Three experiments were conducted to investigate the Cd tolerance and accumulation ability of a forage grass, Pterocypsela indica. P. indica accumulated 31.40 and 69.68 mg/kg Cd in roots and shoots, respectively, and plant biomass was unaffected by soil Cd as high as 50 mg/kg. Cd pollution obviously increased the Cd content of the cell wall fraction and decreased that of the soluble fraction in plant roots, but had little effect on the subcellular Cd content in plant shoots. When soil was co-contaminated by 2.29 mg/kg Cd, 526.83 mg/kg Zn, and 595.38 mg/kg Pb, P. indica accumulated 61.63 mg/kg Cd, 4261.00 mg/kg Zn, and 75.27 mg/kg Pb in plant shoots. The results indicated that P. indica mainly detoxified Cd stress by improving the fixation of Cd on the cell wall of plant roots rather than shoots. P. indica is a potential Cd accumulator that has a high phytoremediation efficiency in Cd-Zn-contaminated soil.

进行了三个实验，以研究a草翼缘P对镉的耐受性和累积能力。P. indica在根和芽中分别累积31.40和69.68 mg / kg的Cd，而高达50 mg / kg的土壤Cd对植物生物量没有影响。Cd污染明显增加了植物根部细胞壁部分Cd的含量，降低了可溶性根中Cd的含量，但对芽苗中亚细胞Cd含量的影响很小。当土壤被2.29 mg / kg的Cd，526.83 mg / kg的Zn和595.38 mg / kg的Pb共同污染时，P稻在植物中积累的61.63 mg / kg的Cd，4261.00 mg / kg的Zn和75.27 mg / kg的Pb芽。结果表明，P。indica主要通过改善Cd在植物根部而不是枝条的细胞壁上的固定来消除Cd胁迫。印第安假单胞菌是潜在的Cd蓄积剂，在受Cd-Zn污染的土壤中具有很高的植物修复效率。