PDR 2011, 33(2) 209-213 DOI:   10.3724/SP.J.1143.2011.10168  ISSN: 2095-0845 CN: 53-1217/Q

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Allelopathic pathways
Eupatorium adenophorum
Invasive plant
LV Xia
LI Wen-Jun
SHI Yun-Thao
Article by Yang, M. Z.
Article by Lv, X.
Article by Zhang, T.
Article by Yang, C.
Article by Li, W. J.
Article by Shi, Y. T.
Article by Zhang, H. B.

Allelopathic Potential and Pathway of an Invasive Weed Eupatorium adenophorum (Asteraceae)

YANG  MIng-Zhi, LV  Xia, ZHANG  Ting, YANG  Chen, LI  Wen-Jun, SHI  Yun-Thao, ZHANG  Han-BO

School of Life Science, Yunnan University, Kunming 650091, China


Crofton weed (Eupatorium adenophorum) is one of the most notoriously invasive plants in China. Allelopathy has been considered to play an important role for population spread. In this study, we demonstrate that this weed has strong adverse effects on two agronomic cultivars, barley and maize, through a variety of allelopathic pathways including volatiles, leachates and root exudates. The allelopathic effect was even detected in early growth stages of the weed. However, there was no evidence to indicate that allelochemicals in dead leaf tissue either persisted or converted into new allelochemicals by naturally colonizing phyllosphere microbes.

Keywords Allelopathic pathways   Eupatorium adenophorum   Invasive plant  
Received 2010-10-08 Revised  Online: 2010-12-07 
DOI: 10.3724/SP.J.1143.2011.10168

The Department of Science and Technology of Yunnan Province, China (2007PY01-24) and The National Science Foundation of China (30560033, 30960077)

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