportunistic pathogen, Candida albicans; and over 1000 other known species (with more continuing to be discovered). Yeasts are found in every biome and continent and are more genetically diverse than angiosperms or chordates. Ease of culture, simple life cycles, and small genomes (∼10-20Mbp) have made yeasts exceptional models for molecular genetics, biotechnology, and evolutionary genomics. Here we discuss recent developments in understanding the genomic underpinnings of the making of yeast biodiversity, comparing and contrasting natural and human-associated evolutionary processes. Only a tiny fraction of yeast biodiversity and metabolic capabilities has been tapped by industry and science. Expanding the taxonomic breadth of deep genomic investigations will further illuminate how genome function evolves to encode their diverse metabolisms and ecologies.
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He D, Fu CJ, Baldauf SL. Multiple Origins of Eukaryotic cox15 Suggest Horizontal Gene Transfer from Bacteria to Jakobid Mitochondrial DNA. Mol Biol Evol 2015; 33:122-33. [PMID: 26412445 DOI: 10.1093/molbev/msv201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The most gene-rich and bacterial-like mitochondrial genomes known are those of Jakobida (Excavata). Of these, the most extreme example to date is the Andalucia godoyi mitochondrial DNA (mtDNA), including a cox15 gene encoding the respiratory enzyme heme A synthase (HAS), which is nuclear-encoded in nearly all other mitochondriate eukaryotes. Thus cox15 in eukaryotes appears to be a classic example of mitochondrion-to-nucleus (endosymbiotic) gene transfer, with A. godoyi uniquely retaining the ancestral state. However, our analyses reveal two highly distinct HAS types (encoded by cox15-1 and cox15-2 genes) and identify A. godoyi mitochondrial cox15-encoded HAS as type-1 and all other eukaryotic cox15-encoded HAS as type-2. Molecular phylogeny places the two HAS types in widely separated clades with eukaryotic type-2 HAS clustering with the bulk of α-proteobacteria (>670 sequences), whereas A. godoyi type-1 HAS clusters with an eclectic set of bacteria and archaea including two α-proteobacteria missing from the type-2 clade. This wide phylogenetic separation of the two HAS types is reinforced by unique features of their predicted protein structures. Meanwhile, RNA-sequencing and genomic analyses fail to detect either cox15 type in the nuclear genome of any jakobid including A. godoyi. This suggests that not only is cox15-1 a relatively recent acquisition unique to the Andalucia lineage but also the jakobid last common ancestor probably lacked both cox15 types. These results indicate that uptake of foreign genes by mtDNA is more taxonomically widespread than previously thought. They also caution against the assumption that all α-proteobacterial-like features of eukaryotes are ancient remnants of endosymbiosis.
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Affiliation(s)
- Ding He
- Program in Systematic Biology, Department of Organismal Biology, Uppsala University, Uppsala, Sweden
| | - Cheng-Jie Fu
- Program in Systematic Biology, Department of Organismal Biology, Uppsala University, Uppsala, Sweden
| | - Sandra L Baldauf
- Program in Systematic Biology, Department of Organismal Biology, Uppsala University, Uppsala, Sweden
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