| 陈娱,王海娟,王宏镔.龙葵与3种外来入侵植物对Cd的富集和生理响应差异比较[J].农业环境科学学报,2024,43(9):1939-1950. |
| 龙葵与3种外来入侵植物对Cd的富集和生理响应差异比较 |
| Comparison of cadmium accumulation and physiological responses among Solanum nigrum L. and three alien invasive plants |
| 投稿时间：2023-11-16 |
| DOI：10.11654/jaes.2023-0972 |
| 中文关键词: 外来入侵植物 Cd 提取效率 生理生化 修复效果 |
| 英文关键词: alien invasive plant cadmium（Cd） extraction efficiency physiological and biochemical property remediation effectiveness |
| 基金项目:国家自然科学基金项目(31960264) |
|
| 摘要点击次数: 1394 |
| 全文下载次数: 1348 |
| 中文摘要: |
| 为研究本土Cd超富集植物龙葵（Solanum nigrum L.）和3种外来入侵植物鬼针草（Bidens pilosa L.）、紫茎泽兰（Ageratina adenophora Spreng）和紫茉莉（Mirabilis jalapa L.）对Cd污染土壤修复效果和生理响应的差异，采用室内盆栽试验，通过设置0、2、10、30 mg·kg-1不同Cd含量，探究本地种龙葵与3种入侵植物在不同Cd含量处理下对Cd富集、Cd提取效率、叶片光合色素含量、抗氧化酶活性、丙二醛和可溶性糖含量的变化。结果表明：在Cd处理下，鬼针草的地上部生物量均显著高于龙葵和其余2种入侵植物。所有Cd含量处理，鬼针草Cd提取效率均最高（0.61%~1.87%），紫茉莉最低（0.02%~0.03%），龙葵（0.30%~0.79%）和紫茎泽兰（0.24%~1.06%）居中。3种Cd含量处理下，鬼针草叶片叶绿素a、叶绿素b和类胡萝卜素含量在4种植物中最高，鬼针草叶片的抗氧化酶活性均显著高于龙葵，龙葵丙二醛含量显著高于入侵植物。逐步回归分析结果表明，龙葵Cd提取效率与叶片丙二醛含量呈显著负相关、与CAT活性呈显著正相关，鬼针草和紫茎泽兰Cd提取效率均与叶片丙二醛含量呈显著负相关。综上，对于含Cd 2~30 mg·kg-1的土壤进行植物修复时，入侵植物鬼针草比本地植物龙葵更具优势。 |
| 英文摘要: |
| The objective of this work was to study the differences in remediation effectiveness and physiological response to cadmium（Cd）- contaminated soil among a native Cd hyperaccumulator（Solanum nigrum L.）and three alien invasive plants（Bidens pilosa L., Ageratina adenophora Spreng and Mirabilis jalapa L.）. A pot experiment was conducted to compare Cd accumulation, Cd extraction efficiency, photosynthetic pigment contents, antioxidant enzyme activities, contents of malondialdehyde and soluble sugar in leaves of S. nigrum and three alien invasive species exposed to different contents of Cd（0, 2, 10 mg · kg-1, and 30 mg · kg-1）. The results showed that the aboveground biomass of B. pilosa was significantly higher than that of S. nigrum and the other two alien invasive plants when treated with Cd. Regardless of Cd contents, the highest Cd extraction efficiency was observed in B. pilosa（0.61%-1.87%）and the lowest was in M. jalapa（0.02%-0.03%）. The Cd extraction efficiency of S. nigrum（0.30%-0.79%）and A. adenophora（0.24%-1.06%）was at a moderate level. The highest contents of chlorophyll a, chlorophyll b, and carotenoid were observed in B. pilosa when treated with Cd. The antioxidant enzyme activities of B. pilosa were significantly higher than those of S. nigrum, and the contents of malondialdehyde in leaves of S. nigrum was significantly higher than that in invasive plants. Stepwise regression analysis showed that the Cd extraction efficiency of S. nigrum was significantly negatively correlated with the contents of malondialdehyde in its leaves, and significantly positively correlated with the CAT activity. The Cd extraction efficiency of B. pilosa and A. adenophora was significantly negatively correlated with the content of malondialdehyde in their leaves. In conclusion, compared with the native species, the invasive plant B. pilosa is more suitable for the remediation of Cd-contaminated soil at 2-30 mg·kg-1 Cd treatments in soil. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
