磷脂脂肪酸法分析野山参根区土壤微生物群落多样性

应用磷脂脂肪酸法(PLFA)分析了野山参根区土壤及对照土壤微生物群落结构特征.结果表明,野山参生长的根区土壤与对照土壤相比,微生物总量发生了明显的变化,均有减少的趋势;野山参根区中代表有致病特征的真菌种类18∶2w9,18∶1w9c,18∶1w9t的总量没有增加反而减少,这与以往的研究结果相反.应用主成分分析法从PLF...

Analysis of soil microbial diversity in wild ginseng with phospholipid fatty acid method

The ester-linked phospholipid fatty acid(PLFA) method was used to evaluate the soil microbial community diversity in two wild ginseng root zone and corresponding control. The results showed that root zone campar with control,the total soil microbial biomass in root zone changed obviously and all depressed trend presented a tendency of decrease compared with that of control;the total represent fungi with the pathogenic efficacy 18:2w9,18:1w9c,18:1w9t in No.1 wild ginseng root zone was not increased and was decreased. The experiment result was different from all the results of the previous. Three principal components were screened out with the principal component analysis,represented 81.03% and 85.44% of the information of diversity. Among the three,PC1 explained 36.54% and 39.09% of the variation,PC2 explained 28.65% and 29.91%,PC3 explained 15.83% and 16.44%,which helped successfully distinguish root zone from control in the principal components scores charts. This was probably the reason why the wild ginseng could grow health long term.