The time-shift of antioxidants was investigated concerning the phloem of Norway spruce in response to bark beetles. The initial reaction resulted in lowered levels of thiols and ascorbate. A month later the antioxidant shift after moderate attack differed quantitatively from the reaction after massive attack. An intensification of antioxidant defense occurred within moderately-affected bark. Massive colonization caused a strong deterioration of thiols and phenolics until tree death. In contrast, the dynamic antioxidative response within moderately-affected trees indicated an acclimation stage.
COBISS.SI-ID: 2877740