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Microbial Interactions with Insect Hosts: Mechanisms, Evolution and Ecological Implications

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Microbiology".

Deadline for manuscript submissions: closed (30 September 2025) | Viewed by 1041

Special Issue Editor


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Guest Editor
College of Life Sciences, Nankai University, Tianjin 300071, China
Interests: entomology; evolutionary biology; zoology; insect adaptive evolution; the interaction and coevolution between animals and microorganisms

Special Issue Information

Dear Colleagues,

This Special Issue explores the intricate and dynamic relationships between microorganisms and their insect hosts, focusing on symbiotic mechanisms, evolutionary adaptations, and ecological consequences. Insects rely on microbial partners for critical functions such as nutrient acquisition, immune modulation, and behavioral regulation. Conversely, microbial symbionts often depend on host-specific niches for survival and transmission, with vertical (parent-to-offspring) and horizontal transfer mechanisms shaping these associations. Recent advances in multi-omics technologies, synthetic microbial consortia design, and co-culture systems have unveiled novel insights into host-microbe metabolic crosstalk, co-evolutionary trajectories, and the role of microbiota in insect adaptation to environmental stressors. Contributions may address microbe-mediated insect development, chemical signaling in mutualistic or pathogenic interactions, and applications in pest/vector control or sustainable agriculture.

Prof. Dr. Jin-Hua Xiao
Guest Editor

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Keywords

  • insect-microbe symbiosis
  • host-microbe coevolution
  • microbial-mediated behavior
  • insect adaptive evolution
  • cross-domain evolution

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Published Papers (1 paper)

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Review

24 pages, 1537 KB  
Review
The Microbiome as a Protagonist of Xylophagous Insects in Adaptation to Environmental Conditions and Climate Change
by Alexander Kuprin and Vladislava Baklanova
Int. J. Mol. Sci. 2025, 26(20), 10143; https://doi.org/10.3390/ijms262010143 - 18 Oct 2025
Viewed by 814
Abstract
Xylophagous insects represent a diverse group of species whose life cycles are trophically associated with wood at various stages of decomposition. In forest ecosystems, they play a pivotal role in wood degradation and biogeochemical nutrient cycling. Their remarkable adaptation to feeding on structurally [...] Read more.
Xylophagous insects represent a diverse group of species whose life cycles are trophically associated with wood at various stages of decomposition. In forest ecosystems, they play a pivotal role in wood degradation and biogeochemical nutrient cycling. Their remarkable adaptation to feeding on structurally complex and nutrient-poor woody substrates has been largely mediated by long-term symbiotic interactions with gut microbiota. This review synthesizes current knowledge on the molecular and ecological mechanisms underlying insect–microbiota interactions, with particular attention paid to the impact of environmental stressors—including elevated temperature, shifts in moisture regimes, and pollution—on microbial community structure and host adaptive responses. We critically evaluate the strength of evidence linking climate-driven microbiome shifts to functional consequences for the host and the ecosystem. The ecological implications of microbiota restructuring, such as impaired wood decomposition, decreased disease resistance, facilitation of xylophagous species spread, and alterations in key biotic interactions within forest biocenoses, are discussed. Particular emphasis is placed on the integration of multi-omics technologies and functional assays for a deeper, mechanistic understanding of microbiota roles. We also assess the potential and limitations of microbiome-based approaches for insect population management, with the overall goal of maintaining and enhancing the resilience of forest ecosystems under ongoing climate change. Full article
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