The nutritive tissues of galls induced by Ditylenchus gallaeformans (Nematoda) have promeristematic capacity, which may turn these galls into sinks of Al on their Melastomataceae Al-accumulating hosts. Such a sink of Al may affect gall growth and mineral nutrient intake. Based on the fact that galls are good models for plant developmental studies, we aimed to understand how Al-accumulating host plants in the Cerrado environment deal with Al toxicity in subcellular levels. Here, we used the ICP-OES method to check the variations on mineral nutrients, and the morin, hematoxylin, and Prussian blue stainings for Al and Fe histolocalization in galls induced on four Miconia species of the Brazilian Cerrado. We confirmed the new Al-accumulating feature for two Miconia species of the Cerrado environment. Furthermore, we found that Al accumulates in lesser concentrations in gall tissues than in non-galled tissues of the Miconia hosts. Staining methods indicated that the polyphenols avoid Al-binding to the apoplast and the nucleolus of the promeristematic cells, and mediated its binding to parenchyma cell walls. As well, we inferred that Fe³⁺ is transported by xylem and stored in gall parenchyma, where it is reduced to Fe²⁺, being available in gall nutritive cells. Our results demonstrated an Al compartmentalization between the apoplast and symplast of the inner cell layers in galls, as well as indicated the phenolics action against Al-toxicity and toward Fe availability for the diet of Ditylenchus gallaeformans.

由Ditylenchus gallaeformans（Nematoda）诱导的胆汁的营养组织具有促繁殖能力，这可能使这些胆汁在其Melastomataceae积累铝的宿主上变成Al的汇。铝的这种下沉会影响胆汁的生长和矿物质的摄入。基于胆汁是植物发育研究的良好模型这一事实，我们旨在了解在塞拉多环境中积累铝的寄主植物如何处理亚细胞水平的铝毒性。在这里，我们使用ICP-OES方法检查了矿物质营养的变化，以及在巴西Cerrado的4种Miconia物种引起的胆汁中Al和Fe组织定位的铁蛋白，苏木精和普鲁士蓝染色。我们确认了两个Miconia的新铝积累功能Cerrado环境的种类。此外，我们发现，在铝含量较低的胆组织比非组织擦伤积累Miconia主机。染色方法表明，多酚避免了Al与早幼粒细胞的质外体和核仁结合，并介导了其与实质细胞壁的结合。同样，我们推断出铁³⁺是由木质部转运并储存在胆囊实质中，然后在胆囊营养细胞中被还原为Fe ²⁺。我们的研究结果表明，胆囊内细胞层的质外体和共质体之间存在铝区隔，并且表明酚类物质对铝毒性和对鸡的饮食中铁的有效性具有抑制作用。。