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Liang C, Li L, Zhao H, Lan M, Tang Y, Zhang M, Qin D, Wu G, Gao X. Identification and expression analysis of heat shock protein family genes of gall fly (Procecidochares utilis) under temperature stress. Cell Stress Chaperones 2023; 28:303-320. [PMID: 37071342 PMCID: PMC10167091 DOI: 10.1007/s12192-023-01338-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 04/19/2023] Open
Abstract
Heat shock proteins (HSP) are molecular chaperones involved in many normal cellular processes and environmental stresses. At the genome-wide level, there were no reports on the diversity and phylogeny of the heat shock protein family in Procecidochares utilis. In this study, 43 HSPs were identified from the genome of P. utilis, including 12 small heat shock proteins (sHSPs), 23 heat shock protein 40 (DNAJs), 6 heat shock protein 70 (HSP70s), and 2 heat shock protein 90 (HSP90s). The characteristics of these candidates HSP genes were analyzed by BLAST, and then phylogenetic analysis was carried out. Quantitative real-time PCR (qRT-PCR) was used to analyze the spatiotemporal expression patterns of sHSPs and HSP70s in P. utilis after temperature stress. Results showed that most sHSPs could be induced under heat stress during the adult stage of P. utilis, while a few HSP70s could be induced at the larval stage. This study provides an information framework for the HSP family of P. utilis. Moreover, it lays an important foundation for a better understanding of the role of HSP in the adaptability of P. utilis to various environments.
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Affiliation(s)
- Chen Liang
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Lifang Li
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Hang Zhao
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Mingxian Lan
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Yongyu Tang
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Man Zhang
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Deqiang Qin
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Guoxing Wu
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
| | - Xi Gao
- College of Plant Protection, Yunnan Agricultural University, Kunming, Yunnan, 650201 China
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Fitness Analysis and Transcriptome Profiling Following Repeated Mild Heat Stress of Varying Frequency in Drosophila melanogaster Females. BIOLOGY 2021; 10:biology10121323. [PMID: 34943239 PMCID: PMC8698867 DOI: 10.3390/biology10121323] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022]
Abstract
Simple Summary We studied the effect of mild heat stress (38 °C, 1 h) occurring once a day or once a week on D. melanogaster fertility, longevity, body composition metabolism and differential gene expression in fat body and adjacent tissues. Weekly stress in the first two weeks did not affect longevity but caused a decrease in fat content and an increase in the total level of fertility. Daily stress caused a significant longevity, fertility and fat content decrease, but an increase in carbohydrate levels compared with the control group. These data agree well with the results of transcriptome analysis, which demonstrated significant changes in expression levels of genes involved in proteolysis/digestion following daily stress. Heat shock protein 23 and stress-inducible humoral factor Turandot gene network are also involved. It is notable that daily and weekly heat stress resulted in different changes in metabolism, fitness and differential gene expression. Abstract Understanding how repeated stress affects metabolic and physiological functions in the long run is of crucial importance for evaluating anthropogenic pressure on the environment. We investigated fertility, longevity and metabolism in D. melanogaster females exposed to short-term heat stress (38 °C, 1 h) repeated daily or weekly. Daily stress was shown to cause a significant decrease in both fertility and longevity, as well as in body mass and triglyceride (fat) content, but a significant increase in trehalose and glucose content. Weekly stress did not affect longevity and carbohydrate metabolism but resulted in a significant decrease in body mass and fat content. Weekly stress did not affect the total level of fertility, despite sharp fertility drops on the exact days of stressing. However, stressing insects weekly, only in the first two weeks after eclosion, caused a significant increase in the total level of fertility. The analysis of differentially expressed genes in the fat bodies and adjacent tissues of researched groups with the use of RNA-Seq profiling revealed changes in signal pathways related to proteolysis/digestion, heat shock protein 23, and in the tightly linked stress-inducible humoral factor Turandot gene network.
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Li H, Qiao H, Liu Y, Li S, Tan J, Hao D. Characterization, expression profiling, and thermal tolerance analysis of heat shock protein 70 in pine sawyer beetle, Monochamus alternatus hope (Coleoptera: Cerambycidae). BULLETIN OF ENTOMOLOGICAL RESEARCH 2021; 111:217-228. [PMID: 32935660 DOI: 10.1017/s0007485320000541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Monochamus alternatus Hope (Coleoptera: Cerambycidae) warrants attention as a dominant transmission vector of the pinewood nematode, and it exhibits tolerance to high temperature. Heat shock protein 70 (HSP70) family members, including inducible HSP70 and heat shock cognate protein 70 (HSC70), are major contributors to the molecular chaperone networks of insects under heat stress. In this regard, we specifically cloned and characterized three MaltHSP70s and three MaltHSC70s. Bioinformatics analysis on the deduced amino acid sequences showed these genes, having close genetic relationships with HSP70s of Coleopteran species, collectively shared conserved signature structures and ATPase domains. Subcellular localization prediction revealed the HSP70s of M. alternatus were located not only in the cytoplasm and endoplasmic reticulum but also in the nucleus and mitochondria. The transcript levels of MaltHSP70s and MaltHSC70s in each state were significantly upregulated by exposure to 35-50°C for early 3 h, while MaltHSP70s reached a peak after exposure to 45°C for 2-3 h in contrast to less-upregulated MaltHSC70s. In terms of MaltHSP70s, the expression threshold in females was lower than that in males. Also, both fat bodies and Malpighian tubules were the tissues most sensitive to heat stress in M. alternatus larvae. Lastly, the ATPase activity of recombinant MaltHSP70-2 in vitro remained stable at 25-40°C, and this recombinant availably enhanced the thermotolerance of Escherichia coli. Overall, our findings unraveled HSP70s might be the intrinsic mediators of the strong heat tolerance of M. alternatus due to their stabilized structure and bioactivity.
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Affiliation(s)
- Hui Li
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Heng Qiao
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Yujie Liu
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Shouyin Li
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Jiajin Tan
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
| | - Dejun Hao
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- College of Forestry, Nanjing Forestry University, Nanjing, China
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Schoville SD, Simon S, Bai M, Beethem Z, Dudko RY, Eberhard MJB, Frandsen PB, Küpper SC, Machida R, Verheij M, Willadsen PC, Zhou X, Wipfler B. Comparative transcriptomics of ice-crawlers demonstrates cold specialization constrains niche evolution in a relict lineage. Evol Appl 2021; 14:360-382. [PMID: 33664782 PMCID: PMC7896716 DOI: 10.1111/eva.13120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/25/2020] [Accepted: 08/17/2020] [Indexed: 12/26/2022] Open
Abstract
Key changes in ecological niche space are often critical to understanding how lineages diversify during adaptive radiations. However, the converse, or understanding why some lineages are depauperate and relictual, is more challenging, as many factors may constrain niche evolution. In the case of the insect order Grylloblattodea, highly conserved thermal breadth is assumed to be closely tied to their relictual status, but has not been formerly tested. Here, we investigate whether evolutionary constraints in the physiological tolerance of temperature can help explain relictualism in this lineage. Using a comparative transcriptomics approach, we investigate gene expression following acute heat and cold stress across members of Grylloblattodea and their sister group, Mantophasmatodea. We additionally examine patterns of protein evolution, to identify candidate genes of positive selection. We demonstrate that cold specialization in Grylloblattodea has been accompanied by the loss of the inducible heat shock response under both acute heat and cold stress. Additionally, there is widespread evidence of selection on protein-coding genes consistent with evolutionary constraints due to cold specialization. This includes positive selection on genes involved in trehalose transport, metabolic function, mitochondrial function, oxygen reduction, oxidative stress, and protein synthesis. These patterns of molecular adaptation suggest that Grylloblattodea have undergone evolutionary trade-offs to survive in cold habitats and should be considered highly vulnerable to climate change. Finally, our transcriptomic data provide a robust backbone phylogeny for generic relationships within Grylloblattodea and Mantophasmatodea. Major phylogenetic splits in each group relate to arid conditions driving biogeographical patterns, with support for a sister-group relationship between North American Grylloblatta and Altai-Sayan Grylloblattella, and a range disjunction in Namibia splitting major clades within Mantophasmatodea.
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Affiliation(s)
| | - Sabrina Simon
- Biosystematics GroupWageningen University & ResearchPB WageningenThe Netherlands
| | - Ming Bai
- Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijingChina
| | - Zachary Beethem
- Department of EntomologyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Present address:
Department of Biomedical SciencesSchool of Veterinary MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
| | - Roman Y. Dudko
- Institute of Systematics and Ecology of AnimalsSiberian Branch of the Russian Academy of SciencesNovosibirskRussia
- Tomsk State UniversityTomskRussia
| | - Monika J. B. Eberhard
- Zoological Institute and MuseumGeneral Zoology and Zoological SystematicsUniversity of GreifswaldGreifswaldGermany
| | - Paul B. Frandsen
- Department of Plant & Wildlife SciencesBrigham Young UniversityProvoUTUSA
- Data Science LabOffice of the Chief Information OfficerSmithsonian InstitutionWashingtonDCU.S.A
| | - Simon C. Küpper
- Zoological Institute and MuseumGeneral Zoology and Zoological SystematicsUniversity of GreifswaldGreifswaldGermany
| | - Ryuichiro Machida
- Sugadaira Research StationMountain Science CenterUniversity of TsukubaUeda, NaganoJapan
| | - Max Verheij
- Biosystematics GroupWageningen University & ResearchPB WageningenThe Netherlands
| | - Peter C. Willadsen
- Department of EntomologyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Present address:
Department of Entomology and Plant PathologyNorth Carolina State UniversityCampus Box 7613RaleighNCUSA
| | - Xin Zhou
- Department of EntomologyCollege of Plant ProtectionChina Agricultural UniversityBeijingChina
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Chen Y, Jiang W, Liu X, Du Y, Liu L, Ordovas JM, Lai CQ, Shen L. Curcumin supplementation improves heat-stress-induced cardiac injury of mice: physiological and molecular mechanisms. J Nutr Biochem 2020; 78:108331. [DOI: 10.1016/j.jnutbio.2019.108331] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 10/13/2019] [Accepted: 12/20/2019] [Indexed: 12/21/2022]
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Three Quantitative Trait Loci Explain More than 60% of Variation for Chill Coma Recovery Time in a Natural Population of Drosophila ananassae. G3-GENES GENOMES GENETICS 2019; 9:3715-3725. [PMID: 31690597 PMCID: PMC6829138 DOI: 10.1534/g3.119.400453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Ectothermic species such as insects are particularly vulnerable to climatic fluctuations. Nevertheless, many insects that evolved and diversified in the tropics have successfully colonized temperate regions all over the globe. To shed light on the genetic basis of cold tolerance in such species, we conducted a quantitative trait locus (QTL) mapping experiment for chill coma recovery time (CCRT) in Drosophila ananassae, a cosmopolitan species that has expanded its range from tropical to temperate regions. We created a mapping population of recombinant inbred advanced intercross lines (RIAILs) from two founder strains with diverging CCRT phenotypes. The RIAILs were phenotyped for their CCRT and, together with the founder strains, genotyped for polymorphic markers with double-digest restriction site-associated DNA (ddRAD) sequencing. Using a hierarchical mapping approach that combined standard interval mapping and a multiple-QTL model, we mapped three QTL which altogether explained 64% of the phenotypic variance. For two of the identified QTL, we found evidence of epistasis. To narrow down the list of cold tolerance candidate genes, we cross-referenced the QTL intervals with genes that we previously identified as differentially expressed in response to cold in D. ananassae, and with thermotolerance candidate genes of D. melanogaster. Among the 58 differentially expressed genes that were contained within the QTL, GF15058 showed a significant interaction of the CCRT phenotype and gene expression. Further, we identified the orthologs of four D. melanogaster thermotolerance candidate genes, MtnA, klarsicht, CG5246 (D.ana/GF17132) and CG10383 (D.ana/GF14829) as candidates for cold tolerance in D. ananassae.
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Zhang XX, Qin J, Yuan JW, Lu MX, Du YZ. Cloning of a new HSP70 gene from western flowerthrips, Frankliniella occidentalis, and expression patterns during thermal stress. PeerJ 2019; 7:e7687. [PMID: 31579591 PMCID: PMC6765361 DOI: 10.7717/peerj.7687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/19/2019] [Indexed: 11/29/2022] Open
Abstract
Frankliniella occidentalis (Pergande) is an invasive pest that endangers a wide variety of horticultural and agronomic crops. HSP70 is the most important member of the heat shock protein (HSP) family and plays an important role in insect thermal tolerance. In this study, a new gene encoding HSP70 from F. occidentalis, Fohsp706, was selected from the F. occidentalis transcriptome exposed to thermal stress (40 °C) and cloned by RT-PCR and RACE. Further characterization indicated that Fohsp706 localizes to the cytoplasm and does not contain introns. Quantitative real-time reverse transcriptase PCR indicated that Fohsp706 expression was significantly up-regulated by thermal stress; furthermore, there were significant differences in Fohsp706 expression in adults and second instar nymphs after heat stress. Our results indicated that Fohsp706 contributes to thermotolerance in F. occidentalis and provides another example of how this pest adapts to unfavorable environmental conditions.
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Affiliation(s)
- Xiao-Xiang Zhang
- College of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Jing Qin
- College of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Jia-Wen Yuan
- College of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Ming-Xing Lu
- College of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China
| | - Yu-Zhou Du
- College of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education, Yangzhou University, Yangzhou, China
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8
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Königer A, Grath S. Transcriptome Analysis Reveals Candidate Genes for Cold Tolerance in Drosophila ananassae. Genes (Basel) 2018; 9:genes9120624. [PMID: 30545157 PMCID: PMC6315829 DOI: 10.3390/genes9120624] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/19/2018] [Accepted: 12/03/2018] [Indexed: 12/25/2022] Open
Abstract
Coping with daily and seasonal temperature fluctuations is a key adaptive process for species to colonize temperate regions all over the globe. Over the past 18,000 years, the tropical species Drosophila ananassae expanded its home range from tropical regions in Southeast Asia to more temperate regions. Phenotypic assays of chill coma recovery time (CCRT) together with previously published population genetic data suggest that only a small number of genes underlie improved cold hardiness in the cold-adapted populations. We used high-throughput RNA sequencing to analyze differential gene expression before and after exposure to a cold shock in cold-tolerant lines (those with fast chill coma recovery, CCR) and cold-sensitive lines (slow CCR) from a population originating from Bangkok, Thailand (the ancestral species range). We identified two candidate genes with a significant interaction between cold tolerance and cold shock treatment: GF14647 and GF15058. Further, our data suggest that selection for increased cold tolerance did not operate through the increased activity of heat shock proteins, but more likely through the stabilization of the actin cytoskeleton and a delayed onset of apoptosis.
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Affiliation(s)
- Annabella Königer
- Division of Evolutionary Biology, Faculty of Biology, LMU Munich, Grosshaderner Str. 2, 82152 Planegg-Martinsried, Germany.
| | - Sonja Grath
- Division of Evolutionary Biology, Faculty of Biology, LMU Munich, Grosshaderner Str. 2, 82152 Planegg-Martinsried, Germany.
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Chen Y, Liu X, Jiang C, Liu L, Ordovas JM, Lai CQ, Shen L. Curcumin supplementation increases survival and lifespan in Drosophila under heat stress conditions. Biofactors 2018; 44:577-587. [PMID: 30488487 DOI: 10.1002/biof.1454] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/08/2018] [Accepted: 08/15/2018] [Indexed: 11/07/2022]
Abstract
Harsh climate induces physiological stress thus compromising organismal survival. Our previous studies demonstrated that curcumin (CUR) supplementation increased survival of turtle under heat stress (HS). Here, we span this work to investigate the survival and lifespan of HS Drosophila fed a diet supplemented with CUR. For this purpose, female and male flies were fed basal diet (N) and CUR diet (0.2 mg/g), and exposed to three conditions: 25°C and 29°C continuously, and 34 °C for 2 h at days 1, 4, and 7, then kept at 25 °C. Lifespan analysis showed that, compared to N-25 °C flies, the mean lifespans of N-29 °C and N-34 °C flies were decreased significantly by 8.5-15.7% in males, and 3.7-7.9% in females. Conversely, in the CUR-supplemented diet, mean lifespans of C-29 °C and C-34 °C flies were significantly extended by 8.7-16.4% in males, and by 8.9-12.8% in females, compared to that of temperature-matched flies fed basal diets. The MDA levels of C-34 °C flies were significantly lower than those of N-34 °C flies, indicating CUR reduced oxidative stress caused by HS. Furthermore, CUR palliated the increased oxidative stress caused by HS, by increasing the expression of SOD1, CAT, and PHGPx and decreasing the expression of Hsp70 and Hsp83. Our results indicated that CUR supplementation increases the survival rate of Drosophila by enhancing thermal tolerance. © 2018 BioFactors, 44(6):577-587, 2018.
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Affiliation(s)
- Yong Chen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Xin Liu
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Chenmin Jiang
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Liang Liu
- Department of Statistics, The University of Georgia, Athens, GA, USA
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
- IMDEA Alimentacion, Madrid, Spain
| | - Chao-Qiang Lai
- USDA ARS, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Lirong Shen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
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Li X, Luo L, Karthi S, Zhang K, Luo J, Hu Q, Weng Q. Effects of 200 Gy 60Co-γ Radiation on the Regulation of Antioxidant Enzymes, Hsp70 Genes, and Serum Molecules of Plutella xylostella (Linnaeus). Molecules 2018; 23:molecules23051011. [PMID: 29701645 PMCID: PMC6099622 DOI: 10.3390/molecules23051011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 04/19/2018] [Accepted: 04/23/2018] [Indexed: 12/18/2022] Open
Abstract
The diamondback moth, Plutella xylostella (Linnaeus), is one of the notorious pests causing substantial loses to many cruciferous vegetables across the nations. The effects of 60Co-γ radiation on physiology of P. xylostella were investigated and the results displayed that 200 Gy irradiation significantly alters the antioxidant enzyme regulation in six-day-old male pupae of P. xylostella. First, in our research, we detected Oxidase system and stress response mechanism of irradiated pupae, the results displayed that 200 Gy irradiation significantly alters the antioxidant enzyme regulation in six-day-old male pupae of P. xylostella. The levels of superoxide dismutase (SOD) and catalase (CAT) were increased significantly in contrast the level of peroxidase (POD) and glutathione S-transferase (GST) were decreased in 12–24 h post-treatment. The heat shock proteins (Hsps) gene expression level was significant increasing, maximum > 2-folds upregulation of genes were observed in peak. However, they also had a trend of gradual recovery with development. Second, we detected the testis lactate dehydrogenase (LDH) and acid phosphatase (ACP) activity found that in male adults testis they increased significantly than control during its development. Thus the present research investigation highlights that the 60Co-γ radiation treatments alters the physiological development of diamondback moth. The results showed that 200 Gy dosage resulted in stress damage to the body and reproductive system of the diamondback moth.
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Affiliation(s)
- Xiaoxue Li
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
| | - Lingyan Luo
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
| | - Sengodan Karthi
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
| | - Ke Zhang
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
| | - Jianjun Luo
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
| | - Qiongbo Hu
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
- Key Laboratory of Integrated Pest Management on Crops in South China, Ministry of Agriculture, Guangzhou 510642, China.
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, Guangzhou 510642, China.
| | - Qunfang Weng
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Key Laboratory of Natural Pesticide & Chemical Biology, Ministry of Education, Guangzhou 510642, China.
- Key Laboratory of Integrated Pest Management on Crops in South China, Ministry of Agriculture, Guangzhou 510642, China.
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, Guangzhou 510642, China.
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Ramirez L, Negri P, Sturla L, Guida L, Vigliarolo T, Maggi M, Eguaras M, Zocchi E, Lamattina L. Abscisic acid enhances cold tolerance in honeybee larvae. Proc Biol Sci 2018; 284:rspb.2016.2140. [PMID: 28381619 DOI: 10.1098/rspb.2016.2140] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 03/08/2017] [Indexed: 12/14/2022] Open
Abstract
The natural composition of nutrients present in food is a key factor determining the immune function and stress responses in the honeybee (Apis mellifera). We previously demonstrated that a supplement of abscisic acid (ABA), a natural component of nectar, pollen, and honey, increases honeybee colony survival overwinter. Here we further explored the role of ABA in in vitro-reared larvae exposed to low temperatures. Four-day-old larvae (L4) exposed to 25°C for 3 days showed lower survival rates and delayed development compared to individuals growing at a standard temperature (34°C). Cold-stressed larvae maintained higher levels of ABA for longer than do larvae reared at 34°C, suggesting a biological significance for ABA. Larvae fed with an ABA-supplemented diet completely prevent the low survival rate due to cold stress and accelerate adult emergence. ABA modulates the expression of genes involved in metabolic adjustments and stress responses: Hexamerin 70b, Insulin Receptor Substrate, Vitellogenin, and Heat Shock Proteins 70. AmLANCL2, the honeybee ABA receptor, is also regulated by cold stress and ABA. These results support a role for ABA increasing the tolerance of honeybee larvae to low temperatures through priming effects.
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Affiliation(s)
- Leonor Ramirez
- Instituto de Investigaciones Biológicas, CONICET - Universidad Nacional de Mar del Plata (UNMdP), CC 1245, 7600 Mar del Plata, Argentina
| | - Pedro Negri
- Centro de Investigación en Abejas Sociales (CIAS), FCEyN, UNMdP, 7600 Mar del Plata, Argentina
| | - Laura Sturla
- DIMES-Sezione Biochimica, Università degli Studi di Genova, Viale Benedetto XV, 116132 Genova, Italia
| | - Lucrezia Guida
- DIMES-Sezione Biochimica, Università degli Studi di Genova, Viale Benedetto XV, 116132 Genova, Italia
| | - Tiziana Vigliarolo
- DIMES-Sezione Biochimica, Università degli Studi di Genova, Viale Benedetto XV, 116132 Genova, Italia
| | - Matías Maggi
- Centro de Investigación en Abejas Sociales (CIAS), FCEyN, UNMdP, 7600 Mar del Plata, Argentina
| | - Martín Eguaras
- Centro de Investigación en Abejas Sociales (CIAS), FCEyN, UNMdP, 7600 Mar del Plata, Argentina
| | - Elena Zocchi
- DIMES-Sezione Biochimica, Università degli Studi di Genova, Viale Benedetto XV, 116132 Genova, Italia
| | - Lorenzo Lamattina
- Instituto de Investigaciones Biológicas, CONICET - Universidad Nacional de Mar del Plata (UNMdP), CC 1245, 7600 Mar del Plata, Argentina
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Harada E, Goto SG. Upregulation of heat-shock proteins in larvae, but not adults, of the flesh fly during hot summer days. Cell Stress Chaperones 2017; 22:823-831. [PMID: 28597340 PMCID: PMC5655370 DOI: 10.1007/s12192-017-0812-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 01/21/2023] Open
Abstract
Heat-shock proteins (HSPs) are highly expressed when organisms are exposed to thermal stresses. The HSPs are considered to play significant roles in thermal adaptation because they function as molecular chaperones facilitating proper protein synthesis. The expression of HSPs under field conditions, however, has not been evaluated much, and their importance, based on the ecological contexts in nature, is still unclear. We investigated this aspect in the larvae and adults of the flesh fly, Sarcophaga similis. These larvae spend their larval life in the carrion or faeces of vertebrates; therefore, they are less mobile and are occasionally exposed to high temperature. In contrast, the adults of this species can fly and, therefore, they are highly mobile. Massive transcription of Hsps was detected both in the larvae and adults in a laboratory heat-shock experiment. The larvae in the field showed no or less Hsp production on thermally mild days, whereas considerable upregulation of Hsp expression was detected on days with high temperature. The adults can also be exposed to thermal stress as high as 40 °C or higher in the field. However, most of the flies showed no or less Hsp expression. The observations in the experimental cage under field conditions revealed behavioural thermoregulation of adults through microhabitat selection. The present study demonstrates ontogenetic alteration of the strategy to overcome thermal stress in an insect; in the field, less mobile larvae use physiological protection against heat (HSP production), whereas highly mobile adults avoid the stress behaviourally (through microhabitat selection).
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Affiliation(s)
- Eri Harada
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Shin G Goto
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan.
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Zhang LJ, Chen JL, Yang BL, Kong XG, Bourguet D, Wu G. Thermotolerance, oxidative stress, apoptosis, heat-shock proteins and damages to reproductive cells of insecticide-susceptible and -resistant strains of the diamondback moth Plutella xylostella. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:513-526. [PMID: 28137318 DOI: 10.1017/s0007485317000049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we investigated thermotolerance, several physiological responses and damage to reproductive cells in chlorpyrifos-resistant (Rc) and -susceptible (Sm) strains of the diamondback moth, Plutella xylostella subjected to heat stress. The chlorpyrifos resistance of these strains was mediated by a modified acetylcholinesterase encoded by an allele, ace1R, of the ace1 gene. Adults of the Rc strain were less heat resistant than those of the Sm strain; they also had lower levels of enzymatic activity against oxidative damage, higher reactive oxygen species contents, weaker upregulation of two heat shock protein (hsp) genes (hsp69s and hsp20), and stronger upregulation of two apoptotic genes (caspase-7 and -9). The damage to sperm and ovary cells was greater in Rc adults than in Sm adults and was temperature sensitive. The lower fitness of the resistant strain, compared with the susceptible strain, is probably due to higher levels of oxidative stress and apoptosis, which also have deleterious effects on several life history traits. The greater injury observed in conditions of heat stress may be due to both the stronger upregulation of caspase genes and weaker upregulation of hsp genes in resistant than in susceptible individuals.
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Affiliation(s)
- L J Zhang
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education),Fujian Agriculture and Forestry University,Fuzhou 350002,China
| | - J L Chen
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education),Fujian Agriculture and Forestry University,Fuzhou 350002,China
| | - B L Yang
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education),Fujian Agriculture and Forestry University,Fuzhou 350002,China
| | - X G Kong
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education),Fujian Agriculture and Forestry University,Fuzhou 350002,China
| | - D Bourguet
- Inra, UMR CBGP (Centre de Biologie pour la Gestion des Populations),Montferrier-sur-Lez,France
| | - G Wu
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education),Fujian Agriculture and Forestry University,Fuzhou 350002,China
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Newman CE, Toxopeus J, Udaka H, Ahn S, Martynowicz DM, Graether SP, Sinclair BJ, Percival-Smith A. CRISPR-induced null alleles show that Frost protects Drosophila melanogaster reproduction after cold exposure. J Exp Biol 2017; 220:3344-3354. [DOI: 10.1242/jeb.160176] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 07/09/2017] [Indexed: 12/20/2022]
Abstract
The ability to survive and reproduce after cold exposure is important in all kingdoms of life. However, even in a sophisticated genetic model system like Drosophila melanogaster, few genes have been identified as functioning in cold tolerance. The accumulation of the Frost (Fst) gene transcript increases after cold exposure, making it a good candidate for a gene that has a role in cold tolerance. However, despite extensive RNAi knockdown analysis, no role in cold tolerance has been assigned to Fst. CRISPR is an effective technique for completely knocking down genes, and less likely to produce off-target effects than GAL4-UAS RNAi systems. We have used CRISPR-mediated homologous recombination to generate Fst null alleles, and these Fst alleles uncovered a requirement for FST protein in maintaining female fecundity following cold exposure. However, FST does not have a direct role in survival following cold exposure. FST mRNA accumulates in the Malpighian tubules, and the FST protein is a highly disordered protein with a putative signal peptide for export from the cell. Future work is needed to determine whether FST is exported from the Malpighian tubules and directly interacts with female reproductive tissues post-cold exposure, or if it is required for other repair/recovery functions that indirectly alter energy allocation to reproduction.
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Affiliation(s)
- Claire E. Newman
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Jantina Toxopeus
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Hiroko Udaka
- Department of Biology, University of Western Ontario, London, ON, Canada
- Present Address: Department of Zoology, Kyoto University, Kyoto, Japan
| | - Soohyun Ahn
- Department of Biology, University of Western Ontario, London, ON, Canada
- Present Address: Melbourne Dental School, University of Melbourne, Melbourne, VIC, Australia
| | - David M. Martynowicz
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Steffen P. Graether
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Brent J. Sinclair
- Department of Biology, University of Western Ontario, London, ON, Canada
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15
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Lu K, Chen X, Liu W, Zhou Q. Characterization of heat shock cognate protein 70 gene and its differential expression in response to thermal stress between two wing morphs of Nilaparvata lugens (Stål). Comp Biochem Physiol A Mol Integr Physiol 2016; 199:47-53. [DOI: 10.1016/j.cbpa.2016.05.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 05/06/2016] [Accepted: 05/10/2016] [Indexed: 12/18/2022]
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16
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Identification of a heat shock protein 90 gene involved in resistance to temperature stress in two wing-morphs of Nilaparvata lugens (Stål). Comp Biochem Physiol A Mol Integr Physiol 2016; 197:1-8. [DOI: 10.1016/j.cbpa.2016.02.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 02/24/2016] [Accepted: 02/29/2016] [Indexed: 11/18/2022]
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17
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MacMillan HA, Knee JM, Dennis AB, Udaka H, Marshall KE, Merritt TJS, Sinclair BJ. Cold acclimation wholly reorganizes the Drosophila melanogaster transcriptome and metabolome. Sci Rep 2016; 6:28999. [PMID: 27357258 PMCID: PMC4928047 DOI: 10.1038/srep28999] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 06/07/2016] [Indexed: 01/05/2023] Open
Abstract
Cold tolerance is a key determinant of insect distribution and abundance, and thermal acclimation can strongly influence organismal stress tolerance phenotypes, particularly in small ectotherms like Drosophila. However, there is limited understanding of the molecular and biochemical mechanisms that confer such impressive plasticity. Here, we use high-throughput mRNA sequencing (RNA-seq) and liquid chromatography – mass spectrometry (LC-MS) to compare the transcriptomes and metabolomes of D. melanogaster acclimated as adults to warm (rearing) (21.5 °C) or cold conditions (6 °C). Cold acclimation improved cold tolerance and led to extensive biological reorganization: almost one third of the transcriptome and nearly half of the metabolome were differentially regulated. There was overlap in the metabolic pathways identified via transcriptomics and metabolomics, with proline and glutathione metabolism being the most strongly-supported metabolic pathways associated with increased cold tolerance. We discuss several new targets in the study of insect cold tolerance (e.g. dopamine signaling and Na+-driven transport), but many previously identified candidate genes and pathways (e.g. heat shock proteins, Ca2+ signaling, and ROS detoxification) were also identified in the present study, and our results are thus consistent with and extend the current understanding of the mechanisms of insect chilling tolerance.
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Affiliation(s)
- Heath A MacMillan
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Jose M Knee
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, ON, Canada
| | - Alice B Dennis
- Landcare Research, Auckland, New Zealand.,Allan Wilson Centre for Molecular Ecology and Evolution, Auckland, New Zealand
| | - Hiroko Udaka
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Katie E Marshall
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Thomas J S Merritt
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, ON, Canada
| | - Brent J Sinclair
- Department of Biology, University of Western Ontario, London, ON, Canada
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18
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Condon C, Acharya A, Adrian GJ, Hurliman AM, Malekooti D, Nguyen P, Zelic MH, Angilletta MJ. Indirect selection of thermal tolerance during experimental evolution of Drosophila melanogaster. Ecol Evol 2015; 5:1873-80. [PMID: 26140203 PMCID: PMC4485968 DOI: 10.1002/ece3.1472] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 02/19/2015] [Accepted: 02/24/2015] [Indexed: 11/10/2022] Open
Abstract
Natural selection alters the distribution of a trait in a population and indirectly alters the distribution of genetically correlated traits. Long-standing models of thermal adaptation assume that trade-offs exist between fitness at different temperatures; however, experimental evolution often fails to reveal such trade-offs. Here, we show that adaptation to benign temperatures in experimental populations of Drosophila melanogaster resulted in correlated responses at the boundaries of the thermal niche. Specifically, adaptation to fluctuating temperatures (16-25°C) decreased tolerance of extreme heat. Surprisingly, flies adapted to a constant temperature of 25°C had greater cold tolerance than did flies adapted to other thermal conditions, including a constant temperature of 16°C. As our populations were never exposed to extreme temperatures during selection, divergence of thermal tolerance likely reflects indirect selection of standing genetic variation via linkage or pleiotropy. We found no relationship between heat and cold tolerances in these populations. Our results show that the thermal niche evolves by direct and indirect selection, in ways that are more complicated than assumed by theoretical models.
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Affiliation(s)
- Catriona Condon
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
| | - Ajjya Acharya
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
| | - Gregory J Adrian
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
| | - Alex M Hurliman
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
| | - David Malekooti
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
| | - Phivu Nguyen
- School of Life Sciences, Arizona State University Tempe, AZ, 85287
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19
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Pujol-Lereis LM, Rabossi A, Quesada-Allué LA. Analysis of survival, gene expression and behavior following chill-coma in the medfly Ceratitis capitata: effects of population heterogeneity and age. JOURNAL OF INSECT PHYSIOLOGY 2014; 71:156-163. [PMID: 25449902 DOI: 10.1016/j.jinsphys.2014.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 10/02/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
The medfly Ceratitis capitata is an agricultural pest distributed worldwide thanks, in part, to its phenotypic plasticity of thermal tolerance. Cold exposure has been shown to reduce C. capitata survival, which may affect its distribution in areas with subfreezing temperatures. When insects are increasingly cooled, they attain a critical thermal threshold and enter a chill-coma state characterized by cessation of movement. It is not clear how a rapid cold exposure affects the physiological state of medflies, and how this is influenced by age and population heterogeneity. In order to approach these questions, C. capitata single-sex laboratory populations of 15 and 30 days old were subjected to a chill-coma recovery assay, and separated according to their recovery time in three subgroups: Fast-Subgroups, Intermediate-Subgroups, and Slow-Subgroups. Thereafter, we analyzed their survival, behavioral, and gene expression outputs. In female and old male populations, we found that flies with the slowest recovery time had a reduced life expectancy, a higher initial mortality rate, and a worse climbing performance compared with flies that recovered faster. Therefore, we were able to separate subgroups that developed chilling-injury from subgroups that had a reversible full recovery after cold exposure. The gene expression analysis of the heat shock protein genes hsp70 and hsp83 showed no clear association with the parameters studied. Interestingly, thorax expression levels of the Cu/Zn superoxide dismutase gene were elevated during the recovery phase in the Fast-Subgroups, but remained constant in the Slow-Subgroups that developed chilling-injury. On the other hand, none of the young male subgroups seemed to have suffered irreversible damage. Thus, we concluded that depending on age and population heterogeneity, chill-coma recovery time points out significant differences on individual cold tolerance. Moreover, the inability to properly induce the antioxidant defense system to counteract the oxidative damage caused by cold seems to contribute to the development of chilling-injury.
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Affiliation(s)
- Luciana Mercedes Pujol-Lereis
- Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA), CONICET, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Fundación Instituto Leloir, Buenos Aires, Argentina.
| | - Alejandro Rabossi
- Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA), CONICET, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Fundación Instituto Leloir, Buenos Aires, Argentina.
| | - Luis Alberto Quesada-Allué
- Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA), CONICET, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Fundación Instituto Leloir, Buenos Aires, Argentina.
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20
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Udaka H, Percival-Smith A, Sinclair BJ. Increased abundance of frost mRNA during recovery from cold stress is not essential for cold tolerance in adult Drosophila melanogaster. INSECT MOLECULAR BIOLOGY 2013; 22:541-550. [PMID: 23901849 DOI: 10.1111/imb.12044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Frost (Fst) is a candidate gene associated with the response to cold in Drosophila melanogaster because Fst mRNA accumulation increases during recovery from low temperature exposure. We investigated the contribution of Fst expression to chill-coma recovery time, acute cold tolerance and rapid cold hardening (RCH) in adult D. melanogaster by knocking down Fst mRNA expression using GAL4/UAS-mediated RNA interference. In this experiment, four UAS-Fst and one tubulin-GAL4 lines were used. We predicted that if Fst is essential for cold tolerance phenotypes, flies with low Fst mRNA levels should be less cold tolerant than flies with normal levels of cold-induced Fst mRNA. Cold-induced Fst abundance and recovery time from chill-coma were not negatively correlated in male or female flies. Survival of 2 h exposures to sub-zero temperatures in Fst knockdown lines was not lower than that in a control line. Moreover, a low temperature pretreatment increased survival of severe cold exposure in flies regardless of Fst abundance level during recovery from cold stress, suggesting that Fst expression is not essential for RCH. Thus, cold-induced Fst accumulation is not essential for cold tolerance measured as chill-coma recovery time, survival to acute cold stress and RCH response in adult D. melanogaster.
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Affiliation(s)
- H Udaka
- Department of Biology, The University of Western Ontario, London, ON, Canada.
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21
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22
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Armstrong GAB, Rodríguez EC, Meldrum Robertson R. Cold hardening modulates K+ homeostasis in the brain of Drosophila melanogaster during chill coma. JOURNAL OF INSECT PHYSIOLOGY 2012; 58:1511-1516. [PMID: 23017334 DOI: 10.1016/j.jinsphys.2012.09.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 09/10/2012] [Accepted: 09/11/2012] [Indexed: 06/01/2023]
Abstract
Environmental temperature is one of the most important abiotic factors affecting insect behaviour; virtually all physiological processes, including those which regulate nervous system function, are affected. At both low and high temperature extremes insects enter a coma during which individuals do not display behaviour and are unresponsive to stimulation. We investigated neurophysiological correlates of chill and hyperthermic coma in Drosophila melanogaster. Coma resulting from anoxia causes a profound loss of K(+) homeostasis characterized by a surge in extracellular K(+) concentration ([K(+)](o)) in the brain. We recorded [K(+)](o) in the brain during exposure to both low and high temperatures and observed a similar surge in [K(+)](o) which recovered to baseline concentrations following return to room temperature. We also found that rapid cold hardening (RCH) using a cold pretreatment (4°C for 2h; 2h recovery at room temperature) increased the peak brain [K(+)](o) reached during a subsequent chill coma and increased the rates of accumulation and clearance of [K(+)](o). We conclude that RCH preserves K(+) homeostasis in the fly brain during exposure to cold by reducing the temperature sensitivity of the rates of homeostatic processes.
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Affiliation(s)
- Gary A B Armstrong
- Department of Biology, Queen's University, Kingston, ON, Canada K7L 3N6.
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23
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Linderman JA, Chambers MC, Gupta AS, Schneider DS. Infection-related declines in chill coma recovery and negative geotaxis in Drosophila melanogaster. PLoS One 2012; 7:e41907. [PMID: 23028430 PMCID: PMC3441536 DOI: 10.1371/journal.pone.0041907] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 06/29/2012] [Indexed: 01/25/2023] Open
Abstract
Studies of infection in Drosophila melanogaster provide insight into both mechanisms of host resistance and tolerance of pathogens. However, research into the pathways involved in these processes has been limited by the relatively few metrics that can be used to measure sickness and health throughout the course of infection. Here we report measurements of infection-related declines in flies' performance on two different behavioral assays. D. melanogaster are slower to recover from a chill-induced coma during infection with either Listeria monocytogenes or Streptococcus pneumoniae. L. monocytogenes infection also impacts flies' performance during a negative geotaxis assay, revealing a decline in their rate of climbing as part of their innate escape response after startle. In addition to providing new measures for assessing health, these assays also suggest pathological consequences of and metabolic shifts that may occur over the course of an infection.
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Affiliation(s)
- Jessica A. Linderman
- Department of Microbiology and Immunology, Stanford University, Stanford, California, United States of America
| | - Moria C. Chambers
- Department of Microbiology and Immunology, Stanford University, Stanford, California, United States of America
| | - Avni S. Gupta
- Department of Microbiology and Immunology, Stanford University, Stanford, California, United States of America
| | - David S. Schneider
- Department of Microbiology and Immunology, Stanford University, Stanford, California, United States of America
- * E-mail:
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Dierks A, Kölzow N, Franke K, Fischer K. Does selection on increased cold tolerance in the adult stage confer resistance throughout development? J Evol Biol 2012; 25:1650-7. [PMID: 22686583 DOI: 10.1111/j.1420-9101.2012.02547.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Artificial selection is a powerful approach to unravel constraints on genetic adaptation. Although it has been frequently used to reveal genetic trade-offs among different fitness-related traits, only a few studies have targeted genetic correlations across developmental stages. Here, we test whether selection on increased cold tolerance in the adult stage increases cold resistance throughout ontogeny in the butterfly Bicyclus anynana. We used lines selected for decreased chill-coma recovery time and corresponding controls, which had originally been set up from three levels of inbreeding (outbred control, one or two full-sib matings). Four generations after having terminated selection, a response to selection was found in 1-day-old butterflies (the age at which selection took place). Older adults showed a very similar although weaker response. Nevertheless, cold resistance did not increase in either egg, larval or pupal stage in the selection lines but was even lower compared to control lines for eggs and young larvae. These findings suggest a cost of increased adult cold tolerance, presumably reducing resource availability for offspring provisioning and thereby stress tolerance during development, which may substantially affect evolutionary trajectories.
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Affiliation(s)
- A Dierks
- Zoological Institute and Museum, University of Greifswald, Johann-Sebastian-Bach-Strasse 11 ⁄ 12, Greifswald, Germany.
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Affiliation(s)
- Anneke Dierks
- Zoological Institute and Museum, University of Greifswald, J.-S.-Bachstraße 11/12, D-17489 Greifswald, Germany.
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Storey KB, Storey JM. Insect cold hardiness: metabolic, gene, and protein adaptation1This review is part of a virtual symposium on recent advances in understanding a variety of complex regulatory processes in insect physiology and endocrinology, including development, metabolism, cold hardiness, food intake and digestion, and diuresis, through the use of omics technologies in the postgenomic era. CAN J ZOOL 2012. [DOI: 10.1139/z2012-011] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Winter survival for thousands of species of insects relies on adaptive strategies for cold hardiness. Two basic mechanisms are widely used (freeze avoidance by deep supercooling and freeze tolerance where insects endure ice formation in extracellular fluid spaces), whereas additional strategies (cryoprotective dehydration, vitrification) are also used by some polar species in extreme environments. This review assesses recent research on the biochemical adaptations that support insect cold hardiness. We examine new information about the regulation of cryoprotectant biosynthesis, mechanisms of metabolic rate depression, role of aquaporins in water and glycerol movement, and cell preservation strategies (chaperones, antioxidant defenses and metal binding proteins, mitochondrial suppression) for survival over the winter. We also review the new information coming from the use of genomic and proteomic screening methods that are greatly widening the scope for discovery of genes and proteins that support winter survival.
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Affiliation(s)
- Kenneth B. Storey
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Janet M. Storey
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
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27
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Neelakanta G, Hudson AM, Sultana H, Cooley L, Fikrig E. Expression of Ixodes scapularis antifreeze glycoprotein enhances cold tolerance in Drosophila melanogaster. PLoS One 2012; 7:e33447. [PMID: 22428051 PMCID: PMC3302814 DOI: 10.1371/journal.pone.0033447] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 02/09/2012] [Indexed: 11/23/2022] Open
Abstract
Drosophila melanogaster experience cold shock injury and die when exposed to low non-freezing temperatures. In this study, we generated transgenic D. melanogaster that express putative Ixodes scapularis antifreeze glycoprotein (IAFGP) and show that the presence of IAFGP increases the ability of flies to survive in the cold. Male and female adult iafgp-expressing D. melanogaster exhibited higher survival rates compared with controls when placed at non-freezing temperatures. Increased hatching rates were evident in embryos expressing IAFGP when exposed to the cold. The TUNEL assay showed that flight muscles from iafgp-expressing female adult flies exhibited less apoptotic damage upon exposure to non-freezing temperatures in comparison to control flies. Collectively, these data suggest that expression of iafgp increases cold tolerance in flies by preventing apoptosis. This study defines a molecular basis for the role of an antifreeze protein in cryoprotection of flies.
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Affiliation(s)
- Girish Neelakanta
- Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Andrew M. Hudson
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Hameeda Sultana
- Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Lynn Cooley
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, United States of America
- Department of Cell Biology, Yale University School of Medicine, New Haven, Connecticut, United States of America
- Department of Molecular, Cellular, and Developmental Biology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Erol Fikrig
- Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, United States of America
- Howard Hughes Medical Institute, Chevy Chase, Maryland, United States of America
- * E-mail:
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28
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Colinet H, Sciaussat D, Bozzolan F, Bowler K. Rapid decline of cold tolerance at young age is associated with expression of stress genes in Drosophila melanogaster. J Exp Biol 2012; 216:253-9. [DOI: 10.1242/jeb.076216] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Summary
Many endogenous factors influence thermal tolerance of insects. Among these, age contributes an important source of variation. Heat tolerance is typically high in newly-enclosed insects, before declining dramatically. It is not known whether this phenomenon relates to cold tolerance also. In addition, the underlying mechanisms of this variation are unresolved. In this study we tested whether cold tolerance declines in Drosophila melanogaster females aged from 0 to 5 days. We also assessed whether expression (basal and induced) of eight stress genes (hsp22, hsp23, hsp40, hsp68, hsp70Aa, hsp83, Starvin and Frost) varied post-eclosion in correspondence with changes found cold tolerance. We report that cold tolerance was very high at eclosion and then it rapidly declined in young flies. hsp23 and hsp68 showed a dramatic age-related variation of basal expression that was associated with cold tolerance proxies. Significant age-related plasticity of cold-induced expression was also found for hsp22, hsp23, hsp68, hsp70Aa, Frost and Starvin. hsp22 and hsp70Aa induced expression was high in newly-enclosed phenotypes before declining dramatically, whilst opposite age-related patterns were found for hsp23, hsp68, Starvin and Frost. This study shows a marked within-stage variation in cold tolerance. The involvement of the stress genes in setting basal thermal tolerance is discussed.
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Affiliation(s)
- Hervé Colinet
- Université Catholique de Louvain, Belgium; Université de Rennes, France
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