Study on Absorptive Capacity to Formaldehyde and Physiological and Biochemical Changes of Scindapsus aureus Based on the Regulation of LaCl_3  

基于LaCl_3调控作用下绿萝净化甲醛能力及生理生化变化研究（英文）

作　　者：闫生荣 花海蓉 张跃群 周青[3] 

机构地区：[1]南通科技职业学院环境与资源系,江苏南通226007 [2]江苏省农村环境污染防治工程技术研究开发中心,江苏南通226007 [3]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《Agricultural Science & Technology》2015年第12期2596-2599,共4页农业科学与技术（英文版）

基　　金：Supported by Qing Lan Project for Outstanding Young Teachers in Higher Education Institutions of Jiangsu Province(SJS[2010]27);College Students’Innovative Entrepreneurial Training Program of Jiangsu Province in 2014(SJBG[2010]8);Funding Project for Rural Environment Pollution Control Engineering and Technological Research Center of Jiangsu Province(SJK[2011]13);Funding Project of Science and Technology Plan in Nantong City(HS2014025);First Petty Funding Project for Ecological Construction of Nantong City(TH[2014]33)~~

摘　　要：[Objective] This study was to analyze LaCl3 sprayed onto Scindapsus au- reus on Chlorophyll content and plasmamembrane permeability of leaves of Scindap- sus aureus, in order to determinate a suitable dosage of LaCl3. [Method] With Scindapsus aureus as the test subject, 110 households of 20 communities in the New District of Nantong were selected to investigate formaldehyde concentration in indoor air; and effect of LaCl3 on absorptive capacity to formaldehyde of Scindapsus aureus was studied through fumigating in laboratory. Simultaneously, its physiological and biochemical mechanism of formaldehyde resistance was studied. [Result] The re- sults showed that formaldehyde pollution of indoor air was serious in the New District of Nantong, and the degree of pollution was related to the time after decoration. The suitable concentration of LaCl3 for Scindapsus aureus was 20 mg/L. The ability to ab- sorb formaldehyde of Scindapsus aureus, which was calculated by per unit leaf area, was enhanced after spraying the suitable concentration of LaCl3 by 19.75%. When Scindapsus aureus was stressed by formaldehyde, chlorophyll content decreased by 39.87%, membrane permeability and cumulative MDA amount increased by 8.17% and 56.92%, respectively, and POD activity increased by 11.32%. However, by com- paring the group pre-sprayed with LaCl3 and the group not sprayed with LaCl3 under formaldehyde stress, chlorophyll content of Scindapsus aureus reduced lessly, mem- brane permeability and MDA both increased lessly, while POD activity increased more. [Conclusion] This study provides a new thinking direction for broadening of rare earth application and control measures of indoor air pollution.[目的]分析喷施稀土LaCl_3对绿萝叶片叶绿素含量和质膜透性的影响,进而确定绿萝喷施LaCl_3的适宜剂量。[方法]以室内观赏植物绿萝作为受试对象,对南通市新城区20个居民小区共110家住户,进行入户调查与检测空气中甲醛污染状况;采用熏蒸法考察LaCl_3对甲醛胁迫下室内观赏植物绿萝降醛能力的影响,并研究其甲醛抗性的生理生化机制。[结果]研究结果表明,南通市新城区居室空气甲醛污染较为严重,污染程度与装修后时间长短有关;绿萝喷施LaCl_3的适宜浓度为20mg/L;在喷施适宜浓度LaCl_3之后,室内观赏植物绿萝单位叶面积吸收甲醛能力有所增强,提升幅度为19.75%;甲醛胁迫下,绿萝叶绿素含量降低了39.87%,质膜透性和MDA累积量分别增加了8.17%、56.92%,POD活性升高了11.32%;经LaCl_3预处理后,较甲醛胁迫组,绿萝叶绿素含量降幅与质膜透性、MDA浓度增幅均变小,而POD活性增幅变大。[结论]该研究为稀土应用拓展及室内空气污染防治对策提供了新的思考方向。

关 键 词：LACL3 Scindapsus aureus Absorptive capacity to formaldehyde Physio- logical and biochemical mechanism 

分 类 号：S682.36[农业科学—观赏园艺]