兰州大学机构库 >化学化工学院
Phytotoxic flavonoids from roots of Stellera chamaejasme L. (Thymelaeaceae)
Yan, ZQ; Guo, HR; Yang, JY; Liu, Q; Jin, H; Xu, R; Cui, HY; Qin, B; Qin, B (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China.
2014
Source PublicationPHYTOCHEMISTRY   Impact Factor & Quartile
ISSN0031-9422
Volume106Pages:61-68
AbstractAllelopathy, the negative effect on plants of chemicals released to the surroundings by a neighboring plant, is an important factor which contributes to the spread of some weeds in plant communities. In this field, Stellera chamaejasme L (Thymelaeaceae) is one of the most toxic and ecologically-threatening weeds in some of the grasslands of north and west China. Bioassay-guided fractionation of root extracts of this plant led to the isolation of eight flavonoids 1-8, whose structures were elucidated by spectroscopic analysis. All compounds obtained, except 7-methoxylneochaejasmin A (4) and (+)-epiafzelechin (5), showed strong phytotoxic activity against Arabidopsis thaliana seedlings. Seedling growth was reduced by neochamaejasmin B (1), mesoneochamaejasmin A (2), chamaejasmenin C (3), genkwanol A (6), daphnodorin B (7) and dihydrodaphnodorin B (8) with IC50 values of 6.9, 12.1, 43.2, 74.8, 7.1 and 27.3 mu g/mL, respectively, and all of these compounds disrupted root development. Endogenous auxin levels at the root tips of the A. thaliana DR5::GUS transgenic line were largely reduced by compounds 1,2 and 6-8, and were increased by compound 4. Moreover, the inhibition rate of A. thaliana auxin transport mutants pin2 and aux1-7 by compounds 1-8 were all lower than the wild type (Col-0). The influence of these compounds on endogenous auxin distribution is thus proposed as a critical factor for the phytotoxic effect. Compounds 1, 2, 4 and 8 were found in soils associated with S. chamaejasme, and these flavonoids also showed phytotoxicity to Clinelymus nutans L., an associated weed of S. chamaejasme. These results indicated that some phytotoxic compounds from roots of S. chamaejasme may be involved in the potential allelopathic behavior of this widespread weed. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordStellera chamaejasme L. Thymelaeaceae Roots Flavonoids Phytotoxicity Arabidopsis thaliana Brassicaceae Auxin Soil
Subject AreaBiochemistry & Molecular Biology ; Plant Sciences
PublisherELSEVIER
DOI10.1016/j.phytochem.2014.07.013
Publication PlaceOXFORD
Indexed BySCIE ; PubMed ; MEDLINE
Language英语
First Inst
Funding Project国家自然科学基金项目
Project NumberNational Natural Science Foundation of China [31070386] ; State Key Laboratory of Applied Organic Chemistry, Lanzhou University ; Basic Research Program of Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences [080423SYR1]
WOS IDWOS:000342258600006
Funding OrganizationNSFC ; LZU
SubtypeArticle
PMID 25096753
Department
[Yan, Zhiqiang;
Guo, Hongru;
Yang, Jiayue;
Liu, Quan;
Jin, Hui;
Xu, Rui;
Cui, Haiyan;
Qin, Bo] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China;
[Yan, Zhiqiang;
Guo, Hongru...更多
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/103251
Collection化学化工学院
Corresponding AuthorQin, B (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China.
Recommended Citation
GB/T 7714
Yan, ZQ,Guo, HR,Yang, JY,et al. Phytotoxic flavonoids from roots of Stellera chamaejasme L. (Thymelaeaceae)[J]. PHYTOCHEMISTRY,2014,106:61-68.
APA Yan, ZQ.,Guo, HR.,Yang, JY.,Liu, Q.,Jin, H.,...&Qin, B .(2014).Phytotoxic flavonoids from roots of Stellera chamaejasme L. (Thymelaeaceae).PHYTOCHEMISTRY,106,61-68.
MLA Yan, ZQ,et al."Phytotoxic flavonoids from roots of Stellera chamaejasme L. (Thymelaeaceae)".PHYTOCHEMISTRY 106(2014):61-68.
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