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09 23, 2021;4 (1): 1121.

In addition to cryptochrome 2, magnetic particles with olfactory co-receptor are important for magnetic orientation in termites.

Yongyong Gao, Ping Wen, Ring T Cardé, Huan Xu, Qiuying Huang
Author Information
  1. Yongyong Gao: Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
  2. Ping Wen: CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan Province, 650223, China.
  3. Ring T Cardé: Department of Entomology, University of California Riverside, Riverside, CA, 92521, USA.
  4. Huan Xu: Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
  5. Qiuying Huang: Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China. qyhuang2006@mail.hzau.edu.cn. ORCID
PMID: 34556782 DOI: 10.1038/s42003-021-02661-6

Abstract

The volatile trail pheromone is an ephemeral chemical cue, whereas the geomagnetic field (GMF) provides a stable positional reference. However, it is unclear whether and how the cryptic termites perceive the GMF for orientation in light or darkness until now. Here, we found that the two termite species, Reticulitermes chinensis and Odontotermes formosanus, use the GMF for orientation. Our silencing cryptochrome 2 (Cry2) impaired magnetic orientation in white light but had no significant impact in complete darkness, suggesting that Cry2 can mediate magnetic orientation in termites only under light. Coincidentally, the presence of magnetic particles enabled the magnetic orientation of termites in darkness. When knock-downing the olfactory co-receptor (Orco) to exclude the effect of trail pheromone, unexpectedly, we found that the Orco participated in termite magnetic orientation under both light and darkness. Our findings revealed a novel magnetoreception model depending on the joint action of radical pair, magnetic particle, and olfactory co-receptor.

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MeSH Term

Animals
Cryptochromes
Insect Proteins
Isoptera
Magnetic Fields
Orientation
Receptors, Odorant

Chemicals

Cryptochromes
Insect Proteins
Receptors, Odorant
Journal Article Research Support, Non-U.S. Gov't
Article has an altmetric score of 2

Word Cloud

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