<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The Chinese white pine beetle (Dendroctonus armandi Tsai and Li) is the causal organism for the colossal death of the Chinese white pine (Pinus armandi Fr). We investigated the change of monoterpenes in the stem pholem and xylem in P. armandi saplings at 4 days, 8 days, and 30 days after treatment using treatment (MeJa + Tween-20 and Tween-20 as control) and untreated. GC-MS analysis found that the total monoterpene concentrations in the pholem and xylem in MeJa-treated saplings increased significantly compared with control or untreated saplings. Additionally, the proportions of β-pinene in the stem pholem, β-myrcene in the stem xylem, and limonene + β-phellandrene in both pholem and xylem of MeJa-treated saplings were increased significantly compared with control or untreated saplings. Based on our results, we suggest that by increasing the total concentration of monoterpene and the concentrations of β-myrcene, β-pinene and limonene + β-phellandrene maybe play an important defensive role against insect pests in P. armandi defense.</p></abstract>

The Chinese white pine beetle (Dendroctonus armandi Tsai and Li) is the causal organism for the colossal death of the Chinese white pine (Pinus armandi Fr). We investigated the change of monoterpenes in the stem pholem and xylem in P. armandi saplings at 4 days, 8 days, and 30 days after treatment using treatment (MeJa + Tween-20 and Tween-20 as control) and untreated. GC-MS analysis found that the total monoterpene concentrations in the pholem and xylem in MeJa-treated saplings increased significantly compared with control or untreated saplings. Additionally, the proportions of β-pinene in the stem pholem, β-myrcene in the stem xylem, and limonene + β-phellandrene in both pholem and xylem of MeJa-treated saplings were increased significantly compared with control or untreated saplings. Based on our results, we suggest that by increasing the total concentration of monoterpene and the concentrations of β-myrcene, β-pinene and limonene + β-phellandrene maybe play an important defensive role against insect pests in P. armandi defense.

Changes of monoterpenes in stem of Chinese white pine (Pinus armandi) saplings following treatment with Methyl Jasmonate

College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, P.R., China;

Hue University’s College of Education, Hue, 47000, Vietnam;

Forestry Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The Chinese white pine beetle (Dendroctonus armandi Tsai and Li) is the causal organism for the colossal death of the Chinese white pine (Pinus armandi Fr). We...

Changes of monoterpenes in stem of Chinese white pine (Pinus armandi) saplings following treatment with Methyl Jasmonate

Pubblicato online: 04 mar 2015

Pagine: 69 - 81

Ricevuto: 21 ott 2014

Accettato: 22 dic 2014

DOI: https://doi.org/10.2478/fsmu-2014-0006

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.