森林与环境学报2017，Vol.37Issue(4)：398-404,7.DOI:10.13324/j.cnki.jfcf.2017.04.003
类芦对铅胁迫的生理响应
Physiology response of Neyraudia reynaudiana under Pb stress
摘要
Abstract
In order to understand the response mechanism of the growth of Neyraudia reynaudiana in Pb contaminated mining area, a pot culture experiment was carried out to study physiological indexes of N. reynaudiana under different Pb stress. The result showed that low Pb concentration ( 250 mg·kg-1 ) could significantly boost plant growth such as plant height, length and area of root, and whole plant biomass compared with CK. High Pb concentration (500, 750 mg·kg-1) gradually inhibited the growth trend of N. reynaudiana while the performance, including leaf length, volume and diameter of root, were still stonger than that of CK ( P<0.05) . Malondialdehyde ( MDA) content increased dramatically, while superoxide dismutase ( SOD) , peroxidase ( POD) , and catalase ( CAT) were decrease under the growing Pb stress. Pb stress didn′t show much impact on the content of chlorophyll a and b. Transfer coefficient was bigger than 1 suggesting N. reynaudiana had the ability to move Pb. By adjusting organs morphology, promoteing root development and root shoot ratio, keeping the speed of photosynthesis and transportation stable, N. reynaudiana had showed its adaptability to limited Pb stress that had a application potential in the remediation of Pb polluted soil.关键词
类芦/铅胁迫/形态响应/酶活性Key words
Neyraudia reynaudiana ( Kunth) Keng/Pb stress: morphology response/enzyme activity分类
资源环境引用本文复制引用
韩航,陈雪娇,陈顺钰,侯晓龙,刘爱琴,蔡丽平..类芦对铅胁迫的生理响应[J].森林与环境学报,2017,37(4):398-404,7.基金项目
国家自然科学基金项目(41401364) （41401364）
福建省科技厅重点项目(2017Y0001) （2017Y0001）
国家科技支撑计划项目(2014BAD15B02) （2014BAD15B02）
国家林业局林业公益性行业科研项目(201304303). （201304303）
