Response of Plant Root Activity on Phenanthrene Concentration—Taking Koelreuteria Paniculata and Cinnamomum Camphora as Examples

Jing Chengran; Yao Wenyi; Xiao Peiqing; Shen Zhenzhou; Jiao Peng; Ma Li

doi:10.13961/j.cnki.stbctb.2019.04.027

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Response of Plant Root Activity on Phenanthrene Concentration—Taking Koelreuteria Paniculata and Cinnamomum Camphora as Examples

- Response of Plant Root Activity on Phenanthrene Concentration—Taking Koelreuteria Paniculata and Cinnamomum Camphora as Examples
- Bulletin of Soiland Water Conservation Vol. 39, Issue 4, Pages: 172-176(2019)
- 作者机构：
  
  黄河水利科学研究院水利部黄土高原水土流失过程与控制重点实验室,河南,郑州,450003
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2019.04.027
  CLC： S719;S714
- Published：2019
- 稿件说明：
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Jing Chengran, Yao Wenyi, Xiao Peiqing, et al. Response of Plant Root Activity on Phenanthrene Concentration—Taking Koelreuteria Paniculata and Cinnamomum Camphora as Examples[J]. Bulletin of Soiland Water Conservation, 2019, 39(4): 172-176.
DOI：

Jing Chengran, Yao Wenyi, Xiao Peiqing, et al. Response of Plant Root Activity on Phenanthrene Concentration—Taking Koelreuteria Paniculata and Cinnamomum Camphora as Examples[J]. Bulletin of Soiland Water Conservation, 2019, 39(4): 172-176. DOI： 10.13961/j.cnki.stbctb.2019.04.027.

摘要

[目的

]

分析栾树、樟树根系分泌物在菲胁迫下的变化特征，为筛选抗多环芳烃污染树种，进一步开展植物修复多环芳烃污染提供科学依据。[方法

]

设置3种菲处理浓度[L

（CK，0 mg/kg）；L

（100 mg/kg）；L

（1 000 mg/kg）

]

，通过盆栽试验的方法，对栾树、樟树的根系分泌物中总有机碳（TOC）、全碳（TC）、全氮（TN）含量及根系活性进行测定。[结果

]

①随着菲浓度的升高，栾树与樟树根系分泌物中TOC与TC含量均呈下降趋势，TN含量则呈先升后降的趋势；②随着菲浓度的升高，栾树和樟树根系的总吸收面积和活跃吸收面积总体呈下降趋势；③3个处理水平下，栾树根系分泌物中TC，TOC，TN含量均高于樟树，且栾树根系总吸收面积和活跃吸收面积也高于樟树。[结论

]

通过菲胁迫下栾树与樟树根系分泌量和根系活性的比较，表明栾树相较于樟树对菲具有更好的耐受性。

Abstract

[Objective] The changes of root exudates of Koelreuteria paniculata and Cinnamomum camphora under phenanthrene(PHE) were analyzed in order to provide scientific basis for screening tree species resistant to polycyclic aromatic hydrocarbons pollution and further phytoremediation of polycyclic aromatic hydrocarbons pollution.[Methods] Three concentrations of phenanthrene[L0(CK

0 mg/kg)

L1(100 mg/kg)

L2(1 000 mg/kg)] were set up in this experiment. Total organic carbon(TOC)

total carbon(TC)

total nitrogen(TN) and root activity in root exudates of Koelreuteria paniculata and Cinnamomum camphora trees were determined by pot experiment.[Results] ① With the increase of phenanthrene concentration

the contents of TOC and TC in root exudation of Koelreuteria paniculata and Cinnamomum camphora decreased

while the contents of TN increased first and then decreased with the increase of phenanthrene concentration; ② With the increase of phenanthrene concentration

the total absorption area and active absorption area of roots of Koelreuteria paniculata and Cinnamomum camphora showed a downward trend. ③ Under the three treatments

the contents of TC

TOC and TN in root exudates of Koelreuteria paniculata were higher than those of Cinnamomum camphora

and the total and active absorption areas of Koelreuteria paniculata root were also higher than those of Cinnamomum camphora.[Conclusion] By comparing root exudation and root activity of Koelreuteria paniculata and Cinnamomum camphora under phenanthrene stress

it showed that Koelreuteria paniculata had better tolerance to phenanthrene than Cinnamomum camphora.

关键词

Keywords

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