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Levesque-Beaudin V, Miller ME, Dikow T, Miller SE, Prosser SW, Zakharov EV, McKeown JT, Sones JE, Redmond NE, Coddington JA, Santos BF, Bird J, deWaard JR. A workflow for expanding DNA barcode reference libraries through 'museum harvesting' of natural history collections. Biodivers Data J 2023; 11:e100677. [PMID: 38327333 PMCID: PMC10848567 DOI: 10.3897/bdj.11.e100677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/20/2023] [Indexed: 02/09/2024] Open
Abstract
Natural history collections are the physical repositories of our knowledge on species, the entities of biodiversity. Making this knowledge accessible to society - through, for example, digitisation or the construction of a validated, global DNA barcode library - is of crucial importance. To this end, we developed and streamlined a workflow for 'museum harvesting' of authoritatively identified Diptera specimens from the Smithsonian Institution's National Museum of Natural History. Our detailed workflow includes both on-site and off-site processing through specimen selection, labelling, imaging, tissue sampling, databasing and DNA barcoding. This approach was tested by harvesting and DNA barcoding 941 voucher specimens, representing 32 families, 819 genera and 695 identified species collected from 100 countries. We recovered 867 sequences (> 0 base pairs) with a sequencing success of 88.8% (727 of 819 sequenced genera gained a barcode > 300 base pairs). While Sanger-based methods were more effective for recently-collected specimens, the methods employing next-generation sequencing recovered barcodes for specimens over a century old. The utility of the newly-generated reference barcodes is demonstrated by the subsequent taxonomic assignment of nearly 5000 specimen records in the Barcode of Life Data Systems.
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Affiliation(s)
- Valerie Levesque-Beaudin
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
| | - Meredith E. Miller
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
| | - Torsten Dikow
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Scott E. Miller
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Sean W.J. Prosser
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
| | - Evgeny V. Zakharov
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
- Department of Integrative Biology, University of Guelph, Guelph, CanadaDepartment of Integrative Biology, University of GuelphGuelphCanada
| | - Jaclyn T.A. McKeown
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
| | - Jayme E. Sones
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
| | - Niamh E Redmond
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Jonathan A. Coddington
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Bernardo F. Santos
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Jessica Bird
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
| | - Jeremy R. deWaard
- Centre for Biodiversity Genomics, University of Guelph, Guelph, CanadaCentre for Biodiversity Genomics, University of GuelphGuelphCanada
- National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of AmericaNational Museum of Natural History, Smithsonian InstitutionWashington, DCUnited States of America
- School of Environmental Sciences, University of Guelph, Guelph, CanadaSchool of Environmental Sciences, University of GuelphGuelphCanada
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Reed BW, Moghadam AA, Bloom RS, Park ST, Monterrosa AM, Price PM, Barr CM, Briggs SA, Hattar K, McKeown JT, Masiel DJ. Electrostatic subframing and compressive-sensing video in transmission electron microscopy. Struct Dyn 2019; 6:054303. [PMID: 31559318 PMCID: PMC6756919 DOI: 10.1063/1.5115162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/28/2019] [Indexed: 05/30/2023]
Abstract
We present kilohertz-scale video capture rates in a transmission electron microscope, using a camera normally limited to hertz-scale acquisition. An electrostatic deflector rasters a discrete array of images over a large camera, decoupling the acquisition time per subframe from the camera readout time. Total-variation regularization allows features in overlapping subframes to be correctly placed in each frame. Moreover, the system can be operated in a compressive-sensing video mode, whereby the deflections are performed in a known pseudorandom sequence. Compressive sensing in effect performs data compression before the readout, such that the video resulting from the reconstruction can have substantially more total pixels than that were read from the camera. This allows, for example, 100 frames of video to be encoded and reconstructed using only 15 captured subframes in a single camera exposure. We demonstrate experimental tests including laser-driven melting/dewetting, sintering, and grain coarsening of nanostructured gold, with reconstructed video rates up to 10 kHz. The results exemplify the power of the technique by showing that it can be used to study the fundamentally different temporal behavior for the three different physical processes. Both sintering and coarsening exhibited self-limiting behavior, whereby the process essentially stopped even while the heating laser continued to strike the material. We attribute this to changes in laser absorption and to processes inherent to thin-film coarsening. In contrast, the dewetting proceeded at a relatively uniform rate after an initial incubation time consistent with the establishment of a steady-state temperature profile.
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Affiliation(s)
- B W Reed
- Integrated Dynamic Electron Solutions, Inc., Pleasanton, California 94588, USA
| | - A A Moghadam
- Integrated Dynamic Electron Solutions, Inc., Pleasanton, California 94588, USA
| | - R S Bloom
- Integrated Dynamic Electron Solutions, Inc., Pleasanton, California 94588, USA
| | - S T Park
- Integrated Dynamic Electron Solutions, Inc., Pleasanton, California 94588, USA
| | - A M Monterrosa
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - P M Price
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - C M Barr
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | | | - K Hattar
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - J T McKeown
- Lawrence Livermore National Laboratory, Livermore, California 94551, USA
| | - D J Masiel
- Integrated Dynamic Electron Solutions, Inc., Pleasanton, California 94588, USA
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Deponte DP, McKeown JT, Weierstall U, Doak RB, Spence JCH. Towards ETEM serial crystallography: Electron diffraction from liquid jets. Ultramicroscopy 2010; 111:824-7. [PMID: 21146302 DOI: 10.1016/j.ultramic.2010.11.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/19/2010] [Accepted: 11/24/2010] [Indexed: 11/30/2022]
Abstract
A sufficiently thin column of liquid was produced to permit penetration with a 200 keV electron beam as evidenced by the observation of diffraction rings due to the intermolecular spacing of the liquid samples. For liquid thickness below 800 nm, the diffraction rings became visible above the inelastic background. Studies were carried out in the environmental chamber of a transmission electron microscope using water and isopropanol.
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Affiliation(s)
- D P Deponte
- Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287, USA.
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