| 論文名 |
Derivatives of diterpen labdane-8α,15-diol as photosynthetic inhibitors in spinach chloroplasts and growth plant inhibitors. |
| 著者 |
F?lix Morales-Flores
Mar?a Isabel Aguilar
Beatriz King-D?az
Blas Lotina-Hennsen
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| キーワード |
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| 出版年月 |
1970年1月 |
| 発表先 |
J Photochem Photobiol B. 2013 Aug 5;125:42-50. |
| WEBサイト |
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| 論文概要（和文） |
ホウレンソウ葉緑体の光合成阻害剤および成長植物阻害剤としてのジテルペンラブダン-8α、15-ジオールの誘導体。 |
| 論文概要（英文） |
In a search of new efficient herbicides of natural origin, four derivatives were prepared from labdane-8α,15-diol (1) and 15-O-acetyl-8α-hydroxy labdane (2) isolated from Croton ciliatoglanduliferus. Their inhibitory activity on photosynthetic electron transport on fresh, broken spinach chloroplasts and on the growth of plants were determined. Derivative 15-O-benzoyl-8α-hydroxy labdane (5) was seven times more active than 2 as reaction Hill inhibitor. Complex of 5 with the adjuvant 2-hydroxypropyl-β-cyclodextrin (5:HPB) (200 μM) was sprayed on Physalys ixocarpa (green tomato) plants; 48 h later the complex inhibited PS II by transforming the active reaction centers to silent reaction centers or "heat sinks". After 72 h this effect disappeared, probably 5:HPB was metabolized by the plant. Chlorophyll a fluorescence of Trifolium alexandrinum (clover) leaves was affected with 5:HPB at the level of PQ pool reduction. 5:HPB decreases the tomato and clover dry-biomass, without affecting Lolium perenne (grass) plants, suggesting that complex 5 acts as selective herbicide for dicotyledonous plants. |
