Effective distance of volatile cues for plant-plant communication in beech.

Autor: Hagiwara T; Department of Agriculture Ryukoku University Otsu Japan.; Graduate School of Agriculture Kyoto University Kyoto Japan., Ishihara MI; Ashiu Forest Research Station Field Science Education and Research Center Kyoto University Kyoto Japan., Takabayashi J; Center for Ecological Research Kyoto University Otsu Japan., Hiura T; Department of Ecosystem Studies Graduate School of Agricultural and Life Sciences The University of Tokyo Tokyo Japan., Shiojiri K; Department of Agriculture Ryukoku University Otsu Japan.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2021 Aug 02; Vol. 11 (18), pp. 12445-12452. Date of Electronic Publication: 2021 Aug 02 (Print Publication: 2021).
DOI: 10.1002/ece3.7990
Abstrakt: In response to volatiles emitted from a plant infested by herbivorous arthropods, neighboring undamaged conspecific plants become better defended against herbivores; this is referred to as plant‒plant communication. Although plant‒plant communication occurs in a wide range of plant species, most studies have focused on herbaceous plants. Here, we investigated plant‒plant communication in beech trees in two experimental plantations in 2018 and one plantation in 2019. Approximately 20% of the leaves of a beech tree were clipped in half in the spring seasons of 2018 and 2019 (clipped tree). The damage levels to leaves in the surrounding undamaged beech trees were evaluated 90 days after the clipping (assay trees). In both years, the damage levels decreased with a reduction in the distance from the clipped tree. In 2019, we also recorded the damage levels of trees that were not exposed to volatiles (nonexposed trees) as control trees and found that those that were located <5 m away from clipped trees had significantly less leaf damage than nonexposed trees. By using a gas chromatograph-mass spectrometer, ten and eight volatile compounds were detected in the headspaces of clipped and unclipped leaves, respectively. Among them, the amount of ( Z )-3-hexenyl acetate in clipped leaves was significantly higher than that in nonclipped leaves. Our result suggests that green leaf volatiles such as ( Z )-3-hexenol and ( Z )-3-hexenyl acetate and other volatile organic compounds emitted from clipped trees induced defenses in the neighboring trees within the 5 m radius. The effective distances of plant‒plant communication in trees were discussed from the viewpoint of the arthropod community structure in forest ecosystems.
Competing Interests: The authors declare that there are no conflicts of interest.
(© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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