Contribution of militarine and dactylorhin A to the plant growth-inhibitory activity of a weed-suppressing orchid, Bletilla striata

Emi Sakuno, Tsunashi Kamo, Tomoko Takemura, Hajime Sugie, Syuntaro Hiradate, Yoshiharu Fujii

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

The methanol extract of Bletilla striata, an ornamental orchid in eastern Asia, exhibited plant growth-inhibitory activity. It was purified by continuous chromatography, based on the inhibitory activity against the growth of lettuce seedlings, resulting in two glycosidic compounds, militarine and dactylorhin A. The EC50 values of militarine and dactylorhin A against the radicle elongation of the lettuce seedlings were 0.28 and 0.88-mmol-L-1, respectively. The amount of militarine and dactylorhin A in the methanol extract of the aerial part of B. striata was calculated to be 5.6 and 7.5-mg-g-1 fresh weight, respectively. The inhibitory activity of militarine and its content in the methanol extract revealed that the plant growth-inhibitory activity of the extract of B. striata was mainly related to militarine. The inhibitory activity of militarine against the growth of Italian ryegrass and timothy were of the same level as that of lettuce.

本文言語英語
ページ(範囲)202-207
ページ数6
ジャーナルWeed Biology and Management
10
3
DOI
出版ステータス出版済み - 9 2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • 農業および作物学

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