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Research article - Peer-reviewed, 2021

Antennal transcriptome sequencing and identification of candidate chemoreceptor proteins from an invasive pest, the American palm weevil, Rhynchophorus palmarum

Gonzalez, Francisco; Johny, Jibin; Walker, William B., III; Guan, Qingtian; Mfarrej, Sara; Jakse, Jernej; Montagne, Nicolas; Jacquin-Joly, Emmanuelle; Alqarni, Abdulaziz A.; Al-Saleh, Mohammed Ali; Pain, Arnab; Antony, Binu


For decades, the American palm weevil (APW), Rhynchophorus palmarum, has been a threat to coconut and oil palm production in the Americas. It has recently spread towards North America, endangering ornamental palms, and the expanding date palm production. Its behavior presents several parallelisms with a closely related species, R. ferrugineus, the red palm weevil (RPW), which is the biggest threat to palms in Asia and Europe. For both species, semiochemicals have been used for management. However, their control is far from complete. We generated an adult antennal transcriptome from APW and annotated chemosensory related gene families to obtain a better understanding of these species' olfaction mechanism. We identified unigenes encoding 37 odorant-binding proteins (OBPs), ten chemosensory proteins (CSPs), four sensory neuron membrane proteins (SNMPs), seven gustatory receptors (GRs), 63 odorant receptors (ORs), and 28 ionotropic receptors (IRs). Noticeably, we find out the R. ferrugineus pheromone-binding protein and pheromone receptor orthologs from R. palmarum. Candidate genes identified and annotated in this study allow us to compare these palm weevils' chemosensory gene sets. Most importantly, this study provides the foundation for functional studies that could materialize as novel pest management strategies.

Published in

Scientific Reports
2021, volume: 11, number: 1, article number: 8334

Authors' information

Gonzalez, Francisco
King Saud University
Johny, Jibin
King Saud University
Walker, William
Swedish University of Agricultural Sciences, Department of Plant Protection Biology
Guan, Qingtian
King Abdullah University of Science and Technology
Mfarrej, Sara
King Abdullah University of Science and Technology
Jakse, Jernej
University of Ljubljana
Montagne, Nicolas
Universite Paris-Est-Creteil-Val-de-Marne (UPEC)
Jacquin-Joly, Emmanuelle
Universite Paris-Est-Creteil-Val-de-Marne (UPEC)
Alqarni, Abdulaziz A.
King Saud University
Al-Saleh, Mohammed Ali
King Saud University
Pain, Arnab
King Abdullah University of Science and Technology
Antony, Binu
King Saud University

UKÄ Subject classification

Agricultural Science

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