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Ant-produced chemicals are not responsible for the specificity of their Ophiocordyceps fungal pathogens

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  • معلومة اضافية
    • Contributors:
      Kasetsart University Bangkok, Thailand (KU); Centre d’Ecologie Fonctionnelle et Evolutive (CEFE); Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD Occitanie )-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro); National Center for Genetic Engineering and Biotechnology Thailand (BIOTEC); National Science and Technology Development Agency Bangkok (NSTDA); This research was funded by an International Program for Scientific Cooperation (PICS n6453) of the National Center for Scientific Research (CNRS) to RB and NK, by the National Center for Genetic Engineering and Biotechnology (BIOTEC) (P-14-50799), Pathum Thani and by the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission (NRU): Kasetsart University-Thailand (092/2558).
    • بيانات النشر:
      HAL CCSD
      Elsevier
    • الموضوع:
      2018
    • Collection:
      Université de Montpellier: HAL
    • نبذة مختصرة :
      International audience ; In this study, we investigated the effects of exocrine glandular extracts (mandibular glands, post-pharygeal glands) and cuticular extracts of two species of formicine ant Polyrhachis furcata and Colobopsis saundersi on spore germination of two species of host-specific, entomopathogenic fungi Ophiocordyceps unilateralis (Ophiocordyceps polyrhachis-furcata and Ophiocordyceps camponoti-saundersi). Extracts from the two ant species inhibited the germination of O. polyrhachis-furcata, but did not affect the germination of O. camponoti-saundersi, invalidating the hypothesis of specificity mediated by exocrine glands. We also showed that metapleural gland extracts–well known for their anti-microbial activities–from ants not targeted by O. unilateralis, inhibited spore germination. Finally, we tested the effect of the glands of the two formicine ants on Beauveria bassiana, a widespread pathogen of insects. Germination of B. bassiana was stimulated by most extracts, suggesting that insect chemicals are used as signals for germination by this fungus. The chemical characterisation of ant glandular extracts was also performed.
    • الرقم المعرف:
      10.1016/j.funeco.2017.11.005
    • الدخول الالكتروني :
      https://hal.science/hal-02315941
      https://hal.science/hal-02315941v1/document
      https://hal.science/hal-02315941v1/file/Sakolrak_et_al_2018_ant-produced_chemicals.pdf
      https://doi.org/10.1016/j.funeco.2017.11.005
    • Rights:
      http://hal.archives-ouvertes.fr/licences/copyright/ ; info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.305976C4