TY - JOUR TI - Simultaneous Transcriptomic Analysis of Both Host and Symbiont in Insect–Fungus Interactions AU - Laws, McKeon AU - Burns, Ellie S. AU - Kasson, Matthew T AU - Kijimoto, Teiya AU - Stajich, Jason E. VL - 16 IS - 13 PY - 2026 DA - 2026/07/05 SP - e5739 C1 - Bio-protocol 2026;16:e5739 DO - 10.21769/BioProtoc.5739 UR - https://doi.org/10.21769/BioProtoc.5739 AB - In the last two decades, the field of molecular entomology has seen a shift toward next-generation sequencing techniques as a means of uncovering genetic and developmental processes. However, the standardization of methods is not well-established, and studies for insect–fungus consortia lack established protocols for advanced molecular techniques and downstream analysis compared to approaches applied in model systems involving insect–bacteria interactions. To investigate insect–microbe interactions, RNA sequencing and analysis is often used to identify genes involved in the symbiosis. But such protocols do not often consider insect–fungus systems, which vary significantly in community member abundance and/or fail to describe the details of the process from collection to data processing. This paper will introduce a comprehensive approach for RNA sequencing using two non-model insect–fungus consortia, which lack established, published protocols seen in model systems: the ambrosia beetle mutualism and cicada Massospora parasitism. The protocol includes a detailed TRIzol RNA extraction and quantification, RNA sequencing, and data processing using Nextflow pipeline software. Validation of a range of symbiotic interactions from mutualistic to parasitic is considered to justify this procedure to be utilized in a range of insect–fungus interactions with varied abundances and host interactions. KW - Ambrosia beetle KW - Ambrosia Symbiosis KW - Euwallacea KW - Fusarium KW - Massospora KW - Cicada KW - RNA Extraction KW - RNA Seq KW - Nextflow JF - Bio-protocol SN - 2331-8325 PB - Bio-protocol LLC. BIO101 - False