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- W2893280199 endingPage "646" @default.
- W2893280199 startingPage "633" @default.
- W2893280199 abstract "Abstract Conifers possess chemical and anatomical defences against tree‐killing bark beetles that feed in their phloem. Resins accumulating at attack sites can delay and entomb beetles while toxins reach lethal levels. Trees with high concentrations of metabolites active against bark beetle‐microbial complexes, and more extensive resin ducts, achieve greater survival. It is unknown if and how conifers integrate chemical and anatomical components of defence or how these capabilities vary with historical exposure. We compared linkages between phloem chemistry and tree ring anatomy of two mountain pine beetle hosts. Lodgepole pine, a mid‐elevation species, has had extensive, continual contact with this herbivore, whereas high‐elevation whitebark pines have historically had intermittent exposure that is increasing with warming climate. Lodgepole pine had more and larger resin ducts. In both species, anatomical defences were positively related to tree growth and nutrients. Within‐tree constitutive and induced concentrations of compounds bioactive against bark beetles and symbionts were largely unrelated to resin duct abundance and size. Fewer anatomical defences in the semi‐naïve compared with the continually exposed host concurs with directional differences in chemical defences. Partially uncoupling chemical and morphological antiherbivore traits may enable trees to confront beetles with more diverse defence permutations that interact to resist attack." @default.
- W2893280199 created "2018-10-05" @default.
- W2893280199 creator A5006027883 @default.
- W2893280199 creator A5010864165 @default.
- W2893280199 creator A5014160123 @default.
- W2893280199 creator A5029020693 @default.
- W2893280199 creator A5029209732 @default.
- W2893280199 creator A5030995520 @default.
- W2893280199 creator A5050805391 @default.
- W2893280199 creator A5082172994 @default.
- W2893280199 creator A5086546907 @default.
- W2893280199 date "2018-11-25" @default.
- W2893280199 modified "2023-10-18" @default.
- W2893280199 title "Anatomical defences against bark beetles relate to degree of historical exposure between species and are allocated independently of chemical defences within trees" @default.
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