Ge Si-Xun, Li Tian-Feng, Ren Li-Li, Zong Shi-Xiang
Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, P. R.China.
IFOPE, Sino-French Joint Laboratory for Invasive Forest Pests in Eurasia, Beijing Forestry University and INRAE URZF, Beijing 100083, P. R.China.
iScience. 2023 Apr 19;26(5):106680. doi: 10.1016/j.isci.2023.106680. eCollection 2023 May 19.
Adaptation to host plants is of great significance in the ecology of xylophagous insects. The specific adaptation to woody tissues is made possible through microbial symbionts. We investigated the potential roles of detoxification, lignocellulose degradation, and nutrient supplementation of and its gut symbionts in host plant adaptation using metatranscriptome. The gut microbial community structure of that fed on the two plant species were found to be different. Plant compound detoxification and lignocellulose degradation genes have been identified in both beetles and gut symbionts. Most differentially expressed genes associated with host plant adaptations were up-regulated in larvae fed on the less suitable host () compared to larvae fed on the suitable host (). Our findings indicated that and its gut microbes respond to plant secondary substances through systematic transcriptome responses, allowing them to adapt to unsuitable host plants.
对寄主植物的适应在食木昆虫的生态学中具有重要意义。通过微生物共生体，对木质组织的特定适应成为可能。我们使用宏转录组研究了[昆虫名称]及其肠道共生体在寄主植物适应过程中的解毒、木质纤维素降解和营养补充的潜在作用。发现以这两种植物为食的[昆虫名称]的肠道微生物群落结构有所不同。在甲虫和肠道共生体中均已鉴定出植物化合物解毒和木质纤维素降解基因。与寄主植物适应相关的大多数差异表达基因在取食不太适宜寄主（[寄主名称1]）的幼虫中比取食适宜寄主（[寄主名称2]）的幼虫上调。我们的研究结果表明，[昆虫名称]及其肠道微生物通过系统性转录组反应对植物次生物质做出响应，从而使其能够适应不适宜的寄主植物。
