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

被引:27
|
作者
Morimoto, Masanori [1 ,2 ]
Cantrell, Charles L. [2 ]
Libous-Bailey, Lynn [3 ]
Duke, Stephen O. [2 ]
机构
[1] Kinki Univ, Dept Appl Biol Chem, Grad Sch Agr, Nara 6318505, Japan
[2] USDA ARS, Prod Utilizat Res Unit, University, MS 38677 USA
[3] USDA ARS, So Weed Sci Res Unit, Stoneville, MS 38776 USA
关键词
Heterotheca subaxillaris; Asteraceae; Calamenene sesquiterpenes; Exudates; Phytotoxicity; STRUCTURAL REQUIREMENTS; RESINOUS EXUDATE; GROWTH; FLAVONOIDS; ACIDS; DERIVATIVES; INHIBITORS; HERBICIDES; PRODUCTS; CADINENE;
D O I
10.1016/j.phytochem.2008.09.026
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
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 (1215) were isolated from the dichloromethane rinsate of camphorweed aerial tissues. The strongest plant growth inhibitor against Agrostis stolonifera and Lactuca saliva seedlings, as well as duckweed (Lemna pausicostata), was 2-methoxy-calamenene-14-carboxylic acid (2). Esterification of calamenene carboxylic acids decreased their biological activity. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:69 / 74
页数:6
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