转基因高蛋氨酸大豆对根际土壤主要有机元素和酶活性的影响

Effect of a high-methionine transgenic soybean( Glycine max) on soil organic elements and enzyme activities in the rhizosphere

【目的】为了评估转基因高蛋氨酸大豆ZD91对土壤生态系统的安全性,开展了其对土壤主要有机元素和酶活性影响的实验。【方法】连续2年,在大豆苗期、花期、鼓粒期和成熟期,采用抖落法采集根际土壤样品,通过室内测定,分析了转基因大豆ZD91对根际土壤含水量、pH、主要有机元素和酶活性的影响。【结果】转基因大豆ZD91较之对应的非转基因大豆对根际土壤含水量、pH、主要有机元素和酶活性无显著影响,但同一种酶活在不同年份和不同生育期存在显著差异。【结论】转基因大豆ZD91对土壤生态系统具有安全性。

【 Aim】 In order to evaluate the safety of transgenic, high-methionine soybean ZD91 to the soil component of ecosystems, we studied the impact of transgenic soybean ZD91 on the main organic elements and enzyme activities in the soil.【 Method】 Rhizo- sphere soil samples were collected at four different growth stages （ seedling, flowering, pod-setting,a n d maturity） in two consecutive growing seasons,and the effect on soil moisture, pH,a mounts of total C and total N,a nd invertase a n d alkaline phosphatase activi-ties were measured under the laboratory conditions.【 Result】 The results s howed that growing transgenic soybean Z D 9 1 had no sig-nificant effects on soil moisture, pH , the concentrations of m a i n soil organic elements and e n z y m e activities in rhizosphere compared to similar parameters in soil under non-transgenic soybean. Invertase and alkaline phosphatase activities showed significant differ-ences in different years and different growth stages. 【 Conclusion】 Transgenic soybean ZD91 is safety for soil ecosystem.