首页|锈赤扁谷盗响应低温胁迫的转录组分析

锈赤扁谷盗响应低温胁迫的转录组分析

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锈赤扁谷盗是世界范围内重要的储粮害虫之一,通过转录组测序分析,初步研究锈赤扁谷盗响应低温胁迫的分子机制。采用三代测序结合二代测序技术对锈赤扁谷盗进行转录组测序,共获得锈赤扁谷盗全长转录本10 508 个,并对其中 9 523 个转录本进行注释。相较于对照组,低温胁迫后有477个基因显著性差异表达,其中 177 个基因上调表达,300 个基因下调表达。进一步KEGG分析发现上述差异表达基因主要富集在代谢途径、脂肪酸生物合成和次生代谢产物的生物合成等通路。基于荧光定量PCR(RT-qPCR)技术对热激蛋白、脂肪酸合成酶、几丁质酶、海藻糖转运蛋白、细胞色素P450和卵黄蛋白原编码基因6 个差异表达基因进行表达量分析,结果表明RT-qPCR和转录组测序分析结果趋势一致。初步探究的储粮害虫锈赤扁谷盗适应低温胁迫的分子机制,为低温储粮技术在害虫综合治理策略中的应用奠定基础。
Transcriptome Analysis of Cryptolestes ferrugineus under Low-temperature Stress
Cryptolestes ferrugineus,a cosmopolitan stored-grain pest,was studied using transcriptome sequencing to investigate its molecular response to low-temperature stress..Combining PacBio Iso Sequencing and Illumina RNA Sequencing,10,508 full-length transcripts were obtained,with 9,523 successfully annotated.Compared to the control group,477 genes exhibited significant differential expressed under low-temperature stress,including 177 upregulated and 300 downregulated genes.KEGG analysis revealed that differentially expressed genes were primarily enriched in metabolic pathways,fatty acid biosynthesis,and secondary metabolite biosynthesis.RT-qPCR was used to analyze the expression levels of six differentially expressed genes:heat shock protein,fatty acid synthase,chitinase,trehalose transporter,cytochrome P450,and vitellogenin..The results demonstrated consistency between RT-qPCR and transcriptome sequencing analysis.This study offers preliminary insights into the molecular mechanisms of C.ferrugineus adaptation to low-temperature stress,forming a foundation for applying low-temperature grain storage technology in integrated pest management strategies.

Cryptolestes ferrugineustranscriptome analysislow temperature stressdifferentially expressed genesRT-qPCR

吴天意、伍祎、方智毅、张晓培、王富领、薛丁榕

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国家粮食和物资储备局科学研究院,粮食储运国家工程研究中心,北京 100037

福建省储备粮管理有限公司漳浦直属库,福建 漳州 363200

广西壮族自治区柳州粮食储备库有限公司,广西 柳州 545007

锈赤扁谷盗 转录组分析 低温胁迫 差异表达基因 荧光定量PCR

2025

粮油食品科技
国家粮食局科学研究院

粮油食品科技

北大核心
影响因子:0.684
ISSN:1007-7561
年,卷(期):2025.33(1)