Journal of Tropical Oceanography >
Physiological response characteristics of four mangrove plants seedlings to heavy metal stress
Copy editor: LIN Qiang
Received date: 2021-09-02
Revised date: 2021-09-27
Online published: 2022-11-29
Supported by
National Key Research and Development Program of China(2017FY100700)
National Natural Science Foundation of China(U1901211)
National Natural Science Foundation of China(41876126)
International Partnership Program of Chinese Academy of Sciences(133244KYSB20180012)
Strategic Priority Research Program of the Chinese Academy of Sciences(XDA23050200)
Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0305)
The change characteristics of physio-biochemical indexes of four mangrove plants Rhizophora stylosa, Kandelia obovata, Bruguiera gymnorhiza and Ceriops tagal seedlings after 28 days of heavy metal aqueous solution stress at different concentrations were studied, including soluble protein content, superoxide dismutase (SOD), and peroxidase (POD) activity and oxidative damage marker malondialdehyde (MDA) content. The study results showed that the SOD and POD activities in the leaves of the four plants all increased first and then decreased. When the Rhizophora stylosa were treated with 10 times the heavy metal aqueous solution, the Kandelia obovata and Bruguiera gymnorhiza were treated with 5 times the heavy metal aqueous solution, the Ceriops tagal were treated with 1 time the heavy metal aqueous solution, it has good antioxidant enzyme activity during heavy metal aqueous solution treatment, which can effectively remove active oxygen and reduce oxidative damage. Under the same concentration of heavy metal aqueous solution treatment, the results of MDA content showed that the damage of the Rhizophora stylosa was the least, the Kandelia obovata and the Bruguiera gymnorhiza were equally damaged, and the Ceriops tagal were the heaviest. The ability of Rhizophora stylosa to resist heavy metal stress is stronger than Kandelia obovate and Bruguiera gymnorhiza, while the ability of Ceriops tagal to resist heavy metal is the weakest. These results show that mangrove plants have strong ability for anti-pollution, which has important guiding significance for mangrove ecological restoration and protection in China.
XIE Yong , WANG Youshao . Physiological response characteristics of four mangrove plants seedlings to heavy metal stress[J]. Journal of Tropical Oceanography, 2022 , 41(6) : 28 -34 . DOI: 10.11978/2021118
表1 不同处理重金属浓度Tab. 1 Concentrations of heavy metals in the different treatments |
重金属 | 浓度/(mg·L-1) | |||||
---|---|---|---|---|---|---|
对照组(CK) | 1倍水溶液(T1) | 5倍水溶液(T2) | 10倍水溶液(T3) | 15倍水溶液(T4) | ||
Cu2+ | 0 | 7.5 | 37.5 | 75 | 112.5 | |
Pb2+ | 0 | 1.5 | 7.5 | 15 | 22.5 | |
Cd2+ | 0 | 0.3 | 1.5 | 3 | 4.5 | |
Hg2+ | 0 | 0.3 | 1.5 | 3 | 4.5 |
表2 重金属胁迫下各生理生化指标间的相关性Tab. 2 Correlation between various physiological and biochemical indexes under heavy metal stress |
可溶性蛋白 | SOD | POD | MDA | |
---|---|---|---|---|
可溶性蛋白 | 1 | |||
SOD | -0.088 | 1 | ||
POD | -0.935** | 0.292 | 1 | |
MDA | -0.834** | 0.087 | 0.836** | 1 |
注:**表示在0.01级别(双尾)相关性极显著 |
[1] |
邓利, 张慧敏, 劳大荣, 等, 2014. 福田红树林自然保护区沉积物重金属污染现状及生态风险评价[J]. 海洋环境科学, 33(6): 947-953.
|
[2] |
蒋大程, 高珊, 高海伦, 等, 2018. 考马斯亮蓝法测定蛋白质含量中的细节问题[J]. 实验科学与技术, 16(4): 143-147.
|
[3] |
孙天国, 沙伟, 刘岩, 2010. 复合重金属胁迫对两种藓类植物生理特性的影响[J]. 生态学报, 30(9): 2332-2339.
|
[4] |
王芳洲, 王友绍, 2020. Cu2+、 Pb2+胁迫对秋茄幼苗可溶性蛋白和抗氧化酶活性的影响[J]. 生态科学, 39(4): 10-18.
|
[5] |
王宏镔, 束文圣, 蓝崇钰, 2005. 重金属污染生态学研究现状与展望[J]. 生态学报, 2005(3): 596-605.
|
[6] |
王友绍, 孙翠慈, 王玉图, 等, 2019. 生态学理论与技术创新引领我国热带、亚热带海洋生态研究与保护[J]. 中国科学院院刊, 34(1): 121-129.
|
[7] |
王友绍, 2019. 红树林分子生态学[M]. 北京: 科学出版社: 23-24.
|
[8] |
王友绍, 2021. 全球气候变化对红树林生态系统的影响、挑战与机遇[J]. 热带海洋学报, 40(3): 1-14.
|
[9] |
赵胡, 唐俊, 郑文教, 2016. 重金属Cu2+胁迫对红树植物秋茄幼苗生长及某些生理特性的影响[J]. 海洋科学, 40(4): 65-72.
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
/
〈 |
|
〉 |