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Lax C, Mondo SJ, Osorio-Concepción M, Muszewska A, Corrochano-Luque M, Gutiérrez G, Riley R, Lipzen A, Guo J, Hundley H, Amirebrahimi M, Ng V, Lorenzo-Gutiérrez D, Binder U, Yang J, Song Y, Cánovas D, Navarro E, Freitag M, Gabaldón T, Grigoriev IV, Corrochano LM, Nicolás FE, Garre V. Symmetric and asymmetric DNA N6-adenine methylation regulates different biological responses in Mucorales. Nat Commun 2024; 15:6066. [PMID: 39025853 PMCID: PMC11258239 DOI: 10.1038/s41467-024-50365-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 07/05/2024] [Indexed: 07/20/2024] Open
Abstract
DNA N6-adenine methylation (6mA) has recently gained importance as an epigenetic modification in eukaryotes. Its function in lineages with high levels, such as early-diverging fungi (EDF), is of particular interest. Here, we investigated the biological significance and evolutionary implications of 6mA in EDF, which exhibit divergent evolutionary patterns in 6mA usage. The analysis of two Mucorales species displaying extreme 6mA usage reveals that species with high 6mA levels show symmetric methylation enriched in highly expressed genes. In contrast, species with low 6mA levels show mostly asymmetric 6mA. Interestingly, transcriptomic regulation throughout development and in response to environmental cues is associated with changes in the 6mA landscape. Furthermore, we identify an EDF-specific methyltransferase, likely originated from endosymbiotic bacteria, as responsible for asymmetric methylation, while an MTA-70 methylation complex performs symmetric methylation. The distinct phenotypes observed in the corresponding mutants reinforced the critical role of both types of 6mA in EDF.
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Affiliation(s)
- Carlos Lax
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
| | - Stephen J Mondo
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, 80523, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Macario Osorio-Concepción
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
| | - Anna Muszewska
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5A, 02-106, Warsaw, Poland
| | | | - Gabriel Gutiérrez
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - Robert Riley
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Anna Lipzen
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jie Guo
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Hope Hundley
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Mojgan Amirebrahimi
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Vivian Ng
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Damaris Lorenzo-Gutiérrez
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
| | - Ulrike Binder
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Junhuan Yang
- College of Food Science and Engineering, Lingnan Normal University, Zhanjiang, 524048, China
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255049, China
| | - David Cánovas
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - Eusebio Navarro
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
| | - Michael Freitag
- Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, 97331, USA
| | - Toni Gabaldón
- Barcelona Supercomputing Centre (BSC-CNS), Plaça Eusebi Güell, 1-3, 08034, Barcelona, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac, 10, 08028, Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC), Barcelona, Spain
| | - Igor V Grigoriev
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Luis M Corrochano
- Departamento de Genética, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain.
| | - Francisco E Nicolás
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain.
| | - Victoriano Garre
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, Spain.
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Nai YS, Huang YC, Yen MR, Chen PY. Diversity of Fungal DNA Methyltransferases and Their Association With DNA Methylation Patterns. Front Microbiol 2021; 11:616922. [PMID: 33552027 PMCID: PMC7862722 DOI: 10.3389/fmicb.2020.616922] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/28/2020] [Indexed: 11/24/2022] Open
Abstract
DNA methyltransferases (DNMTs) are a group of proteins that catalyze DNA methylation by transferring a methyl group to DNA. The genetic variation in DNMTs results in differential DNA methylation patterns associated with various biological processes. In fungal species, DNMTs and their DNA methylation profiles were found to be very diverse and have gained many research interests. We reviewed fungal DNMTs in terms of their biological functions, protein domain structures, and their associated epigenetic regulations compared to those known in plant and animal systems. In addition, we summarized recent reports on potential RNA-directed DNA methylation (RdDM) related to DNMT5 in fungi. We surveyed up to 40 fungal species with published genome-wide DNA methylation profiles (methylomes) and presented the associations between the specific patterns of fungal DNA methylation and their DNMTs based on a phylogenetic tree of protein domain structures. For example, the main DNMTs in Basidiomycota, DNMT1 with RFD domain + DNMT5, contributing to CG methylation preference, were distinct from RID + Dim-2 in Ascomycota, resulting in a non-CG methylation preference. Lastly, we revealed that the dynamic methylation involved in fungal life stage changes was particularly low in mycelium and DNA methylation was preferentially located in transposable elements (TEs). This review comprehensively discussed fungal DNMTs and methylomes and their connection with fungal development and taxonomy to present the diverse usages of DNA methylation in fungal genomes.
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Affiliation(s)
- Yu-Shin Nai
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan.,Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Yu-Chun Huang
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan.,Bioinformatics Program, Taiwan International Graduate Program, National Taiwan University, Taipei, Taiwan.,Bioinformatics Program, Institute of Information Science, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan
| | - Ming-Ren Yen
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Pao-Yang Chen
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
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Rivière G. Epigenetic features in the oyster Crassostrea gigas suggestive of functionally relevant promoter DNA methylation in invertebrates. Front Physiol 2014; 5:129. [PMID: 24778620 PMCID: PMC3985014 DOI: 10.3389/fphys.2014.00129] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/14/2014] [Indexed: 12/22/2022] Open
Abstract
DNA methylation is evolutionarily conserved. Vertebrates exhibit high, widespread DNA methylation whereas invertebrate genomes are less methylated, predominantly within gene bodies. DNA methylation in invertebrates is associated with transcription level, alternative splicing, and genome evolution, but functional outcomes of DNA methylation remain poorly described in lophotrochozoans. Recent genome-wide approaches improve understanding in distant taxa such as molluscs, where the phylogenetic position, and life traits of Crassostrea gigas make this bivalve an ideal model to study the physiological and evolutionary implications of DNA methylation. We review the literature about DNA methylation in invertebrates and focus on DNA methylation features in the oyster. Indeed, though our MeDIP-seq results confirm predominant intragenic methylation, the profiles depend on the oyster's developmental and reproductive stage. We discuss the perspective that oyster DNA methylation could be biased toward the 5'-end of some genes, depending on physiological status, suggesting important functional outcomes of putative promoter methylation from cell differentiation during early development to sustained adaptation of the species to the environment.
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Affiliation(s)
- Guillaume Rivière
- Institute for Fundamental and Applied Biology, Normandy UniversityCaen, France
- UMR BOREA ‘Biologie des Organismes et Ecosystèmes Aquatiques’ Université de Caen Basse-Normandie, MNHN, UPMC, CNRS-7208, IRD-207Caen, France
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Cichewicz RH. Epigenome manipulation as a pathway to new natural product scaffolds and their congeners. Nat Prod Rep 2009; 27:11-22. [PMID: 20024091 DOI: 10.1039/b920860g] [Citation(s) in RCA: 196] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The covalent modification of chromatin is an important control mechanism used by fungi to modulate the transcription of genes involved in secondary metabolite production. To date, both molecular-based and chemical approaches targeting histone and DNA posttranslational processes have shown great potential for rationally directing the activation and/or suppression of natural-product-encoding gene clusters. In this Highlight, the organization of the fungal epigenome is summarized and strategies for manipulating chromatin-related targets are presented. Applications of these techniques are illustrated using several recently published accounts in which chemical-epigenetic methods and mutant studies were successfully employed for the de novo or enhanced production of structurally diverse fungal natural products (e.g., anthraquinones, cladochromes, lunalides, mycotoxins, and nygerones).
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Affiliation(s)
- Robert H Cichewicz
- Natural Products Discovery Group and Graduate Program in Ecology and Evolutionary Biology, Department of Chemistry and Biochemistry, 620 Parrington Oval, Room 208, University of Oklahoma, Norman, OK 73019, USA.
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Abstract
The fungus Phycomyces blakesleeanus has a relatively small genome, 30 megabases (Mb), with a low guanine and cytosine (G + C) content, 35%; the coding sequences cloned to date all have a G + C content of about 50%. In order to investigate the organization of the genome of this fungus, we have cloned and sequenced 251 DNA fragments. One hundred and twenty-six clones were obtained by digestion with MspI (target sequence 5'-CCGG-3') and 125 random clones were obtained by sonication. The average length of sequence obtained was about 200 base pairs (bp) and the total length was about 50 kilobases (kb). The G + C content is not homogeneous throughout the genome: sequences obtained after digestion with MspI have an average of 5% more G + C content than the random fragments, and are enriched in coding sequences. Fourteen MspI fragments show similarities to known proteins and 21 encode ribosomal RNA (rRNA). By contrast, only three of the random fragments are similar to known proteins and only one to a rRNA. We conclude that the Phycomyces genome is composed of G + C-rich genes surrounded by G + C-poor areas. Two clones have similarities to the transposase of the transposon Tc1 from Caenorhabditis elegans. This result suggests the presence of a high copy number of a Tc1-like transposable element in the Phycomyces genome. Another clone was similar to the transposon Tx1 from Xenopus laevis. A novel repetitive nt sequence has been characterized; about 5% of the total genome is a repetition of any of two consensus sequences of 31 bp named PrA1 and PrA2.
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Affiliation(s)
- J Avalos
- Department of Medicine, University of Cambridge School of Clinical Medicine, UK.
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Abstract
Mucorales constitute a group of fungi that, because of their growth characteristics, have been used extensively in the study of cell differentiation, cell morphogenesis, and stimuli perception. We have studied the role of polyamine metabolism in the development of different Mucorales, with emphasis on Mucor and Phycomyces species. It has been observed that previous to each differentiative step, the cellular levels of the most regulated enzyme of the pathway, ornithine decarboxylase (ODC), and polyamines suffer a noticeable increase. Addition of diaminobutanone (DAB), a competitive inhibitor of ODC, blocks all the corresponding differentiative phenomena. In its presence, germinating spores fail to produce germ tubes and keep growing isodiametrically; mycelia do not sporulate but continue their vegetative growth, and yeast cells are unable to engage in a dimorphic transition without alterations in their growth rate. This differential effect of the ODC inhibitor in growth and development is apparently due to the location of ODC in at least two different cell compartments, one of which is impermeable to the drug. Inhibition of development is counteracted by putrescine and more noticeably by 5-azacytidine (5AC), a strong inhibitor of DNA methylation. Methylation levels of DNA are high in spores, and they become reduced after germination. Demethylation is inhibited by hydroxyurea, which blocks DNA replication, and by DAB. The effect of the latter is reversed by 5AC. These results suggest a relationship between polyamines and DNA methylation. Analysis of metallothioneine gene (CUP) behavior and expression during spore germination has confirmed this hypothesis.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J Ruiz-Herrera
- Department of Genética y Biología Molecular, Unidad Irapuato, Centro de Investigación y de Estudios Avanzados del IPN, Gto., México
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