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Title: Weeding volatiles reduce leaf and seed damage to field-grown soybeans and increase seed isoflavones
Authors: Shiojiri, Kaori
Ozawa, Rika
Yamashita, Ken-Ichi
Uefune, Masayoshi
Matsui, Kenji
Tsukamoto, Chigen
Tokumaru, Susumu
Takabayashi, Junji  kyouindb  KAKEN_id
Author's alias: 塩尻, かおり
小澤, 理香
山下, 賢一
上船, 雅義
松井, 健二
塚本, 知玄
徳丸, 晋
高林, 純示
Issue Date: 30-Jan-2017
Publisher: Springer Nature
Journal title: Scientific Reports
Volume: 7
Thesis number: 41508
Abstract: Field experiments were conducted over 3 years (2012, 2013, and 2015), in which half of the young stage soybean plants were exposed to volatiles from cut goldenrods three times over 2–3 weeks, while the other half remained unexposed. There was a significant reduction in the level of the total leaf damage on exposed soybean plants compared with unexposed ones. In 2015, the proportion of damage to plants by Spodoptera litura larvae, a dominant herbivore, was significantly less in the exposed field plots than in the unexposed plots. Under laboratory conditions, cut goldenrod volatiles induced the direct defenses of soybean plants against S. litura larvae and at least three major compounds, α-pinene, β-myrcene, and limonene, of cut goldenrod volatiles were involved in the induction. The number of undamaged seeds from the exposed plants was significantly higher than that from unexposed ones. Concentrations of isoflavones in the seeds were significantly higher in seeds from the exposed plants than in those from the unexposed plants. Future research evaluating the utility of weeding volatiles, as a form of plant–plant communications, in pest management programs is necessary.
Description: 草刈りの匂いで作物の防衛力を強化 --草刈り時の匂いを受容した大豆株では葉と豆の被害が減少し、豆中のイソフラボン量が増加する--. 京都大学プレスリリース. 2017-02-01.
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/217933
DOI(Published Version): 10.1038/srep41508
Related Link: http://www.kyoto-u.ac.jp/ja/research/research_results/2016/170130_2.html
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