The present study was intended to investigate the role of algae, Anabaena sp. in the amelioration of As toxicity, when co-cultured with rice seedlings. The reduction of growth in rice seedlings against As(III) and As(V) was recovered with Anabaena sp. The Anabaena sp. also reduced the accumulation of As, where it was more efficient against 60 µM As(III) (49%) than As(V) (23%) in rice shoot. Similarly, with reduction of As accumulation, lower silicon transporters (Lsi-1 and Lsi-2) was found to be suppressed against As treatments. However, the expression of two nitrogen dependent genes i.e., NR and SAMT were found to be enhanced with the Anabaena sp. Likewise, the activity of antioxidant enzyme, GST, was enhanced, whereas, the activity of other enzymes such as SOD, APX, GPX, GR and DHAR were decreased with As+Algae combinations. Overall, the result suggested that the Anabaena sp. reduces As accumulation, modulates gene expressions and antioxidants to ameliorate the As toxicity in Oryza sativa L.

本研究旨在调查藻类Anabaena sp。的作用。与水稻幼苗共培养时，可改善砷的毒性。用鱼腥藻恢复了水稻幼苗抗As（III）和As（V）的生长减少。在鱼腥藻。还可减少砷的积累，在水稻芽中，砷对60 µM砷（III）（49％）的效率高于砷（V）（23％）。类似地，随着As积累的减少，发现较低的硅转运体（Lsi-1和Lsi-2）相对于As处理受到抑制。然而，发现两个氮依赖基因，即NR和SAMT的表达被鱼腥藻增强了。sp。同样，抗氧化剂酶GST的活性增强，而As +藻类组合降低了其他酶的活性，如SOD，APX，GPX，GR和DHAR。总体而言，结果表明鱼腥藻属。减少As的积累，调节基因表达和抗氧化剂，以改善Oryza sativa L中As的毒性。