Lignin concentrations in phloem and outer bark are not associated with resistance to mountain pine beetle among high elevation pines.

A key component in understanding plant-insect interactions is the nature of host defenses.Research on defense traits among Pinus species has focused on specialized metabolites and axial resin ducts, but the role of lignin in defense within diverse systems is tropical hideaway beer unclear.We investigated lignin levels in the outer bark and phloem o

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