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Amstrup AB, Kovac H, Käfer H, Stabentheiner A, Sørensen JG. The heat shock response in Polistes spp. brood from differing climates following heat stress. JOURNAL OF INSECT PHYSIOLOGY 2024; 156:104667. [PMID: 38914156 DOI: 10.1016/j.jinsphys.2024.104667] [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: 01/10/2024] [Revised: 04/10/2024] [Accepted: 06/21/2024] [Indexed: 06/26/2024]
Abstract
Temperature is a crucial factor in many physiological processes, especially in small ectotherms whose body temperature is highly influenced by ambient temperature. Polistes (paper wasps) is a genus of primitively eusocial wasps found in widely varying thermal environments throughout the world. Paper wasps construct open-faced combs in which the brood is exposed to varying ambient temperatures. The Heat Shock Response is a physiological mechanism that has been shown to help cope with thermal stress. We investigated the expression of heat shock proteins in different life stages of three species of Polistes from different climates with the aim of deducing adaptive patterns. This was done by assaying heat shock protein (hsp70, hsp83, hsc70) expression during control conditions (25 °C) or a heat insult (35 or 45 °C) in individuals collected from natural populations in Alpine, Temperate, or Mediterranean climates. Basal expression of hsc70 and hsp83 was found to be high, while hsp70 and hsp83 expression was found to be highly responsive to severe heat stress. As expression levels varied based on species, geographical origin, and life stage as well as between heat shock proteins, the Heat Shock Response of Polistes was found to be complex. The results suggest that adaptive utilization of the heat shock response contributes to the ability of Polistes spp. to inhabit widely different thermal environments.
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Affiliation(s)
- A B Amstrup
- Institute of Biology, University of Graz, Graz, Austria; Department of Biology, Aarhus University, Aarhus, Denmark.
| | - H Kovac
- Institute of Biology, University of Graz, Graz, Austria.
| | - H Käfer
- Institute of Biology, University of Graz, Graz, Austria
| | | | - J G Sørensen
- Department of Biology, Aarhus University, Aarhus, Denmark
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Yang CL, Meng JY, Zhou JY, Zhang JS, Zhang CY. Integrated transcriptomic and proteomic analyses reveal the molecular mechanism underlying the thermotolerant response of Spodoptera frugiperda. Int J Biol Macromol 2024; 264:130578. [PMID: 38432264 DOI: 10.1016/j.ijbiomac.2024.130578] [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: 01/24/2024] [Revised: 02/29/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
Spodoptera frugiperda (Lepidoptera: Noctuidae) is a highly destructive invasive pest with remarkable adaptability to extreme climatic conditions, posing a substantial global threat. Although the effects of temperature stress on the biological and ecological properties of S. frugiperda have been elucidated, the molecular mechanisms underlying its responses remain unclear. Herein, we combined transcriptomic and proteomic analyses to explore the key genes and proteins involved in thermotolerance regulation in S. frugiperda larvae at 42 °C. Overall, 1528 differentially expressed genes (DEGs) and 154 differentially expressed proteins (DEPs) were identified in S. frugiperda larvae under heat stress, including antioxidant enzymes, heat shock proteins (Hsps), cytochrome P450s, starch and sucrose metabolism genes, and insulin signaling pathway genes, indicating their involvement in heat tolerance regulation. Correlation analysis of DEGs and DEPs revealed that seven and eight had the same and opposite expression profiles, respectively. After nanocarrier-mediated RNA interference knockdown of SfHsp29, SfHsp20.4, SfCAT, and SfGST, the body weight and mortality of S. frugiperda larvae significantly decreased and increased under heat stress, respectively. This indicates that SfHsp29, SfHsp20.4, SfCAT, and SfGST play a crucial role in the thermotolerance of S. frugiperda larvae. These results provide insight into the mechanism of heat tolerance in S. frugiperda.
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Affiliation(s)
- Chang-Li Yang
- Institute of Entomology, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guizhou University, Guiyang, Guizhou 550025, China
| | - Jian-Yu Meng
- Guizhou Tobacco Science Research Institute, Guiyang, Guizhou 550081, China
| | - Jian-Yun Zhou
- Guiyang Tobacco Company Kaiyang Branch, Guiyang, Guizhou 550300, China
| | - Jin-Shan Zhang
- Institute of Entomology, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guizhou University, Guiyang, Guizhou 550025, China
| | - Chang-Yu Zhang
- Institute of Entomology, Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Guizhou University, Guiyang, Guizhou 550025, China.
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Liang P, Guo M, Wang D, Li T, Li R, Li D, Cheng S, Zhen C, Zhang L. Molecular and functional characterization of heat-shock protein 70 in Aphis gossypii under thermal and xenobiotic stresses. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 199:105774. [PMID: 38458681 DOI: 10.1016/j.pestbp.2024.105774] [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: 05/30/2023] [Revised: 11/22/2023] [Accepted: 01/08/2024] [Indexed: 03/10/2024]
Abstract
Aphis gossypii, a globally distributed and economically significant pest of several crops, is known to infest a wide range of host plants. Heat shock proteins (Hsps), acting as molecular chaperones, are essential for the insect's environmental stress responses. The present study investigated the molecular characteristics and expression patterns of AgHsp70, a heat shock protein gene, in Aphis gossypii. Our phylogenetic analysis revealed that AgHsp70 shared high similarity with homologs from other insects, suggesting a conserved function across species. The developmental expression profiles of AgHsp70 in A. gossypii showed that the highest transcript levels were observed in the fourth instar nymphs, while the lowest levels were detected in the third instar nymphs. Heat stress and exposure to four different xenobiotics (2-tridecanone, tannic acid, gossypol, and flupyradifurone (4-[(2,2-difluoroethyl)amino]-2(5H)-furanone)) significantly up-regulated AgHsp70 expression. Knockdown of AgHsp70 using RNAi obviously increased the susceptibility of cotton aphids to 2-tridecanone, gossypol and flupyradifurone. Dual-luciferase reporter assays revealed that gossypol and flupyradifurone significantly enhanced the promoter activity of AgHsp70 at a concentration of 10 mg/L. Furthermore, we identified the transcription factor heat shock factor (HSF) as a regulator of AgHsp70, as silencing AgHSF reduced AgHsp70 expression. Our results shed light on the role of AgHsp70 in xenobiotic adaptation and thermo-tolerance.
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Affiliation(s)
- Pingzhuo Liang
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Mingyu Guo
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Dan Wang
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Ting Li
- Department of Biological Sciences, Alabama State University, Montgomery, AL 36104, United States
| | - Ren Li
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Dapeng Li
- The Museum of Chinese Gardens and Landscape Architecture, Beijing 100072, China
| | - Shenhang Cheng
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Congai Zhen
- Department of Entomology, China Agricultural University, Beijing 100193, China.
| | - Lei Zhang
- Department of Entomology, China Agricultural University, Beijing 100193, China.
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Zhang H, Sun F, Zhang W, Gao X, Du L, Yun X, Li Y, Li L, Pang B, Tan Y. Comparative Transcriptome Analysis of Galeruca daurica Reveals Cold Tolerance Mechanisms. Genes (Basel) 2023; 14:2177. [PMID: 38136998 PMCID: PMC10742598 DOI: 10.3390/genes14122177] [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: 10/23/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
Galeruca daurica (Joannis) is a pest species with serious outbreaks in the Inner Mongolian grasslands in recent years, and its larvae and eggs are extremely cold-tolerant. To gain a deeper understanding of the molecular mechanism of its cold-tolerant stress response, we performed de novo transcriptome assembly of G. daurica via RNA-Seq and compared the differentially expressed genes (DEGs) of first- and second-instar larvae grown and developed indoors and outdoors, respectively. The results show that cold tolerance in G. daurica is associated with changes in gene expression mainly involved in the glycolysis/gluconeogenesis pathway, the fatty acid biosynthesis pathway and the production of heat shock proteins (HSPs). Compared with the control group (indoor), the genes associated with gluconeogenesis, fatty acid biosynthesis and HSP production were up-regulated in the larvae grown and developed outdoors. While the changes in these genes were related to the physiological metabolism and growth of insects, it was hypothesized that the proteins encoded by these genes play an important role in cold tolerance in insects. In addition, we also investigated the expression of genes related to the metabolic pathway of HSPs, and the results show that the HSP-related genes were significantly up-regulated in the larvae of G. daurica grown and developed outdoors compared with the indoor control group. Finally, we chose to induce significant expression differences in the Hsp70 gene (Hsp70A1, Hsp70-2 and Hsp70-3) via RNAi to further illustrate the role of heat stress proteins in cold tolerance on G. daurica larvae. The results show that separate and mixed injections of dsHSP70A1, dsHsp70-2 and dsHsp70-3 significantly reduced expression levels of the target genes in G. daurica larvae. The super-cooling point (SCP) and the body fluid freezing point (FP) of the test larvae were determined after RNAi using the thermocouple method, and it was found that silencing the Hsp70 genes significantly increased the SCP and FP of G. daurica larvae, which validated the role of heat shock proteins in the cold resistance of G. daurica larvae. Our findings provide an important theoretical basis for further excavating the key genes and proteins in response to extremely cold environments and analyzing the molecular mechanism of cold adaptation in insects in harsh environments.
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Affiliation(s)
- Hongling Zhang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Feilong Sun
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Wenbing Zhang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Xia Gao
- Key Laboratory of Grassland Resources, Ministry of Education, Hohhot 010010, China;
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010020, China
| | - Lei Du
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China; (L.D.); (X.Y.)
| | - Xiaopeng Yun
- Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China; (L.D.); (X.Y.)
| | - Yanyan Li
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Ling Li
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Baoping Pang
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
| | - Yao Tan
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China; (H.Z.); (F.S.); (W.Z.); (Y.L.); (L.L.); (B.P.)
- Research Center for Grassland Entomology, Inner Mongolian Agricultural University, Hohhot 010019, China
- Key Laboratory of Grassland Resources, Ministry of Education, Hohhot 010010, China;
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