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hspa5在花鲈高温胁迫下的表达及定位研究 |
Expression and Localization of HSPA5 in Response to Thermal Stress in the spotted sea bass (Lateolabrax maculatus) * |
投稿时间:2024-05-09 修订日期:2024-11-07 |
DOI: |
中文关键词: 花鲈 高温胁迫 热休克蛋白5 荧光定量PCR 原位杂交 |
英文关键词: Lateolabrax maculatus heat stress HSPA5 quantitative real-time PCR in situ hybridization |
基金项目:国家重点研发计划“海洋农业与淡水渔业科技创新”重点专项“重要水产养殖生物种质资源挖掘和创新利用”项目课题三“海水鱼种质资源体系化保存与创制”2022YFD2400103 |
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中文摘要: |
花鲈(Lateolabrax maculatus)作为我国重要的海产经济鱼类,在养殖过程中经常受到高温等不利因素的影响,严重制约花鲈养殖产业的发展。热休克蛋白5(HSPA5)作为关键的应激反应蛋白,在细胞热应激过程中发挥重要功能。为深入研究花鲈在高温胁迫下的分子响应机制,本研究首先克隆了花鲈hspa5基因,并聚焦于hspa5在花鲈肝脏组织中的表达及定位情况,以揭示其在响应高温胁迫中的功能机制。本研究采用实时定量PCR技术,分析了在30℃的高温条件下不同处理时间对花鲈肝脏中hspa5基因表达的影响。结果表明,随着处理时间的延长,hspa5基因的表达量逐渐上升,并在处理12h时达到最高水平,随后呈下降趋势,表明hspa5在花鲈肝脏组织应对长时间高温胁迫时具有显著的响应。为进一步明确hspa5在花鲈肝脏组织中的定位情况,本研究采用原位杂交技术,对hspa5 mRNA在肝脏细胞中的表达进行定位检测。结果显示,hspa5 mRNA在高温胁迫下花鲈肝脏组织的肝细胞胞质中呈现阳性信号,说明hspa5基因在肝脏响应高温胁迫过程中发挥了潜在作用。综上所述,本研究通过实时定量PCR、HE染色和原位杂交技术,揭示了hspa5基因在花鲈肝脏组织响应高温胁迫的表达模式。这些结果不仅有助于我们深入理解hspa5在花鲈响应高温胁迫时的功能机制,还为花鲈的养殖管理和耐高温性状选育提供了一定的理论依据。 |
英文摘要: |
The aquaculture industry, a cornerstone of global food security and economic development, is at a critical juncture due to the escalating challenges of global climate change. Among the various species cultivated, the spotted sea bass (Lateolabrax maculatus) stands out as a significant contributor to the marine economy. However, this species is increasingly vulnerable to the adverse effects of rising temperatures, which are directly linked to the global warming phenomenon. The thermal stress induced by high temperatures can precipitate a cascade of physiological responses in the spotted sea bass that are detrimental to its health and productivity. |
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