The olfactory coreceptor IR8a governs larval feces-mediated competition avoidance in a hawkmoth
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F19%3A81179" target="_blank" >RIV/60460709:41320/19:81179 - isvavai.cz</a>
Result on the web
<a href="https://www.pnas.org/content/116/43/21828" target="_blank" >https://www.pnas.org/content/116/43/21828</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1073/pnas.1913485116" target="_blank" >10.1073/pnas.1913485116</a>
Alternative languages
Result language
angličtina
Original language name
The olfactory coreceptor IR8a governs larval feces-mediated competition avoidance in a hawkmoth
Original language description
Finding a suitable oviposition site is a challenging task for a gravid female moth. At the same time, it is of paramount importance considering the limited capability of most caterpillars to relocate to alternative host plants. The hawkmoth, Manduca sexta (Sphingidae), oviposits on solanaceous plants. Larvae hatching on a plant that is already attacked by conspecific caterpillars can face food competition, as well as an increased exposure to predators and induced plant defenses. Here, we show that feces from conspecific caterpillars are sufficient to deter a female M. sexta from ovipositing on a plant and that this deterrence is based on the feces-emitted carboxylic acids 3-methylpentanoic acid and hexanoic acid. Using a combination of genome editing (CRISPR-Cas9), electrophysiological recordings, calcium imaging, and behavioral analyses, we demonstrate that ionotropic receptor 8a (IR8a) is essential for acid-mediated feces avoidance in ovipositing hawkmoths
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10614 - Behavioral sciences biology
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Proceedings of the national Academy of Sciences of the United States of America
ISSN
0027-8424
e-ISSN
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Volume of the periodical
116
Issue of the periodical within the volume
43
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
21828-21833
UT code for WoS article
000491366700068
EID of the result in the Scopus database
2-s2.0-85073756313