A putative allelopathic agent of Russian knapweed occurs in invaded soils

被引：28

作者：

Alford, Elan R.

Perry, Laura G.

Qin, Bo

Vivanco, Jorge M.

Paschke, Mark W.

机构：

[1] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA

[2] Colorado State Univ, Dept Forest Rangeland & Watershed Stewarship, Ft Collins, CO 80523 USA

[3] Colorado State Univ, Dept Hort & Landscape Architecture, Ft Collins, CO 80523 USA

[4] Colorado State Univ, Ctr Rhizosphere Biol, Ft Collins, CO 80523 USA

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 2007年 / 39卷 / 07期

关键词：

Acroptilon repens; flavone; or-naphthoflavone; rhizotoxin; soil extraction;

D O I：

10.1016/j.soilbio.2007.01.020

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Allelopathy as a mechanism of invasion in plant communities remains a debated topic, partly due to lack of techniques to measure allelochemical output and stability in the field. Evidence has arisen to support allelopathic mechanisms in several invasive knapweeds, including Russian knapweed. Previous studies have shown that a phytotoxin, 7,8-benzoflavone, is produced by Russian knapweed roots under soil-free conditions. Here we describe a high performance liquid chromatography (HPLC) method to detect this compound in soil and we present the first observations of this compound from Russian knapweed infested soils. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1812 / 1815

页数：4

共 14 条

[1] Allelopathy and exotic plant invasion: From molecules and genes to species interactions [J].