Aluminum Tolerance in Moso Bamboo (Phyllostachys pubescens)

• 作 者: RenyiGui[1]HuananLeng[1]ShunyaoZhuang[2]KangleZheng[1]WeiFang[1]
• 机 构: Nurturing Station of State Key Lab of Sub-tropical Silviculture,Zhejiang A & F University,311300 Han
• 出 处: 中国林学会竹子分会成立20周年暨第五次会员代表大会、第八届中国竹业学术大会
• 发表日期: 2012年期

　　Moso bamboo (Phyllostachys pubescens) is widely distributed in the acid soil region of Southern China,where great potential of aluminum (Al) toxicity exists.To evaluate the Al tolerance of Moso bamboo,seed germination and root elongation were compared with two rice cultivars,and physical and physiological damages were examined under various levels of Al stress.Results showed that Moso bamboo seed germination was inhibited when Al concentration increased to 500 μM,and the median lethal concentration was 2,000μM.Comparatively,the rice seed germination was not inhibited even at a concentration of 2,000μM Al.Aluminum accumulated mainly in the cell wall of root apices,and entered into protoplasts as treating time prolonged and/or Al concentration increased,which resulted in apoptosis.The bamboo root epidermis degraded significantly in the presence of 2,000 μM Al.In conclusion,Moso bamboo is moderately weak in Al tolerance.