Back to Search
Start Over
Phytotoxicity of constituents of glandular trichomes and the leaf surface of camphorweed, Heterotheca subaxillaris.
- 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.
- Subjects :
- Agrostis drug effects
Asteraceae ultrastructure
Camphanes pharmacology
Flavones pharmacology
Herbicides chemistry
Herbicides pharmacology
Lactuca drug effects
Molecular Structure
Plant Leaves ultrastructure
Seedlings drug effects
Sesquiterpenes pharmacology
Structure-Activity Relationship
Asteraceae chemistry
Camphanes chemistry
Flavones chemistry
Plant Leaves chemistry
Sesquiterpenes chemistry
Subjects
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