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Willot Q, du Toit A, de Wet S, Huisamen EJ, Loos B, Terblanche JS. Exploring the connection between autophagy and heat-stress tolerance in Drosophila melanogaster. Proc Biol Sci 2023; 290:20231305. [PMID: 37700658 PMCID: PMC10498041 DOI: 10.1098/rspb.2023.1305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/16/2023] [Indexed: 09/14/2023] Open
Abstract
Mechanisms aimed at recovering from heat-induced damages are closely associated with the ability of ectotherms to survive exposure to stressful temperatures. Autophagy, a ubiquitous stress-responsive catabolic process, has recently gained renewed attention as one of these mechanisms. By increasing the turnover of cellular structures as well as the clearance of long-lived protein and protein aggregates, the induction of autophagy has been linked to increased tolerance to a range of abiotic stressors in diverse ectothermic organisms. However, whether a link between autophagy and heat-tolerance exists in insect models remains unclear despite broad ecophysiological implications thereof. Here, we explored the putative association between autophagy and heat-tolerance using Drosophila melanogaster as a model. We hypothesized that (i) heat-stress would cause an increase of autophagy in flies' tissues, and (ii) rapamycin exposure would trigger a detectable autophagic response in adults and increase their heat-tolerance. In line with our hypothesis, we report that flies exposed to heat-stress present signs of protein aggregation and appear to trigger an autophagy-related homoeostatic response as a result. We further show that rapamycin feeding causes the systemic effect associated with target of rapamycin (TOR) inhibition, induces autophagy locally in the fly gut, and increases the heat-stress tolerance of individuals. These results argue in favour of a substantial contribution of autophagy to the heat-stress tolerance mechanisms of insects.
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Affiliation(s)
- Quentin Willot
- Centre for Invasion Biology, Department of Conservation Ecology & Entomology, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Andre du Toit
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Sholto de Wet
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Elizabeth J. Huisamen
- Centre for Invasion Biology, Department of Conservation Ecology & Entomology, Stellenbosch University, Stellenbosch 7600, South Africa
| | - Ben Loos
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch 7600, South Africa
| | - John S. Terblanche
- Centre for Invasion Biology, Department of Conservation Ecology & Entomology, Stellenbosch University, Stellenbosch 7600, South Africa
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Abstract
Winter provides many challenges for insects, including direct injury to tissues and energy drain due to low food availability. As a result, the geographic distribution of many species is tightly coupled to their ability to survive winter. In this review, we summarize molecular processes associated with winter survival, with a particular focus on coping with cold injury and energetic challenges. Anticipatory processes such as cold acclimation and diapause cause wholesale transcriptional reorganization that increases cold resistance and promotes cryoprotectant production and energy storage. Molecular responses to low temperature are also dynamic and include signaling events during and after a cold stressor to prevent and repair cold injury. In addition, we highlight mechanisms that are subject to selection as insects evolve to variable winter conditions. Based on current knowledge, despite common threads, molecular mechanisms of winter survival vary considerably across species, and taxonomic biases must be addressed to fully appreciate the mechanistic basis of winter survival across the insect phylogeny.
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Affiliation(s)
- Nicholas M Teets
- Department of Entomology, University of Kentucky, Lexington, Kentucky, USA;
| | - Katie E Marshall
- Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Julie A Reynolds
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, Ohio, USA
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3
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Transcriptional Regulation of Reproductive Diapause in the Convergent Lady Beetle, Hippodamia convergens. INSECTS 2022; 13:insects13040343. [PMID: 35447785 PMCID: PMC9026804 DOI: 10.3390/insects13040343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/23/2022] [Accepted: 03/26/2022] [Indexed: 11/29/2022]
Abstract
Simple Summary Diapause is a dormant period typically controlled by daylength that ensures an insect’s survival through harsh environmental conditions. The convergent lady beetle, Hippodamia convergens, undergoes a reproductive diapause in winter, where female ovaries remain immature and no eggs are laid. This species is an important biological control agent, but during diapause, beetles are less likely to eat pest insects. Thus, knowledge of diapause mechanisms may facilitate manipulation thereof to improve biological control. Further, molecular studies of adult diapause and diapause in Coleoptera are relatively lacking. Here, we assembled and annotated a transcriptome for this species and quantified transcript expression changes during diapause. Female beetles were sampled at three times in diapause (early, mid, and late diapause), which allowed us to characterize the molecular processes occurring at distinct transitions throughout diapause. We found that transcripts involved in flight were consistently upregulated during diapause, which is consistent with dispersal flights at this stage, while transcripts involved in ovarian development were downregulated, which is consistent with the shutdown of reproduction in diapausing females. These findings identify key regulators of diapause in H. convergens and contribute to a growing body of literature on the molecular mechanisms of diapause across the insect phylogeny. Abstract Diapause is an alternate development program that synchronizes an insect’s life cycle with seasonally abundant resources and ensures survival in unfavorable conditions. The physiological basis of diapause has been well characterized, but the molecular mechanisms regulating it are still being elucidated. Here, we present a de novo transcriptome and quantify transcript expression during diapause in the convergent lady beetle Hippodamia convergens. H. convergens is used as an augmentative biocontrol agent, and adult females undergo reproductive diapause that is regulated by photoperiod. We sampled females at three stages (early, mid, and late diapause) and compared transcript expression to non-diapausing individuals. Based on principle component analysis, the transcriptomes of diapausing beetles were distinct from non-diapausing beetles, and the three diapausing points tended to cluster together. However, there were still classes of transcripts that differed in expression across distinct phases of diapause. In general, transcripts involved in muscle function and flight were upregulated during diapause, likely to support dispersal flights that occur during diapause, while transcripts involved in ovarian development were downregulated. This information could be used to improve biological control by manipulating diapause. Additionally, our data contribute to a growing understanding of the genetic regulation of diapause across diverse insects.
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Qi X, Wang Y, Zhang G, Cao S, Xu P, Ren X, Mansour A, Niu C. Transcriptome analysis uncovers different avenues for manipulating cold performance in Chrysomya megacephala (Diptera, Calliphoridae). BULLETIN OF ENTOMOLOGICAL RESEARCH 2022; 112:1-12. [PMID: 35225171 DOI: 10.1017/s0007485321001073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Temperature strongly impacts the rates of physiological and biochemical processes, which in turn can determine the survival and population size of insects. At low temperatures performance is limited, however, cold tolerance and performance at low temperature can be improved after short- or long-term acclimation in many insect species. To understand mechanisms underlying acclimation, we sequenced and compared the transcriptome of the blowfly Chrysomya megacephala under rapid cold hardening (RCH) and long-term cold acclimation (LCA) conditions. The RCH response was dominated by genes related to immune response, spliceosome, and protein processing in endoplasmic reticulum with up-regulation during recovery from RCH. In contrast, LCA was associated with genes related to carbohydrate metabolism and cytoskeleton branching and stabilizing. Meanwhile, mRNA levels of genes related to glycerophospholipid metabolism, and some heat shock proteins (Hsps) were collectively up-regulated by both RCH and LCA. There were more genes and pathway adjustments associated with LCA than RCH. Overall, the transcriptome data provide basic information of molecular mechanisms underpinning the RCH and LCA response. The partly independent molecular responses to RCH and LCA suggest that several avenues for manipulating cold performance exist and RCH might be more effective as it only triggers fewer genes and affects the general metabolisms less. These observations provide some appropriate methods to improve cold tolerance of C. megacephala, and hold promise for developing an extended use of mass-reared C. megacephala with better cold performance as a pollinator of crops at low temperatures.
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Affiliation(s)
- Xuewei Qi
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Yaohui Wang
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Guijian Zhang
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Shuai Cao
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Penghui Xu
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Xueming Ren
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
| | - Abdelaziz Mansour
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
- Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, 12613Giza, Egypt
| | - Changying Niu
- Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan430070, China
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5
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Torson AS, Dong YW, Sinclair BJ. Help, there are ‘omics’ in my comparative physiology! J Exp Biol 2020; 223:223/24/jeb191262. [DOI: 10.1242/jeb.191262] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abstract
‘Omics’ methods, such as transcriptomics, proteomics, lipidomics or metabolomics, yield simultaneous measurements of many related molecules in a sample. These approaches have opened new opportunities to generate and test hypotheses about the mechanisms underlying biochemical and physiological phenotypes. In this Commentary, we discuss general approaches and considerations for successfully integrating omics into comparative physiology. The choice of omics approach will be guided by the availability of existing resources and the time scale of the process being studied. We discuss the use of whole-organism extracts (common in omics experiments on small invertebrates) because such an approach may mask underlying physiological mechanisms, and we consider the advantages and disadvantages of pooling samples within biological replicates. These methods can bring analytical challenges, so we describe the most easily analyzed omics experimental designs. We address the propensity of omics studies to digress into ‘fishing expeditions’ and show how omics can be used within the hypothetico-deductive framework. With this Commentary, we hope to provide a roadmap that will help newcomers approach omics in comparative physiology while avoiding some of the potential pitfalls, which include ambiguous experiments, long lists of candidate molecules and vague conclusions.
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Affiliation(s)
- Alex S. Torson
- Department of Biology, The University of Western Ontario, London, ON N6A 5B7, Canada
| | - Yun-wei Dong
- The Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao 266003, PR China
| | - Brent J. Sinclair
- Department of Biology, The University of Western Ontario, London, ON N6A 5B7, Canada
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Marshall KE, Gotthard K, Williams CM. Evolutionary impacts of winter climate change on insects. CURRENT OPINION IN INSECT SCIENCE 2020; 41:54-62. [PMID: 32711362 DOI: 10.1016/j.cois.2020.06.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/29/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
Overwintering is a serious challenge for insects, and winters are rapidly changing as climate shifts. The capacity for phenotypic plasticity and evolutionary adaptation will determine which species profit or suffer from these changes. Here we discuss current knowledge on the potential and evidence for evolution in winter-relevant traits among insect species and populations. We conclude that the best evidence for evolutionary shifts in response to changing winters remain those related to changes in phenology, but all evidence points to cold hardiness as also having the potential to evolve in response to climate change. Predicting future population sizes and ranges relies on understanding to what extent evolution in winter-related traits is possible, and remains a serious challenge.
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Affiliation(s)
| | - Karl Gotthard
- Department of Zoology, Stockholm University, Stockholm SE-106 91, Sweden
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7
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Gantz JD, Spong KE, Seroogy EA, Robertson RM, Lee RE. Effects of brief chilling and desiccation on ion homeostasis in the central nervous system of the migratory locust, Locusta migratoria. Comp Biochem Physiol A Mol Integr Physiol 2020; 249:110774. [PMID: 32712084 DOI: 10.1016/j.cbpa.2020.110774] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 01/20/2023]
Abstract
In insects, chilling, anoxia, and dehydration are cues to trigger rapid physiological responses enhancing stress tolerance within minutes. Recent evidence suggests that responses elicited by different cues are mechanistically distinct from each other, though these differences have received little attention. Further, the effects are not well studied in neural tissue. In this study, we examined how brief exposure to desiccation and chilling affect ion homeostatic mechanisms in metathoracic ganglion of the migratory locust, Locusta migratoria. Both desiccation and chilling enhanced resistance to anoxia, though only chilling hastened recovery from anoxic coma. Similarly, only chilling enhanced resistance to pharmacological perturbation of neuronal ion homeostasis. Our results indicate that chilling and desiccation trigger mechanistically distinct responses and, while both may be important for neuronal ion homeostasis, chilling has a larger effect on this tissue. SUMMARY STATEMENT: This is one of few studies to demonstrate the importance of the central nervous system in rapid acclimatory responses in insects.
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Affiliation(s)
- J D Gantz
- Department of Biology, Miami University, Oxford, OH 45056, USA; Department of Biology and Health Sciences, Hendrix College, Conway, AR 72032, USA.
| | - Kristin E Spong
- Department of Biology, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Erik A Seroogy
- Department of Biology, Miami University, Oxford, OH 45056, USA
| | | | - Richard E Lee
- Department of Biology, Miami University, Oxford, OH 45056, USA
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8
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Teets NM, Gantz JD, Kawarasaki Y. Rapid cold hardening: ecological relevance, physiological mechanisms and new perspectives. ACTA ACUST UNITED AC 2020; 223:223/3/jeb203448. [PMID: 32051174 DOI: 10.1242/jeb.203448] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Rapid cold hardening (RCH) is a type of phenotypic plasticity that allows ectotherms to quickly enhance cold tolerance in response to brief chilling (lasting minutes to hours). In this Review, we summarize the current state of knowledge of this important phenotype and provide new directions for research. As one of the fastest adaptive responses to temperature known, RCH allows ectotherms to cope with sudden cold snaps and to optimize their performance during diurnal cooling cycles. RCH and similar phenotypes have been observed across a diversity of ectotherms, including crustaceans, terrestrial arthropods, amphibians, reptiles, and fish. In addition to its well-defined role in enhancing survival to extreme cold, RCH also protects against nonlethal cold injury by preserving essential functions following cold stress, such as locomotion, reproduction, and energy balance. The capacity for RCH varies across species and across genotypes of the same species, indicating that RCH can be shaped by selection and is likely favored in thermally variable environments. Mechanistically, RCH is distinct from other rapid stress responses in that it typically does not involve synthesis of new gene products; rather, the existing cellular machinery regulates RCH through post-translational signaling mechanisms. However, the protective mechanisms that enhance cold hardiness are largely unknown. We provide evidence that RCH can be induced by multiple triggers in addition to low temperature, and that rapidly induced tolerance and cross-tolerance to a variety of environmental stressors may be a general feature of stress responses that requires further investigation.
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Affiliation(s)
- Nicholas M Teets
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA
| | - J D Gantz
- Biology Department, Hendrix College, Conway, AK 72032, USA
| | - Yuta Kawarasaki
- Department of Biology, Gustavus Adolphus College, Saint Peter, MN 56082, USA
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9
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Nadeau EAW, Teets NM. Evidence for a rapid cold hardening response in cultured Drosophila S2 cells. ACTA ACUST UNITED AC 2020; 223:jeb.212613. [PMID: 31862846 DOI: 10.1242/jeb.212613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/18/2019] [Indexed: 11/20/2022]
Abstract
The ability to quickly respond to changes in environmental temperature is critical for organisms living in thermally variable environments. To cope with sudden drops in temperature, insects and other ectotherms are capable of rapid cold hardening (RCH), in which mild chilling significantly enhances cold tolerance within minutes. While the ecological significance of RCH is well established, the mechanisms underlying RCH are still poorly understood. Previous work has demonstrated that RCH is regulated at the cellular level by post-translational signaling mechanisms, and here we tested the hypothesis that cultured cells are capable of RCH. A 2 h cold shock at -8°C significantly reduced the metabolic viability of Drosophila S2 cells, but pre-treatment with RCH at 4°C for 2 h prevented this decrease in viability. Thus, S2 cells are capable of RCH in a similar manner to whole insects and provide a new system for investigating the cell biology of RCH.
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Affiliation(s)
- Emily A W Nadeau
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA
| | - Nicholas M Teets
- Department of Entomology, University of Kentucky, Lexington, KY 40546, USA
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10
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Xinxin Z, Shuang Y, Xunming Z, Shang W, Juhong Z, Jinghui X. TMT-Based Quantitative Proteomic Profiling of Overwintering Lissorhoptrus oryzophilus. Front Physiol 2020; 10:1623. [PMID: 32038298 PMCID: PMC6985562 DOI: 10.3389/fphys.2019.01623] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/24/2019] [Indexed: 01/05/2023] Open
Abstract
Adaptations to low temperature play a critical role in restricting the geographical distribution of insects. Decreasing day lengths and temperatures trigger seasonal cold adaptations in insects. These adaptions include changes in expression at the miRNA, mRNA and protein levels. The rice water weevil (RWW), Lissorhoptrus oryzophilus, introduced from the Mississippi River, is a globally invasive pest of wetland rice that can survive at the northern border of China. To investigate the changes in expression at the protein level in overwintering female RWW adults, 6-plex tandem mass tags (TMTs) were used in overwintering and summer adults. By using a proteome database available for Curculionidae, 1077 proteins were quantified, 183 of which differed significantly between the overwintering and summer samples. To further understand these differentially expressed proteins (DEPs), bioinformatics analyses such as gene ontology (GO) enrichment analyses were performed. DEPs associated with the terms binding, structural molecule activity, catalytic activity, multicellular organismal process, extracellular region, chitin binding, metabolic process, intracellular part and organic cyclic compound binding were altered by selection during winter. The changes in the expression of these proteins suggest that the proteins are important for RWW survival in winter.
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Affiliation(s)
- Zhang Xinxin
- College of Plant Sciences, Jilin University, Changchun, China
| | - Yang Shuang
- College of Plant Sciences, Jilin University, Changchun, China
- College of Life Science and Oceanography, Shenzhen University, Shenzhen, China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Zhang Xunming
- College of Plant Sciences, Jilin University, Changchun, China
| | - Wang Shang
- College of Plant Sciences, Jilin University, Changchun, China
| | - Zhang Juhong
- College of Plant Sciences, Jilin University, Changchun, China
| | - Xi Jinghui
- College of Plant Sciences, Jilin University, Changchun, China
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11
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Yan J, Long Y, Zhou T, Ren J, Li Q, Song G, Cui Z. Dynamic Phosphoproteome Profiling of Zebrafish Embryonic Fibroblasts during Cold Acclimation. Proteomics 2020; 20:e1900257. [PMID: 31826332 DOI: 10.1002/pmic.201900257] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/24/2019] [Indexed: 11/09/2022]
Abstract
Temperature affects almost all aspects of the fish life. To cope with low temperature, fish have evolved the ability of cold acclimation for survival. However, intracellular signaling events underlying cold acclimation in fish remain largely unknown. Here, the formation of cold acclimation in zebrafish embryonic fibroblasts (ZF4) is monitored and the phosphorylation events during the process are investigated through a large-scale quantitative phosphoproteomic approach. In total, 11 474 phosphorylation sites are identified on 4066 proteins and quantified 5772 phosphosites on 2519 proteins. Serine, threonine, and tyrosine (Ser/Thr/Tyr) phosphorylation accounted for 85.5%, 13.3%, and 1.2% of total phosphosites, respectively. Among all phosphosites, 702 phosphosites on 510 proteins show differential regulation during cold acclimation of ZF4 cells. These phosphosites are divided into six clusters according to their dynamic changes during cold exposure. Kinase-substrate prediction reveals that mitogen-activated protein kinase (MAPK) among the kinase groups is predominantly responsible for phosphorylation of these phosphosites. The differentially regulated phosphoproteins are functionally associated with various cellular processes such as regulation of actin cytoskeleton and MAPK signaling pathway. These data enrich the database of protein phosphorylation sites in zebrafish and provide key clues for the elucidation of intracellular signaling networks during cold acclimation of fish.
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Affiliation(s)
- Junjun Yan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Long
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Tong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Ren
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qing Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Guili Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
| | - Zongbin Cui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China.,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hubei, Wuhan, 430072, China
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12
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Kawarasaki Y, Welle AM, Elnitsky MA. Is rapid cold-hardening an aerobic process? Characterization of changes in metabolic activity during its induction and effects of anoxia in flesh fly. JOURNAL OF INSECT PHYSIOLOGY 2020; 120:103996. [PMID: 31837292 DOI: 10.1016/j.jinsphys.2019.103996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 12/06/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
Rapid cold-hardening (RCH) is a type of phenotypic plasticity that promotes a swift improvement of cold tolerance in insects. A brief exposure to mild cold dramatically increases insect survival to a subsequent cold exposure that would be lethal otherwise. In adult male flesh fly, Sarcophaga bullata, as little as 15 min at 5 °C significantly improved organismal survival at -7°C from 0 to 66.7 ± 11.1%. In this study, we investigated whether this RCH response is an aerobic process in S. bullata by characterizing changes in metabolic activity during its induction. At the level of whole organism, CO2 production continued at a level above our detection limit, and a relatively greater rate was observed during the early phase before it stabilized after ~1 h of the RCH induction. Similarly, in isolated flight muscle tissues, those maintained at 5 °C for 10 min exhibited significantly greater rates of oxygen consumption, compared to those maintained at 5 °C for 1 h (2.82 ± 0.29 vs. 1.36 ± 0.22 μl O2 mg-1 DM h-1). When these tissues were exposed to LaCl3, a treatment that should inhibit RCH ex vivo, oxygen consumption rates of the muscles were reduced significantly to a level similar to those that had been maintained at 5 °C for 1 h. Interestingly, however, the RCH response was still evident among individuals exposed to chilling under anoxia. Compared to those exposed to anoxia for 30 min only at 25 °C, flies exposed to 5 °C for 2 h under anoxia following the initial exposure exhibited a significantly greater level of cold tolerance at -7.5 °C (41.7 ± 7.1 vs. 91.8 ± 3.9%). Our results suggest that while relatively greater rates of metabolic activity are associated with the early phase of the RCH induction, it can proceed under the anoxic condition, thereby suggesting its independence to aerobic respiration.
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Affiliation(s)
- Yuta Kawarasaki
- Department of Biology, Gustavus Adolphus College, Saint Peter, MN 56082, USA.
| | - Alyssa M Welle
- Department of Biology, Gustavus Adolphus College, Saint Peter, MN 56082, USA
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13
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Zhu B, Zhou Q, Zhen D, Wang Y, Cai Q, Chen P. Preparation of TiO2/Bi/Fe/Zr nanocomposite for the highly selective enrichment of phosphopeptides. Talanta 2019; 194:870-875. [DOI: 10.1016/j.talanta.2018.10.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/09/2018] [Accepted: 10/22/2018] [Indexed: 02/07/2023]
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14
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Zhen D, Gao C, Zhu B, Zhou Q, Li C, Chen P, Cai Q. Preparation of Bi0.15Fe0.15TiO2 Nanocomposites for the Highly Selective Enrichment of Phosphopeptides. Anal Chem 2018; 90:12414-12421. [DOI: 10.1021/acs.analchem.8b00606] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Deshuai Zhen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
- College of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun 558000, P. R. China
| | - Chan Gao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Baode Zhu
- State Key Laboratory of Developmental Biology of Freshwater Fish, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha 410081, P. R. China
| | - Qian Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha 410081, P. R. China
| | - Chenyi Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ping Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish, The National & Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha 410081, P. R. China
| | - Qingyun Cai
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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Chen B, Feder ME, Kang L. Evolution of heat-shock protein expression underlying adaptive responses to environmental stress. Mol Ecol 2018; 27:3040-3054. [PMID: 29920826 DOI: 10.1111/mec.14769] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/03/2018] [Accepted: 06/07/2018] [Indexed: 12/27/2022]
Abstract
Heat-shock proteins (Hsps) and their cognates are primary mitigators of cell stress. With increasingly severe impacts of climate change and other human modifications of the biosphere, the ability of the heat-shock system to affect evolutionary fitness in environments outside the laboratory and to evolve in response is topic of growing importance. Since the last major reviews, several advances have occurred. First, demonstrations of the heat-shock response outside the laboratory now include many additional taxa and environments. Many of these demonstrations are only correlative, however. More importantly, technical advances in "omic" quantification of nucleic acids and proteins, genomewide association analysis, and manipulation of genes and their expression have enabled the field to move beyond correlation. Several consequent advances are already evident: The pathway from heat-shock gene expression to stress tolerance in nature can be extremely complex, mediated through multiple biological processes and systems, and even multiple species. The underlying genes are more numerous, diverse and variable than previously appreciated, especially with respect to their regulatory variation and epigenetic changes. The impacts and limitations (e.g., due to trade-offs) of natural selection on these genes have become more obvious and better established. At last, as evolutionary capacitors, Hsps may have distinctive impacts on the evolution of other genes and ecological consequences.
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Affiliation(s)
- Bing Chen
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Martin E Feder
- Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, Illinois
| | - Le Kang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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16
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Yang S, Zhang X, Wang J, Wang S, Pan Y, Zhang J, Xi J. Identification and analysis of up-regulated proteins in Lissorhoptrus oryzophilus adults for rapid cold hardening. Gene 2018; 642:9-15. [DOI: 10.1016/j.gene.2017.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/17/2017] [Accepted: 11/01/2017] [Indexed: 11/26/2022]
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17
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Herrmann M, Ravindran SP, Schwenk K, Cordellier M. Population transcriptomics in Daphnia
: The role of thermal selection. Mol Ecol 2017; 27:387-402. [DOI: 10.1111/mec.14450] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 10/22/2017] [Accepted: 11/02/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Maike Herrmann
- Institute for Environmental Sciences; University Koblenz-Landau; Landau in der Pfalz Germany
| | | | - Klaus Schwenk
- Institute for Environmental Sciences; University Koblenz-Landau; Landau in der Pfalz Germany
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18
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Colinet H, Pineau C, Com E. Large scale phosphoprotein profiling to explore Drosophila cold acclimation regulatory mechanisms. Sci Rep 2017; 7:1713. [PMID: 28490779 PMCID: PMC5431823 DOI: 10.1038/s41598-017-01974-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 04/10/2017] [Indexed: 11/16/2022] Open
Abstract
The regulatory mechanisms involved in the acquisition of thermal tolerance are unknown in insects. Reversible phosphorylation is a widespread post-translational modification that can rapidly alter proteins function(s). Here, we conducted a large-scale comparative screening of phosphorylation networks in adult Drosophila flies that were cold-acclimated versus control. Using a modified SIMAC method followed by a multiple MS analysis strategy, we identified a large collection of phosphopeptides (about 1600) and phosphoproteins (about 500) in both groups, with good enrichment efficacy (80%). The saturation curves from the four biological replicates revealed that the phosphoproteome was rather well covered under our experimental conditions. Acclimation evoked a strong phosphoproteomic signal characterized by large sets of unique and differential phosphoproteins. These were involved in several major GO superclusters of which cytoskeleton organization, positive regulation of transport, cell cycle, and RNA processing were particularly enriched. Data suggest that phosphoproteomic changes in response to acclimation were mainly localized within cytoskeletal network, and particularly within microtubule associated complexes. This study opens up novel research avenues for exploring the complex regulatory networks that lead to acquired thermal tolerance.
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Affiliation(s)
- Hervé Colinet
- Université de Rennes 1, UMR CNRS 6553 ECOBIO, 263 avenue du Général-Leclerc, 35042, Rennes, France.
| | - Charles Pineau
- Protim, Inserm U1085, IRSET, Campus de Beaulieu, 35042, Rennes, France
| | - Emmanuelle Com
- Protim, Inserm U1085, IRSET, Campus de Beaulieu, 35042, Rennes, France
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19
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Pi Z, Zhao ML, Peng XJ, Shen SH. Phosphoproteomic Analysis of Paper Mulberry Reveals Phosphorylation Functions in Chilling Tolerance. J Proteome Res 2017; 16:1944-1961. [PMID: 28357858 DOI: 10.1021/acs.jproteome.6b01016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Paper mulberry is a valuable woody species with a good chilling tolerance. In this study, phosphoproteomic analysis, physiological measurement, and mRNA quantification were employed to explore the molecular mechanism of chilling (4 °C) tolerance in paper mulberry. After chilling for 6 h, 427 significantly changed phosphoproteins were detected in paper mulberry seedlings without obvious physiological injury. When obvious physiological injury occurred after chilling for 48 h, a total of 611 phosphoproteins were found to be significantly changed at the phosphorylation level. Several protein kinases, especially CKII, were possibly responsible for these changes according to conserved sequence analysis. The results of Gene Ontology analysis showed that phosphoproteins were mainly responsible for signal transduction, protein modification, and translation during chilling. Additionally, transport and cellular component organization were enriched after chilling for 6 and 48 h, respectively. On the basis of the protein-protein interaction network analysis, a protein kinase and phosphatases hub protein (P1959) were found to be involved in cross-talk between Ca2+, BR, ABA, and ethylene-mediated signaling pathways. We also highlighted the phosphorylation of BpSIZ1 and BpICE1 possibly impacted on the CBF/DREB-responsive pathway. From these results, we developed a schematic for the chilling tolerance mechanism at phosphorylation level.
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Affiliation(s)
- Zhi Pi
- Key Laboratory of Plant Resources, Institute of Botany, the Chinese Academy of Sciences , Beijing 100093, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Mei-Ling Zhao
- Key Laboratory of Plant Resources, Institute of Botany, the Chinese Academy of Sciences , Beijing 100093, China.,University of Chinese Academy of Sciences , Beijing 100049, China
| | - Xian-Jun Peng
- Key Laboratory of Plant Resources, Institute of Botany, the Chinese Academy of Sciences , Beijing 100093, China
| | - Shi-Hua Shen
- Key Laboratory of Plant Resources, Institute of Botany, the Chinese Academy of Sciences , Beijing 100093, China
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