镉胁迫下剑麻生理响应分析  

Physiological Response of Sisal under Cadmium Stress

作　　者：陈河龙[1] 李静 谭施北[1] 吴伟怀[1] 习金根[1] 易克贤[1,3] CHEN Helong;LI Jing;TAN Shibei;WU Weihuai;XI Jingen;YI Kexian(Environment and Plant Protection Institute,CATAS/Key Laboratory of Low Carbon Green Agriculture in Tropical China,Minis-try of Agriculture and Rural Affairs,Haikou,Hainan 571101,China;State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering,Ministry of Education,Guizhou University,Guiyang,Guizhou 550025,China;Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences,Sanya,Hainan 572025,China)

机构地区：[1]中国热带农业科学院环境与植物保护研究所/农业农村部热带农业绿色低碳重点试验室,海南海口571101 [2]贵州大学绿色农药与农业生物工程教育部重点试验室/绿色农药与农业生物工程国家重点试验室培育基地,贵州贵阳550025 [3]中国热带农业科学院三亚研究院,海南三亚572025

出　　处：《热带农业科学》2024年第11期19-22,共4页Chinese Journal of Tropical Agriculture

基　　金：国家麻类产业技术体系(No.CARS-16);海南省自然科学基金(No.321RC624)。

摘　　要：中国土壤镉污染已成为全社会关注的焦点,污染治理已迫在眉睫。剑麻由于特点突出和较强的重金属耐性,是镉污染土壤修复潜在目标植物,但镉胁迫下剑麻生理响应尚不清楚,针对此问题开展镉胁迫下剑麻生理响应研究。结果表明:不同浓度Cd胁迫剑麻叶片中MDA含量在不同时段均显著升高,同一处理浓度下,随着处理时长的增加,MDA含量也呈上升趋势;短时间Cd胁迫下,低浓度(<20 mg/kg)时,对剑麻叶绿素含量有促进作用,而高浓度(≥20 mg/kg)有抑制作用,且随胁迫时间增长,剑麻叶片叶绿素含量总体呈下降趋势。研究结果为利用剑麻修复镉污染土壤技术提供理论依据。Cadmium contamination of soil in China has become the focus of the society as a whole.Therefore,soil cadmium pollution control is urgently needed.Owing to its outstanding characteristics and strong tolerance to heavy metals,sisal is a potential target plant for the remediation of cadmium-contaminated soil.However,the physiological reaction response of sisal under cadmium stress remains unclear.The physiological response of sisal under cadmium stress was studied to address this problem.The results revealed that the MDA content of sisal leaves under different Cd concentrations increased significantly at various periods.The MDA content of the same treatment also increased with increasing treatment time.When sisal was sub-jected to Cd stress for a short time,a low concentration(<20 mg·kg^(-1))promoted the chlorophyll content of sisal,and a high concentration(≥20 mg·kg^(-1))was inhibitory.The chlorophyll content of sisal leaves tended to decrease with increasing time.These results provide a theoretical basis for the use of sisal to remediate cadmium-contaminated soil.

关 键 词：剑麻 镉胁迫 生理响应 土壤修复 

分 类 号：S533[农业科学—作物学]