棉花学报2012，Vol.24Issue(1)：85-90,6.
转基因棉花不同生物量对土壤微生物群落结构的影响
Effects of Transgenic Bt Cotton Biomass on Soil Microbial Community Structure,Based on Pospholipid Fatty Acid Analysis
摘要
Abstract
We evaluated the effects of transgenic Bt cotton biomass on soil microbial communities using soil incubation and phospholipid fatty acid (PFLA) analysis. We used three transgenic Bt cotton lines (Jinmian 26, Jinmian 44, and CCRI 41) and their isogenic non-Bt cotton lines (Jinmian 7, Jihe 492, and CCRI 23). Different plant biomasses (0, 2, 4, 6, and 8 g) were mixed with 200 g of soil for each line, and incubated at 28 ℃ for 45 days. The total concentration of PLFAs significantly increased with increasing cotton biomass, and the microbial community was characterized by a predominance of fungi in the soil amended with cotton biomass in comparison with the control(soil without cotton biomass). In contrast, the microbial community was characterized by a predominance of bacteria and actinomycetes in the control soil. Differences between Bt-cotton and non-Bt soils depended on cotton lines and cotton biomass in the soil.关键词
生物量/土壤微生物/磷脂脂肪酸图谱分析/群落结构/转基因棉花Key words
community structure/ soil microbes/ Bt cotton/ phospholipid fatty acid analysis/ cotton biomass分类
农业科技引用本文复制引用
范巧兰,陈耕,李永山,张冬梅,柴永峰,李燕娥..转基因棉花不同生物量对土壤微生物群落结构的影响[J].棉花学报,2012,24(1):85-90,6.基金项目
国家自然科学基金(30871601) （30871601）
