水稻叶折中主要丝纤维蛋白基因成分 Fib-L 的鉴定和功能研究

IF 2.3 2区 农林科学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY
Jing Xie, Qiyao Mo, Lina Chen, Zhongyan Zhu, Xiao Liu, Guy Smagghe, Mao Ye, Shangwei Li
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引用次数: 0

摘要

稻纵卷叶螟 Cnaphalocrocis medinalis(鳞翅目:鳞翅目)是水稻农业中的一种主要迁飞害虫。这种害虫的特点是幼虫能够用蚕丝折叠稻叶,这种行为最终会在蛹期形成一个丝茧。纤维蛋白轻链(CmFib-L)基因对蚕丝的生产至关重要,但它在麦地那龙虱中的具体功能却一直难以捉摸。本研究对 CmFib-L 基因进行了全面分析,揭示了其完整的开放阅读框(ORF)和表达模式。值得注意的是,该基因在五龄幼虫和蚕丝腺中高度表达,而五龄幼虫和蚕丝腺是生产蚕丝的关键阶段。我们的实验证明,沉默 CmFib-L 基因会导致蛹重量减轻、蛹期延长和丝茧松散。此外,当 CmFib-L 的表达被下调时,幼虫的折叶和纺丝行为也会明显受损。这些发现不仅显示了纤维蛋白轻链在蚕丝生产中的重要性,还揭示了一个新的靶基因来调节和控制 C. medinalis 的行为和发育。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identification and functional study of Fib-L, a major silk fibroin gene component in rice leaf folders.

The rice leaf folder, Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), is a major migratory pest in rice agriculture. This pest is characterised by its larvae's ability to fold rice leaves using silk, a behaviour that culminates in the formation of a silken cocoon during the pupal stage. The fibroin light chain (CmFib-L) gene is crucial for silk production, yet its specific function in C. medinalis has reminded elusive. This study presents a comprehensive analysis of the CmFib-L gene, revealing its complete open reading frame (ORF) and expression patterns. Notably, the gene is highly expressed in the fifth-instar larvae and the silk gland, which are critical stages for silk production. Our experiments demonstrate that silencing the CmFib-L gene leads to a reduction in pupal weight, an extension of the pupal stage and a disorganised silk cocoon. Furthermore, the larval behaviour of leaf folding and spinning is significantly impaired when the expression of CmFib-L is downregulated. These findings not only show the importance of fibroin light chain in silk production but also reveal a new target gene to regulate and control the behaviour and development of C. medinalis.

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来源期刊
Insect Molecular Biology
Insect Molecular Biology 生物-昆虫学
CiteScore
4.80
自引率
3.80%
发文量
68
审稿时长
6-12 weeks
期刊介绍: Insect Molecular Biology has been dedicated to providing researchers with the opportunity to publish high quality original research on topics broadly related to insect molecular biology since 1992. IMB is particularly interested in publishing research in insect genomics/genes and proteomics/proteins. This includes research related to: • insect gene structure • control of gene expression • localisation and function/activity of proteins • interactions of proteins and ligands/substrates • effect of mutations on gene/protein function • evolution of insect genes/genomes, especially where principles relevant to insects in general are established • molecular population genetics where data are used to identify genes (or regions of genomes) involved in specific adaptations • gene mapping using molecular tools • molecular interactions of insects with microorganisms including Wolbachia, symbionts and viruses or other pathogens transmitted by insects Papers can include large data sets e.g.from micro-array or proteomic experiments or analyses of genome sequences done in silico (subject to the data being placed in the context of hypothesis testing).
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