Fungal associates of the tree-killing bark beetle, Ips typographus, vary in virulence, ability to degrade conifer phenolics and influence bark beetle tunning behavior

Zhao, Tao,1969-Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Department of Forest Mycology and Plant Pathology,Swedish University of Agricultural Sciences, Sweden,Ecological Chemistry (författare)

Funding Agencis:Deutsche Forschungsgemeinschaft HA7617/1 -1Research Council of Norway 221479/F20 Max Planck Society
The bark beetle Ips typographus carries numerous fungi that could be assisting the beetle in colonizing live Norway spruce (Picea abies) trees. Phenolic defenses in spruce phloem are degraded by the beetle's major tree-killing fungus Endoconidiophora polonica, but it is unknown if other beetle associates can also catabolize these compounds. We compared the ability of five fungi commonly associated with I. typographus to degrade phenolic compounds in Norway spruce phloem. Grosmannia penicillata and Grosmannia europhioides were able to degrade stilbenes and flavonoids faster than E. polonica and grow on minimal growth medium with spruce bark constituents as the only nutrients. Furthermore, beetles avoided medium amended with phenolics but marginally preferred medium colonized by fungi. Taken together our results show that different bark beetle-associated fungi have complementary roles in degrading host metabolites and thus might improve this insect's persistence in well defended host tissues.

Kandasamy, DineshkumarMax Planck Institute for Chemical Ecology, Jena, Germany (författare)
Krokene, PaalNorwegian Institute of Bioeconomy Research, Ås, Norway (författare)
Chen, JingyuanMax Planck Institute for Chemical Ecology, Jena, Germany (författare)
Gershenzon, JonathanMax Planck Institute for Chemical Ecology, Jena, Germany (författare)
Hammerbacher, AlmuthDepartment of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa (författare)
Sveriges lantbruksuniversitetDepartment of Forest Mycology and Plant Pathology (creator_code:org_t)
Sveriges lantbruksuniversitet

Av författaren/redakt...: Zhao, Tao, 1969-; Kandasamy, Dines ...; Krokene, Paal; Chen, Jingyuan; Gershenzon, Jona ...; Hammerbacher, Al ...

Om ämnet

Av lärosätet: Örebro universitet; Sveriges Lantbruksuniversitet; Linnéuniversitetet

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