Coconut rhinoceros beetle digestive symbiosis with potential plant cell wall degrading microbes

Autor: Chiao-Jung Han, Chih-Hsin Cheng, Ting-Feng Yeh, Yannick Pauchet, Matan Shelomi
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Biofilms and Microbiomes, Vol 10, Iss 1, Pp 1-19 (2024)
Druh dokumentu: article
ISSN: 2055-5008
DOI: 10.1038/s41522-024-00505-9
Popis: Abstract Coconut rhinoceros beetle (CRB, Oryctes rhinoceros) is an invasive palm pest whose larvae eat wood, yet lack the necessary digestive enzymes. This study confirmed endogenous CRB cellulase is inactive, suggesting microbial fermentation. The inner lining of the CRB hindgut has tree-like structures covered with a conspicuous biofilm. To identify possible symbionts, 16 S rRNA amplicon sequencing was used on individuals from across Taiwan. Several taxa of Clostridia, an anaerobic class including many cellulolytic bacteria, were highly abundant in most individuals from all locations. Whole metagenome sequencing further confirmed many lignocellulose degrading enzymes are derived from these taxa. Analyses of eggs, larvae, adults, and soil found these cellulolytic microbes are not transmitted vertically or transstadially. The core microbiomes of the larval CRB are likely acquired and enriched from the environment with each molt, and enable efficient digestion of wood.
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