NDLI: Potential allelochemicals in root zone soils of Stellera chamaejasme L. and variations at different geographical growing sites

Content Provider	Springer Nature Link
Author	Guo, Hongru Cui, Haiyan Jin, Hui Yan, Zhiqiang Ding, Lan Qin, Bo
Copyright Year	2015
Abstract	Populations of Stellera chamaejasme L. have been increasing constantly in recent years in some areas of the grassland in north China but why this toxic weed has become highly competitive is not clear. In order to determine if any potential allelochemicals are released into the soil environment by S. chamaejasme, we investigated the chemical composition of a water-washed solution of the living roots with rhizosphere soil. This led to the isolation and identification of seven compounds: umbelliferone (1), daphnoretin (2), chamaechromone (3), 7-methoxyneochamaejasmine A (4), mesoneochamaejasmin A (5), neochamaejasmin B (6), dihydrodaphnodorin B (7). All are secondary metabolites of S. chamaejasme. Bioassay showed that 1, 5 and 6 had a strong inhibitory effect on Festuca rubra L. and Medicago sativa seedlings. These compounds were quantified by high performance liquid chromatography in 25 root zone soil samples of S. chamaejasme collected at altitudes between 165 and 4741 m from the northeast to the Tibetan Plateau of China. All samples contained at least one of the phytotoxic compounds. Their content did not correlate with the altitude of the growing site. However, the level of chamaechromone negatively correlated with the soil pH. Principle components analysis indicated that the flavonoids might come from the same source. These potential allelochemicals from root release into the soil might play an important role in the highly competitive nature and broad ecological adaptability of S. chamaejasme in the wild.
Starting Page	335
Ending Page	342
Page Count	8
File Format	PDF
ISSN	01676903
Journal	Plant Growth Regulation
Volume Number	77
Issue Number	3
e-ISSN	15735087
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-04-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flavonoid Phytotoxic Allelochemicals Stellera chamaejasme L. Variations Plant Sciences Plant Anatomy/Development Plant Physiology Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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