The soil in southern china is acidic soil, Aluminum(Al) toxicity and boron(B) deficiency are main limiting factors for plant growth in this soil. B and Al both have influence on cell wall and auxin transport, therefore, B can alleviate Al toxicity in plant. Our previous studies showed B could reduce the accumulation of Al in root and cell wall, and block Al transferred from root to shoot. However, the cytological mechanisms of B in alleviating Al toxicity is little known. Especially, the relationship betwee...