Mechanism of aluminum toxicity recovery in plant root

与恢复根相比，持续铝处理根表面和外皮质区出现严重断裂，且与氧化胁迫相关的超氧阴离子、H2O2和木质素含量较高。脂质过氧化作用在两根中均无显著差异。在恢复过程中观察到中心柱的再伸长。Al处理后，根表面形成以死细胞为主的带状区域。带状区域具有抑制有毒Al进入中部区域的屏障作用。因此，该区域似乎具有类似程序化细胞的功能。

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.