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[1] Ma Yixuan, Huang Juan, Cao Chong, Cai Wenshu, et al. Effects of silver nanoparticles on resistance characteristicsof the wetland plant Typha orientalis in a hydroponic system [J]. Journal of Southeast University (English Edition), 2019, 35 (3): 381-388. [doi:10.3969/j.issn.1003-7985.2019.03.015]
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Effects of silver nanoparticles on resistance characteristicsof the wetland plant Typha orientalis in a hydroponic system()
水培系统中纳米银颗粒对湿地植物香蒲抗逆特性的影响
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
35
Issue:
2019 3
Page:
381-388
Research Field:
Environmental Science and Engineering
Publishing date:
2019-09-30

Info

Title:
Effects of silver nanoparticles on resistance characteristicsof the wetland plant Typha orientalis in a hydroponic system
水培系统中纳米银颗粒对湿地植物香蒲抗逆特性的影响
Author(s):
Ma Yixuan;  Huang Juan;  Cao Chong;  Cai Wenshu;  Xiao Jun;  Yan Chunni
School of Civil Engineering, Southeast University, Nanjing 210096, China
马溢轩;  黄娟;  曹冲;  蔡文舒;  肖君;  闫春妮
东南大学土木工程学院, 南京 210096
Keywords:
silver nanoparticles(AgNPs);  wetland plants;  Typha orientalis;  physiological and biochemical characteristics;  antioxidase
纳米银颗粒;  人工湿地;  香蒲;  生理生化特性;  抗氧化酶
PACS:
X173
DOI:
10.3969/j.issn.1003-7985.2019.03.015
Abstract:
To probe the influence and the adverse-resistance characteristics of wetland plants in presence of silver nanoparticles(AgNPs), the changes in the physiological and biochemical characteristics(including the superoxide dismutase(SOD)activity, catalase(CAT)activity, peroxidase(POD)activity, soluble protein content, and chlorophyll content)of Typha orientalis exposed to different concentrations of AgNPs solutions(0, 0.1, 1, 20 and 40 mg/L)were explored. Meantime, the accumulation of silver content in these plants was revealed. The results show that under low concentrations of AgNPs, the SOD and POD activities in the leaves of Typha orientalis are strengthened to different degrees. However, high concentrations of AgNPs inhibit the activities of SOD and POD. Under the stress of different concentrations of AgNPs, the CAT activities are inhibited initially and later recovered to some extent. Under the stress of low concentrations of AgNPs, the soluble protein content in the leaves of Typha orientalis increases significantly, but decreases more significantly with increasing concentrations of AgNPs. Low concentrations of AgNPs promote chlorophyll synthesis in the leaves of Typha orientalis, but the chlorophyll content subsequently falls to pre-stress levels. In contrast, high concentrations of AgNPs cause a certain inhibition to generate chlorophyll. Meanwhile, the results show that the silver concentrations of plant tissues increase with the exposure of concentrations of AgNPs and they have a positive relationship with the exposure of concentrations of AgNPs.
为了探究湿地植物在AgNPs胁迫下的抗逆特性, 实验研究了香蒲在不同浓度AgNPs(0、0.1、1、20、40 mg/L)胁迫下, 植物超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)活性、可溶性蛋白和叶绿素含量等生理生化特性的变化, 并揭示植物体内积累的银含量.结果表明, 低浓度AgNPs胁迫下, 香蒲叶片的SOD和POD活性均有不同程度的增强, 高浓度则相反.在不同浓度AgNPs胁迫下, CAT活性均为开始时受到抑制, 随后得到一定程度的恢复.低浓度AgNPs胁迫下, 香蒲叶片中可溶性蛋白含量会出现显著上升, 但会随AgNPs浓度增加显著降低.低浓度AgNPs胁迫下, 香蒲叶片叶绿素含量初期有所上升, 随后恢复初始水平;高浓度AgNPs对叶绿素的合成起到一定的抑制作用.实验表明, 随着AgNPs浓度增加, 植物组织中银含量不断增加, 并具有显著的正相关性.

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Memo

Memo:
Biographies: Ma Yixuan(1995—), male, Ph.D. candidate; Huang Juan(corresponding author), female, doctor, associate professor, seu070703@126.com.
Foundation item: The National Natural Science Foundation of China(No.51479034, 5151101102).
Citation: Ma Yixuan, Huang Juan, Cao Chong, et al. Effects of silver nanoparticles on resistance characteristics of the wetland plant Typha orientalis in a hydroponic system[J].Journal of Southeast University(English Edition), 2019, 35(3):381-388.DOI:10.3969/j.issn.1003-7985.2019.03.015.
Last Update: 2019-09-20