Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (1): 105-114.DOI: 10.1016/S2095-3119(13)60495-5

• 论文 • 上一篇    下一篇

The Extraction, Isolation and Identification of Exudates from the Roots of Flaveria bidentis

 YANG Xing, ZHANG Li-hui, SHI Cui-ping, SHANG Yan, ZHANG Jin-lin, HAN Jian-min , DONG   

  1. Molecular Plant Pathology Laboratory, College of Life Science, Agricultural University of Hebei, Baoding 071001, P.R.China
  • 收稿日期:2012-12-13 出版日期:2014-01-01 发布日期:2014-01-04
  • 通讯作者: DONG Jin-gao, Tel: +86-312-7528266, Fax: +86-312-7528142, E-mail: dongjingao@126.com
  • 作者简介:YANG Xing, Tel: +86-311-83521567, E-mail: x.yang14@newcastle.ac.uk
  • 基金资助:

    This research was supported by the Natural Science Foundation of Hebei Province, China (C2013204115) and the Science and Technology Support of Hebei Province, China (C20121124001).

The Extraction, Isolation and Identification of Exudates from the Roots of Flaveria bidentis

 YANG Xing, ZHANG Li-hui, SHI Cui-ping, SHANG Yan, ZHANG Jin-lin, HAN Jian-min , DONG   

  1. Molecular Plant Pathology Laboratory, College of Life Science, Agricultural University of Hebei, Baoding 071001, P.R.China
  • Received:2012-12-13 Online:2014-01-01 Published:2014-01-04
  • Contact: DONG Jin-gao, Tel: +86-312-7528266, Fax: +86-312-7528142, E-mail: dongjingao@126.com
  • About author:YANG Xing, Tel: +86-311-83521567, E-mail: x.yang14@newcastle.ac.uk
  • Supported by:

    This research was supported by the Natural Science Foundation of Hebei Province, China (C2013204115) and the Science and Technology Support of Hebei Province, China (C20121124001).

摘要: Large amounts of Flaveria bidentis’s root culturing solution were obtained by using DFT (deep flow technique) equipment and these solution which was vacuum concentrated (10, 20 mg mL-1) can have a certain inhibition on Triticum aestivum, Cucumis sativus, Raphanus sativus, Amaranthus retroflexus, Setaria viridis, Chenopodium album, Echinochloa crusgalli and Chloris virgata. This outcome suggested some active compounds in the root exudates of Flaveria bidentis can inhibit the germination, seedling elongation and root length. The dichloromethane extract of root exudates was identificated by GC-MS, and 29 kinds of compounds, including esters, hydrocarbons, ketones, thiazole, amines, etc. were obtained and the phthalate n-octyl ester, phthalate 2-ethylhexyl ester were proved to be allelochemicals. The culturing solution of root exudates was separated through the resin column and silica gel column and a component inhibiting seedling height, root length and fresh weight of wheat was got. There were 6 kinds of organic compounds in this component including dioctyl phthalate, 1,2-phthalate, mono(2-ethylhexyl) ester by GC-MS.

关键词: extraction , isolation , identification , exudates , Flaveria bidentis

Abstract: Large amounts of Flaveria bidentis’s root culturing solution were obtained by using DFT (deep flow technique) equipment and these solution which was vacuum concentrated (10, 20 mg mL-1) can have a certain inhibition on Triticum aestivum, Cucumis sativus, Raphanus sativus, Amaranthus retroflexus, Setaria viridis, Chenopodium album, Echinochloa crusgalli and Chloris virgata. This outcome suggested some active compounds in the root exudates of Flaveria bidentis can inhibit the germination, seedling elongation and root length. The dichloromethane extract of root exudates was identificated by GC-MS, and 29 kinds of compounds, including esters, hydrocarbons, ketones, thiazole, amines, etc. were obtained and the phthalate n-octyl ester, phthalate 2-ethylhexyl ester were proved to be allelochemicals. The culturing solution of root exudates was separated through the resin column and silica gel column and a component inhibiting seedling height, root length and fresh weight of wheat was got. There were 6 kinds of organic compounds in this component including dioctyl phthalate, 1,2-phthalate, mono(2-ethylhexyl) ester by GC-MS.

Key words: extraction , isolation , identification , exudates , Flaveria bidentis