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Liu Z, Li C, Yang W, Wu Q, Xiao W, Zhu Y, Wei Q, Dong Z, Zhang G, Lu C, Pan M, Chen P. The Bombyx mori singed Gene Is Involved in the High-Temperature Resistance of Silkworms. INSECTS 2024; 15:264. [PMID: 38667394 PMCID: PMC11049829 DOI: 10.3390/insects15040264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
Temperature is an important factor in the growth, development, survival, and reproduction of organisms. The high-temperature resistance mechanism of insects may be significant for use in the prevention and control of insect pests. The silkworm, Bombyx mori, is an important Lepidoptera model species for studies on pest control in agriculture and forestry. We identified a gene in B. mori, the B. mori singed (Bmsn) gene, which is involved in the high-temperature resistance of silkworms. Sn proteins are highly conserved among species in many taxonomic groups. The overexpression of the Bmsn gene promoted the proliferation of silkworm cells, reduced oxidation, and reduced the accumulation of reactive oxygen species under stress. Interfering with the Bmsn gene had the opposite result. We constructed a transgenic B. mori strain that overexpressed the Bmsn gene. The physiological traits of the transgenic strain were significantly improved, and it had stronger high-temperature resistance. The Bmsn gene is involved in the process by which fat bodies respond to high-temperature stress. These findings provide insights into the mechanism of high-temperature resistance of insects and offer a new perspective on agricultural and forestry pest control.
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Affiliation(s)
- Zhenye Liu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Cong Li
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Wenyu Yang
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Qiao Wu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Wenfu Xiao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
- Sericultural Research Institute, Sichuan Academy of Agricultural Sciences, Nanchong 637000, China
| | - Yan Zhu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Qiongqiong Wei
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Zhanqi Dong
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Guizheng Zhang
- Guangxi Key Laboratory of Sericultural Genetic Improvement and Efficient Breeding, Sericulture Technology Promotion Station of Guangxi, Nanning 530007, China;
| | - Cheng Lu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Minhui Pan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
| | - Peng Chen
- State Key Laboratory of Resource Insects, Southwest University, Chongqing 400715, China; (Z.L.); (C.L.); (W.Y.); (Q.W.); (W.X.); (Y.Z.); (Q.W.); (Z.D.); (C.L.)
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Alghamdi AA, Alattal YZ. Alterations in Histone Methylation States Increased Profusion of Lethal(2)-Essential-for-Life-Like (l(2)elf), Trithorax and Polycomb Genes in Apis mellifera under Heat Stress. INSECTS 2024; 15:33. [PMID: 38249039 PMCID: PMC10816215 DOI: 10.3390/insects15010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024]
Abstract
Histone post-translational modifications (PTMs) represent a key mechanism in the thermal adaptation of the honeybee Apis mellifera. In this study, a chromatin immunoprecipitation assay and qPCR were employed to explore the changes in the methylation states of H3K4m2, H3K4m3, H3K27m2 and H3K27m3 associated with l2efl (ID: 72474, 724405, 724488), histone methyltransferases (HMTs) ((trx) and PR-set7) and Polycomb (Pc) and (Su(z)12) genes in A. m. jemenitica (tolerant subspecies) and A. m. carnica (susceptible subspecies) in response to heat treatment (42 °C for 1 h). The results revealed significant enrichment fold changes in the methylation/demethylation of most H3K4 and H3K27 marks at all targeted genes. These changes increased the profusion of l2efl (ID: 72474, 724405, 724488), histone methyltransferases (HMTs) (trx) and Polycomb (Pc) and Su(z)12 and decreased the profusion of HMT (PR-set7) in both honeybee subspecies. The changes in the methylation enrichment folds of histone methyltransferases (HMTs) ((trx), PR-set) and Polycomb (Pc), Su(z)12 genes demonstrate the well-harmonized coordination of epigenetic gene regulation in response to heat treatment. Compared to the control, the changes in the methylation enrichment folds of H3K4m3 at Polycomb Su(z)12 were about 30× and 100× higher in treated A. m. jemenitica and A.m. carnica, respectively. Similarly, changes in the methylation/demethylation enrichment folds of HMT (trx) and Polycomb (Pc) and Su(z)12 were 2-3× higher in A. m. carnica than in A. m. jemenitica after treatment (42 °C). It is evident that post-translational chromatin modification in both honeybee subspecies can diminish heat stress impact by (I) increasing the transcriptional provision of l2efl associated with survival and (II) increasing the silencing of genes associated with general cellular activities.
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Affiliation(s)
| | - Yehya Z. Alattal
- Department of Plant Protection, Chair of Engineer Abdullah Ahmad Bagshan for Bee Research, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia;
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