Phytotoxicity of constituents of glandular trichomes and the leaf surface of camphorweed, Heterotheca subaxillaris.
Phytochemistry
; 70(1): 69-74, 2009 Jan.
Article
em En
| MEDLINE
| ID: mdl-19054533
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sesquiterpenos
/
Canfanos
/
Folhas de Planta
/
Asteraceae
/
Flavonas
Idioma:
En
Revista:
Phytochemistry
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos