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Phytotoxicity of constituents of glandular trichomes and the leaf surface of camphorweed, Heterotheca subaxillaris.

Authors :
Morimoto M
Cantrell CL
Libous-Bailey L
Duke SO
Source :
Phytochemistry [Phytochemistry] 2009 Jan; Vol. 70 (1), pp. 69-74. Date of Electronic Publication: 2008 Dec 04.
Publication Year :
2009

Abstract

Camphorweed, Heterotheca subaxillaris (Lam.) Britt. & Rusby, has a camphor-like odor, and its leaf surfaces contain glandular trichomes of the type shown to contain high levels of isoprenoids in other species. Borneol (1), the phytotoxic calamenene-type sesquiterpenes (2-5, 9-11), and methylated flavones (12-15) were isolated from the dichloromethane rinsate of camphorweed aerial tissues. The strongest plant growth inhibitor against Agrostis stolonifera and Lactuca sativa seedlings, as well as duckweed (Lemna pausicostata), was 2-methoxy-calamenene-14-carboxylic acid (2). Esterification of calamenene carboxylic acids decreased their biological activity.

Details

Language :
English
ISSN :
0031-9422
Volume :
70
Issue :
1
Database :
MEDLINE
Journal :
Phytochemistry
Publication Type :
Academic Journal
Accession number :
19054533
Full Text :
https://doi.org/10.1016/j.phytochem.2008.09.026