1
|
Duan Y, Li Y, Chen B, Ai C, Wu J. Preparation and performance evaluation of a novel temperature-resistant anionic/nonionic surfactant. Sci Rep 2024; 14:5710. [PMID: 38459239 PMCID: PMC10923936 DOI: 10.1038/s41598-024-56342-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 03/05/2024] [Indexed: 03/10/2024] Open
Abstract
Aiming at oil extraction from a tight reservoir, the Jilin oil field was selected as the research object of this study. Based on the molecular structures of conventional long-chain alkyl anionic surfactants, a new temperature-resistant anionic/nonionic surfactant (C8P10E5C) was prepared by introducing polyoxyethylene and polyoxypropylene units into double-chain alcohols. The resulting structures were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (1H-NMR), and electrospray ionization mass spectrometry (ESI-MS). Then, based on surface tension, interfacial tension, adsorption resistance, wettability, and emulsification performance tests, the performance of C8P10E5C was evaluated. The FT-IR, ESI-MS, and NMR spectra confirmed that C8P10E5C was successfully prepared. The critical micelle concentration (CMC) of C8P10E5C in water was 2.9510 × 10-4 mol/L (the corresponding mass concentration is 0.26%), and the surface tension of the aqueous C8P10E5C solution at this concentration was 30.5728 mN/m. At 0.3% concentration, the contact angle of the C8P10E5C solution was 31.4°, which is 60.75% lower than the initial contact angle. Under high-temperature conditions, C8P10E5C can still reduce the oil-water interfacial tension to 10-2 mN/m, exhibiting good temperature resistance. At 110 °C, upon adsorption to oil sand, the C8P10E5C solution could reduce the oil-water interfacial tension to 0.0276 mN/m, and the interfacial tension can still reach the order of 10-2 mN/m, indicating that C8P10E5C has strong anti-adsorption capability. Additionally, it has good emulsifying performance; upon forming an emulsion with crude oil, the highest drainage rate was only 50%. The forced imbibition oil recovery of C8P10E5C is 65.8%, which is 38.54, 24.22, and 27.25% higher than those of sodium dodecyl benzene sulfonate, alkyl polyoxyethylene ether carboxylate, and alkyl ether carboxylate, respectively.
Collapse
Affiliation(s)
- Yongwei Duan
- College of Petroleum Engineering, Northeast Petroleum University, Daqing, 163318, China
- Jilin Oilfield Oil & Gas Engineering Research Institute, Songyuan, 138000, China
| | - Yanpeng Li
- Songyuan Gas Production Plant of Jilin Oilfield Company of PetroChina, Songyuan, 138000, China
| | - Boru Chen
- Songyuan Gas Production Plant of Jilin Oilfield Company of PetroChina, Songyuan, 138000, China
| | - Chi Ai
- College of Petroleum Engineering, Northeast Petroleum University, Daqing, 163318, China.
| | - Jun Wu
- Jilin Oilfield Oil & Gas Engineering Research Institute, Songyuan, 138000, China
| |
Collapse
|
2
|
Pacher K, Hernández-Román N, Juarez-Lopez A, Jiménez-Jiménez JE, Lukas J, Sevinchan Y, Krause J, Arias-Rodríguez L, Bierbach D. Thermal tolerance in an extremophile fish from Mexico is not affected by environmental hypoxia. Biol Open 2024; 13:bio060223. [PMID: 38314873 PMCID: PMC10868586 DOI: 10.1242/bio.060223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 02/07/2024] Open
Abstract
The thermal ecology of ectotherm animals has gained considerable attention in the face of human-induced climate change. Particularly in aquatic species, the experimental assessment of critical thermal limits (CTmin and CTmax) may help to predict possible effects of global warming on habitat suitability and ultimately species survival. Here we present data on the thermal limits of two endemic and endangered extremophile fish species, inhabiting a geothermally heated and sulfur-rich spring system in southern Mexico: The sulfur molly (Poecilia sulphuraria) and the widemouth gambusia (Gambusia eurystoma). Besides physiological challenges induced by toxic hydrogen sulfide and related severe hypoxia during the day, water temperatures have been previously reported to exceed those of nearby clearwater streams. We now present temperature data for various locations and years in the sulfur spring complex and conducted laboratory thermal tolerance tests (CTmin and CTmax) both under normoxic and severe hypoxic conditions in both species. Average CTmax limits did not differ between species when dissolved oxygen was present. However, critical temperature (CTmax=43.2°C) in P. sulphuraria did not change when tested under hypoxic conditions, while G. eurystoma on average had a lower CTmax when oxygen was absent. Based on this data we calculated both species' thermal safety margins and used a TDT (thermal death time) model framework to relate our experimental data to observed temperatures in the natural habitat. Our findings suggest that both species live near their thermal limits during the annual dry season and are locally already exposed to temperatures above their critical thermal limits. We discuss these findings in the light of possible physiological adaptions of the sulfur-adapted fish species and the anthropogenic threats for this unique system.
Collapse
Affiliation(s)
- Korbinian Pacher
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12487 Berlin, Germany
- Faculty of Life Sciences, Albrecht Daniel Thaer-Institute, Humboldt University of Berlin, 10115 Berlin, Germany
| | - Natalia Hernández-Román
- División Académica de Ciencias Biológicas, Universidad Juárez Autónoma Tabasco, 86150 Villahermosa, Mexico
| | - Alejandro Juarez-Lopez
- División Académica de Ciencias Biológicas, Universidad Juárez Autónoma Tabasco, 86150 Villahermosa, Mexico
| | | | - Juliane Lukas
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12487 Berlin, Germany
- Faculty of Life Sciences, Albrecht Daniel Thaer-Institute, Humboldt University of Berlin, 10115 Berlin, Germany
| | - Yunus Sevinchan
- Science of intelligence cluster has the state of a department at TU Berlin, Excellence Cluster Science of Intelligence, Technische Universität Berlin, 10587 Berlin, Germany
| | - Jens Krause
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12487 Berlin, Germany
- Faculty of Life Sciences, Albrecht Daniel Thaer-Institute, Humboldt University of Berlin, 10115 Berlin, Germany
- Science of intelligence cluster has the state of a department at TU Berlin, Excellence Cluster Science of Intelligence, Technische Universität Berlin, 10587 Berlin, Germany
| | - Lenin Arias-Rodríguez
- División Académica de Ciencias Biológicas, Universidad Juárez Autónoma Tabasco, 86150 Villahermosa, Mexico
| | - David Bierbach
- Department of Biology and Ecology of Fishes, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12487 Berlin, Germany
- Faculty of Life Sciences, Albrecht Daniel Thaer-Institute, Humboldt University of Berlin, 10115 Berlin, Germany
- Science of intelligence cluster has the state of a department at TU Berlin, Excellence Cluster Science of Intelligence, Technische Universität Berlin, 10587 Berlin, Germany
| |
Collapse
|
3
|
Zhao W, Zhou H, Li W, Chen M, Zhou M, Zhao L. An Environment-Tolerant Ion-Conducting Double-Network Composite Hydrogel for High-Performance Flexible Electronic Devices. Nanomicro Lett 2024; 16:99. [PMID: 38285132 PMCID: PMC10825113 DOI: 10.1007/s40820-023-01311-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/05/2023] [Indexed: 01/30/2024]
Abstract
High-performance ion-conducting hydrogels (ICHs) are vital for developing flexible electronic devices. However, the robustness and ion-conducting behavior of ICHs deteriorate at extreme temperatures, hampering their use in soft electronics. To resolve these issues, a method involving freeze-thawing and ionizing radiation technology is reported herein for synthesizing a novel double-network (DN) ICH based on a poly(ionic liquid)/MXene/poly(vinyl alcohol) (PMP DN ICH) system. The well-designed ICH exhibits outstanding ionic conductivity (63.89 mS cm-1 at 25 °C), excellent temperature resistance (- 60-80 °C), prolonged stability (30 d at ambient temperature), high oxidation resistance, remarkable antibacterial activity, decent mechanical performance, and adhesion. Additionally, the ICH performs effectively in a flexible wireless strain sensor, thermal sensor, all-solid-state supercapacitor, and single-electrode triboelectric nanogenerator, thereby highlighting its viability in constructing soft electronic devices. The highly integrated gel structure endows these flexible electronic devices with stable, reliable signal output performance. In particular, the all-solid-state supercapacitor containing the PMP DN ICH electrolyte exhibits a high areal specific capacitance of 253.38 mF cm-2 (current density, 1 mA cm-2) and excellent environmental adaptability. This study paves the way for the design and fabrication of high-performance multifunctional/flexible ICHs for wearable sensing, energy-storage, and energy-harvesting applications.
Collapse
Affiliation(s)
- Wenchao Zhao
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Haifeng Zhou
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Wenkang Li
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Manlin Chen
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Min Zhou
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Long Zhao
- State Key Laboratory of Advanced Electromagnetic Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China.
| |
Collapse
|
4
|
Chessa C, Susca T. Development of an LCA characterization factor to account UHI local effect on terrestrial ecosystems damage category: Evaluation of European Bombus and Onthophagus genera heat-stress mortality. Sci Total Environ 2023; 897:165183. [PMID: 37385499 DOI: 10.1016/j.scitotenv.2023.165183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/09/2023] [Accepted: 06/26/2023] [Indexed: 07/01/2023]
Abstract
Life Cycle Assessment as currently implemented fails in detecting and measuring the interactions between urban climate and built environment, specifically the urban heat island, providing potentially misleading results. The present study offers an advancement in Life Cycle Assessment methodology, and specifically in ReCiPe2016 method, by (a) suggesting the implementation of the Local Warming Potential midpoint impact category where the variation of urban temperature converges; (b) developing a new characterization factor through the definition of damage pathways to assess the effect of urban heat island on terrestrial ecosystems damage category, specifically on European Bombus and Onthophagus genera; (c) defining local endpoint damage categories where environmental local impacts can be addressed. The developed characterization factor has been applied to the case study of an urban area in Rome, Italy. The results show that the evaluation of the effects of urban overheating on local terrestrial ecosystems is meaningful and may support urban decision-makers who want to holistically assess urban plans.
Collapse
Affiliation(s)
| | - Tiziana Susca
- ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Department Unit for Energy Efficiency, Italy.
| |
Collapse
|
5
|
Di Cicco M, Di Lorenzo T, Fiasca B, Galmarini E, Vaccarelli I, Cerasoli F, Tabilio Di Camillo A, Galassi DMP. Some like it hot: Thermal preference of the groundwater amphipod Niphargus longicaudatus (Costa, 1851) and climate change implications. J Therm Biol 2023; 116:103654. [PMID: 37478581 DOI: 10.1016/j.jtherbio.2023.103654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/21/2023] [Accepted: 06/29/2023] [Indexed: 07/23/2023]
Abstract
Groundwater is a crucial resource for humans and the environment, but its global human demand currently exceeds available volumes by 3.5 times. Climate change is expected to exacerbate this situation by increasing the frequency of droughts along with human impacts on groundwater ecosystems. Despite prior research on the quantitative effects of climate change on groundwater, the direct impacts on groundwater biodiversity, especially obligate groundwater species, remain largely unexplored. Therefore, investigating the potential impacts of climate change, including groundwater temperature changes, is crucial for the survival of obligate groundwater species. This study aimed to determine the thermal niche breadth of the crustacean amphipod species Niphargus longicaudatus by using the chronic method. We found that N. longicaudatus has a wide thermal niche with a natural performance range of 7-9 °C, which corresponds to the thermal regime this species experiences within its distribution range in Italy. The observed range of preferred temperature (PT) was different from the mean annual temperature of the sites from which the species has been collected, challenging the idea that groundwater species are only adapted to narrow temperature ranges. Considering the significant threats of climate change to groundwater ecosystems, these findings provide crucial information for the conservation of obligate groundwater species, suggesting that some of them may be more resilient to temperature changes than previously thought. Understanding the fundamental thermal niche of these species can inform conservation efforts and management strategies to protect groundwater ecosystems and their communities.
Collapse
Affiliation(s)
- Mattia Di Cicco
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy.
| | - Tiziana Di Lorenzo
- National Biodiversity Future Center, Palermo, Italy; IRET-CNR, Istituto di Ricerca Sugli Ecosistemi Terrestri Del CNR, Florence, Italy; Racovitza Institute of Speleology, Romanian Academy, Clinicilor 400006 Cluj Napoca, Romania; Departamento de Biologia Animal, Faculdade de Ciências, Centre for, Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal. 4 Natural History Museum of Denmark
| | - Barbara Fiasca
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy
| | - Emma Galmarini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy
| | - Ilaria Vaccarelli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy; University Institute of Higher Studies in Pavia, Pavia, Italy
| | - Francesco Cerasoli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy
| | - Agostina Tabilio Di Camillo
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy; IRET-CNR, Istituto di Ricerca Sugli Ecosistemi Terrestri Del CNR, Florence, Italy
| | - Diana Maria Paola Galassi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy
| |
Collapse
|
6
|
Paul K, Gaikwad M, Choudhary P, Mohan N, Pai P, Patil SD, Pawar Y, Chawande A, Banerjee A, Nagle V, Chelliah M, Sapre A, Dasgupta S. Year-round sustainable biomass production potential of Nannochloris sp. in outdoor raceway pond enabled through strategic photobiological screening. Photosynth Res 2022; 154:303-328. [PMID: 36434418 DOI: 10.1007/s11120-022-00984-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
Microalgae cultivation utilizes the energy of sunlight to reduce carbon dioxide (CO2) for producing renewable energy feedstock. The commercial success of the biological fixation of carbon in a consistent manner depends upon the availability of a robust microalgae strain. In the present work, we report the identification of a novel marine Nannochloris sp. through multiparametric photosynthetic evaluation. Detailed photobiological analysis of this strain has revealed a smaller functional antenna, faster relaxation kinetics of non-photochemical quenching, and a high photosynthetic rate with increasing light and temperatures. Furthermore, laboratory scale growth assessment demonstrated a broad range halotolerance of 10-70 parts per thousand (PPT) and high-temperature tolerance up to 45 °C. Such traits led to the translation of biomass productivity potential from the laboratory scale (0.2-3.0 L) to the outdoor 50,000 L raceway pond scale (500-m2) without any pond crashes. The current investigation revealed outdoor single-day peak areal biomass productivity of 43 g m-2 d-1 in summer with an annual (March 2019-February 2020) average productivity of 20 g m-2 d-1 in seawater. From a sustainability perspective, this is the first report of successful round-the-year (> 347 days) multi-season (summer, monsoon, and winter) outdoor cultivation of Nannochloris sp. in broad seawater salinity (1-57 PPT), wide temperature ranges (15-40 °C), and in fluctuating light conditions. Concurrently, outdoor cultivation of this strain demonstrated conducive fatty acid distribution, including increased unsaturated fatty acids in winter. This inherent characteristic might play a role in protecting photosynthesis machinery at low temperatures and in high light stress. Altogether, our marine Nannochloris sp. showed tremendous potential for commercial scale cultivation to produce biofuels, food ingredients, and a sustainable source for vegetarian protein.
Collapse
Affiliation(s)
- Kenny Paul
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Mahadev Gaikwad
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | | | | | - Puja Pai
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Smita D Patil
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Yogesh Pawar
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Akshay Chawande
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Arun Banerjee
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India.
| | - Vinod Nagle
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | | | - Ajit Sapre
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| | - Santanu Dasgupta
- Synthetic Biology Research and Development Group, Reliance Industries Limited, Reliance Corporate Park, Ghansoli, Thane- Belapur Road, Navi Mumbai, 400701, India
| |
Collapse
|
7
|
Kuzmin V, Ushenin KS, Dzhumaniiazova IV, Abramochkin D, Vornanen M. High temperature and hyperkalemia cause exit block of action potentials at the atrioventricular junction of rainbow trout (Oncorhynchus mykiss) heart. J Therm Biol 2022; 110:103378. [PMID: 36462845 DOI: 10.1016/j.jtherbio.2022.103378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 10/13/2022] [Accepted: 10/21/2022] [Indexed: 11/07/2022]
Abstract
At critically high temperatures, atrioventricular (AV) block causes ventricular bradycardia and collapse of cardiac output in fish. Here, the possible role of the AV canal in high temperature-induced heart failure was examined. To this end, optical mapping was used to measure action potential (AP) conduction in isolated AV junction preparations of the rainbow trout (Oncorhynchus mykiss) heart during acute warming/cooling in the presence of 4 or 8 mM external K+ concentration. The preparation included the AV canal and some atrial and ventricular tissue at its edges, and it was paced either from atrial or ventricular side at a frequency of 0.67 Hz (40 beats min-1) to trigger forward (anterograde) and backward (retrograde) conduction, respectively. The propagation of AP was fast in atrial and ventricular tissues, but much slower in the AV canal, causing an AV delay. Acute warming from 15 °C to 27 °C or cooling from 15 °C to 5 °C did not impair AP conduction in the AV canal, as both anterograde and retrograde excitations propagated regularly through the AV canal. In contrast, anterograde conduction through the AV canal did not trigger ventricular excitation at the boundary zone between the AV canal and the ventricle when extracellular K+ concentration was raised from 4 mM to 8 mM at 27 °C. Also, the retrograde conduction was blocked at the border between the AV canal and the atrium in high K+ at 27 °C. These findings suggest that the AV canal is resistant against high temperatures (and high K+), but the ventricular muscle cannot be excited by APs coming from the AV canal when temperature and external K+ concentration are simultaneously elevated. Therefore, bradycardia at high temperatures in fish may occur due to inability of AP of the AV canal to trigger ventricular AP at the junctional zone between the AV canal and the proximal part of the ventricle.
Collapse
Affiliation(s)
- Vladislav Kuzmin
- Department of Human and Animal Physiology, Lomonosov Moscow State University, Leninskiye gory, building 12, Moscow, 119991, Russia.
| | - Konstantin S Ushenin
- Ural Federal University, Institute of Natural Sciences and Mathematics, Ekaterinburg, Kuybysheva Str., 48, Ekaterinburg, 620026, Russia
| | - Irina V Dzhumaniiazova
- Department of Human and Animal Physiology, Lomonosov Moscow State University, Leninskiye gory, building 12, Moscow, 119991, Russia
| | - Denis Abramochkin
- Department of Human and Animal Physiology, Lomonosov Moscow State University, Leninskiye gory, building 12, Moscow, 119991, Russia; Laboratory of Cardiac Electrophysiology, National Medical Research Center for Cardiology, Moscow, Russia; Department of Physiology, Pirogov Russian National Research Medical University, Ostrovitjanova 1, Moscow, 117997, Russia
| | - Matti Vornanen
- University of Eastern Finland, Department of Environmental and Biological Sciences, P.O.Box 111, 80101, Joensuu, Finland
| |
Collapse
|
8
|
Arora N, Lo E, Philippidis GP. A two-prong mutagenesis and adaptive evolution strategy to enhance the temperature tolerance and productivity of Nannochloropsis oculata. Bioresour Technol 2022; 364:128101. [PMID: 36241066 DOI: 10.1016/j.biortech.2022.128101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/03/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Incorporation of microalgae in biorefineries intended to help society reach carbon neutrality is hindered by algal growth inhibition at high temperatures, necessitating the use of costly and carbon-intensive cooling systems. In the present study, a two-prong strategy of random mutagenesis and adaptive laboratory evolution to generate robust thermotolerant strains of Nannochloropsis oculata, was used. The best mutants demonstrated increased productivity at 35 °C, which was 10 °C higher than the optimal temperature of the wild type. In a 2-L photobioreactor at 35 °C, biomass and lipid productivity were 1.43-fold and 2.24-fold higher, respectively, than wild type at 25 °C. Higher pigment and carbohydrate content contributed to the mutants' rapid growth and enhanced photosynthetic efficiency. Metabolomics and lipidomics showed rewiring of the central carbon metabolism and membrane lipid synthesis in thermotolerant strains to ensure cellular homeostasis without compromising productivity. Tagatose and phosphatidylethanolamine upregulation were identified as future genetic targets for further enhancing lipid production.
Collapse
Affiliation(s)
- Neha Arora
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, USA
| | - Enlin Lo
- Department of Chemical, Biological and Materials Engineering, University of South Florida, Tampa, FL, USA
| | - George P Philippidis
- Patel College of Global Sustainability, University of South Florida, Tampa, FL, USA.
| |
Collapse
|
9
|
Gunasekaran K, Sadanandane C, Panneer D, Kumar A, Rahi M, Dinesh S, Vijayakumar B, Krishnaraja M, Subbarao SK, Jambulingam P. Sensitivity of wMel and wAlbB Wolbachia infections in Aedes aegypti Puducherry (Indian) strains to heat stress during larval development. Parasit Vectors 2022; 15:221. [PMID: 35729601 PMCID: PMC9215077 DOI: 10.1186/s13071-022-05345-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/29/2022] [Indexed: 11/13/2022] Open
Abstract
Background ICMR-Vector Control Research Centre, Puducherry, India, developed two colonies of Aedes aegypti infected with wMel and wAlbB Wolbacia strains called Ae. aegypti (Pud) lines for dengue control. The sensitivity of wMel and wAlbB strains in Ae. aegypti (Pud) lines to heat stress was studied. Methods wMel and wAlbB infected and uninfected Ae. aegypti larvae (first to fourth instars) were reared in the laboratory to adults at 26 °C, 30 °C, 36 °C and 40 °C constant temperatures and also 26–30 °C, 26–36 °C and 26–40 °C diurnal cyclic temperatures. The adults were tested for Wolbachia infection. Experiments were also carried out rearing the larvae under simulated field conditions in summer (April and June) under sunlight using fully open and half open bowls and also under sunlight and natural shade. Results At 36 °C and 40 °C constant temperatures, complete larval mortality was observed. At 30 °C and 26 °C, no larval mortality occurred, but Wolbachia density was relatively low in wMel infected males compared to control (maintained at 26 ± 1 °C). At diurnal cyclic temperature of 26–40 °C, Wolbachia density was reduced in males of both the (Pud) lines, but not in females. At 26–36 °C, reduction in Wolbachia density was observed in wMel males but not in wAlbB males. At 26–30 °C, no significant reduction in Wolbachia density was observed with wMel and wAlbB strains. In simulated field conditions (April), under sunlight, the daytime water temperature reached a maximum of 35.7 °C in both full and half open bowls. No larval mortality occurred. Wolbachia frequency and density was reduced in wMel-infected Ae. aegypti (Pud) males from both type of bowls and in females from full open bowls, and in wAlbB males from half open bowls. In June, rearing of larvae under sunlight, the first-instar larvae experienced a maximum daytime water temperature of > 38 °C that caused complete mortality. No larval mortality was observed in bowls kept under shade (< 32 °C). Conclusions Exposure of larvae to higher rearing temperatures in the laboratory and simulated-field conditions reduced the densities of wMel and wAlbB strains particularly in males, but the impact was more pronounced for wMel strain. The actual effect of heat stress on the stability of these two Wolbachia strains needs to be tested under natural field conditions. Graphical Abstract ![]()
Collapse
Affiliation(s)
- Kasinathan Gunasekaran
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Candasamy Sadanandane
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India.
| | - Devaraju Panneer
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Ashwani Kumar
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Manju Rahi
- Indian Council of Medical Research, Ramalingaswami Bhawan, Ansari Nagar, New Delhi, 110029, India
| | - Sundaram Dinesh
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Balakrishnan Vijayakumar
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Muthuraman Krishnaraja
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| | - Sarala K Subbarao
- Indian Council of Medical Research, Ramalingaswami Bhawan, Ansari Nagar, New Delhi, 110029, India
| | - Purushothaman Jambulingam
- Medical Complex, Indian Council of Medical Research-Vector Control Research Centre (ICMR-VCRC), Indira Nagar, Puducherry, 605006, India
| |
Collapse
|
10
|
Dayalan V, Kasivelu G, Raguraman V, Sharma AN. Studies on temperature impact (sudden and gradual) of the white-leg shrimp Litopenaeus vannamei. Environ Sci Pollut Res Int 2022:10.1007/s11356-022-20963-y. [PMID: 35619008 DOI: 10.1007/s11356-022-20963-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
In the present study, the effect of temperature shock (sudden and gradual) by increasing water temperature from 28 °C to 40 °C on survival, behavioral responses and immunological changes in Litopenaeus vannamei (L. vannamei) was studied. In sudden temperature shock, experimental groups were maintained at different temperature ranges such as 28 °C- 31 °C; 28 °C-34 °C; 28 °C-37 °C and 28 °C-40 °C along with 28 °C as control. For gradual temperature shock experiments, the initial water temperature was maintained at 28 °C for 24 h in control and then increased to 1 °C for every 24 h until reaching 40 °C. On reaching the final temperature of 40 °C, it was kept stable for 120 h. Results indicated that the increasing water temperature (sudden shock) affected survival, behavioral responses and immunological parameter. No shrimp survived at 40 °C treatment (sudden), whereas in the gradual temperature shock experiment 20% of animals survived at 40 °C. The increasing water temperature had no effects on behavioral responses up to 37 °C (gradual), but at 40 °C the observation of muscle cramps, low swimming rate, no feeding, muscle and hepatopancreas color turned whitish. Overall, the results suggest that L. vannamei can tolerate water temperature up to 34 °C under sudden shock and 37 °C under gradual shock conditions. This study reveals that shrimp L. vannamei can self-regulate to a certain extent of temperature variation in the environment.
Collapse
Affiliation(s)
- Vinu Dayalan
- Centre for Ocean Research (DST-FIST Sponsored Centre), MoES-Earth Science and Technology Cell (ESTC), Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - Govindaraju Kasivelu
- Centre for Ocean Research (DST-FIST Sponsored Centre), MoES-Earth Science and Technology Cell (ESTC), Sathyabama Institute of Science and Technology, Chennai, 600 119, India.
| | - Vasantharaja Raguraman
- Centre for Ocean Research (DST-FIST Sponsored Centre), MoES-Earth Science and Technology Cell (ESTC), Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| | - Amreen Nisa Sharma
- Centre for Ocean Research (DST-FIST Sponsored Centre), MoES-Earth Science and Technology Cell (ESTC), Sathyabama Institute of Science and Technology, Chennai, 600 119, India
| |
Collapse
|
11
|
Luis Val A, Wood CM. Global change and physiological challenges for fish of the Amazon today and in the near future. J Exp Biol 2022; 225:275450. [PMID: 35582942 DOI: 10.1242/jeb.216440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Amazonia is home to 15% (>2700, in 18 orders) of all the freshwater fish species of the world, many endemic to the region, has 65 million years of evolutionary history and accounts for 20% of all freshwater discharge to the oceans. These characteristics make Amazonia a unique region in the world. We review the geological history of the environment, its current biogeochemistry and the evolutionary forces that led to the present endemic fish species that are distributed amongst three very different water types: black waters [acidic, ion-poor, rich in dissolved organic carbon (DOC)], white waters (circumneutral, particle-rich) and clear waters (circumneutral, ion-poor, DOC-poor). The annual flood pulse is the major ecological driver for fish, providing feeding, breeding and migration opportunities, and profoundly affecting O2, CO2 and DOC regimes. Owing to climate change and other anthropogenic pressures such as deforestation, pollution and governmental mismanagement, Amazonia is now in crisis. The environment is becoming hotter and drier, and more intense and frequent flood pulses are now occurring, with greater variation between high and low water levels. Current projections are that Amazon waters of the near future will be even hotter, more acidic, darker (i.e. more DOC, more suspended particles), higher in ions, higher in CO2 and lower in O2, with many synergistic effects. We review current physiological information on Amazon fish, focusing on temperature tolerance and ionoregulatory strategies for dealing with acidic and ion-poor environments. We also discuss the influences of DOC and particles on gill function, the effects of high dissolved CO2 and low dissolved O2, with emphasis on water- versus air-breathing mechanisms, and strategies for pH compensation. We conclude that future elevations in water temperature will be the most critical factor, eliminating many species. Climate change will likely favour predominantly water-breathing species with low routine metabolic rates, low temperature sensitivity of routine metabolic rates, high anaerobic capacity, high hypoxia tolerance and high thermal tolerance.
Collapse
Affiliation(s)
- Adalberto Luis Val
- Laboratory of Ecophysiology and Molecular Evolution, Brazilian National Institute for Research of the Amazon, Manaus, Brazil, 69080-971
| | - Chris M Wood
- Department of Zoology, University of British Columbia, Vancouver, BC, CanadaV6T 1Z4.,Department of Biology, McMaster University, Hamilton, ON, CanadaL8S 4K1
| |
Collapse
|
12
|
García-Ríos E, Alonso-Del-Real J, Lip KYF, Pinheiro T, Teixeira J, van Gulik W, Domingues L, Querol A, Guillamón JM. Genome-wide effect of non-optimal temperatures under anaerobic conditions on gene expression in Saccharomyces cerevisiae. Genomics 2022; 114:110386. [PMID: 35569731 DOI: 10.1016/j.ygeno.2022.110386] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 04/28/2022] [Accepted: 05/07/2022] [Indexed: 12/29/2022]
Abstract
Understanding of thermal adaptation mechanisms in yeast is crucial to develop better-adapted strains to industrial processes, providing more economical and sustainable products. We have analyzed the transcriptomic responses of three Saccharomyces cerevisiae strains, a commercial wine strain, ADY5, a laboratory strain, CEN.PK113-7D and a commercial bioethanol strain, Ethanol Red, grown at non-optimal temperatures under anaerobic chemostat conditions. Transcriptomic analysis of the three strains revealed a huge complexity of cellular mechanisms and responses. Overall, cold exerted a stronger transcriptional response in the three strains comparing with heat conditions, with a higher number of down-regulating genes than of up-regulating genes regardless the strain analyzed. The comparison of the transcriptome at both sub- and supra-optimal temperatures showed the presence of common genes up- or down-regulated in both conditions, but also the presence of common genes up- or down-regulated in the three studied strains. More specifically, we have identified and validated three up-regulated genes at sub-optimal temperature in the three strains, OPI3, EFM6 and YOL014W. Finally, the comparison of the transcriptomic data with a previous proteomic study with the same strains revealed a good correlation between gene activity and protein abundance, mainly at low temperature. Our work provides a global insight into the specific mechanisms involved in temperature adaptation regarding both transcriptome and proteome, which can be a step forward in the comprehension and improvement of yeast thermotolerance.
Collapse
|
13
|
Gu X, Chen W, Perry T, Batterham P, Hoffmann AA. Genomic knockout of hsp23 both decreases and increases fitness under opposing thermal extremes in Drosophila melanogaster. Insect Biochem Mol Biol 2021; 139:103652. [PMID: 34562590 DOI: 10.1016/j.ibmb.2021.103652] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/10/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Under exposure to harmful environmental stresses, organisms exhibit a general stress response involving upregulation of the expression of heat shock proteins (HSPs) which is thought to be adaptive. Small heat shock proteins (sHSPs) are key components of this response, although shsp genes may have other essential roles in development. However, the upregulation of expression of a suite of genes under stress may not necessarily be evidence of an adaptive response to stress that involves those genes. To explore this issue, we used the CRISPR/Cas9 system to investigate pleiotropic effects of the hsp23 gene in Drosophila melanogaster. Transgenic flies carrying a pCFD5 plasmid containing sgRNAs were created to generate a complete knockout of the hsp23 gene. The transgenic line lacking hsp23 showed an increased hatch rate and no major fitness costs under an intermediate temperature used for culturing the flies. In addition, hsp23 knockout affected tolerance to hot and cold temperature extremes but in opposing directions; knockout flies had reduced tolerance to cold, but increased tolerance to heat. Despite this, hsp23 expression (in wild type flies) was increased under both hot and cold conditions. The hsp23 gene was required for heat hardening at the pupal stage, but not at the 1st-instar larval stage, even though the gene was upregulated in wild type controls at that life stage. The phenotypic effects of hsp23 were not compensated for by expression changes in other shsps. Our study shows that the fitness consequences of an hsp gene knockout depends on environmental conditions, with potential fitness benefits of gene loss even under conditions when the gene is normally upregulated.
Collapse
Affiliation(s)
- Xinyue Gu
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria, Australia.
| | - Wei Chen
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Trent Perry
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Philip Batterham
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Ary A Hoffmann
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Victoria, Australia
| |
Collapse
|
14
|
Stavrakidis-Zachou O, Lika K, Michail P, Tsalafouta A, Mohamed AH, Nikos P. Thermal tolerance, metabolic scope and performance of meagre, Argyrosomus regius, reared under high water temperatures. J Therm Biol 2021; 100:103063. [PMID: 34503801 DOI: 10.1016/j.jtherbio.2021.103063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 07/06/2021] [Accepted: 08/01/2021] [Indexed: 01/20/2023]
Abstract
This article reports on the thermal tolerance, metabolic capacity and performance of juvenile meagre (Argyrosomus regius) reared under three high water temperatures (24, 29 and 34 °C) for three months. The analysis includes the thermal effects on the growth performance, metabolism and physiology of meagre, including a range of molecular, haematological, metabolic, enzymatic and hormonal indicators, as well as the effects on the proximate composition and ingestion speed. Meagre performs best between 24 and 29 °C while the temperature of 34 °C is very close to the upper end of its temperature tolerance range. At 34 °C meagre exhibits a poor growth performance and physiological status, increased blood clotting, high mortality rates and a diminished capacity for aerobic metabolism, as indicated by its low aerobic scope (129 mg kg-1 h-1). Meagre may tolerate short exposures to high temperatures after sufficient acclimation (Critical thermal maximum of 37.5 °C after acclimation to 29 °C) but its overall performance declines under prolonged exposure, suggesting that this emerging aquaculture species may be vulnerable to global warming. Our work corroborates previous findings on the thermal preferences of the species, identifies critical biological thresholds, and provides insights into the effects of prolonged exposure to high temperature regimes.
Collapse
Affiliation(s)
- Orestis Stavrakidis-Zachou
- Department of Biology, University of Crete, Heraklion, 71003, Crete, Greece; Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, 71500, Crete, Greece.
| | - Konstadia Lika
- Department of Biology, University of Crete, Heraklion, 71003, Crete, Greece
| | - Pavlidis Michail
- Department of Biology, University of Crete, Heraklion, 71003, Crete, Greece
| | - Aleka Tsalafouta
- Department of Biology, University of Crete, Heraklion, 71003, Crete, Greece
| | - Asaad H Mohamed
- Beacon Development, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Papandroulakis Nikos
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, 71500, Crete, Greece
| |
Collapse
|
15
|
Peruzza L, Thatje S, Hauton C. Acclimation to cyclic hypoxia improves thermal tolerance and copper survival in the caridean shrimp Palaemon varians. Comp Biochem Physiol A Mol Integr Physiol 2021; 259:111010. [PMID: 34102295 DOI: 10.1016/j.cbpa.2021.111010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/06/2021] [Accepted: 06/02/2021] [Indexed: 01/03/2023]
Abstract
In response to the continuous variation of environmental parameters, species must be able to adjust their physiology to overcome stressful conditions, a process known as acclimatization. Numerous laboratory studies have been conducted to understand and describe the mechanisms of acclimation to one environmental stressor (e.g. cyclic hypoxia), but currently our understanding of how acclimation to one stressor can change tolerance to a subsequent stressor is limited. Here, in two different experiments, we used the shrimp Palaemon varians to test how, following 28-days acclimation to cyclic hypoxia (mimicking a cyclic hypoxic regime currently found in its natural habitat), critical thermal maximum (CTmax) and sensitivity to copper (Cu2+) exposure (30 mgL-1) changed in comparison to shrimp acclimated to normoxic conditions and then exposed to thermal stress or Cu2+. Acclimation to cyclic hypoxia improved both CTmax (~1 °C higher than controls) and survival to acute Cu2+ exposure (~30% higher than controls) and induced significant gene expression changes (i.e. up-regulation of heat shock protein 70 - HSP70, hypoxia inducible factor - HIF, phosphoenolpyruvate carboxykinase - PEPCK, glucose 6-P transporter - G6Pt, metallothionein - Mt, and down-regulation of hemocyanin - Hem) in animals acclimated to cyclic hypoxia. Our results demonstrate how acclimation to cyclic hypoxia improved tolerance to subsequent stressors, highlighting the complexity of predicting organismal performance in variable (i.e. where multiple parameters can simultaneously change during the day) environments.
Collapse
Affiliation(s)
- Luca Peruzza
- School of Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, Southampton SO14 3ZH, UK.
| | - Sven Thatje
- School of Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, Southampton SO14 3ZH, UK
| | - Chris Hauton
- School of Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, Southampton SO14 3ZH, UK
| |
Collapse
|
16
|
Kuyucu AC, Chown SL. Time course of acclimation of critical thermal limits in two springtail species (Collembola). J Insect Physiol 2021; 130:104209. [PMID: 33609519 DOI: 10.1016/j.jinsphys.2021.104209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 01/12/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Critical thermal limits are one of the most important sources of information on the possible impacts of climate change on soil microarthropods. The extent of plasticity of tolerance limits can provide valuable insights about the likely responses of ectotherms to environmental change. Although many studies have investigated various aspects of the acclimatory response of thermal limits to temperature changes in arthropods, the number of studies focusing on the temporal dynamics of this plastic response is relatively small. Collembola, one of the key microarthropods groups in almost all soil ecosystems around the world, have been the focus of several thermal acclimation studies. Yet the time course of acclimation and its reversal have not been widely studied in this group. Here we investigated the time course of acclimation of critical thermal maxima (CTmax) and minima (CTmin) of two springtail species. We exposed a Cryptopygus species from temperate southern Australia to high and low temperature conditions and Mucrosomia caeca from Sub-Antarctic Macquarie Island to high temperature conditions. Upper thermal limits in both species were found to be highly constrained, as CTmax did not show substantial response to high and low temperature acclimation both in the Cryptopygus species and M. caeca, whereas CTmin showed significant responses to high and low temperature conditions. The acclimation begins to stabilize in approximately seven days in all treatments except for the acclimation of CTmin under high temperature conditions, where the pattern of change suggests that this acclimation might take longer to be completed. Although reversal of this acclimation also begins to stabilize under 7 days, re-acclimation was relatively slow as we did not observe a very clear settling point in 2 of the 3 re-acclimation treatments. The observed limits on the plasticity of CTmax indicate that both of these species may be very limited in their ability to respond plastically to short-term rapid changes in temperature (i.e temperature extremes).
Collapse
Affiliation(s)
- Arda C Kuyucu
- Hacettepe University, Department of Biology, Ankara 06800, Turkey.
| | - Steven L Chown
- School of Biological Sciences, Monash University, Victoria 3800, Australia
| |
Collapse
|
17
|
Abstract
Warming of aquatic environments as a result of climate change is already having measurable impacts on fishes, manifested as changes in phenology, range shifts and reductions in body size. Understanding the physiological mechanisms underlying these seemingly universal patterns is crucial if we are to reliably predict the fate of fish populations with future warming. This includes an understanding of mechanisms for acute thermal tolerance, as extreme heatwaves may be a major driver of observed effects. The hypothesis of gill oxygen limitation (GOL) is claimed to explain asymptotic fish growth, and why some fish species are decreasing in size with warming; but its underlying assumptions conflict with established knowledge and direct mechanistic evidence is lacking. The hypothesis of oxygen- and capacity-limited thermal tolerance (OCLTT) has stimulated a wave of research into the role of oxygen supply capacity and thermal performance curves for aerobic scope, but results vary greatly between species, indicating that it is unlikely to be a universal mechanism. As thermal performance curves remain important for incorporating physiological tolerance into models, we discuss potentially fruitful alternatives to aerobic scope, notably specific dynamic action and growth rate. We consider the limitations of estimating acute thermal tolerance by a single rapid measure whose mechanism of action is not known. We emphasise the continued importance of experimental physiology, particularly in advancing our understanding of underlying mechanisms, but also the challenge of making this knowledge relevant to the more complex reality.
Collapse
Affiliation(s)
- Sjannie Lefevre
- Section for Physiology and Cell Biology, Department of Biosciences, University of Oslo, 0316 Oslo, Norway
| | - Tobias Wang
- Department of Biology - Zoophysiology, Aarhus University, 8000 Aarhus C, Denmark
| | - David J McKenzie
- Marine Biodiversity, Exploitation and Conservation (MARBEC), Université de Montpellier, CNRS, Ifremer, IRD, 34000 Montpellier, France
| |
Collapse
|
18
|
Zhao T, Gao Y, Yu T, Zhang Y, Zhang Z, Zhang L, Zhang L. Biodegradation of phenol by a highly tolerant strain Rhodococcus ruber C1: Biochemical characterization and comparative genome analysis. Ecotoxicol Environ Saf 2021; 208:111709. [PMID: 33396040 DOI: 10.1016/j.ecoenv.2020.111709] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/12/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
A novel phenol-degrading strain was isolated and identified as Rhodococcus ruber C1. The degradation analysis shows that 1806 mg/L of phenol can be completely degraded by strain C1 within 38 h, and the maximum specific growth rate (μmax=1.527 h-1) and maximum specific phenol degradation rate (qmax=3.674 h-1) indicate its excellent phenol metabolism capability. More importantly, phenol can be degraded by strain C1 in the temperature range of 20-45 °C within 72 h, and with longer degradation time, phenol can be completely degraded even at 10, 15 and 50 °C. The whole genome of strain C1 was sequenced, and a comparative genome analysis of strain C1 with 36 other genomes of Rhodococcus was performed. A remarkable gene family expansion occurred during the evolution of Rhodococcus, and a comprehensive evolutionary picture of Rhodococcus at genomic level was presented. Moreover, the copy number of genes involved in phenol metabolism was compared among genus Rhodococcus, and the results demonstrate high phenol degradation capability of strain C1 at genomic level. These findings suggest that Rhodococcus ruber C1 is a bacterium capable of degrading phenol efficiently in the temperature range of 10-50 °C.
Collapse
Affiliation(s)
- Tiantao Zhao
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China; School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Yanhui Gao
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China; School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Tiantian Yu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yunru Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Zhengyi Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Lei Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Lijie Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| |
Collapse
|
19
|
Tippelt L, Werner D, Kampen H. Low temperature tolerance of three Aedes albopictus strains (Diptera: Culicidae) under constant and fluctuating temperature scenarios. Parasit Vectors 2020; 13:587. [PMID: 33225979 PMCID: PMC7682092 DOI: 10.1186/s13071-020-04386-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 10/06/2020] [Indexed: 01/12/2023] Open
Abstract
Background Aedes albopictus, a vector of numerous viruses and filarial worms, has already established in 20 countries in Europe, mainly colonising subtropical regions. Continuing adaptation to climatic conditions in temperate areas would probably result in a spread to more northern European countries, producing an increasing risk of mosquito-borne pathogen transmission over a much greater area. Based on previous studies showing that Ae. albopictus is able to overwinter in Germany, this study aims to determine more exactly its ecological limits of enduring low temperatures. Methods Non-diapausing and experimentally induced diapausing eggs of three different Ae. albopictus strains (tropical, subtropical and temperate origins) were exposed to four different regimes with constant temperatures and three different regimes with fluctuating temperatures in a course of a day for a minimum of 2 and a maximum of 30 days. The hatching rate of larvae after cold exposure of the eggs was taken as a measure of cold tolerance. Results The experiments showed that the tropical Ae. albopictus strain had a lower cold tolerance than the subtropical and the temperate strains. The eggs of all used strains were able to survive constant temperatures as low as −5 °C for an exposure period of 30 days, while constant temperatures as low as −10 °C were endured for 2 days by the tropical strain and for 10 and 20 days by the subtropical and temperate strains, respectively. At fluctuating temperatures, both the subtropical and the temperate strains exhibited hatching under all temperature regimes, even with a minimum temperature of −10 °C, whereas the tropical strain ceased hatching after an exposure period of 30 days under the temperature regime with a minimum temperature of −10 °C. The analyses showed that the temperature played the major role in interpreting the hatching rates of the eggs. The condition, whether the eggs were diapausing or not, had no significant influence, although results indicated a slightly higher cold tolerance of diapausing eggs at −10 °C. Conclusions It must be expected that subtropical and temperate strains of Ae. albopictus are able to withstand common central European winters and are able to establish in considerable parts of the continent.![]()
Collapse
Affiliation(s)
- Lisa Tippelt
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald, Insel Riems, Germany.
| | - Doreen Werner
- Leibniz Centre for Agricultural Landscape Research, Muencheberg, Germany
| | - Helge Kampen
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald, Insel Riems, Germany
| |
Collapse
|
20
|
Vornanen M. Effects of acute warming on cardiac and myotomal sarco(endo)plasmic reticulum ATPase (SERCA) of thermally acclimated brown trout (Salmo trutta). J Comp Physiol B 2020; 191:43-53. [PMID: 32980918 PMCID: PMC7819936 DOI: 10.1007/s00360-020-01313-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 08/21/2020] [Accepted: 09/09/2020] [Indexed: 11/24/2022]
Abstract
At high temperatures, ventricular beating rate collapses and depresses cardiac output in fish. The role of sarco(endo)plasmic reticulum Ca2+-ATPase (SERCA) in thermal tolerance of ventricular function was examined in brown trout (Salmo trutta) by measuring heart SERCA and comparing it to that of the dorsolateral myotomal muscle. Activity of SERCA was measured from crude homogenates of cold-acclimated (+ 3 °C, c.a.) and warm-acclimated (+ 13 °C, w.a.) brown trout as cyclopiazonic acid (20 µM) sensitive Ca2+-ATPase between + 3 and + 33 °C. Activity of the heart SERCA was significantly higher in c.a. than w.a. trout and increased strongly between + 3 and + 23 °C with linear Arrhenius plots but started to plateau between + 23 and + 33 °C in both acclimation groups. The rate of thermal inactivation of the heart SERCA at + 35 °C was similar in c.a. and w.a. fish. Activity of the muscle SERCA was less temperature dependent and more heat resistant than that of the heart SERCA and showed linear Arrhenius plots between + 3 and + 33 °C in both c.a. and w.a. fish. SERCA activity of the c.a. muscle was slightly higher than that of w.a. muscle. The rate of thermal inactivation at + 40 °C was similar for both c.a. and w.a. muscle SERCA at + 40 °C. Although the heart SERCA is more sensitive to high temperatures than the muscle SERCA, it is unlikely to be a limiting factor for heart rate, because its heat tolerance, unlike that of the ventricular beating rate, was not changed by temperature acclimation.
Collapse
Affiliation(s)
- Matti Vornanen
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland.
| |
Collapse
|
21
|
Lip KYF, García-Ríos E, Costa CE, Guillamón JM, Domingues L, Teixeira J, van Gulik WM. Selection and subsequent physiological characterization of industrial Saccharomyces cerevisiae strains during continuous growth at sub- and- supra optimal temperatures. Biotechnol Rep (Amst) 2020; 26:e00462. [PMID: 32477898 PMCID: PMC7251540 DOI: 10.1016/j.btre.2020.e00462] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 11/04/2022]
Abstract
A phenotypic screening of 12 industrial yeast strains and the well-studied laboratory strain CEN.PK113-7D at cultivation temperatures between 12 °C and 40 °C revealed significant differences in maximum growth rates and temperature tolerance. From those 12, two strains, one performing best at 12 °C and the other at 40 °C, plus the laboratory strain, were selected for further physiological characterization in well-controlled bioreactors. The strains were grown in anaerobic chemostats, at a fixed specific growth rate of 0.03 h-1 and sequential batch cultures at 12 °C, 30 °C, and 39 °C. We observed significant differences in biomass and ethanol yields on glucose, biomass protein and storage carbohydrate contents, and biomass yields on ATP between strains and cultivation temperatures. Increased temperature tolerance coincided with higher energetic efficiency of cell growth, indicating that temperature intolerance is a result of energy wasting processes, such as increased turnover of cellular components (e.g. proteins) due to temperature induced damage.
Collapse
Affiliation(s)
- Ka Ying Florence Lip
- Department of Biotechnology, Delft University of Technology, Delft 2629HZ, the Netherlands
| | - Estéfani García-Ríos
- Food Biotechnology Department, Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Carlos E. Costa
- Centre of Biological Engineering, University of Minho, Braga 4710-057, Portugal
| | - José Manuel Guillamón
- Food Biotechnology Department, Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - Lucília Domingues
- Centre of Biological Engineering, University of Minho, Braga 4710-057, Portugal
| | - José Teixeira
- Centre of Biological Engineering, University of Minho, Braga 4710-057, Portugal
| | - Walter M. van Gulik
- Department of Biotechnology, Delft University of Technology, Delft 2629HZ, the Netherlands
| |
Collapse
|
22
|
Sarikhani MR, Khoshru B, Greiner R. Isolation and identification of temperature tolerant phosphate solubilizing bacteria as a potential microbial fertilizer. World J Microbiol Biotechnol 2019; 35:126. [PMID: 31363938 DOI: 10.1007/s11274-019-2702-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/24/2019] [Indexed: 10/26/2022]
Abstract
Isolation and identification of temperature tolerant phosphate solubilizing bacteria (TTPSB) and their use as microbial fertilizers was the main goal of the study. In this study, TTPSB were isolated from soil samples treated for 16 h at 55 °C. Their phosphate solubilizing activity was either evaluated in solid media by forming a clear zone (halo) or in liquid media by quantification of the soluble phosphate in the growth medium. Five colonies (RPS4, RPS6, RPS7, RPS8 and RPS9) were identified to be able to form a halo and two of the isolates (RPS9 and RPS7) tolerated a temperature of 55 °C. With tricalcium phosphate (TCP) as the sole P-source, the phosphate solubilizing capacity of RPS9 and RPS7 was determined to be 563.8 and 324.1 mg P L-1 in liquid Sperber medium, respectively. Both bacterial isolates were identified as Pantoea agglomerans by molecular and biochemical characterization. To be used as a microbial fertilizer a carrier system for the temperature tolerant bacteria consisting of rock phosphate, sulfur and bagasse was used. It could be established that the bacterial cell counts of the microbial fertilizers were acceptable for application after storage for 4 months at 28 °C. In a greenhouse experiment using pot cultures, inoculation of maize (S.C.704) with the microbial fertilizers in an autoclaved soil resulted in a significant effect on total fresh and dry weight of the plant root and shoot as well as on the P content of the root and shoot. The effects observed with RPS9 as a component of the microbial fertilizer on plant growth and P nutrition was comparable with the addition of 50% of recommended triple superphosphate (TSP) dose. Using temperature tolerant bacteria in microbial fertilizers will overcome limitations in production and storage of the microbial fertilizers and contribute to a environmentally-friendly agriculture. The temperature tolerant P. agglomerans strain RPS9 was shown to be effective as part of a microbial fertilizer in supporting the growth and P uptake in maize.
Collapse
Affiliation(s)
| | - Bahman Khoshru
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Ralf Greiner
- Department of Food Technology and Bioprocess Engineering, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| |
Collapse
|
23
|
Verbitsky VB, Lazareva VI, Medyantseva EN, Malysheva OA, Zhdanova SM, Verbitskaya TI, Grishanin AK. The preferred and avoidance temperatures of Thermocyclops crassus (Fischer, 1853) and their relation to the temperature of optimal, pessimal and normal performance of the species. J Therm Biol 2018; 78:106-113. [PMID: 30509626 DOI: 10.1016/j.jtherbio.2018.09.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 08/22/2018] [Accepted: 09/13/2018] [Indexed: 10/28/2022]
Abstract
The ranges of the preferred and avoided temperatures in representatives of Thermocyclops crassus (Fischer, 1853) were determined by the results of experimental testing in a thermogradient aparatus and comparison of the obtained values with field observations of the optimal, pessimal and tolerated temperature conditions of development of these populations in nature. Copepods were sampled from pond located near Borok, Yaroslavl region, Russia (58o02'57'' N; 38o14'56'' E). The ambient water temperature was 15.0°С. Temperature preference was determined by the "chronic" method. The phenology of development of Th. crassus was observed in the field of water bodies in Central and Volga Federal Districts of Russia. The final thermal preferendum (FTP) achievement occurred with an increase in the preferred temperature: when animals were placed at a temperature in the thermal gradient (14.0-15.0°C) that approximated the temperature of the source pond, they moved to warmer water until they chose FTP (26.7°C). Obtained the values of FTP (25-30°C), temperature of normal performance (21-32°C) and pessimal temperatures of 9-20 and 33°С well coincide with numerous field observations for temperature conditions of development of species in northern waterbodies of Holarctic and with the temperatures at which populations of Th. crassus thrive in southern waterbodies of Holarctic and in tropical lakes. It is concluded that, despite the historically long existence of the species in the reservoirs of the temperate climatic zone, the northern populations of Th. crassus retained the temperature responses characteristic of their southern sister populations. And although the species has adapted to life in northern reservoirs at lower temperatures, when it becomes possible to choose, cyclops prefer temperatures above 25°C, which are optimal for southern populations living in tropical waters. These data once again confirm that the horizontal thermal gradient method can be used to infer temperature tolerance of freshwater cyclopoid copepods in nature.
Collapse
Affiliation(s)
- Vladimir B Verbitsky
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia.
| | - Valentina I Lazareva
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| | - Elena N Medyantseva
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| | - Olga A Malysheva
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| | - Svetlana M Zhdanova
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| | - Tamara I Verbitskaya
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| | - Andrey K Grishanin
- Papanin Institute for Biology of Inland Waters, Russian Academy of Science, 152742 Borok, Nekouz, Yaroslavl, Russia
| |
Collapse
|
24
|
Dang W, Hu YC, Geng J, Wang J, Lu HL. Thermal physiological performance of two freshwater turtles acclimated to different temperatures. J Comp Physiol B 2018; 189:121-130. [PMID: 30478602 DOI: 10.1007/s00360-018-1194-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 11/08/2018] [Accepted: 11/22/2018] [Indexed: 12/30/2022]
Abstract
The thermal physiological performance of invasive species may play a crucial role in determining their invasion success. In this study, we acclimated two cohorts of hatchlings of freshwater turtles (native Mauremys reevesii and invasive Trachemys scripta elegans) from low and high-latitude collection sites, respectively, to different thermal conditions (20 and 30 °C) for 4 weeks, and then compared their thermal tolerance and locomotor performance. T. scripta elegans hatchlings could swim faster (but righted themselves more slowly), and tolerate a higher temperature and wider temperature range than M. reevesii hatchlings. Similarly, T. scripta elegans hatchlings had a greater maximal performance (Pmax) value for swimming speed (but a lower Pmax value for righting time) than M. reevesii hatchlings. Temperature acclimation had a significant impact on the thermal tolerance and locomotor ability of turtles, but the acclimation effect did not differ between the two species. T. scripta elegans hatchlings seemed to have a greater thermal plasticity than M. reevesii hatchlings. High-latitude individuals showed a greater low-temperature tolerance, but lower locomotor ability (longer righting time) than low-latitude ones. However, the thermal plasticity did not differ between latitudinal cohorts. Our results indicated that T. scripta elegans performed better than M. reevesii, which might contribute to its range expansion and invasive success.
Collapse
Affiliation(s)
- Wei Dang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Ying-Chao Hu
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Jun Geng
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Jie Wang
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China
| | - Hong-Liang Lu
- Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, Zhejiang, People's Republic of China.
| |
Collapse
|
25
|
Abstract
Sea urchins have played important roles in cell and developmental biology. They have the potential to be even more useful as models if the ability to create transgenic animals and maintain genetic lines are developed. Here, I describe the methods to produce next-generation lines using a newly introduced sea urchin model, Temnopleurus reevesii, in the laboratory. The embryos of T. reevesii have wide range of temperature tolerance between 15°C to 30°C and have high transparency, which can be a strong point in live-imaging and fluorescent immunohistochemistry. I describe how to grow and culture the embryos/larvae/juveniles/adults of T. reevesii to address the challenge of establishing inbred strains followed by introducing genetics into this species in the future.
Collapse
Affiliation(s)
- Shunsuke Yaguchi
- Shimoda Marine Research Center, University of Tsukuba, Shizuoka, Japan.
| |
Collapse
|
26
|
Manenti T, Cunha TR, Sørensen JG, Loeschcke V. How much starvation, desiccation and oxygen depletion can Drosophila melanogaster tolerate before its upper thermal limits are affected? J Insect Physiol 2018; 111:1-7. [PMID: 30273554 DOI: 10.1016/j.jinsphys.2018.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/27/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
Heat tolerance is commonly assessed as the critical thermal maximum (CTmax) using the dynamic method exposing organisms to a gradually increasing (ramping) temperature until organisms fall into a coma. The CTmax estimate is dependent on the ramping rate, with decreased rates leading to longer treatments and ultimately lower CTmax estimates. There is a current discussion surrounding the physiological dynamics of the effect of the time of exposure by temperature interaction on these estimates. Besides temperature the time of exposure to limited food (starvation), desiccation, and reduced levels of oxygen or increased levels of CO2 may, in interaction with ramping rate, act as confounding factors when assessing upper thermal limits using the dynamic method. Here we test the role of the different potentially confounding factors for assaying thermal tolerance using a ramping assay under four different ramping rates, varying from 0.01 °C/min to 0.2 °C/min. We find that CTmax values are higher at faster ramping rates and that oxygen or CO2 concentration does not show any negative effect on the CTmax values obtained within the experimental pre-treatment period (32 h). Both water (up to 6 h) and food (up to 42 h) deprivation prior to assay showed a negative correlation with thermal tolerance of the flies. For both traits, we found a significant interaction with ramping rate, most likely due to prolonged assays at lower rates. However, as little water was lost during the ramping assay and as food deprivation only modestly affected CTmax values, results were very robust to the conditions experienced during the assay (even at slow rates) and mainly affected by the conditions experienced prior to performing the assay. Thus, for the most commonly applied experimental conditions CTmax estimates are unlikely to be biased or confounded by ramping rate, starvation, desiccation or deteriorating atmospheric composition.
Collapse
Affiliation(s)
- Tommaso Manenti
- Department of Bioscience, Section for Genetics, Ecology and Evolution, Aarhus University, Ny Munkegade 114-116, Buildg. 1540, DK-8000 Aarhus C, Denmark
| | - Tomás Rocha Cunha
- Department of Bioscience, Section for Genetics, Ecology and Evolution, Aarhus University, Ny Munkegade 114-116, Buildg. 1540, DK-8000 Aarhus C, Denmark
| | - Jesper Givskov Sørensen
- Department of Bioscience, Section for Genetics, Ecology and Evolution, Aarhus University, Ny Munkegade 114-116, Buildg. 1540, DK-8000 Aarhus C, Denmark.
| | - Volker Loeschcke
- Department of Bioscience, Section for Genetics, Ecology and Evolution, Aarhus University, Ny Munkegade 114-116, Buildg. 1540, DK-8000 Aarhus C, Denmark
| |
Collapse
|
27
|
Güralp H, Pocherniaieva K, Blecha M, Policar T, Pšenička M, Saito T. Development, and effect of water temperature on development rate, of pikeperch Sander lucioperca embryos. Theriogenology 2017; 104:94-104. [PMID: 28822905 DOI: 10.1016/j.theriogenology.2017.07.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 11/18/2022]
Abstract
Knowledge of embryo development is essential to the application of reproductive biotechnology in aquaculture, including for pikeperch Sander lucioperca. We describe pikeperch embryo development and demonstrated effects of temperature on the duration of embryogenesis. Developmental stages in embryos incubated at 15 °C were identified as zygote, 0-1.5 h post-fertilization (hpf); cleavage, 2.5-7.5 hpf; blastula, 9-18.75 hpf; gastrula, 21-39, hpf; segmentation, 45-105 hpf; and hatching, 125-197 hpf. Additional groups of eggs were fertilized and incubated at 10, 15, 20, and 25 °C to document stages of development, development rate, and survival. The optimal fertilization and incubation temperature was shown to be 15 °C, with the highest fertilization, survival, and hatching rates. Embryo development was slower at 10 °C, with 45% of fertilized embryos surviving to hatching. Development was accelerated at 20 °C, and resulted in a 56% survival rate of fertilized embryos. At 25 °C, embryos did not develop to the blastula stage. Pikeperch could be a valuable percid model for research in which flexible incubation temperatures is required.
Collapse
Affiliation(s)
- H Güralp
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
| | - K Pocherniaieva
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - M Blecha
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - T Policar
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - M Pšenička
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - T Saito
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| |
Collapse
|
28
|
Eckford-Soper LK, Daugbjerg N. Interspecific Competition Study Between Pseudochattonella farcimen and P. verruculosa (Dictyochophyceae)-Two Ichthyotoxic Species that Co-occur in Scandinavian Waters. Microb Ecol 2017; 73:259-270. [PMID: 27645137 DOI: 10.1007/s00248-016-0856-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 09/05/2016] [Indexed: 06/06/2023]
Abstract
The genus Pseudochattonella has become a frequent component of late winter-early spring phytoplankton community in Scandinavian waters, causing extensive fish kills and substantial economic losses. One of currently two recognised species, P. farcimen, is often abundant prior to the diatom spring bloom. Recent field studies have revealed that P. farcimen and P. verruculosa have a period of overlap in their temperature ranges and thus their seasonal occurrences. Using laboratory cultures, we investigated the seasonal succession and growth of P. farcimen and P. verruculosa in both mono- and mixed-culture using the recently developed Pseudochattonella 'qPCR subtraction method', which for the first time allowed the simultaneous enumeration of these morphologically indistinguishable species in mixed assemblages. We examined how these species interacted over four different temperatures (5, 8, 11 and 15 °C). The observed growth rates and cell yields varied with temperature revealing their preferred temperature optima. P. farcimen was able to achieve positive net growth over all temperatures, while P. verruculosa failed to grow below 11 °C. Growth responses were statistically different between mono- and mixed-cultures with the outcome of these interactions being temperature-dependent. Nutrients (nitrate and phosphate) and pH levels were also measured throughout the growth experiments to better understand how these factors influenced growth of both species. P. verruculosa was shown to be less sensitive to high pH as growth ceased at pH 9.1, whereas P. farcimen stopped growing at pH 8.4. Understanding the influence of abiotic factors (e.g. temperature, pH and competition) on growth rates allows for a better understanding and prediction of phytoplankton community dynamics.
Collapse
Affiliation(s)
- Lisa K Eckford-Soper
- Marine Biological Section, Department of Biology, University of Copenhagen, Universitetsparken 4, DK-2100, Copenhagen Ø, Denmark.
| | - Niels Daugbjerg
- Marine Biological Section, Department of Biology, University of Copenhagen, Universitetsparken 4, DK-2100, Copenhagen Ø, Denmark
| |
Collapse
|
29
|
Arnholdt-Schmitt B. Respiration Traits as Novel Markers for Plant Robustness Under the Threat of Climate Change: A Protocol for Validation. Methods Mol Biol 2017; 1670:183-91. [PMID: 28871543 DOI: 10.1007/978-1-4939-7292-0_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Respiration traits allow calculating temperature-dependent carbon use efficiency and prediction of growth rates. This protocol aims (1) to enable validation of respiration traits as non-DNA biomarkers for breeding on robust plants in support of sustainable and healthy plant production; (2) to provide an efficient, novel way to identify and predict functionality of DNA-based markers (genes, polymorphisms, edited genes, transgenes, genomes, and hologenomes), and (3) to directly help farmers select robust material appropriate for a specified region. The protocol is based on applying isothermal calorespirometry and consists of four steps: plant tissue preparation, calorespirometry measurements, data processing, and final validation through massive field-based data.The methodology can serve selection and improvement for a wide range of crops. Several of them are currently being tested in the author's lab. Among them are important cereals, such as wheat, barley, and rye, and diverse vegetables. However, it is critical that the protocol for measuring respiration traits be well adjusted to the plant species by considering deep knowledge on the specific physiology and functional cell biology behind the final target trait for production. Here, Daucus carota L. is chosen as an advanced example to demonstrate critical species-specific steps for protocol development. Carrot is an important global vegetable that is grown worldwide and in all climate regions (moderate, subtropical, and tropical). Recently, this species is also used in my lab as a model for studies on alternative oxidase (AOX) gene diversity and evolutionary dynamics in interaction with endophytes.
Collapse
|
30
|
Lunestad BT, Maage A, Roiha IS, Myrmel M, Svanevik CS, Duinker A. An Outbreak of Norovirus Infection from Shellfish Soup Due to Unforeseen Insufficient Heating During Preparation. Food Environ Virol 2016; 8:231-234. [PMID: 27216466 DOI: 10.1007/s12560-016-9245-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 05/17/2016] [Indexed: 05/18/2023]
Abstract
Norovirus causes large outbreaks involving all age groups and are considered the most common cause of infectious foodborne diseases worldwide. The aim of this study was to describe a norovirus outbreak connected to insufficient heat treatment during preparation of a shellfish soup in serving portions, during a company Christmas celebration in Norway, December 2013. A questionnaire sent to the employees, showed that 67 % (n = 43) of the celebration participants, reported gastrointestinal symptoms including stomach pain, vomiting, diarrhoea and light fever in the period between 24 and 48 h post celebration. Several dishes were served, including shellfish soup made with carpet shell clams (Tapes rhomboides) in porcelain cups. Consuming this soup, was the only significant risk factor for infection. Norovirus GI and GII were detected in the remaining raw shellfish. To mimic the time and temperature obtained during bivalve soup preparation, raw chopped shellfish tissue and raw cepa onion were added in porcelain cups tempered to 20 °C. To each of these cups, boiling soup base was added. The temperature in the shellfish tissue was continuously recorded, and showed a maximum of 49 °C in the period between 3 and 7 min after adding the boiling soup base. After 1 h the temperature was 30 °C. This time and temperature combination was obviously not sufficient for inactivation of norovirus present in the shellfish tissue. In conclusion, the heat-absorbing capacity of cold ingredients, utensils and table wear porcelain should not be underestimated during food production. Consumers who want to avoid eating raw shellfish, should not assume that the shellfish tissue in preparation as described in our study is adequately heat treated.
Collapse
Affiliation(s)
- Bjørn Tore Lunestad
- National Institute of Nutrition and Seafood Research, P.O. Box 2029, 5817, Nordnes, Bergen, Norway.
| | - Amund Maage
- National Institute of Nutrition and Seafood Research, P.O. Box 2029, 5817, Nordnes, Bergen, Norway
| | - Irja Sunde Roiha
- National Institute of Nutrition and Seafood Research, P.O. Box 2029, 5817, Nordnes, Bergen, Norway
| | - Mette Myrmel
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, P.O. Box 8147 Dep., 0033, Oslo, Norway
| | - Cecilie Smith Svanevik
- National Institute of Nutrition and Seafood Research, P.O. Box 2029, 5817, Nordnes, Bergen, Norway
| | - Arne Duinker
- National Institute of Nutrition and Seafood Research, P.O. Box 2029, 5817, Nordnes, Bergen, Norway
| |
Collapse
|
31
|
Chen Z, Chen H, Ni Z, Tian R, Zhang T, Jia J, Yang S. Expression and Characterization of a Novel Nitrilase from Hyperthermophilic Bacterium Thermotoga maritima MSB8. J Microbiol Biotechnol 2016; 25:1660-9. [PMID: 26059515 DOI: 10.4014/jmb.1502.02032] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The present study describes the gene cloning, overexpression and characterization of a novel nitrilase from hyperthermophilic bacterium Thermotoga maritima MSB8. The nitrilase gene consisted of 804 base pairs, encoding a protein of 268 amino acid residues with a molecular mass of 30.07 kDa after SDS-PAGE analysis. The optimal temperature and pH of the purified enzyme were 45°C and 7.5, respectively. The enzyme demonstrated good temperature tolerance, with 40% residual activity after 60 min of heat treatment at 75°C. The kinetic constants Vmax and Km of this nitrilase toward 3-cyanopyridine were 3.12 μmol/min/mg and 7.63 mM, respectively. Furthermore, this novel nitrilase exhibited a broad spectrum toward the hydrolysis of the aliphatic nitriles among the tested substrates, and particularly was specific to aliphatic dinitriles like succinonitrile, which was distinguished from most nitrilases ever reported. The catalytic efficiency kcat/Km was 0.44 /mM/s toward succinonitrile. This distinct characteristic might enable this nitrilase to be a potential candidate for industrial applications for biosynthesis of carboxylic acid.
Collapse
Affiliation(s)
- Zhi Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| | - Huayou Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China.,National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Zhong Ni
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| | - Rui Tian
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| | - Tianxi Zhang
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| | - Jinru Jia
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| | - Shengli Yang
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212000, P.R. China
| |
Collapse
|
32
|
El-Shesheny I, Hijaz F, El-Hawary I, Mesbah I, Killiny N. Impact of different temperatures on survival and energy metabolism in the Asian citrus psyllid, Diaphorina citri Kuwayama. Comp Biochem Physiol A Mol Integr Physiol 2016; 192:28-37. [PMID: 26603556 DOI: 10.1016/j.cbpa.2015.11.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 11/05/2015] [Accepted: 11/16/2015] [Indexed: 01/06/2023]
Abstract
Temperature influences the life history and metabolic parameters of insects. Asian citrus psyllid (ACP), Diaphorina citri is a tropical and subtropical pest. ACP invaded new regions around the world and threatened the citrus industry as a vector for Huanglongbing (HLB) disease. ACP is widely distributed and can survive high (up to 45 °C) and low temperatures (as low as -6 °C). The precise mechanism of temperature tolerance in ACP is poorly understood. We investigated adult survival, cellular energy balance, gene expression, and nucleotide and sugar-nucleotide changes under the effect of different temperature regimes (0 °C to 45 °C with 5 °C intervals). The optimum temperatures for survival were 20 and 25 °C. Low temperatures of 0 °C and 5 °C caused 50% mortality after 2 and 4 days respectively, while one day at high temperature (40 °C and 45 °C) caused more than 95% mortality. The lowest quantity of ATP (3.69 ± 1.6 ng/insect) and the maximum ATPase enzyme activities (57.43 ± 7.6 μU/insect) were observed at 25 °C. Correlation between ATP quantities and ATPase activity was negative. Gene expression of hsp 70, V-type proton ATPase catalytic subunit A and ATP synthase α subunit matched these results. Twenty-four nucleotides and sugar-nucleotides were quantified using HPLC in ACP adults maintained at low, high, and optimum temperatures. The nucleotide profiles were different among treatments. The ratios between AMP:ATP and ADP:ATP were significantly decreased and positively correlated to adults survival, whereas the adenylate energy charge was increased in response to low and high temperatures. Exploring energy metabolic regulation in relation with adult survival might help in understanding the physiological basis of how ACP tolerates newly invaded regions.
Collapse
|
33
|
Anttila K, Lewis M, Prokkola JM, Kanerva M, Seppänen E, Kolari I, Nikinmaa M. Warm acclimation and oxygen depletion induce species-specific responses in salmonids. ACTA ACUST UNITED AC 2015; 218:1471-7. [PMID: 25827840 DOI: 10.1242/jeb.119115] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 03/09/2015] [Indexed: 01/17/2023]
Abstract
Anthropogenic activities are greatly altering the habitats of animals, whereby fish are already encountering several stressors simultaneously. The purpose of the current study was to investigate the capacity of fish to respond to two different environmental stressors (high temperature and overnight hypoxia) separately and together. We found that acclimation to increased temperature (from 7.7±0.02°C to 14.9±0.05°C) and overnight hypoxia (daily changes from normoxia to 63-67% oxygen saturation), simulating climate change and eutrophication, had both antagonistic and synergistic effects on the capacity of fish to tolerate these stressors. The thermal tolerance of Arctic char (Salvelinus alpinus) and landlocked salmon (Salmo salar m. sebago) increased with warm acclimation by 1.3 and 2.2°C, respectively, but decreased when warm temperature was combined with overnight hypoxia (by 0.2 and 0.4°C, respectively). In contrast, the combination of the stressors more than doubled hypoxia tolerance in salmon and also increased hypoxia tolerance in char by 22%. Salmon had 1.2°C higher thermal tolerance than char, but char tolerated much lower oxygen levels than salmon at a given temperature. The changes in hypoxia tolerance were connected to the responses of the oxygen supply and delivery system. The relative ventricle mass was higher in cold- than in warm-acclimated salmon but the thickness of the compact layer of the ventricle increased with the combination of warm and hypoxia acclimation in both species. Char had also significantly larger hearts and thicker compact layers than salmon. The results illustrate that while fish can have protective responses when encountering a single environmental stressor, the combination of stressors can have unexpected species-specific effects that will influence their survival capacity.
Collapse
Affiliation(s)
- Katja Anttila
- Laboratory of Animal Physiology, Department of Biology, University of Turku, Turku 20014, Finland
| | - Mario Lewis
- Laboratory of Animal Physiology, Department of Biology, University of Turku, Turku 20014, Finland
| | - Jenni M Prokkola
- Laboratory of Animal Physiology, Department of Biology, University of Turku, Turku 20014, Finland
| | - Mirella Kanerva
- Laboratory of Animal Physiology, Department of Biology, University of Turku, Turku 20014, Finland
| | - Eila Seppänen
- Natural Resources Institute Finland (Luke), Laasalantie 9, Enonkoski 58175, Finland
| | - Irma Kolari
- Natural Resources Institute Finland (Luke), Laasalantie 9, Enonkoski 58175, Finland
| | - Mikko Nikinmaa
- Laboratory of Animal Physiology, Department of Biology, University of Turku, Turku 20014, Finland
| |
Collapse
|
34
|
Chen Z, Snow M, Lawrence CS, Church AR, Narum SR, Devlin RH, Farrell AP. Selection for upper thermal tolerance in rainbow trout (Oncorhynchus mykiss Walbaum). ACTA ACUST UNITED AC 2015; 218:803-12. [PMID: 25573825 DOI: 10.1242/jeb.113993] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Rainbow trout (Oncorhynchus mykiss Walbaum) in southern Western Australia have undergone passive selection for over 19 generations to survive high water temperatures. Based on the conceptual model of 'oxygen- and capacity-limited thermal tolerance', we measured critical thermal maximum (CTmax), maximum heart rate (fH,max) and aerobic scope to test the hypothesis that these rainbow trout can maintain aerobic scope at high temperatures through a robust cardiac performance supporting oxygen delivery. Across five family groups CTmax averaged 29.0±0.02°C. Aerobic scope was maximized at 15.8±0.3°C (Topt), while the upper pejus temperature (Tpej, set at 90% of maximum aerobic scope) was 19.9±0.3°C. Although aerobic scope decreased at temperatures above Topt, the value at 25°C remained well over 40% of the maximum. Furthermore, pharmacologically stimulated fH,max increased with temperature, reaching a peak value between 23.5±0.4 and 24.0±0.4°C (Tmax) for three family groups. The Arrhenius breakpoint temperature (TAB) for fH,max was 20.3±0.3 to 20.7±0.4°C, while the average Q10 breakpoint temperature (TQB, when the incremental Q10<1.6) for fH,max was 21.6±0.2 to 22.0±0.4°C. Collectively, fH,max progressively became less temperature dependent beyond 20°C (TAB and TQB), which coincides with the upper Tpej for aerobic scope. Although upper thermal performance indices for both aerobic scope and fH,max were compared among family groups in this population, appreciable differences were not evident. Compared with other populations of rainbow trout, the present assessment is consistent with the prediction that this strain has undergone selection and shows the ability to tolerate higher water temperatures.
Collapse
Affiliation(s)
- Zhongqi Chen
- Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4
| | - Michael Snow
- Department of Fisheries, Government of Western Australia, Research Division, PO Box 20, North Beach, Western Australia 6920, Australia
| | - Craig S Lawrence
- Department of Fisheries, Government of Western Australia, Research Division, PO Box 20, North Beach, Western Australia 6920, Australia School of Animal Biology - Aquaculture & Native Fish Breeding Laboratory, The University of Western Australia, 1 Underwood Avenue, Shenton Park, Western Australia 6008, Australia
| | - Anthony R Church
- Department of Fisheries, Government of Western Australia, Pemberton Freshwater Research Centre, Pump Hill Road, Pemberton, Western Australia 6260, Australia
| | - Shawn R Narum
- Columbia River Inter-Tribal Fish Commission, 3059F National Fish Hatchery Road, Hagerman, ID 83332, USA
| | - Robert H Devlin
- Center for Aquaculture and Environmental Research, Fisheries and Oceans Canada, 4160 Marine Drive, West Vancouver, British Columbia, Canada V7V 1N6
| | - Anthony P Farrell
- Department of Zoology, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4 Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, British Columbia, Canada V6T 1Z4
| |
Collapse
|
35
|
Newton JR, Zenger KR, Jerry DR. Next-generation transcriptome profiling reveals insights into genetic factors contributing to growth differences and temperature adaptation in Australian populations of barramundi (Lates calcarifer). Mar Genomics 2013; 11:45-52. [PMID: 23948424 DOI: 10.1016/j.margen.2013.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 07/21/2013] [Accepted: 07/24/2013] [Indexed: 10/26/2022]
Abstract
Identification of genetically-regulated adaptation in fish is a precursor to understanding how populations will respond to future climate induced stressors like temperature. Australian populations of barramundi (Lates calcarifer) show strong evidence of local adaptation to temperature. However, the phenotypic consequences of this adaptation are unknown and the genetic mechanisms underlying this response are poorly understood. In the current study, two populations of barramundi from temperature extremes of the species Australian distribution were communally reared at cool (22°C), control (28°C) and hot (36°C) water temperatures for 3.5months. Southern populations of barramundi originating from a cooler environment grew significantly faster at 22°C than northern populations of warm adapted barramundi. However, no difference in population growth was present at either 28°C or 36°C. The underlying transcriptome profile of barramundi was examined via Illumina mRNA deep sequencing to determine the major contributing gene categories giving rise to phenotypic differences in barramundi population growth. Gene ontology (GO) analysis revealed enrichment in categories relating to the regulation of peptidase activity as well as microtubule, cytoplasmic and cellular metabolic based processes. Further analysis of the GO category "microtubule based process" with associated genes from the "response to stress" category revealed an apparent re-organization of cytoskeletal elements in response to an induced cold stress in northern barramundi reared at 22°C, when compared with northern barramundi reared at 36°C. Between southern barramundi and northern barramundi reared at 36°C, an analysis of the "endopeptidase inhibitor activity" GO category in conjunction with stress genes indicated a suppression of the complement system in southern barramundi along with an increase in the cellular stress response. The results of the present study show that southern populations of barramundi exhibit underlying molecular adaptation to cooler water temperatures, but still retain a tolerance for warm water temperatures. Furthermore, GO profiling has revealed groups of genes that underlie population differences in temperature tolerance as a means to prioritize the analysis of differential gene expression in studies of local adaptation in the future.
Collapse
Affiliation(s)
- James R Newton
- Aquaculture Genetics Research Program, School of Marine and Tropical Biology and Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, Queensland 4811, Australia.
| | | | | |
Collapse
|
36
|
Demura M, Ioki M, Kawachi M, Nakajima N, Watanabe MM. Desiccation tolerance of Botryococcus braunii (Trebouxiophyceae, Chlorophyta) and extreme temperature tolerance of dehydrated cells. J Appl Phycol 2013; 26:49-53. [PMID: 24600162 PMCID: PMC3918389 DOI: 10.1007/s10811-013-0059-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 05/21/2013] [Accepted: 05/22/2013] [Indexed: 06/03/2023]
Abstract
Botryococcus braunii Kützing, a green colonial microalga, occurs worldwide in both freshwater and brackish water environments. Despite considerable attention to B. braunii as a potential source of renewable fuel, many ecophysiological properties of this alga remain unknown. Here, we examined the desiccation and temperature tolerances of B. braunii using two newly isolated strains BOD-NG17 and BOD-GJ2. Both strains survived through 6- and 8-month desiccation treatments but not through a 12-month treatment. Interestingly, the desiccation-treated cells of B. braunii gained tolerance to extreme temperature shifts, i.e., high temperature (40 °C) and freezing (-20 °C). Both strains survived for at least 4 and 10 days at 40 and -20 °C, respectively, while the untreated cells barely survived at these temperatures. These traits would enable long-distance dispersal of B. braunii cells and may account for the worldwide distribution of this algal species. Extracellular substances such as polysaccharides and hydrocarbons seem to confer the desiccation tolerance.
Collapse
Affiliation(s)
- Mikihide Demura
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8577 Japan
- National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506 Japan
| | - Motohide Ioki
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8577 Japan
- National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506 Japan
| | - Masanobu Kawachi
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8577 Japan
- National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506 Japan
| | - Nobuyoshi Nakajima
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8577 Japan
- National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506 Japan
| | - Makoto M. Watanabe
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8577 Japan
| |
Collapse
|