2025-08-08 九州大学
本研究の概要図
<関連情報>
- https://www.kyushu-u.ac.jp/ja/researches/view/1313
- https://www.kyushu-u.ac.jp/f/62840/25_0808_02.pdf
- https://pubs.acs.org/doi/10.1021/acs.jafc.5c08261
Juglans mandshurica Maxim.の葉から分泌されるアレロケミカルとその植物におけるトランスクリプトーム効果 Allelochemical from Leaves of Juglans mandshurica Maxim. And Its Transcriptomic Effects in Plants
Poomraphie Nuntawong,Kosei Ando,Tomofumi Miyamoto,Keisuke Matsuura,Thi Huynh Anh Huynh,Varalee Yodsurang,Satoshi Morimoto,and Seiichi Sakamoto
Journal of Agricultural and Food Chemistry Published: July 23, 2025
DOI:https://doi.org/10.1021/acs.jafc.5c08261
Abstract
Weeds have a significant effect on agricultural productivity; thus, sustainable herbicide alternatives are necessary. Inspired by natural processes where bioactive compounds from fallen leaves inhibit nearby plant growth, this study is the first to isolate and identify 2Z-decaprenol as an allelochemical from Juglans mandshurica Maxim. Using a soil-based bioactivity model, bioassay-guided fractionation confirmed that n-hexane fraction plays an important role in suppressing Nicotiana tabacum Linn. seedling growth, with 2Z-decaprenol isolated as the active compound. Treatment with 2Z-decaprenol reduced plant weight, shoot length, and root length and induced root curling and detachment. Transcriptomic analysis of Arabidopsis thaliana seedlings treated with 2Z-decaprenol revealed extensive transcriptional reprogramming, with enrichment in secondary metabolite biosynthesis, cell wall modification, and asymmetric cell division pathways. Concurrently, pathways associated with protein processing in the endoplasmic reticulum and stress response mechanisms, including jasmonic acid signaling, were suppressed. These findings highlight the potential application of 2Z-decaprenol as an eco-friendly bioherbicide.
