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Wilanowska PA, Rzymski P, Kaczmarek Ł. Long-Term Survivability of Tardigrade Paramacrobiotus experimentalis (Eutardigrada) at Increased Magnesium Perchlorate Levels: Implications for Astrobiological Research. Life (Basel) 2024; 14:335. [PMID: 38541660 PMCID: PMC10971682 DOI: 10.3390/life14030335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/27/2024] [Accepted: 03/01/2024] [Indexed: 05/26/2024] Open
Abstract
Perchlorate salts, including magnesium perchlorate, are highly toxic compounds that occur on Mars at levels far surpassing those on Earth and pose a significant challenge to the survival of life on this planet. Tardigrades are commonly known for their extraordinary resistance to extreme environmental conditions and are considered model organisms for space and astrobiological research. However, their long-term tolerance to perchlorate salts has not been the subject of any previous studies. Therefore, the present study aimed to assess whether the tardigrade species Paramacrobiotus experimentalis can survive and grow in an environment contaminated with high levels of magnesium perchlorates (0.25-1.0%, 1.5-6.0 mM ClO4- ions). The survival rate of tardigrades decreased with an increase in the concentration of the perchlorate solutions and varied from 83.3% (0.10% concentration) to 20.8% (0.25% concentration) over the course of 56 days of exposure. Tardigrades exposed to 0.15-0.25% magnesium perchlorate revealed significantly decreased body length. Our study indicates that tardigrades can survive and grow in relatively high concentrations of magnesium perchlorates, largely exceeding perchlorate levels observed naturally on Earth, indicating their potential use in Martian experiments.
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Affiliation(s)
- Paulina Anna Wilanowska
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland;
| | - Piotr Rzymski
- Department of Environmental Medicine, Poznan University of Medical Sciences, 60-806 Poznań, Poland;
| | - Łukasz Kaczmarek
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznań, Poland;
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2
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Kayastha P, Wieczorkiewicz F, Pujol M, Robinson A, Michalak M, Kaczmarek Ł, Poprawa I. Elevated external temperature affects cell ultrastructure and heat shock proteins (HSPs) in Paramacrobiotus experimentalis Kaczmarek, Mioduchowska, Poprawa, & Roszkowska, 2020. Sci Rep 2024; 14:5097. [PMID: 38429316 PMCID: PMC10907573 DOI: 10.1038/s41598-024-55295-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 02/22/2024] [Indexed: 03/03/2024] Open
Abstract
Increasing temperature influences the habitats of various organisms, including microscopic invertebrates. To gain insight into temperature-dependent changes in tardigrades, we isolated storage cells exposed to various temperatures and conducted biochemical and ultrastructural analysis in active and tun-state Paramacrobiotus experimentalis Kaczmarek, Mioduchowska, Poprawa, & Roszkowska, 2020. The abundance of heat shock proteins (HSPs) and ultrastructure of the storage cells were examined at different temperatures (20 °C, 30 °C, 35 °C, 37 °C, 40 °C, and 42 °C) in storage cells isolated from active specimens of Pam. experimentalis. In the active animals, upon increase in external temperature, we observed an increase in the levels of HSPs (HSP27, HSP60, and HSP70). Furthermore, the number of ultrastructural changes in storage cells increased with increasing temperature. Cellular organelles, such as mitochondria and the rough endoplasmic reticulum, gradually degenerated. At 42 °C, cell death occurred by necrosis. Apart from the higher electron density of the karyoplasm and the accumulation of electron-dense material in some mitochondria (at 42 °C), almost no changes were observed in the ultrastructure of tun storage cells exposed to different temperatures. We concluded that desiccated (tun-state) are resistant to high temperatures, but not active tardigrades (survival rates of tuns after 24 h of rehydration: 93.3% at 20 °C, 60.0% at 35 °C, 33.3% at 37 °C, 33.3% at 40 °C, and 20.0% at 42 °C).
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Affiliation(s)
- Pushpalata Kayastha
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland.
| | - Filip Wieczorkiewicz
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Bankowa 9, 40-007, Katowice, Poland
| | - Myriam Pujol
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Alison Robinson
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Marek Michalak
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Łukasz Kaczmarek
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland
| | - Izabela Poprawa
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Bankowa 9, 40-007, Katowice, Poland.
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3
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McNally DL, Macdougall LJ, Kirkpatrick BE, Maduka CV, Hoffman TE, Fairbanks BD, Bowman CN, Spencer SL, Anseth KS. Reversible Intracellular Gelation of MCF10A Cells Enables Programmable Control Over 3D Spheroid Growth. Adv Healthc Mater 2024; 13:e2302528. [PMID: 38142299 PMCID: PMC10939856 DOI: 10.1002/adhm.202302528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 12/21/2023] [Indexed: 12/25/2023]
Abstract
In nature, some organisms survive extreme environments by inducing a biostatic state wherein cellular contents are effectively vitrified. Recently, a synthetic biostatic state in mammalian cells is achieved via intracellular network formation using bio-orthogonal strain-promoted azide-alkyne cycloaddition (SPAAC) reactions between functionalized poly(ethylene glycol) (PEG) macromers. In this work, the effects of intracellular network formation on a 3D epithelial MCF10A spheroid model are explored. Macromer-transfected cells are encapsulated in Matrigel, and spheroid area is reduced by ≈50% compared to controls. The intracellular hydrogel network increases the quiescent cell population, as indicated by increased p21 expression. Additionally, bioenergetics (ATP/ADP ratio) and functional metabolic rates are reduced. To enable reversibility of the biostasis effect, a photosensitive nitrobenzyl-containing macromer is incorporated into the PEG network, allowing for light-induced degradation. Following light exposure, cell state, and proliferation return to control levels, while SPAAC-treated spheroids without light exposure (i.e., containing intact intracellular networks) remain smaller and less proliferative through this same period. These results demonstrate that photodegradable intracellular hydrogels can induce a reversible slow-growing state in 3D spheroid culture.
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Affiliation(s)
- Delaney L McNally
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Laura J Macdougall
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Bruce E Kirkpatrick
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Medical Scientist Training Program, School of Medicine, University of Colorado, Aurora, CO, 80045, USA
| | - Chima V Maduka
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Timothy E Hoffman
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Benjamin D Fairbanks
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Christopher N Bowman
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Sabrina L Spencer
- The BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
- Materials Science and Engineering, University of Colorado Boulder, Boulder, CO, 80303, USA
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Troell S, Jönsson KI. Occurrence of tardigrades and morphometric and chemical conditions in rock pools by the Baltic Sea. Sci Rep 2023; 13:19776. [PMID: 37957290 PMCID: PMC10643634 DOI: 10.1038/s41598-023-46697-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 11/03/2023] [Indexed: 11/15/2023] Open
Abstract
Rock pools are eroded depressions in bedrock providing temporary aquatic habitats with varying morphometric and chemical conditions. Tardigrades have adapted to many habitats with varying and extreme abiotic conditions, including desiccation, but their occurrence in rock pools have rarely been investigated. This study investigated the occurrence of tardigrades and the morphometric and chemical conditions in rock pools by the Baltic Sea in southeast Sweden. Samples of benthic material were collected from rock pools at three sites near the town Karlshamn together with measurements of pool size, pH, temperature, salinity, and dissolved oxygen of the water. Tardigrades occurred in about one fifth of the rock pools and included five eutardigrade genera. Also rotifers and nematodes were observed in the samples. The morphometric and chemical variables varied both within and among the three sites but with few differences between rock pools with or without tardigrades. However, rock pools with tardigrades tended to be overall shallower than pools without tardigrades, indicating that more desiccating-prone rock pools may be more favourable habitats for tardigrades. The study shows that tardigrades are part of the micro-invertebrate fauna in rock pools and this habitat deserves more investigations into the occurrence of this animal group.
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Affiliation(s)
- Sofia Troell
- Department of Environmental Science, Kristianstad University, 291 88, Kristianstad, Sweden
| | - K Ingemar Jönsson
- Department of Environmental Science, Kristianstad University, 291 88, Kristianstad, Sweden.
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Hvidepil LKB, Møbjerg N. New insights into osmobiosis and chemobiosis in tardigrades. Front Physiol 2023; 14:1274522. [PMID: 37929212 PMCID: PMC10620314 DOI: 10.3389/fphys.2023.1274522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023] Open
Abstract
Tardigrades are renowned for their ability to enter the extremotolerant state of latent life known as cryptobiosis. While it is widely accepted that cryptobiosis can be induced by freezing (cryobiosis) and by desiccation (anhydrobiosis), the latter involving formation of a so-called tun, the exact mechanisms underlying the state-as well as the significance of other cryptobiosis inducing factors-remain ambiguous. Here, we focus on osmotic and chemical stress tolerance in the marine tidal tardigrade Echiniscoides sigismundi. We show that E. sigismundi enters the tun state following exposure to saturated seawater and upon exposure to locality seawater containing the mitochondrial uncoupler DNP. The latter experiments provide evidence of osmobiosis and chemobiosis, i.e., cryptobiosis induced by high levels of osmolytes and toxicants, respectively. A small decrease in survival was observed following simultaneous exposure to DNP and saturated seawater indicating that the tardigrades may not be entirely ametabolic while in the osmobiotic tun. The tardigrades easily handle exposure to ultrapure water, but hypo-osmotic shock impairs tun formation and when exposed to ultrapure water the tardigrades do not tolerate DNP, indicating that tolerance towards dilute solutions involves energy-consuming processes. We discuss our data in relation to earlier and more contemporary studies on cryptobiosis and we argue that osmobiosis should be defined as a state of cryptobiosis induced by high external osmotic pressure. Our investigation supports the hypothesis that the mechanisms underlying osmobiosis and anhydrobiosis are overlapping and that osmobiosis likely represents the evolutionary forerunner of cryptobiosis forms that involve body water deprivation.
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Affiliation(s)
| | - Nadja Møbjerg
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
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6
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Hurley B, Gamitto J, Parker E, Salinas S, Gunning G, Buehler E, Abbas S, Shattuck D, Buehler M. Resisting Radiation Through Tardigrade DSUP. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:2053-2054. [PMID: 37613011 DOI: 10.1093/micmic/ozad067.1062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- B Hurley
- Malden Catholic High School, Malden, MA, USA
| | - J Gamitto
- Malden Catholic High School, Malden, MA, USA
| | - E Parker
- Malden Catholic High School, Malden, MA, USA
| | - S Salinas
- Malden Catholic High School, Malden, MA, USA
| | - G Gunning
- Malden Catholic High School, Malden, MA, USA
| | - E Buehler
- Masconomet Regional Middle School, Boxford, MA, USA
| | - S Abbas
- Malden Catholic High School, Malden, MA, USA
| | - D Shattuck
- St. Joseph School, Wakefield, MA, USA
- Laboratory for Atomistic and Molecular Mechanics, Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - M Buehler
- Laboratory for Atomistic and Molecular Mechanics, Civil and Environmental Engineering Department, Massachusetts Institute of Technology, Cambridge, MA, USA
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7
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Fleming JF. The wealth of shared resources: Improving molecular taxonomy using eDNA and public databases. ZOOL SCR 2023. [DOI: 10.1111/zsc.12591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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8
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Roszkowska M, Gołdyn B, Wojciechowska D, Księżkiewicz Z, Fiałkowska E, Pluskota M, Kmita H, Kaczmarek Ł. How long can tardigrades survive in the anhydrobiotic state? A search for tardigrade anhydrobiosis patterns. PLoS One 2023; 18:e0270386. [PMID: 36630322 PMCID: PMC9833599 DOI: 10.1371/journal.pone.0270386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 12/12/2022] [Indexed: 01/12/2023] Open
Abstract
Anhydrobiosis is a desiccation tolerance that denotes the ability to survive almost complete dehydration without sustaining damage. The knowledge on the survival capacity of various tardigrade species in anhydrobiosis is still very limited. Our research compares anhydrobiotic capacities of four tardigrade species from different genera, i.e. Echiniscus testudo, Paramacrobiotus experimentalis, Pseudohexapodibius degenerans and Macrobiotus pseudohufelandi, whose feeding behavior and occupied habitats are different. Additionally, in the case of Ech. testudo, we analyzed two populations: one urban and one from a natural habitat. The observed tardigrade species displayed clear differences in their anhydrobiotic capacity, which appear to be determined by the habitat rather than nutritional behavior of species sharing the same habitat type. The results also indicate that the longer the state of anhydrobiosis lasts, the more time the animals need to return to activity.
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Affiliation(s)
- Milena Roszkowska
- Faculty of Biology, Department of Animal Taxonomy and Ecology, Adam Mickiewicz University, Poznań, Poland
- Faculty of Biology, Department of Bioenergetics, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznań, Poland
| | - Bartłomiej Gołdyn
- Faculty of Biology, Department of General Zoology, Adam Mickiewicz University, Poznań, Poland
| | - Daria Wojciechowska
- Faculty of Physics, Department of Biomedical Physics, Adam Mickiewicz University, Poznań, Poland
| | - Zofia Księżkiewicz
- Faculty of Biology, Department of General Zoology, Adam Mickiewicz University, Poznań, Poland
| | - Edyta Fiałkowska
- Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland
| | - Mateusz Pluskota
- Faculty of Biology, Department of General Zoology, Adam Mickiewicz University, Poznań, Poland
| | - Hanna Kmita
- Faculty of Biology, Department of Bioenergetics, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznań, Poland
| | - Łukasz Kaczmarek
- Faculty of Biology, Department of Animal Taxonomy and Ecology, Adam Mickiewicz University, Poznań, Poland
- * E-mail:
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9
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Metivier JC, Chain FJJ. Diversity in Expression Biases of Lineage-Specific Genes During Development and Anhydrobiosis Among Tardigrade Species. Evol Bioinform Online 2022; 18:11769343221140277. [PMID: 36578471 PMCID: PMC9791283 DOI: 10.1177/11769343221140277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/27/2022] [Indexed: 12/24/2022] Open
Abstract
Lineage-specific genes can contribute to the emergence and evolution of novel traits and adaptations. Tardigrades are animals that have adapted to tolerate extreme conditions by undergoing a form of cryptobiosis called anhydrobiosis, a physical transformation to an inactive desiccated state. While studies to understand the genetics underlying the interspecies diversity in anhydrobiotic transitions have identified tardigrade-specific genes and family expansions involved in this process, the contributions of species-specific genes to the variation in tardigrade development and cryptobiosis are less clear. We used previously published transcriptomes throughout development and anhydrobiosis (5 embryonic stages, 7 juvenile stages, active adults, and tun adults) to assess the transcriptional biases of different classes of genes between 2 tardigrade species, Hypsibius exemplaris and Ramazzottius varieornatus. We also used the transcriptomes of 2 other tardigrades, Echiniscoides sigismundi and Richtersius coronifer, and data from 3 non-tardigrade species (Adenita vaga, Drosophila melanogaster, and Caenorhabditis elegans) to help identify lineage-specific genes. We found that lineage-specific genes have generally low and narrow expression but are enriched among biased genes in different stages of development depending on the species. Biased genes tend to be specific to early and late development, but there is little overlap in functional enrichment of biased genes between species. Gene expansions in the 2 tardigrades also involve families with different functions despite homologous genes being expressed during anhydrobiosis in both species. Our results demonstrate the interspecific variation in transcriptional contributions and biases of lineage-specific genes during development and anhydrobiosis in 2 tardigrades.
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Affiliation(s)
| | - Frédéric J J Chain
- Frédéric J J Chain, Department of Biological Sciences, University of Massachusetts Lowell, One University Ave, Lowell, MA 01854, USA.
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Cesari M, Giovannini I, Altiero T, Guidetti R, Cornette R, Kikawada T, Rebecchi L. Resistance to Extreme Stresses by a Newly Discovered Japanese Tardigrade Species, Macrobiotus kyoukenus (Eutardigrada, Macrobiotidae). INSECTS 2022; 13:insects13070634. [PMID: 35886811 PMCID: PMC9315711 DOI: 10.3390/insects13070634] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Tardigrades are small micrometazoans able to resist several environmental stresses in any stage of their life cycle. The integrated molecular and morphological analysis of tardigrade specimens collected in Tsukuba (Japan) revealed that this population represents a new species, Macrobiotus kyoukenus sp. nov., belonging to the genus Macrobiotus, one of the most speciose and widespread water bear taxon. The stress resistance capabilities of M. kyoukenus sp. nov. have been tested by submitting animals to extreme desiccation, rapid freezing, and high levels of ultraviolet radiations (UVB and UVC). Animals were able to survive desiccation and freezing, and both hydrated and desiccated animals showed a high tolerance to increasing UV radiations. Overall, our findings contribute to the discovery of a larger tardigrade biodiversity in Japan, and the tolerance capabilities of M. kyoukenus sp. nov. show that this new species could become an emerging model for stress resistance studies. Abstract Tardigrades are small micrometazoans able to resist several environmental stresses in any stage of their life cycle. An integrated analysis of tardigrade specimens collected in Tsukuba (Japan) revealed a peculiar morphology and a new sensory field in the cloaca. Molecular taxonomy and phylogenetic analysis on different genes (COI, ITS2, 18S and 28S) confirmed that this population is a new species, Macrobiotus kyoukenus sp. nov., belonging to the widespread Macrobiotus hufelandi group. The stress resistance capabilities of M. kyoukenus sp. nov. have been tested by submitting animals to extreme desiccation, rapid freezing, and high levels of ultraviolet radiations (UVB and UVC). Animals were able to survive desiccation (survivorship 95.71 ± 7.07%) and freezing up to −80 °C (82.33 ± 17.11%). Both hydrated and desiccated animals showed a high tolerance to increasing UV radiations: hydrated animals survived to doses up to 152.22 kJ m−2 (UVB) and up to 15.00 kJ m−2 (UVC), while desiccated specimens persisted to radiations up to 165.12 kJ m−2 (UVB) and up to 35.00 kJ m−2 (UVC). Present data contribute to the discovery of a larger tardigrade biodiversity in Japan, and the tolerance capabilities of M. kyoukenus sp. nov. show that it could become a new emerging model for stress resistance studies.
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Affiliation(s)
- Michele Cesari
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy; (M.C.); (R.G.); (L.R.)
| | - Ilaria Giovannini
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy; (M.C.); (R.G.); (L.R.)
- Department of Education and Humanities, University of Modena and Reggio Emilia, Viale Timavo, 93, 42121 Reggio Emilia, Italy;
- Correspondence:
| | - Tiziana Altiero
- Department of Education and Humanities, University of Modena and Reggio Emilia, Viale Timavo, 93, 42121 Reggio Emilia, Italy;
| | - Roberto Guidetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy; (M.C.); (R.G.); (L.R.)
| | - Richard Cornette
- Division of Biomaterial Sciences, National Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba 305-0851, Ibaraki, Japan; (R.C.); (T.K.)
| | - Takahiro Kikawada
- Division of Biomaterial Sciences, National Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba 305-0851, Ibaraki, Japan; (R.C.); (T.K.)
| | - Lorena Rebecchi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/d, 41125 Modena, Italy; (M.C.); (R.G.); (L.R.)
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11
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Møbjerg A, Kodama M, Ramos-Madrigal J, Neves RC, Jørgensen A, Schiøtt M, Gilbert MTP, Møbjerg N. Extreme freeze-tolerance in cryophilic tardigrades relies on controlled ice formation but does not involve significant change in transcription. Comp Biochem Physiol A Mol Integr Physiol 2022; 271:111245. [PMID: 35640792 DOI: 10.1016/j.cbpa.2022.111245] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 11/30/2022]
Abstract
Subzero temperatures are among the most significant factors defining the distribution of organisms, yet, certain taxa have evolved to overcome this barrier. The microscopic tardigrades are among the most freeze-tolerant animals, with selected species reported to survive milli-Kelvin temperatures. Here, we estimate survival of fully hydrated eutardigrades of the species Ramazzottius varieornatus following exposures to -20 °C and -80 °C as well as -196 °C with or without initial cooling to -80 °C. The tardigrades easily survive these temperatures, yet with a significant decrease in viability following rapid cooling by direct exposure to -196 °C. Hence, post-freeze recovery of R. varieornatus seems to rely on cooling rate and thus controlled ice formation. Cryophilic organisms are renowned for having cold-active enzymes that secure appropriate reaction rates at low temperatures. Hence, extreme freeze-tolerance in R. varieornatus could potentially involve syntheses of cryoprotectants and de novo transcription. We therefore generated a reference transcriptome for this cryophilic R. varieornatus population and explored for differential gene expression patterns following cooling to -80 °C as compared to active 5 °C controls. Specifically, we tested for fast transcription potentially occurring within 25 min of cooling from room temperature to a supercooling point of ca. -20 °C, at which the tardigrades presumably freeze and enter into the ametabolic state of cryobiosis. Our analyses revealed no evidence for differential gene expression. We, therefore, conclude that extreme freeze-tolerance in R. varieornatus relies on controlled extracellular freezing with any freeze-tolerance related genes being constitutively expressed.
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Affiliation(s)
- Ask Møbjerg
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark. https://twitter.com/askmobjerg
| | - Miyako Kodama
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Jazmín Ramos-Madrigal
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | | | - Aslak Jørgensen
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Morten Schiøtt
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - M Thomas P Gilbert
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark; University Museum, NTNU, Trondheim, Norway
| | - Nadja Møbjerg
- Department of Biology, University of Copenhagen, Copenhagen, Denmark.
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12
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Neves RC, Møbjerg A, Kodama M, Ramos-Madrigal J, Gilbert MTP, Møbjerg N. Differential expression profiling of heat stressed tardigrades reveals major shift in the transcriptome. Comp Biochem Physiol A Mol Integr Physiol 2022; 267:111169. [PMID: 35182765 DOI: 10.1016/j.cbpa.2022.111169] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/14/2022] [Accepted: 02/14/2022] [Indexed: 12/13/2022]
Abstract
Tardigrades are renowned for their extreme stress tolerance, which includes the ability to endure complete desiccation, high levels of radiation and very low sub-zero temperatures. Nevertheless, tardigrades appear to be vulnerable to high temperatures and thus the potential effects of global warming. Here, we provide the first analysis of transcriptome data obtained from heat stressed specimens of the eutardigrade Ramazzottius varieornatus, with the aim of providing new insights into the molecular processes affected by high temperatures. Specifically, we compare RNA-seq datasets obtained from active, heat-exposed (35 °C) tardigrades to that of active controls kept at 5 °C. Our data reveal a surprising shift in transcription, involving 9634 differentially expressed transcripts, corresponding to >35% of the transcriptome. The latter data are in striking contrast to the hitherto observed constitutive expression underlying tardigrade extreme stress tolerance and entrance into the latent state of life, known as cryptobiosis. Thus, when examining the molecular response, heat-stress appears to be more stressful for R. varieornatus than extreme conditions, such as desiccation or freezing. A gene ontology analysis reveals that the heat stress response involves a change in transcription and presumably translation, including an adjustment of metabolism, and, putatively, preparation for encystment and subsequent diapause. Among the differentially expressed transcripts we find heat-shock proteins as well as the eutardigrade specific proteins (CAHS, SAHS, MAHS, RvLEAM, and Dsup). The latter proteins thus seem to contribute to a general stress response, and may not be directly related to cryptobiosis.
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Affiliation(s)
| | - Ask Møbjerg
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Miyako Kodama
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Jazmín Ramos-Madrigal
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - M Thomas P Gilbert
- Center for Evolutionary Hologenomics, The Globe Institute, University of Copenhagen, Copenhagen, Denmark; University Museum, NTNU, Trondheim, Norway
| | - Nadja Møbjerg
- Department of Biology, University of Copenhagen, Copenhagen, Denmark.
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13
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Muvengwi J, Fritz H, Witkowski E. Do large termite mounds effect woody plant phylogenetic diversity and endemism across African savannas? DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- Justice Muvengwi
- Sustainability Research Unit Nelson Mandela University George South Africa
| | - Herve Fritz
- Sustainability Research Unit Nelson Mandela University George South Africa
- LTSER FranceZone Atelier “Hwange,” Hwange National Park Dete Zimbabwe
- CNRS HERD (Hwange Environmental Research Development) Program Dete Zimbabwe
| | - Ed Witkowski
- School of Animal, Plant and Environmental Sciences University of the Witwatersrand Johannesburg South Africa
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14
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Giovannini I, Boothby TC, Cesari M, Goldstein B, Guidetti R, Rebecchi L. Production of reactive oxygen species and involvement of bioprotectants during anhydrobiosis in the tardigrade Paramacrobiotus spatialis. Sci Rep 2022; 12:1938. [PMID: 35121798 PMCID: PMC8816950 DOI: 10.1038/s41598-022-05734-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/06/2021] [Indexed: 12/30/2022] Open
Abstract
Water unavailability is an abiotic stress causing unfavourable conditions for life. Nevertheless, some animals evolved anhydrobiosis, a strategy allowing for the reversible organism dehydration and suspension of metabolism as a direct response to habitat desiccation. Anhydrobiotic animals undergo biochemical changes synthesizing bioprotectants to help combat desiccation stresses. One stress is the generation of reactive oxygen species (ROS). In this study, the eutardigrade Paramacrobiotus spatialis was used to investigate the occurrence of ROS associated with the desiccation process. We observed that the production of ROS significantly increases as a function of time spent in anhydrobiosis and represents a direct demonstration of oxidative stress in tardigrades. The degree of involvement of bioprotectants, including those combating ROS, in the P. spatialis was evaluated by perturbing their gene functions using RNA interference and assessing the successful recovery of animals after desiccation/rehydration. Targeting the glutathione peroxidase gene compromised survival during drying and rehydration, providing evidence for the role of the gene in desiccation tolerance. Targeting genes encoding glutathione reductase and catalase indicated that these molecules play roles during rehydration. Our study also confirms the involvement of aquaporins 3 and 10 during rehydration. Therefore, desiccation tolerance depends on the synergistic action of many different molecules working together.
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Affiliation(s)
- Ilaria Giovannini
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy.
| | - Thomas C Boothby
- Department of Molecular Biology, University of Wyoming, Laramie, WY, USA.,Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michele Cesari
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
| | - Bob Goldstein
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Roberto Guidetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
| | - Lorena Rebecchi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
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15
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Stephan T, Burgess SM, Cheng H, Danko CG, Gill CA, Jarvis ED, Koepfli KP, Koltes JE, Lyons E, Ronald P, Ryder OA, Schriml LM, Soltis P, VandeWoude S, Zhou H, Ostrander EA, Karlsson EK. Darwinian genomics and diversity in the tree of life. Proc Natl Acad Sci U S A 2022; 119:e2115644119. [PMID: 35042807 PMCID: PMC8795533 DOI: 10.1073/pnas.2115644119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Genomics encompasses the entire tree of life, both extinct and extant, and the evolutionary processes that shape this diversity. To date, genomic research has focused on humans, a small number of agricultural species, and established laboratory models. Fewer than 18,000 of ∼2,000,000 eukaryotic species (<1%) have a representative genome sequence in GenBank, and only a fraction of these have ancillary information on genome structure, genetic variation, gene expression, epigenetic modifications, and population diversity. This imbalance reflects a perception that human studies are paramount in disease research. Yet understanding how genomes work, and how genetic variation shapes phenotypes, requires a broad view that embraces the vast diversity of life. We have the technology to collect massive and exquisitely detailed datasets about the world, but expertise is siloed into distinct fields. A new approach, integrating comparative genomics with cell and evolutionary biology, ecology, archaeology, anthropology, and conservation biology, is essential for understanding and protecting ourselves and our world. Here, we describe potential for scientific discovery when comparative genomics works in close collaboration with a broad range of fields as well as the technical, scientific, and social constraints that must be addressed.
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Affiliation(s)
- Taylorlyn Stephan
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20817
| | - Shawn M Burgess
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20817
| | - Hans Cheng
- Avian Disease and Oncology Laboratory, Agricultural Research Service, US Department of Agriculture, East Lansing, MI 48823
| | - Charles G Danko
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14850
| | - Clare A Gill
- Department of Animal Science, Texas A&M University, College Station, TX 77843
| | - Erich D Jarvis
- Laboratory of Neurogenetics of Language, The Rockefeller University, New York, NY 10065
- HHMI, Chevy Chase, MD 20815
| | - Klaus-Peter Koepfli
- Smithsonian-Mason School of Conservation, George Mason University, Front Royal, VA 22630
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC 20008
| | - James E Koltes
- Department of Animal Science, Iowa State University, Ames, IA 50011
| | - Eric Lyons
- School of Plant Sciences, BIO5 Institute, University of Arizona, Tucson, AZ 85721
| | - Pamela Ronald
- Department of Plant Pathology, University of California, Davis, CA 95616
- The Genome Center, University of California, Davis, CA 95616
- The Innovative Genomics Institute, University of California, Berkeley, CA 94720
- Grass Genetics, Joint Bioenergy Institute, Emeryville, CA 94608
| | - Oliver A Ryder
- San Diego Zoo Wildlife Alliance, Escondido, CA 92027
- Department of Evolution, Behavior, and Ecology, University of California San Diego, La Jolla, CA 92093
| | - Lynn M Schriml
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD 21201
| | - Pamela Soltis
- Florida Museum of Natural History, University of Florida, Gainesville, FL 32611
| | - Sue VandeWoude
- Department of Micro-, Immuno-, and Pathology, Colorado State University, Fort Collins, CO 80532
| | - Huaijun Zhou
- Department of Animal Science, University of California, Davis, CA 95616
| | - Elaine A Ostrander
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20817
| | - Elinor K Karlsson
- Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, MA 01655;
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01655
- Broad Institute of MIT and Harvard, Cambridge, MA 02142
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16
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Linan AG, Myers JA, Edwards CE, Zanne AE, Smith SA, Arellano G, Cayola L, Farfan-Ríos W, Fuentes AF, García-Cabrera K, González-Caro S, Loza MI, Macía MJ, Malhi Y, Nieto-Ariza B, Salinas N, Silman M, Tello JS. The evolutionary assembly of forest communities along environmental gradients: recent diversification or sorting of pre-adapted clades? THE NEW PHYTOLOGIST 2021; 232:2506-2519. [PMID: 34379801 DOI: 10.1111/nph.17674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Recent studies have demonstrated that ecological processes that shape community structure and dynamics change along environmental gradients. However, much less is known about how the emergence of the gradients themselves shape the evolution of species that underlie community assembly. In this study, we address how the creation of novel environments leads to community assembly via two nonmutually exclusive processes: immigration and ecological sorting of pre-adapted clades (ISPC), and recent adaptive diversification (RAD). We study these processes in the context of the elevational gradient created by the uplift of the Central Andes. We develop a novel approach and method based on the decomposition of species turnover into within- and among-clade components, where clades correspond to lineages that originated before mountain uplift. Effects of ISPC and RAD can be inferred from how components of turnover change with elevation. We test our approach using data from over 500 Andean forest plots. We found that species turnover between communities at different elevations is dominated by the replacement of clades that originated before the uplift of the Central Andes. Our results suggest that immigration and sorting of clades pre-adapted to montane habitats is the primary mechanism shaping tree communities across elevations.
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Affiliation(s)
- Alexander G Linan
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
| | - Jonathan A Myers
- Department of Biology, Washington University in St Louis, St Louis, MO, 63130, USA
| | - Christine E Edwards
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
| | - Amy E Zanne
- Department of Biological Sciences, The George Washington University, Washington, DC, 20052, USA
| | - Stephen A Smith
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Gabriel Arellano
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Leslie Cayola
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
- Herbario Nacional de Bolivia, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - William Farfan-Ríos
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
- Department of Biology, Washington University in St Louis, St Louis, MO, 63130, USA
| | - Alfredo F Fuentes
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
- Herbario Nacional de Bolivia, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Karina García-Cabrera
- Escuela Profesional de Biología, Universidad Nacional de San Antonio Abad del Cusco, Cusco, Peru
| | - Sebastián González-Caro
- Departamento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Universidad Nacional de Colombia, Medellín, Colombia
| | - M Isabel Loza
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
- Herbario Nacional de Bolivia, Universidad Mayor de San Andrés, La Paz, Bolivia
- Department of Biology, University of Missouri-St Louis, St Louis, MO, 63121, USA
| | - Manuel J Macía
- Departamento de Biología, Área de Botánica, Universidad Autónoma de Madrid, Madrid, Spain
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid, Madrid, Spain
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | | | - Norma Salinas
- Institute for Nature Earth and Energy, Pontificia Universidad Catolica del Peru, Lima, Peru
| | - Miles Silman
- Center for Energy, Environment and Sustainability, Winston-Salem, NC, 27109, USA
| | - J Sebastián Tello
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, 63110, USA
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17
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Vecchi M, Kossi Adakpo L, Dunn RR, Nichols LM, Penick CA, Sanders NJ, Rebecchi L, Guidetti R. The toughest animals of the Earth versus global warming: Effects of long-term experimental warming on tardigrade community structure of a temperate deciduous forest. Ecol Evol 2021; 11:9856-9863. [PMID: 34306668 PMCID: PMC8293726 DOI: 10.1002/ece3.7816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/10/2021] [Accepted: 06/02/2021] [Indexed: 12/05/2022] Open
Abstract
Understanding how different taxa respond to global warming is essential for predicting future changes and elaborating strategies to buffer them. Tardigrades are well known for their ability to survive environmental stressors, such as drying and freezing, by undergoing cryptobiosis and rapidly recovering their metabolic function after stressors cease. Determining the extent to which animals that undergo cryptobiosis are affected by environmental warming will help to understand the real magnitude climate change will have on these organisms. Here, we report on the responses of tardigrades within a five-year-long, field-based artificial warming experiment, which consisted of 12 open-top chambers heated to simulate the projected effects of global warming (ranging from 0 to 5.5°C above ambient temperature) in a temperate deciduous forest of North Carolina (USA). To elucidate the effects of warming on the tardigrade community inhabiting the soil litter, three community diversity indices (abundance, species richness, and Shannon diversity) and the abundance of the three most abundant species (Diphascon pingue, Adropion scoticum, and Mesobiotus sp.) were determined. Their relationships with air temperature, soil moisture, and the interaction between air temperature and soil moisture were tested using Bayesian generalized linear mixed models. Despite observed negative effects of warming on other ground invertebrates in previous studies at this site, long-term warming did not affect the abundance, richness, or diversity of tardigrades in this experiment. These results are in line with previous experimental studies, indicating that tardigrades may not be directly affected by ongoing global warming, possibly due to their thermotolerance and cryptobiotic abilities to avoid negative effects of stressful temperatures, and the buffering effect on temperature of the soil litter substrate.
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Affiliation(s)
- Matteo Vecchi
- Department of Biological and Environmental ScienceUniversity of JyvaskylaJyvaskylaFinland
| | | | - Robert R. Dunn
- Department of Applied EcologyNorth Carolina State UniversityRaleighNCUSA
- Center for Evolutionary HologenomicsUniversity of CopenhagenCopenhagenDenmark
| | - Lauren M. Nichols
- Department of Applied EcologyNorth Carolina State UniversityRaleighNCUSA
| | - Clint A. Penick
- Department of Ecology, Evolution, and Organismal BiologyKennesaw State UniversityKennesawGAUSA
| | - Nathan J. Sanders
- Department of Ecology and Evolutionary BiologyUniversity of MichiganAnn ArborMIUSA
| | - Lorena Rebecchi
- Department of Life SciencesUniversity of Modena and Reggio EmiliaModenaItaly
| | - Roberto Guidetti
- Department of Life SciencesUniversity of Modena and Reggio EmiliaModenaItaly
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18
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New insights into survival strategies of tardigrades. Comp Biochem Physiol A Mol Integr Physiol 2021; 254:110890. [DOI: 10.1016/j.cbpa.2020.110890] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/21/2020] [Accepted: 12/21/2020] [Indexed: 12/20/2022]
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19
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Roszkowska M, Wojciechowska D, Kmita H, Cerbin S, Dziuba MK, Fiałkowska E, Sobkowiak R, Szydło W, Kaczmarek Ł. Tips and tricks how to culture water bears: simple protocols for culturing eutardigrades (Tardigrada) under laboratory conditions. THE EUROPEAN ZOOLOGICAL JOURNAL 2021. [DOI: 10.1080/24750263.2021.1881631] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- M. Roszkowska
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
- Department of Bioenergetics, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - D. Wojciechowska
- Department of Bioenergetics, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - H. Kmita
- Department of Bioenergetics, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - S. Cerbin
- Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - M. K. Dziuba
- Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - E. Fiałkowska
- Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Krakow, Poland
| | - R. Sobkowiak
- Department of Cell Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - W. Szydło
- Center for Advanced Technology, Adam Mickiewicz University, Poznań, Poland
- Population Ecology Lab, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Ł. Kaczmarek
- Department of Animal Taxonomy and Ecology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
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20
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Zea L, McLean RJ, Rook TA, Angle G, Carter DL, Delegard A, Denvir A, Gerlach R, Gorti S, McIlwaine D, Nur M, Peyton BM, Stewart PS, Sturman P, Velez Justiniano YA. Potential biofilm control strategies for extended spaceflight missions. Biofilm 2020; 2:100026. [PMID: 33447811 PMCID: PMC7798464 DOI: 10.1016/j.bioflm.2020.100026] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 05/08/2020] [Accepted: 05/24/2020] [Indexed: 01/10/2023] Open
Abstract
Biofilms, surface-adherent microbial communities, are associated with microbial fouling and corrosion in terrestrial water-distribution systems. Biofilms are also present in human spaceflight, particularly in the Water Recovery System (WRS) on the International Space Station (ISS). The WRS is comprised of the Urine Processor Assembly (UPA) and the Water Processor Assembly (WPA) which together recycles wastewater from human urine and recovered humidity from the ISS atmosphere. These wastewaters and various process streams are continually inoculated with microorganisms primarily arising from the space crew microbiome. Biofilm-related fouling has been encountered and addressed in spacecraft in low Earth orbit, including ISS and the Russian Mir Space Station. However, planned future missions beyond low Earth orbit to the Moon and Mars present additional challenges, as resupplying spare parts or support materials would be impractical and the mission timeline would be in the order of years in the case of a mission to Mars. In addition, future missions are expected to include a period of dormancy in which the WRS would be unused for an extended duration. The concepts developed in this review arose from a workshop including NASA personnel and representatives with biofilm expertise from a wide range of industrial and academic backgrounds. Here, we address current strategies that are employed on Earth for biofilm control, including antifouling coatings and biocides and mechanisms for mitigating biofilm growth and damage. These ideas are presented in the context of their applicability to spaceflight and identify proposed new topics of biofilm control that need to be addressed in order to facilitate future extended, crewed, spaceflight missions.
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Affiliation(s)
- Luis Zea
- BioServe Space Technologies, University of Colorado, Boulder, CO, USA
| | | | | | | | | | | | | | - Robin Gerlach
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Sridhar Gorti
- NASA Marshall Spaceflight Center, Huntsville, AL, USA
| | | | - Mononita Nur
- NASA Marshall Spaceflight Center, Huntsville, AL, USA
| | - Brent M. Peyton
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Philip S. Stewart
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
| | - Paul Sturman
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, USA
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21
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Hibshman JD, Clegg JS, Goldstein B. Mechanisms of Desiccation Tolerance: Themes and Variations in Brine Shrimp, Roundworms, and Tardigrades. Front Physiol 2020; 11:592016. [PMID: 33192606 PMCID: PMC7649794 DOI: 10.3389/fphys.2020.592016] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/25/2020] [Indexed: 01/05/2023] Open
Abstract
Water is critical for the survival of most cells and organisms. Remarkably, a small number of multicellular animals are able to survive nearly complete drying. The phenomenon of anhydrobiosis, or life without water, has been of interest to researchers for over 300 years. In this review we discuss advances in our understanding of protectants and mechanisms of desiccation tolerance that have emerged from research in three anhydrobiotic invertebrates: brine shrimp (Artemia), roundworms (nematodes), and tardigrades (water bears). Discovery of molecular protectants that allow each of these three animals to survive drying diversifies our understanding of desiccation tolerance, and convergent themes suggest mechanisms that may offer a general model for engineering desiccation tolerance in other contexts.
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Affiliation(s)
- Jonathan D. Hibshman
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - James S. Clegg
- Bodega Marine Laboratory, University of California, Davis, Davis, CA, United States
| | - Bob Goldstein
- Department of Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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22
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Neves RC, Stuart RM, Møbjerg N. New insights into the limited thermotolerance of anhydrobiotic tardigrades. Commun Integr Biol 2020; 13:140-146. [PMID: 33014266 PMCID: PMC7518453 DOI: 10.1080/19420889.2020.1812865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The recent discovery of an upper limit in the tolerance of an extremotolerant tardigrade to high temperatures is astounding. Although these microinvertebrates are able to endure severe environmental conditions, including desiccation, freezing and high levels of radiation, high temperatures seem to be an Achilles’ heel for active tardigrades. Moreover, exposure-time appears to be a limiting factor for the heat stress tolerance of the otherwise highly resilient desiccated (anhydrobiotic) tardigrades. Indeed, the survival rate of desiccated tardigrades exposed to high temperatures for 24 hours is significantly lower than for exposures of only 1 hour. Here, we investigate the effect of 1 week of high temperature exposures on desiccated tardigrades with the aim of elucidating whether exposure-times longer than 24 hours decrease survival even further. From our analyses we estimate a significant decrease in the 50% mortality temperature from 63ºC to 56ºC for Ramazzottius varieornatus exposed to high temperatures in the desiccated tun state for 24 hours and 1 week, respectively. This negative correlation between exposure-time and tolerance to high temperatures probably results from the interference of intracellular temperature with the homeostasis of macromolecules. We hypothesize that high temperatures denature molecules that play a vital role in sustaining and protecting the anhydrobiotic state.
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Affiliation(s)
- Ricardo Cardoso Neves
- Department of Biology, August Krogh Building, University of Copenhagen, Copenhagen, Denmark
| | - Robyn M Stuart
- Data Science Laboratory, Department of Mathematical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nadja Møbjerg
- Department of Biology, August Krogh Building, University of Copenhagen, Copenhagen, Denmark
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23
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Han J, Lee JS, Park JC, Hagiwara A, Lee KW, Lee JS. Effects of temperature changes on life parameters, oxidative stress, and antioxidant defense system in the monogonont marine rotifer Brachionus plicatilis. MARINE POLLUTION BULLETIN 2020; 155:111062. [PMID: 32469753 DOI: 10.1016/j.marpolbul.2020.111062] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/02/2020] [Accepted: 03/10/2020] [Indexed: 06/11/2023]
Abstract
Global warming is a big concern for all organisms and many efforts have been made to reveal the potential effects of temperature elevation on aquatic organisms. However, limited studies on molecular mechanistic approaches on physiological effects due to temperature changes are available. Here, we investigated the effects of temperature changes on life parameters (e.g., population growth [total number of rotifers], and lifespan), oxidative stress levels and antioxidant activities (e.g., glutathione S-transferase [GST], catalase [CAT], superoxide dismutase [SOD]) with expression levels in the monogonont marine rotifer Brachionus plicatilis. The changes in temperatures led to significant reduction (P < 0.05) in lifespan, possibly due to significant decrease (P < 0.05) in antioxidant activities, reducing the potential to cope with significant elevation in the temperature-induced oxidative stress in B. plicatilis. To further assess the actual induction and clearance of reactive oxygen species (ROS), N-acetyl-L-cysteine was used to examine whether the temperature-induced oxidative stress could be successfully scavenged. Furthermore, expression patterns of the antioxidant-related genes (GSTs, SODs, and CATs) were down- or upregulated (P < 0.05) in response to different temperatures in B. plicatilis. Overall, these findings indicate that ROS-mediated oxidative stress led to cellular damage and antioxidant defense system, resulting in deleterious effects on life parameters in rotifer.
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Affiliation(s)
- Jeonghoon Han
- Department of Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, South Korea; Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jin-Sol Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Jun Chul Park
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Atsushi Hagiwara
- Institute of Integrated Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan; Organization for Marine Science and Technology, Nagasaki University, Nagasaki 852-8521, Japan
| | - Kyun-Woo Lee
- Department of Marine Biotechnology Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, South Korea.
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon 16419, South Korea.
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24
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Møbjerg N, Michalczyk Ł, Mcinnes SJ, Christenhusz MJM. Research presented at the 14th International Symposium on Tardigrada: progress in studies on water bears. Zool J Linn Soc 2020. [DOI: 10.1093/zoolinnean/zlaa008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AbstractThe 14th International Symposium on Tardigrada took place in Copenhagen, Denmark from 30 July to 3 August 2018. Approximately 140 participants, representing 28 countries from five continents attended the meeting, and there were 58 talks and 74 posters of which 20 were selected for the Symposium Proceedings published in this special issue. The studies span phylogenomics, systematics, anatomy, morphology, reproductive biology, cryobiology, ecology, diet, microbial interactions and biogeography, taking the next step forward in broadening and deepening our understanding of tardigrade biology.
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Affiliation(s)
- Nadja Møbjerg
- Department of Biology, August Krogh Building, University of Copenhagen, Copenhagen, Denmark
| | - Łukasz Michalczyk
- Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Sandra J Mcinnes
- British Antarctic Survey, Programme Office, High Cross, Cambridge, UK
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