In this study,the effect of iron-manganese plaque amounts on Cd accumulation in Phytolacca americana under Pb-Cd combined stress was investigated with various physio-biochemical parameters( growth conditions,Cd accumulation and the expression levels of stress resistant physiological activator). Results indicated that P. americana with middle plaque and thick plaque had developed lateral roots and more new roots. High Cd concentration significantly inhibited the root elongation. Cd accumulation in P. america...
【基金】
福建省自然科学基金(No.2013J01123)~~
【更新日期】
2017-02-09
【分类号】
X173
【正文快照】
1引言(Introduction)铁锰氧化胶膜常见于水生或湿地植物根表,例如:紫菀、羊胡子草、半边莲、水稻、芦苇、香蒲等(Batty et al.,2000),X-射线荧光显微断层图谱显示植物根表铁锰氧化胶膜的主要组成是铁锰氧化物及其水合物.由于锰膜形成需要的氧化还原电位比铁膜高,所以植物根表铁
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