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应用生态学报 ›› 2017, Vol. 28 ›› Issue (11): 3767-3774.doi: 10.13287/j.1001-9332.201711.038

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污水与镉复合胁迫对玉米幼苗代谢物的影响

李萌, 陈佳月, 解静芳*, 吕佳莉, 高少龙, 刘瑞卿   

  1. 山西大学环境与资源学院, 太原 030006
  • 出版日期:2017-11-18 发布日期:2017-11-18
  • 通讯作者: *mail:xiejf@sxu.edu.cn
  • 作者简介:李萌, 女, 1992年生, 硕士研究生.主要从事环境毒理学与化学研究.E-mail:85380631@qq.com
  • 基金资助:
    本文由国家自然科学基金项目(30740037)和国家公益性行业(农业)科研专项(201103024)资助

Effects of sewage and Cd combined stress on metabolites of maize seedling

LI Meng, CHEN Jia-yue, XIE Jing-fang*, LYU Jia-li, GAO Shao-long, LIU Rui-qing   

  1. College of Environment and Resource, Shanxi University, Taiyuan 030006, China
  • Online:2017-11-18 Published:2017-11-18
  • Contact: *mail:xiejf@sxu.edu.cn
  • Supported by:
    This work was supported by the Natio-nal Natural Science Foundation of China (30740037) and the Special Fund for Agro-scientific Research in the Public Interest (201103024)

摘要: 运用GC-MS技术结合AMDIS软件对代谢物种类、含量及其代谢途径进行分析,研究污水与镉复合胁迫对玉米幼苗代谢物的影响.共鉴定出50种代谢物.在镉单一胁迫下,玉米幼苗苹果酸含量降低,柠檬酸含量升高,植株体内三羧酸循环稳定;在污水与镉复合胁迫下,柠檬酸和苹果酸含量均显著增加,复合胁迫阻碍了三羧酸循环的正常进行.镉单一胁迫和污水与镉复合胁迫均导致葡萄糖含量显著下降,与抗逆相关的物质腐胺、脯氨酸、肌醇和γ-氨基丁酸含量均显著升高,表明光合作用受到抑制,但以复合胁迫的变化更为明显.表明污水与镉复合胁迫对玉米幼苗代谢物影响的作用机制主要是通过阻碍三羧酸循环和抑制光合作用进行.

Abstract: To investigate the influences of sewage and cadmium combined stress on maize seedling metabolites, we took GC-MS metabonomics technology to analyze the metabolite species, content and metabolic pathways. A total of 50 kinds of metabolites were identified. Under single stress of Cd, the malic acid content in maize seedling decreased, the citric acid content increased significantly, and the tricarboxylic acid cycle was relatively stable. Under the combined stress, both malic acid and citric acid contents increased significantly, and the tricarboxylic acid cycle was inhibited. Both single Cd stress and combined stress of sewage and Cd, especially the latter, led to the decrease of glucose and the increase of those substances related to resistance, such as proline, putrescine, muscle and γ-aminobutyric acid, which indicated the photosynthesis was inhibited. It was concluded that sewage and cadmium combined stress influence on maize seedling metabolites mainly by inhibiting the tricarboxylic acid cycle and photosynthesis.