Mechanism of aluminum toxicity recovery in plant root

与恢复根相比，持续铝处理的根在根表面和外部皮层区域形成了严重的断裂，并伴随着与氧化胁迫相关的更高水平的超氧阴离子、过氧化氢和木质素。但两种根均可诱导脂质过氧化，但差异不显著。在恢复处理过程中，观察到中心圆柱体的重新伸长。铝处理后，根表面形成了以死亡细胞为主的带状区域。带状〓区起到阻挡有毒铝进入中心区的作用。因此，该区域似乎有一种程序化的细胞样功能。

The continued Al treatment root showed sever rupture formation at root surface and outer cortex region concomitant with higher level of superoxide anion, H2O2 and lignin related with the oxidative stress compared to the recovery root. However, lipid peroxidation was induced in both roots without significant difference. Re-elongation of central cylinder was observed during the recovery treatment. The belt-like region consisting of mainly dead cells was formed on the root surface by Al treatment. The belt 〓like region has a role as barrier inhibiting the entry of toxic Al into the central region. Thus the region seems to have a programmed cell like function.