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Ekram MAE, Campbell M, Kose SH, Plet C, Hamilton R, Bijaksana S, Grice K, Russell J, Stevenson J, Vogel H, Coolen MJL. A 1 Ma sedimentary ancient DNA (sedaDNA) record of catchment vegetation changes and the developmental history of tropical Lake Towuti (Sulawesi, Indonesia). GEOBIOLOGY 2024; 22:e12599. [PMID: 38745401 DOI: 10.1111/gbi.12599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 12/24/2023] [Accepted: 04/18/2024] [Indexed: 05/16/2024]
Abstract
Studying past ecosystems from ancient environmental DNA preserved in lake sediments (sedaDNA) is a rapidly expanding field. This research has mainly involved Holocene sediments from lakes in cool climates, with little known about the suitability of sedaDNA to reconstruct substantially older ecosystems in the warm tropics. Here, we report the successful recovery of chloroplast trnL (UAA) sequences (trnL-P6 loop) from the sedimentary record of Lake Towuti (Sulawesi, Indonesia) to elucidate changes in regional tropical vegetation assemblages during the lake's Late Quaternary paleodepositional history. After the stringent removal of contaminants and sequence artifacts, taxonomic assignment of the remaining genuine trnL-P6 reads showed that native nitrogen-fixing legumes, C3 grasses, and shallow wetland vegetation (Alocasia) were most strongly associated with >1-million-year-old (>1 Ma) peats and silts (114-98.8 m composite depth; mcd), which were deposited in a landscape of active river channels, shallow lakes, and peat-swamps. A statistically significant shift toward partly submerged shoreline vegetation that was likely rooted in anoxic muddy soils (i.e., peatland forest trees and wetland C3 grasses (Oryzaceae) and nutrient-demanding aquatic herbs (presumably Oenanthe javanica)) occurred at 76 mcd (~0.8 Ma), ~0.2 Ma after the transition into a permanent lake. This wetland vegetation was most strongly associated with diatom ooze (46-37 mcd), thought to be deposited during maximum nutrient availability and primary productivity. Herbs (Brassicaceae), trees/shrubs (Fabaceae and Theaceae), and C3 grasses correlated with inorganic parameters, indicating increased drainage of ultramafic sediments and laterite soils from the lakes' catchment, particularly at times of inferred drying. Downcore variability in trnL-P6 from tropical forest trees (Toona), shady ground cover herbs (Zingiberaceae), and tree orchids (Luisia) most strongly correlated with sediments of a predominantly felsic signature considered to be originating from the catchment of the Loeha River draining into Lake Towuti during wetter climate conditions. However, the co-correlation with dry climate-adapted trees (i.e., Castanopsis or Lithocarpus) plus C4 grasses suggests that increased precipitation seasonality also contributed to the increased drainage of felsic Loeha River sediments. This multiproxy approach shows that despite elevated in situ temperatures, tropical lake sediments potentially comprise long-term archives of ancient environmental DNA for reconstructing ecosystems, which warrants further exploration.
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Affiliation(s)
- Md Akhtar-E Ekram
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
| | - Matthew Campbell
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
| | - Sureyya H Kose
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
| | - Chloe Plet
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
| | - Rebecca Hamilton
- ARC Centre of Excellence for Australian Biodiversity and Heritage and Archaeology and Natural History, School of Culture, History, and Language, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Satria Bijaksana
- Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, Indonesia
| | - Kliti Grice
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
| | - James Russell
- Department of Earth, Environmental, and Planetary Sciences (DEEPS), Brown University, Providence, Rhode Island, USA
| | - Janelle Stevenson
- ARC Centre of Excellence for Australian Biodiversity and Heritage and Archaeology and Natural History, School of Culture, History, and Language, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Hendrik Vogel
- Institute of Geological Sciences & Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Marco J L Coolen
- The Institute for Geoscience Research (TIGeR), Western Australia Organic and Isotope Geochemistry Centre (WAOIGC), School of Earth and Planetary Sciences (EPS), Curtin University, Bentley, Western Australia, Australia
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Wizenberg SB, Newburn LR, Pepinelli M, Conflitti IM, Richardson RT, Hoover SER, Currie RW, Giovenazzo P, Zayed A. Validating a multi-locus metabarcoding approach for characterizing mixed-pollen samples. PLANT METHODS 2023; 19:120. [PMID: 37925401 PMCID: PMC10625703 DOI: 10.1186/s13007-023-01097-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 10/21/2023] [Indexed: 11/06/2023]
Abstract
BACKGROUND The mutualistic interaction between entomophilous plants and pollinators is fundamental to the structure of most terrestrial ecosystems. The sensitive nature of this relationship has been disrupted by anthropogenic modifications to natural landscapes, warranting development of new methods for exploring this trophic interaction. Characterizing the composition of pollen collected by pollinators, e.g. Apis mellifera, is a common means of exploring this relationship, but traditional methods of microscopic pollen assessment are laborious and limited in their scope. The development of pollen metabarcoding as a method of rapidly characterizing the abundance and diversity of pollen within mixed samples presents a new frontier for this type of work, but metabarcoding may have limitations, and validation is warranted before any suite of primers can be confidently used in a research program. We set out to evaluate the utility of an integrative approach, using a set of established primers (ITS2 and rbcL) versus melissopalynological analysis for characterizing 27 mixed-pollen samples from agricultural sites across Canada. RESULTS Both individual markers performed well relative to melissopalynology at the family level with decreases in the strength of correlation and linear model fits at the genus level. Integrating data from both markers together via a multi-locus approach provided the best rank-based correlation between metagenetic and melissopalynological data at both the genus (ρ = 0.659; p < 0.001) and family level (ρ = 0.830; p < 0.001). Species accumulation curves indicated that, after controlling for sampling effort, melissopalynological characterization provides similar or higher species richness estimates than either marker. The higher number of plant species discovered via the metabarcoding approach simply reflects the vastly greater sampling effort in comparison to melissopalynology. CONCLUSIONS Pollen metabarcoding performed well at characterizing the composition of mixed pollen samples relative to a traditional melissopalynological approach. Limitations to the quantitative application of this method can be addressed by adopting a multi-locus approach that integrates information from multiple markers.
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Affiliation(s)
- Sydney B Wizenberg
- Department of Biology, York University, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
| | - Laura R Newburn
- Department of Biology, York University, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
| | - Mateus Pepinelli
- Department of Biology, York University, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
| | - Ida M Conflitti
- Department of Biology, York University, 4700 Keele St., Toronto, ON, M3J 1P3, Canada
| | - Rodney T Richardson
- Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, MD, 21613, USA
| | - Shelley E R Hoover
- Department of Biological Sciences, University of Lethbridge, 4401 University Drive W, Lethbridge, AB, T1K3M4, Canada
| | - Robert W Currie
- Department of Entomology, University of Manitoba, 12 Dafoe Road, Winnipeg, MB, R3T2N2, Canada
| | - Pierre Giovenazzo
- Département de Biologie, Université Laval, 2325 Rue de l'Université, Québec City, Québec, G1V0A6, Canada
| | - Amro Zayed
- Department of Biology, York University, 4700 Keele St., Toronto, ON, M3J 1P3, Canada.
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Kantak M, Batra P, Shende P. Integration of DNA barcoding and nanotechnology in drug delivery. Int J Biol Macromol 2023; 230:123262. [PMID: 36646350 DOI: 10.1016/j.ijbiomac.2023.123262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
In recent years' development in nanotechnology utilization of DNA barcodes with potential benefit of nanoparticulate system is a hallmark for novel advancement in healthcare, biomedical and research sector. Interplay of biological barcoding with nanodimensional system encompasses innovative technologies to offer unique advantages of ultra-sensitivity, error-free, accuracy with minimal label reagents, and less time consumption in comparison to conventional techniques like ELISA, PCR, culture media, electrophoresis. DNA barcoding systems used as universal novel tool for identification and multiplex structural detection of proteins, DNAs, toxins, allergens, and nucleic acids of humans, viruses, animals, bacteria, plants as well as personalized treatment in ovarian cancer, AIDS-related Kaposi sarcoma, breast cancer and cardiovascular diseases. Barcoding tools offer substantial attention in drug delivery, in-vivo screening, gene transport for theranostics, bioimaging, and nano-biosensors applications. This review article outlines the recent advances in nano-mediated DNA barcodes to explore various applications in detection of cancer markers, tumor cells, pathogens, allergens, as theranostics, biological sensors, and plant authentication. Furthermore, it summarizes the diverse newer technologies such as bio-barcode amplification (BBA), Profiling Relative Inhibition Simultaneously in Mixtures (PRISM) and CRISPR-Cas9 gene knockout and their applications as sensors for detections of antigens, allergens, and other specimens.
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Affiliation(s)
- Maithili Kantak
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India
| | - Priyanka Batra
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India
| | - Pravin Shende
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM'S NMIMS, V. L. Mehta Road, Vile Parle (W), Mumbai, India.
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Johnson MD, Freeland JR, Parducci L, Evans DM, Meyer RS, Molano-Flores B, Davis MA. Environmental DNA as an emerging tool in botanical research. AMERICAN JOURNAL OF BOTANY 2023; 110:e16120. [PMID: 36632660 DOI: 10.1002/ajb2.16120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/03/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Over the past quarter century, environmental DNA (eDNA) has been ascendant as a tool to detect, measure, and monitor biodiversity (species and communities), as a means of elucidating biological interaction networks, and as a window into understanding past patterns of biodiversity. However, only recently has the potential of eDNA been realized in the botanical world. Here we synthesize the state of eDNA applications in botanical systems with emphases on aquatic, ancient, contemporary sediment, and airborne systems, and focusing on both single-species approaches and multispecies community metabarcoding. Further, we describe how abiotic and biotic factors, taxonomic resolution, primer choice, spatiotemporal scales, and relative abundance influence the utilization and interpretation of airborne eDNA results. Lastly, we explore several areas and opportunities for further development of eDNA tools for plants, advancing our knowledge and understanding of the efficacy, utility, and cost-effectiveness, and ultimately facilitating increased adoption of eDNA analyses in botanical systems.
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Affiliation(s)
- Mark D Johnson
- Engineering Research and Development Center, Construction Engineering Research Laboratory (CERL), Champaign, IL, USA
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, IL, USA
| | - Joanna R Freeland
- Department of Biology, Trent University, 1600 West Bank Drive, Peterborough, ON, K9L 0G2, Canada
| | - Laura Parducci
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
- Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvagen 18D, SE-75236, Uppsala, Sweden
| | - Darren M Evans
- School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, UK
| | - Rachel S Meyer
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, CA, USA
| | - Brenda Molano-Flores
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, IL, USA
| | - Mark A Davis
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, IL, USA
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Everett R, Cribdon B. MetaDamage tool: Examining post-mortem damage in sedaDNA on a metagenomic scale. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2022.888421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The use of metagenomic datasets to support ancient sedimentary DNA (sedaDNA) for paleoecological reconstruction has been demonstrated to be a powerful tool to understand multi-organism responses to climatic shifts and events. Authentication remains integral to the ancient DNA discipline, and this extends to sedaDNA analysis. Furthermore, distinguishing authentic sedaDNA from contamination or modern material also allows for a better understanding of broader questions in sedaDNA research, such as formation processes, source and catchment, and post-depositional processes. Existing tools for the detection of damage signals are designed for single-taxon input, require a priori organism specification, and require a significant number of input sequences to establish a signal. It is therefore often difficult to identify an established cytosine deamination rate consistent with ancient DNA across a sediment sample. In this study, we present MetaDamage, a tool that examines cytosine deamination on a metagenomic (all organisms) scale for multiple previously undetermined taxa and can produce a damage profile based on a few hundred reads. We outline the development and testing of the MetaDamage tool using both authentic sedaDNA sequences and simulated data to demonstrate the resolution in which MetaDamage can identify deamination levels consistent with the presence of ancient DNA. The MetaDamage tool offers a method for the initial assessment of the presence of sedaDNA and a better understanding of key questions of preservation for paleoecological reconstruction.
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Osman OA, Andersson J, Martin-Sanchez PM, Eiler A. National eDNA-based monitoring of Batrachochytrium dendrobatidis and amphibian species in Norway. METABARCODING AND METAGENOMICS 2022. [DOI: 10.3897/mbmg.6.85199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Freshwaters represent the most threatened environments with regard to biodiversity loss and, therefore, there is a need for national monitoring programs to effectively document species distribution and evaluate potential risks for vulnerable species. The monitoring of species for effective management practices is, however, challenged by insufficient data acquisition when using traditional methods. Here we present the application of environmental DNA (eDNA) metabarcoding of amphibians in combination with quantitative PCR (qPCR) assays for an invasive pathogenic chytrid species (Batrachochytrium dendrobatidis -Bd), a potential threat to endemic and endangered amphibian species. Statistical comparison of amphibian species detection using either traditional or eDNA-based approaches showed weak correspondence. By tracking the distribution of Bd over three years, we concluded that the risk for amphibian extinction is low since Bd was only detected at five sites where multiple amphibians were present over the sampled years. Our results show that eDNA-based detection can be used for simultaneous monitoring of amphibian diversity and the presence of amphibian pathogens at the national level in order to assess potential species extinction risks and establish effective management practices. As such our study represents suggestions for a national monitoring program based on eDNA.
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A Critical Assessment of the Congruency between Environmental DNA and Palaeoecology for the Biodiversity Monitoring and Palaeoenvironmental Reconstruction. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19159445. [PMID: 35954801 PMCID: PMC9368151 DOI: 10.3390/ijerph19159445] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 02/01/2023]
Abstract
The present study suggests that standardized methodology, careful site selection, and stratigraphy are essential for investigating ancient ecosystems in order to evaluate biodiversity and DNA-based time series. Based on specific keywords, this investigation reviewed 146 publications using the SCOPUS, Web of Science (WoS), PUBMED, and Google Scholar databases. Results indicate that environmental deoxyribose nucleic acid (eDNA) can be pivotal for assessing and conserving ecosystems. Our review revealed that in the last 12 years (January 2008–July 2021), 63% of the studies based on eDNA have been reported from aquatic ecosystems, 25% from marine habitats, and 12% from terrestrial environments. Out of studies conducted in aquatic systems using the environmental DNA (eDNA) technique, 63% of the investigations have been reported from freshwater ecosystems, with an utmost focus on fish diversity (40%). Further analysis of the literature reveals that during the same period, 24% of the investigations using the environmental DNA technique were carried out on invertebrates, 8% on mammals, 7% on plants, 6% on reptiles, and 5% on birds. The results obtained clearly indicate that the environmental DNA technique has a clear-cut edge over other biodiversity monitoring methods. Furthermore, we also found that eDNA, in conjunction with different dating techniques, can provide better insight into deciphering eco-evolutionary feedback. Therefore, an attempt has been made to offer extensive information on the application of dating methods for different taxa present in diverse ecosystems. Last, we provide suggestions and elucidations on how to overcome the caveats and delineate some of the research avenues that will likely shape this field in the near future. This paper aims to identify the gaps in environmental DNA (eDNA) investigations to help researchers, ecologists, and decision-makers to develop a holistic understanding of environmental DNA (eDNA) and its utility as a palaeoenvironmental contrivance.
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Messager E, Giguet-Covex C, Doyen E, Etienne D, Gielly L, Sabatier P, Banjan M, Develle AL, Didier J, Poulenard J, Julien A, Arnaud F. Two Millennia of Complexity and Variability in a Perialpine Socioecological System (Savoie, France): The Contribution of Palynology and sedaDNA Analysis. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.866781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Over the last two millennia, European Alpine ecosystems have experienced major changes in response to the important, yet fluctuating, impact of human activities. This study aims to reconstruct the environmental history of the last 1800 years on the western edge of the Alps by analyzing sediments from Lake Aiguebelette, a large lake located in the perialpine area. We have combined analyses of pollen and other palynomorphs, such as coprophilous fungal spores, together with sedimentary DNA (from plants and mammals) in order to reconstruct both vegetation and land-use histories. A sedimentological and geochemical analysis was also conducted in order to gain an understanding of changes in erosion dynamics in response to landscape modifications that were influenced by climate and human activities. This work highlights alternating phases of anthropization and agricultural abandonment allowing forest recovery. While pollen reflects the major phases of regional deforestation and afforestation related to the dynamic of farming activities, plant DNA provides precise information on the plants cultivated in fields, orchards and vegetable gardens over the past centuries. The combination of mammal DNA and coprophilous fungal spores completes this work by documenting the history of pastoral practices.
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Johnson MD, Fokar M, Cox RD, Barnes MA. Airborne environmental DNA metabarcoding detects more diversity, with less sampling effort, than a traditional plant community survey. BMC Ecol Evol 2021; 21:218. [PMID: 34872490 PMCID: PMC8647488 DOI: 10.1186/s12862-021-01947-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/24/2021] [Indexed: 01/04/2023] Open
Abstract
Background Airborne environmental DNA (eDNA) research is an emerging field that focuses on the detection of species from their genetic remnants in the air. The majority of studies into airborne eDNA of plants has until now either focused on single species detection, specifically only pollen, or human health impacts, with no previous studies surveying an entire plant community through metabarcoding. We therefore conducted an airborne eDNA metabarcoding survey and compared the results to a traditional plant community survey. Results Over the course of a year, we conducted two traditional transect-based visual plant surveys alongside an airborne eDNA sampling campaign on a short-grass rangeland. We found that airborne eDNA detected more species than the traditional surveying method, although the types of species detected varied based on the method used. Airborne eDNA detected more grasses and forbs with less showy flowers, while the traditional method detected fewer grasses but also detected rarer forbs with large showy flowers. Additionally, we found the airborne eDNA metabarcoding survey required less sampling effort in terms of the time needed to conduct a survey and was able to detect more invasive species than the traditional method. Conclusions Overall, we have demonstrated that airborne eDNA can act as a sensitive and efficient plant community surveying method. Airborne eDNA surveillance has the potential to revolutionize the way plant communities are monitored in general, track changes in plant communities due to climate change and disturbances, and assist with the monitoring of invasive and endangered species. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-021-01947-x.
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Affiliation(s)
- Mark D Johnson
- Department of Natural Resources Management, Texas Tech University, Lubbock, TX, 79409, USA.
| | - Mohamed Fokar
- Center for Biotechnology & Genomics, Texas Tech University, Lubbock, TX, 79409, USA
| | - Robert D Cox
- Department of Natural Resources Management, Texas Tech University, Lubbock, TX, 79409, USA
| | - Matthew A Barnes
- Department of Natural Resources Management, Texas Tech University, Lubbock, TX, 79409, USA
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Foster NR, van Dijk KJ, Biffin E, Young JM, Thomson VA, Gillanders BM, Jones AR, Waycott M. A Multi-Gene Region Targeted Capture Approach to Detect Plant DNA in Environmental Samples: A Case Study From Coastal Environments. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.735744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Metabarcoding of plant DNA recovered from environmental samples, termed environmental DNA (eDNA), has been used to detect invasive species, track biodiversity changes, and reconstruct past ecosystems. The P6 loop of the trnL intron is the most widely utilised gene region for metabarcoding plants due to the short fragment length and subsequent ease of recovery from degraded DNA, which is characteristic of environmental samples. However, the taxonomic resolution for this gene region is limited, often precluding species level identification. Additionally, targeting gene regions using universal primers can bias results as some taxa will amplify more effectively than others. To increase the ability of DNA metabarcoding to better resolve flowering plant species (angiosperms) within environmental samples, and reduce bias in amplification, we developed a multi-gene targeted capture method that simultaneously targets 20 chloroplast gene regions in a single assay across all flowering plant species. Using this approach, we effectively recovered multiple chloroplast gene regions for three species within artificial DNA mixtures down to 0.001 ng/μL of DNA. We tested the detection level of this approach, successfully recovering target genes for 10 flowering plant species. Finally, we applied this approach to sediment samples containing unknown compositions of eDNA and confidently detected plant species that were later verified with observation data. Targeting multiple chloroplast gene regions in environmental samples, enabled species-level information to be recovered from complex DNA mixtures. Thus, the method developed here, confers an improved level of data on community composition, which can be used to better understand flowering plant assemblages in environmental samples.
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Meucci S, Schulte L, Zimmermann HH, Stoof‐Leichsenring KR, Epp L, Bronken Eidesen P, Herzschuh U. Holocene chloroplast genetic variation of shrubs ( Alnus alnobetula, Betula nana, Salix sp.) at the siberian tundra-taiga ecotone inferred from modern chloroplast genome assembly and sedimentary ancient DNA analyses. Ecol Evol 2021; 11:2173-2193. [PMID: 33717447 PMCID: PMC7920767 DOI: 10.1002/ece3.7183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/11/2022] Open
Abstract
Climate warming alters plant composition and population dynamics of arctic ecosystems. In particular, an increase in relative abundance and cover of deciduous shrub species (shrubification) has been recorded. We inferred genetic variation of common shrub species (Alnus alnobetula, Betula nana, Salix sp.) through time. Chloroplast genomes were assembled from modern plants (n = 15) from the Siberian forest-tundra ecotone. Sedimentary ancient DNA (sedaDNA; n = 4) was retrieved from a lake on the southern Taymyr Peninsula and analyzed by metagenomics shotgun sequencing and a hybridization capture approach. For A. alnobetula, analyses of modern DNA showed low intraspecies genetic variability and a clear geographical structure in haplotype distribution. In contrast, B. nana showed high intraspecies genetic diversity and weak geographical structure. Analyses of sedaDNA revealed a decreasing relative abundance of Alnus since 5,400 cal yr BP, whereas Betula and Salix increased. A comparison between genetic variations identified in modern DNA and sedaDNA showed that Alnus variants were maintained over the last 6,700 years in the Taymyr region. In accordance with modern individuals, the variants retrieved from Betula and Salix sedaDNA showed higher genetic diversity. The success of the hybridization capture in retrieving diverged sequences demonstrates the high potential for future studies of plant biodiversity as well as specific genetic variation on ancient DNA from lake sediments. Overall, our results suggest that shrubification has species-specific trajectories. The low genetic diversity in A. alnobetula suggests a local population recruitment and growth response of the already present communities, whereas the higher genetic variability and lack of geographical structure in B. nana may indicate a recruitment from different populations due to more efficient seed dispersal, increasing the genetic connectivity over long distances.
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Affiliation(s)
- Stefano Meucci
- Polar Terrestrial Environmental Systems Research GroupAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchPotsdamGermany
- Institute of Biochemistry and BiologyUniversity of PotsdamPotsdamGermany
| | - Luise Schulte
- Polar Terrestrial Environmental Systems Research GroupAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchPotsdamGermany
- Institute of Biochemistry and BiologyUniversity of PotsdamPotsdamGermany
| | - Heike H. Zimmermann
- Polar Terrestrial Environmental Systems Research GroupAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchPotsdamGermany
| | - Kathleen R. Stoof‐Leichsenring
- Polar Terrestrial Environmental Systems Research GroupAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchPotsdamGermany
| | - Laura Epp
- Department of BiologyUniversity of KonstanzKonstanzGermany
| | | | - Ulrike Herzschuh
- Polar Terrestrial Environmental Systems Research GroupAlfred Wegener Institute Helmholtz Centre for Polar and Marine ResearchPotsdamGermany
- Institute of Biochemistry and BiologyUniversity of PotsdamPotsdamGermany
- Institute of Environmental Sciences and GeographyUniversity of PotsdamPotsdamGermany
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Rucińska A, Olszak M, Świerszcz S, Nobis M, Zubek S, Kusza G, Boczkowska M, Nowak A. Looking for Hidden Enemies of Metabarcoding: Species Composition, Habitat and Management Can Strongly Influence DNA Extraction while Examining Grassland Communities. Biomolecules 2021; 11:318. [PMID: 33669773 PMCID: PMC7921978 DOI: 10.3390/biom11020318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 12/02/2022] Open
Abstract
Despite the raising preoccupation, the critical question of how the plant community is composed belowground still remains unresolved, particularly for the conservation priority types of vegetation. The usefulness of metabarcoding analysis of the belowground parts of the plant community is subjected to a considerable bias, that often impedes detection of all species in a sample due to insufficient DNA quality or quantity. In the presented study we have attempted to find environmental factors that determine the amount and quality of DNA extracted from total plant tissue from above- and belowground samples (1000 and 10,000 cm2). We analyzed the influence of land use intensity, soil properties, species composition, and season on DNA extraction. The most important factors for DNA quality were vegetation type, soil conductometry (EC), and soil pH for the belowground samples. The species that significantly decreased the DNA quality were Calamagrostis epigejos, Coronilla varia, and Holcus lanatus. For the aboveground part of the vegetation, the season, management intensity, and certain species-with the most prominent being Centaurea rhenana and Cirsium canum-have the highest influence. Additionally, we found that sample size, soil granulation, MgO, organic C, K2O, and total soil N content are important for DNA extraction effectiveness. Both low EC and pH reduce significantly the yield and quality of DNA. Identifying the potential inhibitors of DNA isolation and predicting difficulties of sampling the vegetation plots for metabarcoding analysis will help to optimize the universal, low-cost multi-stage DNA extraction procedure in molecular ecology studies.
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Affiliation(s)
- Anna Rucińska
- Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-976 Warszawa, Poland; (A.R.); (M.O.); (M.B.); (A.N.)
| | - Marcin Olszak
- Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-976 Warszawa, Poland; (A.R.); (M.O.); (M.B.); (A.N.)
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5A, 02-106 Warszawa, Poland
| | - Sebastian Świerszcz
- Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-976 Warszawa, Poland; (A.R.); (M.O.); (M.B.); (A.N.)
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
| | - Marcin Nobis
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland; (M.N.); (S.Z.)
- Research Laboratory ‘Herbarium’, National Research Tomsk State University, 634050 Tomsk, Russia
| | - Szymon Zubek
- Institute of Botany, Faculty of Biology, Jagiellonian University, Gronostajowa 3, 30-387 Kraków, Poland; (M.N.); (S.Z.)
| | - Grzegorz Kusza
- Institute of Biology, University of Opole, Oleska 22, 45-052 Opole, Poland;
| | - Maja Boczkowska
- Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-976 Warszawa, Poland; (A.R.); (M.O.); (M.B.); (A.N.)
- National Centre for Plant Genetic Resources, Plant Breeding and Acclimatization Institute (IHAR)–National Research Institute, Radzików, 05-870 Błonie, Poland
| | - Arkadiusz Nowak
- Polish Academy of Sciences Botanical Garden, Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-976 Warszawa, Poland; (A.R.); (M.O.); (M.B.); (A.N.)
- Institute of Biology, University of Opole, Oleska 22, 45-052 Opole, Poland;
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13
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Lake Sedimentary DNA Research on Past Terrestrial and Aquatic Biodiversity: Overview and Recommendations. QUATERNARY 2021. [DOI: 10.3390/quat4010006] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The use of lake sedimentary DNA to track the long-term changes in both terrestrial and aquatic biota is a rapidly advancing field in paleoecological research. Although largely applied nowadays, knowledge gaps remain in this field and there is therefore still research to be conducted to ensure the reliability of the sedimentary DNA signal. Building on the most recent literature and seven original case studies, we synthesize the state-of-the-art analytical procedures for effective sampling, extraction, amplification, quantification and/or generation of DNA inventories from sedimentary ancient DNA (sedaDNA) via high-throughput sequencing technologies. We provide recommendations based on current knowledge and best practises.
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14
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Giguet-Covex C, Ficetola GF, Walsh K, Poulenard J, Bajard M, Fouinat L, Sabatier P, Gielly L, Messager E, Develle AL, David F, Taberlet P, Brisset E, Guiter F, Sinet R, Arnaud F. New insights on lake sediment DNA from the catchment: importance of taphonomic and analytical issues on the record quality. Sci Rep 2019; 9:14676. [PMID: 31604959 PMCID: PMC6789010 DOI: 10.1038/s41598-019-50339-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 08/12/2019] [Indexed: 11/09/2022] Open
Abstract
Over the last decade, an increasing number of studies have used lake sediment DNA to trace past landscape changes, agricultural activities or human presence. However, the processes responsible for lake sediment formation and sediment properties might affect DNA records via taphonomic and analytical processes. It is crucial to understand these processes to ensure reliable interpretations for “palaeo” studies. Here, we combined plant and mammal DNA metabarcoding analyses with sedimentological and geochemical analyses from three lake-catchment systems that are characterised by different erosion dynamics. The new insights derived from this approach elucidate and assess issues relating to DNA sources and transfer processes. The sources of eroded materials strongly affect the “catchment-DNA” concentration in the sediments. For instance, erosion of upper organic and organo-mineral soil horizons provides a higher amount of plant DNA in lake sediments than deep horizons, bare soils or glacial flours. Moreover, high erosion rates, along with a well-developed hydrographic network, are proposed as factors positively affecting the representation of the catchment flora. The development of open and agricultural landscapes, which favour the erosion, could thus bias the reconstructed landscape trajectory but help the record of these human activities. Regarding domestic animals, pastoral practices and animal behaviour might affect their DNA record because they control the type of source of DNA (“point” vs. “diffuse”).
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Affiliation(s)
- C Giguet-Covex
- BioArch-Department of Archaeology, University of York, York, YO10 5DD, UK. .,EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France.
| | - G F Ficetola
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000, Grenoble, France.,Department of Environmental Science and Policy, Università degli Studi di Milano, Via Celoria 26, 20133, Milano, Italy
| | - K Walsh
- BioArch-Department of Archaeology, University of York, York, YO10 5DD, UK
| | - J Poulenard
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - M Bajard
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - L Fouinat
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - P Sabatier
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - L Gielly
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000, Grenoble, France
| | - E Messager
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - A L Develle
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
| | - F David
- CEREGE, UMR CNRS 7330, IRD 161-Marseille Université, Technopôle de l'Arbois Méditerranée, BP 80, 13545, Aix en Provence cedex 4, France
| | - P Taberlet
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000, Grenoble, France
| | - E Brisset
- Aix-Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Aix-en-Provence, France.,Institut Català de Paleoecologia Humana i Evolució Social (IPHES), Tarragona, Spain.,Àrea de Prehistòria, Universitat Rovira i Virgili, Tarragona, Spain
| | - F Guiter
- Aix-Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Aix-en-Provence, France
| | - R Sinet
- Aix-Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Aix-en-Provence, France
| | - F Arnaud
- EDYTEM, UMR 5204 CNRS, Univ. Savoie Mont Blanc, Pôle Montagne, 73376, Le Bourget du Lac, France
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15
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Cristescu ME, Hebert PD. Uses and Misuses of Environmental DNA in Biodiversity Science and Conservation. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2018. [DOI: 10.1146/annurev-ecolsys-110617-062306] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The study of environmental DNA (eDNA) has the potential to revolutionize biodiversity science and conservation action by enabling the census of species on a global scale in near real time. To achieve this promise, technical challenges must be resolved. In this review, we explore the main uses of eDNA as well as the complexities introduced by its misuse. Current eDNA methods require refinement and improved calibration and validation along the entire workflow to lessen false positives/negatives. Moreover, there is great need for a better understanding of the “natural history” of eDNA—its origins, state, lifetime, and transportation—and for more detailed insights concerning the physical and ecological limitations of eDNA use. Although eDNA analysis can provide powerful information, particularly in freshwater and marine environments, its impact is likely to be less significant in terrestrial settings. The broad adoption of eDNA tools in conservation will largely depend on addressing current uncertainties in data interpretation.
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Affiliation(s)
| | - Paul D.N. Hebert
- Centre for Biodiversity Genomics and Department of Integrative Biology, University of Guelph, Ontario N1G 2W1, Canada
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16
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Kisand V, Talas L, Kisand A, Stivrins N, Reitalu T, Alliksaar T, Vassiljev J, Liiv M, Heinsalu A, Seppä H, Veski S. From microbial eukaryotes to metazoan vertebrates: Wide spectrum paleo-diversity in sedimentary ancient DNA over the last ~14,500 years. GEOBIOLOGY 2018; 16:628-639. [PMID: 30035382 DOI: 10.1111/gbi.12307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 06/09/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Most studies that utilize ancient DNA have focused on specific groups of organisms or even single species. Instead, the whole biodiversity of eukaryotes can be described using universal phylogenetic marker genes found within well-preserved sediment cores that cover the post-glacial period. Sedimentary ancient DNA samples from Lake Lielais Svētiņu, eastern Latvia, at a core depth of 1,050 cm in ~150 year intervals were used to determine phylotaxonomy in domain Eukaryota. Phylotaxonomic affiliation of >1,200 eukaryotic phylotypes revealed high richness in all major eukaryotic groups-Alveolata, Stramenopiles, Cercozoa, Chlorophyta, Charophyta, Nucletmycea, and Holozoa. The share of organisms that originate from terrestrial ecosystems was about one third, of which the most abundant molecular operational taxonomic units were Fungi and tracheal/vascular plants, which demonstrates the usefulness of using lake sediments to reconstruct the terrestrial paleoecosystems that surround them. Phylotypes that originate from the lake ecosystem belonged to various planktonic organisms; phyto-, proto,- and macrozooplankton, and vascular aquatic plants. We observed greater richness of several planktonic organisms that can be associated with higher trophic status during the warm climate period between 4,000 and 8,000 years ago and an increase in eukaryotic richness possibly associated with moderate human impact over the last 2,000 years.
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Affiliation(s)
- Veljo Kisand
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Liisi Talas
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Anu Kisand
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Normunds Stivrins
- Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland
- Department of Geography, Faculty of Geography and Earth Sciences, University of Latvia, Riga, Latvia
| | - Triin Reitalu
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
| | - Tiiu Alliksaar
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
| | - Jüri Vassiljev
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
| | - Merlin Liiv
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
| | - Atko Heinsalu
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
| | - Heikki Seppä
- Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland
| | - Siim Veski
- Department of Geology, Tallinn University of Technology, Tallinn, Estonia
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17
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Zarrillo S, Gaikwad N, Lanaud C, Powis T, Viot C, Lesur I, Fouet O, Argout X, Guichoux E, Salin F, Solorzano RL, Bouchez O, Vignes H, Severts P, Hurtado J, Yepez A, Grivetti L, Blake M, Valdez F. The use and domestication of Theobroma cacao during the mid-Holocene in the upper Amazon. Nat Ecol Evol 2018; 2:1879-1888. [PMID: 30374172 DOI: 10.1038/s41559-018-0697-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 09/14/2018] [Indexed: 11/09/2022]
Abstract
Cacao (Theobroma cacao L.) is an important economic crop, yet studies of its domestication history and early uses are limited. Traditionally, cacao is thought to have been first domesticated in Mesoamerica. However, genomic research shows that T. cacao's greatest diversity is in the upper Amazon region of northwest South America, pointing to this region as its centre of origin. Here, we report cacao use identified by three independent lines of archaeological evidence-cacao starch grains, absorbed theobromine residues and ancient DNA-dating from approximately 5,300 years ago recovered from the Santa Ana-La Florida (SALF) site in southeast Ecuador. To our knowledge, these findings constitute the earliest evidence of T. cacao use in the Americas and the first unequivocal archaeological example of its pre-Columbian use in South America. They also reveal the upper Amazon region as the oldest centre of cacao domestication yet identified.
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Affiliation(s)
- Sonia Zarrillo
- Department of Anthropology and Archaeology, University of Calgary, Calgary, Alberta, Canada.,Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nilesh Gaikwad
- Department of Nutrition and Department of Environmental Toxicology, West Coast Metabolomics Center, University of California, Davis, CA, USA.,Gaikwad Steroidomics Laboratory, Davis, CA, USA
| | - Claire Lanaud
- CIRAD, UMR AGAP, Montpellier, France.,AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Terry Powis
- Department of Geography and Anthropology, Kennesaw State University, Kennesaw, GA, USA
| | - Christopher Viot
- CIRAD, UMR AGAP, Montpellier, France.,AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Isabelle Lesur
- INRA-UMR BIOGECO, Cestas, France.,HelixVenture, Mérignac, France
| | - Olivier Fouet
- CIRAD, UMR AGAP, Montpellier, France.,AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Xavier Argout
- CIRAD, UMR AGAP, Montpellier, France.,AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | | | | | - Rey Loor Solorzano
- Instituto Nacional de Investigación Agropecuaria Estación Experimental Tropical Pichilingue, Quevedo, Provincia de Los Ríos, Ecuador
| | | | - Hélène Vignes
- CIRAD, UMR AGAP, Montpellier, France.,AGAP, University Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | | | - Julio Hurtado
- Ministerio de Cultura y Patrimonio, Ecuador/IRD, Quito, Ecuador
| | - Alexandra Yepez
- Ministerio de Cultura y Patrimonio, Ecuador/IRD, Quito, Ecuador
| | - Louis Grivetti
- Department of Nutrition, University of California, Davis, CA, USA
| | - Michael Blake
- Department of Anthropology, University of British Columbia, Vancouver, British Columbia, Canada.
| | - Francisco Valdez
- Institut de Recherche pour le Développement, UMR 208 PALOC, MNHN-IRD, Marseille, France
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18
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Environmental DNA (eDNA): A Promising Biological Survey Tool for Aquatic Species Detection. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s12595-018-0268-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Tse TJ, Doig LE, Tang S, Zhang X, Sun W, Wiseman SB, Feng CX, Liu H, Giesy JP, Hecker M, Jones PD. Combining High-Throughput Sequencing of sedaDNA and Traditional Paleolimnological Techniques To Infer Historical Trends in Cyanobacterial Communities. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:6842-6853. [PMID: 29782156 DOI: 10.1021/acs.est.7b06386] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Freshwaters worldwide are under increasing pressure from anthropogenic activities and changing climate. Unfortunately, many inland waters lack sufficient long-term monitoring to assess environmental trends. Analysis of sedimentary ancient DNA ( sedaDNA) is emerging as a means to reconstruct the past occurrence of microbial communities of inland waters. The purpose of this study was to assess a combination of high-throughput sequencing (16S rRNA) of sedaDNA and traditional paleolimnological analyses to explore multidecadal relationships among cyanobacterial community composition, the potential for cyanotoxin production, and paleoenvironmental proxies. DNA was extracted from two sediment cores collected from a northern Canadian Great Plains reservoir. Diversity indices illustrated significant community-level changes since reservoir formation. Furthermore, higher relative abundances in more recent years were observed for potentially toxic cyanobacterial genera including Dolichospermum. Correlation-based network analysis revealed this trend significantly and positively correlated to abundances of the microcystin synthetase gene ( mcyA) and other paleoproxies (nutrients, pigments, stanols, sterols, and certain diatom species), demonstrating synchrony between molecular and more standard proxies. These findings demonstrate a novel approach to infer long-term dynamics of cyanobacterial diversity in inland waters and highlight the power of high-throughput sequencing to reconstruct trends in environmental quality and inform lake and reservoir management and monitoring program design.
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Affiliation(s)
- Timothy J Tse
- Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
- Global Institute for Water Security , University of Saskatchewan , Saskatoon , Saskatchewan S7N 3H5 , Canada
| | - Lorne E Doig
- Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
- Global Institute for Water Security , University of Saskatchewan , Saskatoon , Saskatchewan S7N 3H5 , Canada
| | - Song Tang
- School of Environment and Sustainability , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5C3 , Canada
- National Institute of Environmental Health , Chinese Center for Disease Control and Prevention , No. 7 Panjiayuan Nanli , Chaoyang District, Beijing 100021 , China
| | - Xiaohui Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - Weimin Sun
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management , Guangdong Institute of Eco-environment Science & Technology , Guangzhou , Guangdong 510650 , China
| | - Steve B Wiseman
- Department of Biological Sciences , University of Lethbridge , Lethbridge , AB T1K 3M4 , Canada
| | - Cindy Xin Feng
- School of Public Health , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5E5 , Canada
| | - Hongling Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - John P Giesy
- Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
- Global Institute for Water Security , University of Saskatchewan , Saskatoon , Saskatchewan S7N 3H5 , Canada
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing , Jiangsu 210023 , China
- Zoology Department, Center for Integrative Toxicology , Michigan State University , East Lansing , Michigan 48824 , United States
- School of Biological Sciences , University of Hong Kong , Hong Kong , SAR 999077 , China
| | - Markus Hecker
- Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
- Global Institute for Water Security , University of Saskatchewan , Saskatoon , Saskatchewan S7N 3H5 , Canada
- School of Environment and Sustainability , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5C3 , Canada
| | - Paul D Jones
- Toxicology Centre , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5B3 , Canada
- Global Institute for Water Security , University of Saskatchewan , Saskatoon , Saskatchewan S7N 3H5 , Canada
- School of Environment and Sustainability , University of Saskatchewan , Saskatoon , Saskatchewan S7N 5C3 , Canada
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20
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Alsos IG, Lammers Y, Yoccoz NG, Jørgensen T, Sjögren P, Gielly L, Edwards ME. Plant DNA metabarcoding of lake sediments: How does it represent the contemporary vegetation. PLoS One 2018; 13:e0195403. [PMID: 29664954 PMCID: PMC5903670 DOI: 10.1371/journal.pone.0195403] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 03/21/2018] [Indexed: 11/18/2022] Open
Abstract
Metabarcoding of lake sediments have been shown to reveal current and past biodiversity, but little is known about the degree to which taxa growing in the vegetation are represented in environmental DNA (eDNA) records. We analysed composition of lake and catchment vegetation and vascular plant eDNA at 11 lakes in northern Norway. Out of 489 records of taxa growing within 2 m from the lake shore, 17–49% (mean 31%) of the identifiable taxa recorded were detected with eDNA. Of the 217 eDNA records of 47 plant taxa in the 11 lakes, 73% and 12% matched taxa recorded in vegetation surveys within 2 m and up to about 50 m away from the lakeshore, respectively, whereas 16% were not recorded in the vegetation surveys of the same lake. The latter include taxa likely overlooked in the vegetation surveys or growing outside the survey area. The percentages detected were 61, 47, 25, and 15 for dominant, common, scattered, and rare taxa, respectively. Similar numbers for aquatic plants were 88, 88, 33 and 62%, respectively. Detection rate and taxonomic resolution varied among plant families and functional groups with good detection of e.g. Ericaceae, Roseaceae, deciduous trees, ferns, club mosses and aquatics. The representation of terrestrial taxa in eDNA depends on both their distance from the sampling site and their abundance and is sufficient for recording vegetation types. For aquatic vegetation, eDNA may be comparable with, or even superior to, in-lake vegetation surveys and may therefore be used as an tool for biomonitoring. For reconstruction of terrestrial vegetation, technical improvements and more intensive sampling is needed to detect a higher proportion of rare taxa although DNA of some taxa may never reach the lake sediments due to taphonomical constrains. Nevertheless, eDNA performs similar to conventional methods of pollen and macrofossil analyses and may therefore be an important tool for reconstruction of past vegetation.
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Affiliation(s)
- Inger Greve Alsos
- Tromsø Museum, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
- * E-mail:
| | - Youri Lammers
- Tromsø Museum, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
| | - Nigel Giles Yoccoz
- Department of Arctic and Marine Biology, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
| | - Tina Jørgensen
- Tromsø Museum, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
| | - Per Sjögren
- Tromsø Museum, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
| | - Ludovic Gielly
- University Grenoble Alpes, LECA, Grenoble, France
- CNRS, LECA, Grenoble, France
| | - Mary E. Edwards
- Tromsø Museum, University of Tromsø –The Arctic University of Norway, Tromsø, Norway
- Geography and Environment, University of Southampton, Highfield, Southampton, United Kingdom
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21
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Molecular-Assisted Pollen Grain Analysis Reveals Spatiotemporal Origin of Long-Distance Migrants of a Noctuid Moth. Int J Mol Sci 2018; 19:ijms19020567. [PMID: 29438348 PMCID: PMC5855789 DOI: 10.3390/ijms19020567] [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] [Received: 01/18/2018] [Revised: 02/04/2018] [Accepted: 02/08/2018] [Indexed: 11/30/2022] Open
Abstract
Pollen grains are regularly used as markers to determine an insect’s movement patterns or host (plant) feeding behavior, yet conventional morphology-based pollen grain analysis (or palynology) encounters a number of important limitations. In the present study, we combine conventional analytical approaches with DNA meta-barcoding to identify pollen grains attached to migrating adults of the turnip moth, Agrotis segetum (Lepidoptera: Noctuidae) in Northeast China. More specifically, pollen grains were dislodged from 2566 A. segetum long-distance migrants captured on Beihuang Island (Bohai Sea) and identified to many (plant) species level. Pollen belonged to 26 families of plants, including Fagaceae, Oleaceae, Leguminosae, Asteraceae, Pinaceae and Rosaceae, including common species such as Citrus sinensis, Olea europaea, Ligustrum lucidum, Robinia pseudoacacia, Castanopsis echinocarpa, Melia azedarach and Castanea henryi. As the above plants are indigenous to southern climes, we deduce that A. segetum forage on plants in those locales prior to engaging in northward spring migration. Our work validates the use of DNA-assisted approaches in lepidopteran pollination ecology research and provides unique and valuable information on the adult feeding range and geographical origin of A. segetum. Our findings also enable targeted (area-wide) pest management interventions or guide the future isolation of volatile attractants.
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22
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Leonardi M, Librado P, Der Sarkissian C, Schubert M, Alfarhan AH, Alquraishi SA, Al-Rasheid KAS, Gamba C, Willerslev E, Orlando L. Evolutionary Patterns and Processes: Lessons from Ancient DNA. Syst Biol 2018; 66:e1-e29. [PMID: 28173586 PMCID: PMC5410953 DOI: 10.1093/sysbio/syw059] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 06/04/2016] [Accepted: 06/06/2016] [Indexed: 12/02/2022] Open
Abstract
Ever since its emergence in 1984, the field of ancient DNA has struggled to overcome the challenges related to the decay of DNA molecules in the fossil record. With the recent development of high-throughput DNA sequencing technologies and molecular techniques tailored to ultra-damaged templates, it has now come of age, merging together approaches in phylogenomics, population genomics, epigenomics, and metagenomics. Leveraging on complete temporal sample series, ancient DNA provides direct access to the most important dimension in evolution—time, allowing a wealth of fundamental evolutionary processes to be addressed at unprecedented resolution. This review taps into the most recent findings in ancient DNA research to present analyses of ancient genomic and metagenomic data.
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Affiliation(s)
- Michela Leonardi
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Pablo Librado
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Clio Der Sarkissian
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Mikkel Schubert
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Ahmed H Alfarhan
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saleh A Alquraishi
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Cristina Gamba
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark
| | - Eske Willerslev
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark.,Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ludovic Orlando
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade, Copenhagen, Denmark.,Université de Toulouse, University Paul Sabatier (UPS), Laboratoire AMIS, Toulouse, France
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23
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Buxton AS, Groombridge JJ, Griffiths RA. Seasonal variation in environmental DNA detection in sediment and water samples. PLoS One 2018; 13:e0191737. [PMID: 29352294 PMCID: PMC5774844 DOI: 10.1371/journal.pone.0191737] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/10/2018] [Indexed: 11/18/2022] Open
Abstract
The use of aquatic environmental DNA (eDNA) to detect the presence of species depends on the seasonal activity of the species in the sampled habitat. eDNA may persist in sediments for longer than it does in water, and analysing sediment could potentially extend the seasonal window for species assessment. Using the great crested newt as a model, we compare how detection probability changes across the seasons in eDNA samples collected from both pond water and pond sediments. Detection of both aquatic and sedimentary eDNA varied through the year, peaking in the summer (July), with its lowest point in the winter (January): in all seasons, detection probability of eDNA from water exceeded that from sediment. Detection probability of eDNA also varied between study areas, and according to great crested newt habitat suitability and sediment type. As aquatic and sedimentary eDNA show the same seasonal fluctuations, the patterns observed in both sample types likely reflect current or recent presence of the target species. However, given the low detection probabilities found in the autumn and winter we would not recommend using either aquatic or sedimentary eDNA for year-round sampling without further refinement and testing of the methods.
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Affiliation(s)
- Andrew S. Buxton
- Durrell Institute for Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Marlowe Building, Canterbury, Kent, United Kingdom
- * E-mail:
| | - Jim J. Groombridge
- Durrell Institute for Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Marlowe Building, Canterbury, Kent, United Kingdom
| | - Richard A. Griffiths
- Durrell Institute for Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Marlowe Building, Canterbury, Kent, United Kingdom
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24
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Weaver JL, Pearce CI, Sjöblom R, McCloy JS, Miller M, Varga T, Arey BW, Conroy MA, Peeler DK, Koestler RJ, DePriest PT, Vicenzi EP, Hjärthner-Holdar E, Ogenhall E, Kruger AA. Pre-viking Swedish hillfort glass: A prospective long-term alteration analogue for vitrified nuclear waste. INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE 2018; 9:10.1111/ijag.12351. [PMID: 31093322 PMCID: PMC6512990 DOI: 10.1111/ijag.12351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 03/07/2018] [Indexed: 06/09/2023]
Abstract
Models for long-term glass alteration are required to satisfy performance predictions of vitrified nuclear waste in various disposal scenarios. Durability parameters are usually extracted from short-term laboratory tests, and sometimes checked with long-term natural experiments on glasses, termed analogues. In this paper, a unique potential ancient glass analogue from Sweden is discussed. The hillfort glass found at Broborg represents a unique case study as a vitrified waste glass analogue to compare to Low Activity Waste glass to be emplaced in near surface conditions at Hanford (USA). Glasses at Broborg have similar and dissimilar compositions to LAW glasses, allowing the testing of long-term alteration of different glass chemistries. In addition, the environmental history of the site is reasonably well documented. Initial investigations on previously collected samples established methodologies for handling and characterizing these artifacts by laboratory methods while preserving their alteration layers and cultural context. Evidence of possible biologically influenced glass alteration, and differential alteration in the 2 types of glass found at the Broborg site is presented.
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Affiliation(s)
- Jamie L. Weaver
- National Institute of Standards and Technology, Gaithersburg, MD, USA
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | | | - John S. McCloy
- Pacific Northwest National Laboratory, Richland, WA, USA
- School of Materials and Mechanical Engineering, Washington State University, Pullman, WA, USA
| | - Micah Miller
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Tamas Varga
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Bruce W. Arey
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | | | - Robert J. Koestler
- Museum Conservation Institute, Smithsonian Institution, Suitland, MD, USA
| | - Paula T. DePriest
- Museum Conservation Institute, Smithsonian Institution, Suitland, MD, USA
| | - Edward P. Vicenzi
- Museum Conservation Institute, Smithsonian Institution, Suitland, MD, USA
| | - Eva Hjärthner-Holdar
- The Archaeologists, Geoarchaeological Laboratory, National Historical Museums (SHMM), Uppsala, Sweden
| | - Erik Ogenhall
- The Archaeologists, Geoarchaeological Laboratory, National Historical Museums (SHMM), Uppsala, Sweden
| | - Albert A. Kruger
- U.S. Department of Energy, Office of River Protection, Richland, WA, USA
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25
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Deiner K, Bik HM, Mächler E, Seymour M, Lacoursière-Roussel A, Altermatt F, Creer S, Bista I, Lodge DM, de Vere N, Pfrender ME, Bernatchez L. Environmental DNA metabarcoding: Transforming how we survey animal and plant communities. Mol Ecol 2017; 26:5872-5895. [PMID: 28921802 DOI: 10.1111/mec.14350] [Citation(s) in RCA: 601] [Impact Index Per Article: 85.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 08/31/2017] [Accepted: 09/05/2017] [Indexed: 12/14/2022]
Abstract
The genomic revolution has fundamentally changed how we survey biodiversity on earth. High-throughput sequencing ("HTS") platforms now enable the rapid sequencing of DNA from diverse kinds of environmental samples (termed "environmental DNA" or "eDNA"). Coupling HTS with our ability to associate sequences from eDNA with a taxonomic name is called "eDNA metabarcoding" and offers a powerful molecular tool capable of noninvasively surveying species richness from many ecosystems. Here, we review the use of eDNA metabarcoding for surveying animal and plant richness, and the challenges in using eDNA approaches to estimate relative abundance. We highlight eDNA applications in freshwater, marine and terrestrial environments, and in this broad context, we distill what is known about the ability of different eDNA sample types to approximate richness in space and across time. We provide guiding questions for study design and discuss the eDNA metabarcoding workflow with a focus on primers and library preparation methods. We additionally discuss important criteria for consideration of bioinformatic filtering of data sets, with recommendations for increasing transparency. Finally, looking to the future, we discuss emerging applications of eDNA metabarcoding in ecology, conservation, invasion biology, biomonitoring, and how eDNA metabarcoding can empower citizen science and biodiversity education.
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Affiliation(s)
- Kristy Deiner
- Atkinson Center for a Sustainable Future, Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Holly M Bik
- Department of Nematology, University of California, Riverside, CA, USA
| | - Elvira Mächler
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Aquatic Ecology, Dübendorf, Switzerland.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Mathew Seymour
- Molecular Ecology and Fisheries Genetics Laboratory, School of Biological Sciences, Environment Centre Wales Building, Bangor University, Bangor, Gwynedd, UK
| | | | - Florian Altermatt
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Aquatic Ecology, Dübendorf, Switzerland.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Simon Creer
- Molecular Ecology and Fisheries Genetics Laboratory, School of Biological Sciences, Environment Centre Wales Building, Bangor University, Bangor, Gwynedd, UK
| | - Iliana Bista
- Molecular Ecology and Fisheries Genetics Laboratory, School of Biological Sciences, Environment Centre Wales Building, Bangor University, Bangor, Gwynedd, UK.,Wellcome Trust Sanger Institute, Hinxton, Cambridgeshire, UK
| | - David M Lodge
- Atkinson Center for a Sustainable Future, Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Natasha de Vere
- Conservation and Research Department, National Botanic Garden of Wales, Llanarthne, Carmarthenshire, UK.,Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, UK
| | - Michael E Pfrender
- Department of Biological Sciences and Environmental Change Initiative, University of Notre Dame, Notre Dame, IN, USA
| | - Louis Bernatchez
- IBIS (Institut de Biologie Intégrative et des Systèmes), Université Laval, Québec, QC, Canada
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26
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Zimmermann HH, Raschke E, Epp LS, Stoof-Leichsenring KR, Schirrmeister L, Schwamborn G, Herzschuh U. The History of Tree and Shrub Taxa on Bol'shoy Lyakhovsky Island (New Siberian Archipelago) since the Last Interglacial Uncovered by Sedimentary Ancient DNA and Pollen Data. Genes (Basel) 2017; 8:E273. [PMID: 29027988 PMCID: PMC5664123 DOI: 10.3390/genes8100273] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/27/2017] [Accepted: 10/04/2017] [Indexed: 11/21/2022] Open
Abstract
Ecosystem boundaries, such as the Arctic-Boreal treeline, are strongly coupled with climate and were spatially highly dynamic during past glacial-interglacial cycles. Only a few studies cover vegetation changes since the last interglacial, as most of the former landscapes are inundated and difficult to access. Using pollen analysis and sedimentary ancient DNA (sedaDNA) metabarcoding, we reveal vegetation changes on Bol'shoy Lyakhovsky Island since the last interglacial from permafrost sediments. Last interglacial samples depict high levels of floral diversity with the presence of trees (Larix, Picea, Populus) and shrubs (Alnus, Betula, Ribes, Cornus, Saliceae) on the currently treeless island. After the Last Glacial Maximum, Larix re-colonised the island but disappeared along with most shrub taxa. This was probably caused by Holocene sea-level rise, which led to increased oceanic conditions on the island. Additionally, we applied two newly developed larch-specific chloroplast markers to evaluate their potential for tracking past population dynamics from environmental samples. The novel markers were successfully re-sequenced and exhibited two variants of each marker in last interglacial samples. SedaDNA can track vegetation changes as well as genetic changes across geographic space through time and can improve our understanding of past processes that shape modern patterns.
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Affiliation(s)
- Heike H Zimmermann
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.
| | - Elena Raschke
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
| | - Laura S Epp
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
| | - Kathleen R Stoof-Leichsenring
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
| | - Lutz Schirrmeister
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
| | - Georg Schwamborn
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
| | - Ulrike Herzschuh
- Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Periglacial Research Unit, Telegrafenberg A43, 14473 Potsdam, Germany.
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.
- Institute of Earth and Environmental Sciences, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.
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27
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Niemeyer B, Epp LS, Stoof-Leichsenring KR, Pestryakova LA, Herzschuh U. A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline. Mol Ecol Resour 2017; 17:e46-e62. [DOI: 10.1111/1755-0998.12689] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 04/13/2017] [Accepted: 04/25/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Bastian Niemeyer
- Periglacial Research Section; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Potsdam Germany
- Institute of Earth and Environmental Science; University of Potsdam; Potsdam-Golm Germany
| | - Laura S. Epp
- Periglacial Research Section; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Potsdam Germany
| | | | - Luidmila A. Pestryakova
- Department for Geography and Biology; North-Eastern Federal University of Yakutsk; Yakutsk Russia
| | - Ulrike Herzschuh
- Periglacial Research Section; Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Potsdam Germany
- Institute of Earth and Environmental Science; University of Potsdam; Potsdam-Golm Germany
- Institute of Biochemistry and Biology; University of Potsdam; Potsdam-Golm Germany
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28
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Parducci L, Bennett KD, Ficetola GF, Alsos IG, Suyama Y, Wood JR, Pedersen MW. Ancient plant DNA in lake sediments. THE NEW PHYTOLOGIST 2017; 214:924-942. [PMID: 28370025 DOI: 10.1111/nph.14470] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 12/07/2016] [Indexed: 05/14/2023]
Abstract
Contents 924 I. 925 II. 925 III. 927 IV. 929 V. 930 VI. 930 VII. 931 VIII. 933 IX. 935 X. 936 XI. 938 938 References 938 SUMMARY: Recent advances in sequencing technologies now permit the analyses of plant DNA from fossil samples (ancient plant DNA, plant aDNA), and thus enable the molecular reconstruction of palaeofloras. Hitherto, ancient frozen soils have proved excellent in preserving DNA molecules, and have thus been the most commonly used source of plant aDNA. However, DNA from soil mainly represents taxa growing a few metres from the sampling point. Lakes have larger catchment areas and recent studies have suggested that plant aDNA from lake sediments is a more powerful tool for palaeofloristic reconstruction. Furthermore, lakes can be found globally in nearly all environments, and are therefore not limited to perennially frozen areas. Here, we review the latest approaches and methods for the study of plant aDNA from lake sediments and discuss the progress made up to the present. We argue that aDNA analyses add new and additional perspectives for the study of ancient plant populations and, in time, will provide higher taxonomic resolution and more precise estimation of abundance. Despite this, key questions and challenges remain for such plant aDNA studies. Finally, we provide guidelines on technical issues, including lake selection, and we suggest directions for future research on plant aDNA studies in lake sediments.
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Affiliation(s)
- Laura Parducci
- Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, Uppsala, 75236, Sweden
| | - Keith D Bennett
- Department of Geography & Sustainable Development, School of Geography & Geosciences, University of St Andrews, St Andrews, Fife, KY16 9AL, UK
- Marine Laboratory, Queen's University Belfast, Portaferry, BT22 1LS, UK
| | - Gentile Francesco Ficetola
- CNRS, Université Grenoble-Alpes, Laboratoire d'Ecologie Alpine (LECA), Grenoble, F-38000, France
- Department of Biosciences, Università degli Studi di Milano, Milan, 20133, Italy
| | - Inger Greve Alsos
- Tromsø Museum, UiT - The Arctic University of Norway, Tromsø, NO-9037, Norway
| | - Yoshihisa Suyama
- Field Science Center, Graduate School of Agricultural Science, Tohoku University, 232-3 Yomogida, Naruko-onsen, Osaki, Miyagi, 989-6711, Japan
| | - Jamie R Wood
- Long-term Ecology Lab, Landcare Research, PO Box 69040, Lincoln Canterbury, 7640, New Zealand
| | - Mikkel Winther Pedersen
- Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, Copenhagen, 1350, Denmark
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29
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Sjögren P, Edwards ME, Gielly L, Langdon CT, Croudace IW, Merkel MKF, Fonville T, Alsos IG. Lake sedimentary DNA accurately records 20 th Century introductions of exotic conifers in Scotland. THE NEW PHYTOLOGIST 2017; 213:929-941. [PMID: 27678125 PMCID: PMC5215665 DOI: 10.1111/nph.14199] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 08/08/2016] [Indexed: 05/08/2023]
Abstract
Sedimentary DNA (sedDNA) has recently emerged as a new proxy for reconstructing past vegetation, but its taphonomy, source area and representation biases need better assessment. We investigated how sedDNA in recent sediments of two small Scottish lakes reflects a major vegetation change, using well-documented 20th Century plantations of exotic conifers as an experimental system. We used next-generation sequencing to barcode sedDNA retrieved from subrecent lake sediments. For comparison, pollen was analysed from the same samples. The sedDNA record contains 73 taxa (mainly genus or species), all but one of which are present in the study area. Pollen and sedDNA shared 35% of taxa, which partly reflects a difference in source area. More aquatic taxa were recorded in sedDNA, whereas taxa assumed to be of regional rather than local origin were recorded only as pollen. The chronology of the sediments and planting records are well aligned, and sedDNA of exotic conifers appears in high quantities with the establishment of plantations around the lakes. SedDNA recorded other changes in local vegetation that accompanied afforestation. There were no signs of DNA leaching in the sediments or DNA originating from pollen.
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Affiliation(s)
- Per Sjögren
- Tromsø University MuseumUiT – The Arctic University of NorwayLars Thøringsvei 10N‐9037TromsøNorway
| | - Mary E. Edwards
- Tromsø University MuseumUiT – The Arctic University of NorwayLars Thøringsvei 10N‐9037TromsøNorway
- Department of Geography and EnvironmentUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Ludovic Gielly
- Laboratoire d'Ecologie AlpineUniversité Grenoble AlpesF‐38000GrenobleFrance
- Laboratoire d'Ecologie AlpineCNRSF‐38000GrenobleFrance
| | - Catherine T. Langdon
- Department of Geography and EnvironmentUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Ian W. Croudace
- Ocean and Earth ScienceUniversity of SouthamptonNational Oceanography CentreSouthamptonSO14 3ZHUK
| | | | - Thierry Fonville
- Department of Geography and EnvironmentUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Inger Greve Alsos
- Tromsø University MuseumUiT – The Arctic University of NorwayLars Thøringsvei 10N‐9037TromsøNorway
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30
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Freeland JR. The importance of molecular markers and primer design when characterizing biodiversity from environmental DNA. Genome 2016; 60:358-374. [PMID: 28177833 DOI: 10.1139/gen-2016-0100] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Environmental DNA (eDNA) comprises DNA fragments that have been shed into the environment by organisms, and which can be extracted from environmental samples such as water or soil. Characterization of eDNA can allow researchers to infer the presence or absence of species from a particular site without the need to locate and identify individuals, and therefore may provide an extremely valuable tool for quantifying biodiversity. However, as is often the case with relatively new protocols, methodological challenges remain. A number of earlier reviews have discussed these challenges, but none have provided extensive treatment of the critical decisions surrounding molecular markers and primer development for use in eDNA assays. This review discusses a number of options and approaches that can be used when determining which primers and gene regions are most appropriate for either targeted species detection or metabarcoding macro-organisms from eDNA. The latter represents a new field that is growing rapidly, and which has the potential to revolutionize future assessments of community and ecosystem diversity.
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Affiliation(s)
- Joanna R Freeland
- Department of Biology, Trent University, Peterborough, ON K9J 7B8, Canada.,Department of Biology, Trent University, Peterborough, ON K9J 7B8, Canada
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31
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Bell KL, de Vere N, Keller A, Richardson RT, Gous A, Burgess KS, Brosi BJ. Pollen DNA barcoding: current applications and future prospects. Genome 2016; 59:629-40. [DOI: 10.1139/gen-2015-0200] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Identification of the species origin of pollen has many applications, including assessment of plant–pollinator networks, reconstruction of ancient plant communities, product authentication, allergen monitoring, and forensics. Such applications, however, have previously been limited by microscopy-based identification of pollen, which is slow, has low taxonomic resolution, and has few expert practitioners. One alternative is pollen DNA barcoding, which could overcome these issues. Recent studies demonstrate that both chloroplast and nuclear barcoding markers can be amplified from pollen. These recent validations of pollen metabarcoding indicate that now is the time for researchers in various fields to consider applying these methods to their research programs. In this paper, we review the nascent field of pollen DNA barcoding and discuss potential new applications of this technology, highlighting existing limitations and future research developments that will improve its utility in a wide range of applications.
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Affiliation(s)
- Karen L. Bell
- Emory University, School of Environmental Sciences, Atlanta, GA, USA
| | - Natasha de Vere
- National Botanic Garden of Wales, Llanarthne, United Kingdom
| | - Alexander Keller
- Department of Animal Ecology and Tropical Biology, University of Würzburg, Würzburg, Germany
| | | | - Annemarie Gous
- Biotechnology Platform, Agricultural Research Council, Pretoria, South Africa
- School of Life Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | | | - Berry J. Brosi
- Emory University, School of Environmental Sciences, Atlanta, GA, USA
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32
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Postglacial viability and colonization in North America's ice-free corridor. Nature 2016; 537:45-49. [PMID: 27509852 DOI: 10.1038/nature19085] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 07/07/2016] [Indexed: 02/07/2023]
Abstract
During the Last Glacial Maximum, continental ice sheets isolated Beringia (northeast Siberia and northwest North America) from unglaciated North America. By around 15 to 14 thousand calibrated radiocarbon years before present (cal. kyr bp), glacial retreat opened an approximately 1,500-km-long corridor between the ice sheets. It remains unclear when plants and animals colonized this corridor and it became biologically viable for human migration. We obtained radiocarbon dates, pollen, macrofossils and metagenomic DNA from lake sediment cores in a bottleneck portion of the corridor. We find evidence of steppe vegetation, bison and mammoth by approximately 12.6 cal. kyr bp, followed by open forest, with evidence of moose and elk at about 11.5 cal. kyr bp, and boreal forest approximately 10 cal. kyr bp. Our findings reveal that the first Americans, whether Clovis or earlier groups in unglaciated North America before 12.6 cal. kyr bp, are unlikely to have travelled by this route into the Americas. However, later groups may have used this north-south passageway.
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33
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Marmesat E, Soriano L, Mazzoni CJ, Sommer S, Godoy JA. PCR Strategies for Complete Allele Calling in Multigene Families Using High-Throughput Sequencing Approaches. PLoS One 2016; 11:e0157402. [PMID: 27294261 PMCID: PMC4905633 DOI: 10.1371/journal.pone.0157402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/27/2016] [Indexed: 11/19/2022] Open
Abstract
The characterization of multigene families with high copy number variation is often approached through PCR amplification with highly degenerate primers to account for all expected variants flanking the region of interest. Such an approach often introduces PCR biases that result in an unbalanced representation of targets in high-throughput sequencing libraries that eventually results in incomplete detection of the targeted alleles. Here we confirm this result and propose two different amplification strategies to alleviate this problem. The first strategy (called pooled-PCRs) targets different subsets of alleles in multiple independent PCRs using different moderately degenerate primer pairs, whereas the second approach (called pooled-primers) uses a custom-made pool of non-degenerate primers in a single PCR. We compare their performance to the common use of a single PCR with highly degenerate primers using the MHC class I of the Iberian lynx as a model. We found both novel approaches to work similarly well and better than the conventional approach. They significantly scored more alleles per individual (11.33 ± 1.38 and 11.72 ± 0.89 vs 7.94 ± 1.95), yielded more complete allelic profiles (96.28 ± 8.46 and 99.50 ± 2.12 vs 63.76 ± 15.43), and revealed more alleles at a population level (13 vs 12). Finally, we could link each allele's amplification efficiency with the primer-mismatches in its flanking sequences and show that ultra-deep coverage offered by high-throughput technologies does not fully compensate for such biases, especially as real alleles may reach lower coverage than artefacts. Adopting either of the proposed amplification methods provides the opportunity to attain more complete allelic profiles at lower coverages, improving confidence over the downstream analyses and subsequent applications.
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Affiliation(s)
- Elena Marmesat
- Department of Integrative Ecology, Estación Biológica de Doñana (CSIC), Sevilla, Spain
| | - Laura Soriano
- Department of Integrative Ecology, Estación Biológica de Doñana (CSIC), Sevilla, Spain
| | - Camila J. Mazzoni
- Berlin Center for Genomics in Biodiversity Research (BeGenDiv), Berlin, Germany
- Leibniz Institute for Zoo and Wildlife Research (IZW), Berlin, Germany
| | - Simone Sommer
- Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Ulm, Germany
| | - José A. Godoy
- Department of Integrative Ecology, Estación Biológica de Doñana (CSIC), Sevilla, Spain
- * E-mail:
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A short phylogenetically informative cpDNA fragment for the identification of Pinus species. BIOCHEM SYST ECOL 2016. [DOI: 10.1016/j.bse.2016.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Birks HJB, Birks HH. How have studies of ancient DNA from sediments contributed to the reconstruction of Quaternary floras? THE NEW PHYTOLOGIST 2016; 209:499-506. [PMID: 26402315 DOI: 10.1111/nph.13657] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 08/03/2015] [Indexed: 06/05/2023]
Abstract
499 I. 499 II. 500 III. 500 IV. 500 V. 500 VI. 501 VII. 502 VIII. 504 504 References 505 SUMMARY: Ancient DNA (aDNA) from lake sediments, peats, permafrost soils, preserved megafaunal gut contents and coprolites has been used to reconstruct late-Quaternary floras. aDNA is either used alone for floristic reconstruction or compared with pollen and/or macrofossil results. In comparative studies, aDNA may complement pollen and macrofossil analyses by increasing the number of taxa found. We discuss the relative contributions of each fossil group to taxon richness and the number of unique taxa found, and situations in which aDNA has refined pollen identifications. Pressing problems in aDNA studies are contamination and ignorance about taphonomy (transportation, incorporation, and preservation in sediments). Progress requires that these problems are reduced to allow aDNA to reach its full potential contribution to reconstructions of Quaternary floras.
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Affiliation(s)
- H John B Birks
- Department of Biology, University of Bergen, and Bjerknes Centre for Climate Research, Postbox 7803, N-5020, Bergen, Norway
- Environmental Change Research Centre, University College London, Gower Street, London, WC1E 6BT, UK
| | - Hilary H Birks
- Department of Biology, University of Bergen, and Bjerknes Centre for Climate Research, Postbox 7803, N-5020, Bergen, Norway
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Parducci L, Väliranta M, Salonen JS, Ronkainen T, Matetovici I, Fontana SL, Eskola T, Sarala P, Suyama Y. Proxy comparison in ancient peat sediments: pollen, macrofossil and plant DNA. Philos Trans R Soc Lond B Biol Sci 2015; 370:20130382. [PMID: 25487333 DOI: 10.1098/rstb.2013.0382] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We compared DNA, pollen and macrofossil data obtained from Weichselian interstadial (age more than 40 kyr) and Holocene (maximum age 8400 cal yr BP) peat sediments from northern Europe and used them to reconstruct contemporary floristic compositions at two sites. The majority of the samples provided plant DNA sequences of good quality with success amplification rates depending on age. DNA and sequencing analysis provided five plant taxa from the older site and nine taxa from the younger site, corresponding to 7% and 15% of the total number of taxa identified by the three proxies together. At both sites, pollen analysis detected the largest (54) and DNA the lowest (10) number of taxa, but five of the DNA taxa were not detected by pollen and macrofossils. The finding of a larger overlap between DNA and pollen than between DNA and macrofossils proxies seems to go against our previous suggestion based on lacustrine sediments that DNA originates principally from plant tissues and less from pollen. At both sites, we also detected Quercus spp. DNA, but few pollen grains were found in the record, and these are normally interpreted as long-distance dispersal. We confirm that in palaeoecological investigations, sedimentary DNA analysis is less comprehensive than classical morphological analysis, but is a complementary and important tool to obtain a more complete picture of past flora.
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Affiliation(s)
- Laura Parducci
- Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, ØsterVoldgade 5-7, 1350 Copenhagen, Denmark
| | - Minna Väliranta
- Department of Environmental Sciences, University of Helsinki, PO Box 65, 00014 Helsinki, Finland
| | - J Sakari Salonen
- Department of Geosciences and Geography, University of Helsinki, PO Box 64, 00014 Helsinki, Finland
| | - Tiina Ronkainen
- Department of Environmental Sciences, University of Helsinki, PO Box 65, 00014 Helsinki, Finland
| | - Irina Matetovici
- Molecular Biology Centre, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babes-Bolyai-University ClujNapoca, 42 TreboniuLaurian Street, 400271 Cluj-Napoca, Romania
| | - Sonia L Fontana
- School of Geography, Archaeology and Palaeoecology, Queen's University Belfast, Belfast BT7 1NN, UK
| | - Tiina Eskola
- Department of Geosciences, University of Oulu, PO Box 3000, 90014 Oulu, Finland
| | - Pertti Sarala
- Geological Survey of Finland, PO Box 77, 96101 Rovaniemi, Finland
| | - Yoshihisa Suyama
- Graduate School of Agricultural Science, Tohoku University, 232-3 Yomogida, Naruko-onsen, Osaki, Miyagi 989-6711, Japan
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Pansu J, Giguet-Covex C, Ficetola GF, Gielly L, Boyer F, Zinger L, Arnaud F, Poulenard J, Taberlet P, Choler P. Reconstructing long-term human impacts on plant communities: an ecological approach based on lake sediment DNA. Mol Ecol 2015; 24:1485-98. [PMID: 25735209 DOI: 10.1111/mec.13136] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 02/24/2015] [Accepted: 02/27/2015] [Indexed: 11/30/2022]
Abstract
Paleoenvironmental studies are essential to understand biodiversity changes over long timescales and to assess the relative importance of anthropogenic and environmental factors. Sedimentary ancient DNA (sedaDNA) is an emerging tool in the field of paleoecology and has proven to be a complementary approach to the use of pollen and macroremains for investigating past community changes. SedaDNA-based reconstructions of ancient environments often rely on indicator taxa or expert knowledge, but quantitative ecological analyses might provide more objective information. Here, we analysed sedaDNA to investigate plant community trajectories in the catchment of a high-elevation lake in the Alps over the last 6400 years. We combined data on past and present plant species assemblages along with sedimentological and geochemical records to assess the relative impact of human activities through pastoralism, and abiotic factors (temperature and soil evolution). Over the last 6400 years, we identified significant variation in plant communities, mostly related to soil evolution and pastoral activities. An abrupt vegetational change corresponding to the establishment of an agropastoral landscape was detected during the Late Holocene, approximately 4500 years ago, with the replacement of mountain forests and tall-herb communities by heathlands and grazed lands. Our results highlight the importance of anthropogenic activities in mountain areas for the long-term evolution of local plant assemblages. SedaDNA data, associated with other paleoenvironmental proxies and present plant assemblages, appear to be a relevant tool for reconstruction of plant cover history. Their integration, in conjunction with classical tools, offers interesting perspectives for a better understanding of long-term ecosystem dynamics under the influence of human-induced and environmental drivers.
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Affiliation(s)
- Johan Pansu
- Univ. Grenoble Alpes, LECA, F-38000, Grenoble, France; CNRS, LECA, F-38000, Grenoble, France
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Pedersen MW, Overballe-Petersen S, Ermini L, Sarkissian CD, Haile J, Hellstrom M, Spens J, Thomsen PF, Bohmann K, Cappellini E, Schnell IB, Wales NA, Carøe C, Campos PF, Schmidt AMZ, Gilbert MTP, Hansen AJ, Orlando L, Willerslev E. Ancient and modern environmental DNA. Philos Trans R Soc Lond B Biol Sci 2015; 370:20130383. [PMID: 25487334 PMCID: PMC4275890 DOI: 10.1098/rstb.2013.0383] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
DNA obtained from environmental samples such as sediments, ice or water (environmental DNA, eDNA), represents an important source of information on past and present biodiversity. It has revealed an ancient forest in Greenland, extended by several thousand years the survival dates for mainland woolly mammoth in Alaska, and pushed back the dates for spruce survival in Scandinavian ice-free refugia during the last glaciation. More recently, eDNA was used to uncover the past 50 000 years of vegetation history in the Arctic, revealing massive vegetation turnover at the Pleistocene/Holocene transition, with implications for the extinction of megafauna. Furthermore, eDNA can reflect the biodiversity of extant flora and fauna, both qualitatively and quantitatively, allowing detection of rare species. As such, trace studies of plant and vertebrate DNA in the environment have revolutionized our knowledge of biogeography. However, the approach remains marred by biases related to DNA behaviour in environmental settings, incomplete reference databases and false positive results due to contamination. We provide a review of the field.
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Affiliation(s)
- Mikkel Winther Pedersen
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Søren Overballe-Petersen
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Luca Ermini
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Clio Der Sarkissian
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - James Haile
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark Trace and Environmental DNA Laboratory, Curtin University, Kent Street, Bentley, Perth, Western Australia 6102, Australia
| | - Micaela Hellstrom
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Johan Spens
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark Department of Wildlife, Fish and Environmental Studies, SLU, Umeå S-901 83, Sweden
| | - Philip Francis Thomsen
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Kristine Bohmann
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, UK
| | - Enrico Cappellini
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Ida Bærholm Schnell
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark Center for Zoo and Wild Animal Health, Copenhagen Zoo, Frederiksberg, Denmark
| | - Nathan A Wales
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Christian Carøe
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Paula F Campos
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Astrid M Z Schmidt
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - M Thomas P Gilbert
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Anders J Hansen
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Ludovic Orlando
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
| | - Eske Willerslev
- Centre for GeoGenetics, The Natural History Museum of Denmark, Oester Voldgade 5-7, Copenhagen C 1350, Denmark
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Ficetola GF, Pansu J, Bonin A, Coissac E, Giguet-Covex C, De Barba M, Gielly L, Lopes CM, Boyer F, Pompanon F, Rayé G, Taberlet P. Replication levels, false presences and the estimation of the presence/absence from eDNA metabarcoding data. Mol Ecol Resour 2014; 15:543-56. [PMID: 25327646 DOI: 10.1111/1755-0998.12338] [Citation(s) in RCA: 280] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/27/2014] [Accepted: 10/07/2014] [Indexed: 01/21/2023]
Abstract
Environmental DNA (eDNA) metabarcoding is increasingly used to study the present and past biodiversity. eDNA analyses often rely on amplification of very small quantities or degraded DNA. To avoid missing detection of taxa that are actually present (false negatives), multiple extractions and amplifications of the same samples are often performed. However, the level of replication needed for reliable estimates of the presence/absence patterns remains an unaddressed topic. Furthermore, degraded DNA and PCR/sequencing errors might produce false positives. We used simulations and empirical data to evaluate the level of replication required for accurate detection of targeted taxa in different contexts and to assess the performance of methods used to reduce the risk of false detections. Furthermore, we evaluated whether statistical approaches developed to estimate occupancy in the presence of observational errors can successfully estimate true prevalence, detection probability and false-positive rates. Replications reduced the rate of false negatives; the optimal level of replication was strongly dependent on the detection probability of taxa. Occupancy models successfully estimated true prevalence, detection probability and false-positive rates, but their performance increased with the number of replicates. At least eight PCR replicates should be performed if detection probability is not high, such as in ancient DNA studies. Multiple DNA extractions from the same sample yielded consistent results; in some cases, collecting multiple samples from the same locality allowed detecting more species. The optimal level of replication for accurate species detection strongly varies among studies and could be explicitly estimated to improve the reliability of results.
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Affiliation(s)
- Gentile F Ficetola
- Laboratoire d'Ecologie Alpine (LECA), Université Grenoble Alpes Savoie, F-38000, Grenoble, France
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40
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Galimberti A, De Mattia F, Bruni I, Scaccabarozzi D, Sandionigi A, Barbuto M, Casiraghi M, Labra M. A DNA barcoding approach to characterize pollen collected by honeybees. PLoS One 2014; 9:e109363. [PMID: 25296114 PMCID: PMC4190116 DOI: 10.1371/journal.pone.0109363] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 09/02/2014] [Indexed: 11/18/2022] Open
Abstract
In the present study, we investigated DNA barcoding effectiveness to characterize honeybee pollen pellets, a food supplement largely used for human nutrition due to its therapeutic properties. We collected pollen pellets using modified beehives placed in three zones within an alpine protected area (Grigna Settentrionale Regional Park, Italy). A DNA barcoding reference database, including rbcL and trnH-psbA sequences from 693 plant species (104 sequenced in this study) was assembled. The database was used to identify pollen collected from the hives. Fifty-two plant species were identified at the molecular level. Results suggested rbcL alone could not distinguish among congeneric plants; however, psbA-trnH identified most of the pollen samples at the species level. Substantial variability in pollen composition was observed between the highest elevation locality (Alpe Moconodeno), characterized by arid grasslands and a rocky substrate, and the other two sites (Cornisella and Ortanella) at lower altitudes. Pollen from Ortanella and Cornisella showed the presence of typical deciduous forest species; however in samples collected at Ortanella, pollen of the invasive Lonicera japonica, and the ornamental Pelargonium x hortorum were observed. Our results indicated pollen composition was largely influenced by floristic local biodiversity, plant phenology, and the presence of alien flowering species. Therefore, pollen molecular characterization based on DNA barcoding might serve useful to beekeepers in obtaining honeybee products with specific nutritional or therapeutic characteristics desired by food market demands.
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Affiliation(s)
- Andrea Galimberti
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | - Fabrizio De Mattia
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | - Ilaria Bruni
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | | | - Anna Sandionigi
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | - Michela Barbuto
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | - Maurizio Casiraghi
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
| | - Massimo Labra
- Università degli Studi di Milano-Bicocca, ZooPlantLab, Dipartimento di Biotecnologie e Bioscienze, Milano, Italy
- * E-mail:
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Boessenkool S, McGlynn G, Epp LS, Taylor D, Pimentel M, Gizaw A, Nemomissa S, Brochmann C, Popp M. Use of ancient sedimentary DNA as a novel conservation tool for high-altitude tropical biodiversity. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2014; 28:446-455. [PMID: 24372820 DOI: 10.1111/cobi.12195] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/17/2013] [Indexed: 06/03/2023]
Abstract
Conservation of biodiversity may in the future increasingly depend upon the availability of scientific information to set suitable restoration targets. In traditional paleoecology, sediment-based pollen provides a means to define preanthropogenic impact conditions, but problems in establishing the exact provenance and ecologically meaningful levels of taxonomic resolution of the evidence are limiting. We explored the extent to which the use of sedimentary ancient DNA (sedaDNA) may complement pollen data in reconstructing past alpine environments in the tropics. We constructed a record of afro-alpine plants retrieved from DNA preserved in sediment cores from 2 volcanic crater sites in the Albertine Rift, eastern Africa. The record extended well beyond the onset of substantial anthropogenic effects on tropical mountains. To ensure high-quality taxonomic inference from the sedaDNA sequences, we built an extensive DNA reference library covering the majority of the afro-alpine flora, by sequencing DNA from taxonomically verified specimens. Comparisons with pollen records from the same sediment cores showed that plant diversity recovered with sedaDNA improved vegetation reconstructions based on pollen records by revealing both additional taxa and providing increased taxonomic resolution. Furthermore, combining the 2 measures assisted in distinguishing vegetation change at different geographic scales; sedaDNA almost exclusively reflects local vegetation, whereas pollen can potentially originate from a wide area that in highlands in particular can span several ecozones. Our results suggest that sedaDNA may provide information on restoration targets and the nature and magnitude of human-induced environmental changes, including in high conservation priority, biodiversity hotspots, where understanding of preanthropogenic impact (or reference) conditions is highly limited.
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Affiliation(s)
- Sanne Boessenkool
- National Centre for Biosystematics, Natural History Museum, University of Oslo, P.O. Box 1172, Blindern, NO-0318, Oslo, Norway.
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Briggs DEG, Summons RE. Ancient biomolecules: Their origins, fossilization, and role in revealing the history of life. Bioessays 2014; 36:482-90. [DOI: 10.1002/bies.201400010] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Derek E. G. Briggs
- Department of Geology and Geophysics; Yale University; New Haven CT USA
- Yale Peabody Museum of Natural History; New Haven CT USA
| | - Roger E. Summons
- Department of Earth, Atmospheric and Planetary Sciences; Massachusetts Institute of Technology; Cambridge MA USA
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Wilmshurst JM, Moar NT, Wood JR, Bellingham PJ, Findlater AM, Robinson JJ, Stone C. Use of pollen and ancient DNA as conservation baselines for offshore islands in New Zealand. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2014; 28:202-212. [PMID: 24024911 DOI: 10.1111/cobi.12150] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 05/06/2013] [Indexed: 06/02/2023]
Abstract
Islands play a key role globally in the conservation of endemic species. Many island reserves have been highly modified since human colonization, and their restoration and management usually occur without knowledge of their prehuman state. However, conservation paleoecology is increasingly being recognized as a tool that can help to inform both restoration and conservation of island reserves by providing prehuman vegetation baselines. Many of New Zealand's mammal-free offshore islands are foci for biological diversity conservation and, like many islands in the Polynesian region, were deforested following initial human settlement. Therefore, their current restoration, replanting, and management are guided either by historic vegetation descriptions or the occurrence of species on forested islands. We analyzed pollen and ancient DNA in soil cores from an offshore island in northern New Zealand. The result was a 2000-year record of vegetation change that began >1200 years before human settlement and spanned 550 years of human occupation and 180 years of forest succession since human occupation ceased. Between prehuman and contemporary forests there was nearly a complete species turnover including the extirpation of a dominant conifer and a palm tree. The podocarp-dominated forests were replaced by a native but novel angiosperm-dominated forest. There is no modern analog of the prehuman forests on any northern New Zealand island, and those islands that are forested are dominated by angiosperms which are assumed to be climax forests. The pollen and DNA evidence for conifer- and palm-rich forests in the prehuman era challenge this climax forest assumption. Prehuman vegetation records can thus help to inform future restoration of degraded offshore islands by informing the likely rate and direction of successional change; helping to determine whether natural rates of succession are preferable to more costly replanting programs; and providing past species lists if restoration replanting is desired.
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Resolving lost herbivore community structure using coprolites of four sympatric moa species (Aves: Dinornithiformes). Proc Natl Acad Sci U S A 2013; 110:16910-5. [PMID: 24082104 DOI: 10.1073/pnas.1307700110] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Knowledge of extinct herbivore community structuring is essential for assessing the wider ecological impacts of Quaternary extinctions and determining appropriate taxon substitutes for rewilding. Here, we demonstrate the potential for coprolite studies to progress beyond single-species diet reconstructions to resolving community-level detail. The moa (Aves: Dinornithiformes) of New Zealand are an intensively studied group of nine extinct herbivore species, yet many details of their diets and community structuring remain unresolved. We provide unique insights into these aspects of moa biology through analyses of a multispecies coprolite assemblage from a rock overhang in a montane river valley in southern New Zealand. Using ancient DNA (aDNA), we identified 51 coprolites, which included specimens from four sympatric moa species. Pollen, plant macrofossils, and plant aDNA from the coprolites chronicle the diets and habitat preferences of these large avian herbivores during the 400 y before their extinction (∼1450 AD). We use the coprolite data to develop a paleoecological niche model in which moa species were partitioned based on both habitat (forest and valley-floor herbfield) and dietary preferences, the latter reflecting allometric relationships between body size, digestive efficiency, and nutritional requirements. Broad ecological niches occupied by South Island giant moa (Dinornis robustus) and upland moa (Megalapteryx didinus) may reflect sexual segregation and seasonal variation in habitat use, respectively. Our results show that moa lack extant ecological analogs, and their extinction represents an irreplaceable loss of function from New Zealand's terrestrial ecosystems.
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45
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Gugerli F, Alvarez N, Tinner W. A deep dig--hindsight on Holocene vegetation composition from ancient environmental DNA. Mol Ecol 2013; 22:3433-6. [DOI: 10.1111/mec.12356] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Felix Gugerli
- WSL Swiss Federal Research Institute; Zürcherstrasse 111 CH-8903 Birmensdorf Switzerland
| | - Nadir Alvarez
- Department of Ecology and Evolution; University of Lausanne; UNIL-Sorge; Biophore building CH-1015 Lausanne Switzerland
| | - Willy Tinner
- Institute of Plant Sciences and Oeschger Centre for Climate Change Research; Paleoecology; University of Bern; Altenbergrain 21 CH-3013 Bern Switzerland
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