Détail de la notice
Titre du Document
Plant growth inhibition by cis-cinnamoyl glucosides and cis-cinnamic acid
Auteur(s)
HIRADATE Syuntaro ; MORITA Sayaka ; FURUBAYASHI Akihiro ; ...
Résumé
Spiraea thunbergii Sieb. contains 1-O-cis-cinnamoyl-β-D-glucopyranose (CG) and 6-O-(4'-hydroxy-2'-methylene-butyroyl)-1-O-cis-cinnamoyl-β-D-glucopyranose (BCG) as major plant growth inhibiting constituents. In the present study, we determined the inhibitory activity of CG and BCG on root elongation of germinated seedlings of lettuce (Lactuca saliva), pigweed (Amaranthus retroflexus), red clover (Trifolium pratense), timothy (Phleum pratense), and bok choy (Brassica rapa var chinensis) in comparison with that of two well-known growth inhibitors, 2,4-dichlorophenoxyacetic acid (2,4-D) and (+)-2-cis-4-trans-abscisic acid (cis-ABA), as well as two related chemicals of CG and BCG, cis-cinnamic acid (cis-CA) and trans-cinnamic acid (trans-CA). The EC50 values for CG and BCG on lettuce were roughly one-half to one-quarter of the value for cis-ABA, cis-Cinnamic acid, which is a component of CG and BCG, possessed almost the same inhibitory activity of CG and BCG, suggesting that the essential chemical structure responsible for the inhibitory activity of CG and BCG is cis-CA. The cis-stereochemistry of the methylene moiety is apparently needed for high inhibitory activity, as trans-CA had an EC50 value roughly 100 times that ofCG, BCG, and cis-CA. Growth inhibition by CG, BCG, and cis-CA was influenced by the nature of the soil in the growing medium: alluvial soil preserved the bioactivity, whereas volcanic ash and calcareous soils inhibited bioactivity. These findings in
Editeur
Springer
Identifiant
PMID : 15898503 ISSN : 0098-0331 CODEN : JCECD8
Source
Journal of chemical ecology A. 2005, vol. 31, n° 3, pp. 591-601 [11 pages] [bibl. : 21 ref.]
Langue
Anglais
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