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《Journal of Anhui Agricultural Sciences》 2007-24
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Effects of Rhodobacter sphaeroides on Cadmium Accumulations of Wheat Seedlings under Cadmium Stress

GUO Ling et al(College of Life Science and Technology,Shanxi University,Taiyuan,Shanxi 030006)  
The research on the effects of photosynthetic bacteria Rhodobacter sphaeroides suspension on cadmium accumulation of wheat seedlings under cadmium stress was conducted.In the hydroponic culture experiment with 3-factor cross-grouping randomized design,the effects of R.sphaeroides suspension on the concentration of Cd in culture solution during the growth period of wheat seedlings,and the effects of compound treatment of R.sphaeroides suspension with Cd2+ on the Cd accumulations in the stem and leaf,root of wheat seedlings were studied.With the delay of culture time the concentration of Cd2+ in culture solution was decreased,with greater reducing range in the initial growth stage of wheat seedlings.The Cd accumulations in the stem,leaf and root were increased along with the increment of Cd concentration in culture solution and the delay of culture time.The increasing range of Cd accumulation was greatest in the 7th~10th d and the Cd accumulation in root was more than that in the stem and leaf.After the application of R.sphaeroides solutions suspension,the Cd concentration in culture solution and the Cd accumulations in the stem,leaf and root were reduced by 1.9%~49.9%,12.3%~58.1% and 8.3%~53.9% respectively than that of CK.The research provided the theoretical basis for further exploiture of photosynthetic bacteria.
【Fund】: 国家科技攻关项目(2001BA540C)
【CateGory Index】: X173
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