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Adaptive traits of bark and ambrosia beetle-associated fungi
- Source :
- Fungal Ecology. 41:165-176
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- A phenotype is the expression of interactions between species genotype and environment. We quantified the contributions of ecological and phylogenetic associations to phenotypic variation in Geosmithia fungi. Geosmithia are symbiotic beetle-associated saprotrophs with a range of life histories and host specificities, including obligate nutritional beetle mutualists (ambrosia fungi) and phytopathogens. We hypothesized that: (1) species phenotypes are better explained by their ecology than by their phylogenetic relationships; (2) niche specialization was accompanied by enzymatic capability losses; and (3) ambrosia Geosmithia species have higher nutritional quality and antibiotic capabilities than species with facultative symbioses. Our results confirmed that long-term co-evolved specialists have reduced metabolic breadth in comparison to generalists. Phytopathogenic G. morbida produces unique enzyme suites with affinity to ligno-cellulose. Mycelia of ambrosia fungi contain large amounts of oleic fatty acid with nutritive and possibly allelopathic function. Overall, our results indicate that Geosmithia ecology have greater effect on species phenotype than their phylogenetic relationships.
- Subjects :
- 0106 biological sciences
Geosmithia
Ecology
Phylogenetic tree
Obligate
Host (biology)
Ecological Modeling
Ambrosia fungi
Plant Science
Biology
Ambrosia beetle
Generalist and specialist species
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Symbiosis
Botany
Ecology, Evolution, Behavior and Systematics
010606 plant biology & botany
Subjects
Details
- ISSN :
- 17545048
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Fungal Ecology
- Accession number :
- edsair.doi...........e165ca95d08015286caa3516e95ca678