| Title: | Mobility and microbial activity of allelochemicals in soil |
| Author(s): | Li XJ; Xia ZC; Kong CH; Xu XH; |
| Address: | "College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The action of allelochemicals in soil needs their presence in the vicinity of the target plants. Using a soil TLC combined with bioassay approach, the mobility of 10 typical allelochemicals was evaluated. Ferulic, p-hydroxymandelic, p-hydroxybenzoic, and vanillic acids always had the lowest mobility (Rf < 0.1), whereas phenolic aldehyde and lactone (vanillin and coumarin) showed the highest mobility (Rf > 0.5). The Rf values of daidzein, 1alpha-angeloyloxycarotol, DIMBOA, and m-tyrosine ranged from 0.24 to 0.32. Binary mixtures of these allelochemicals led to an increase in mobility factors for selected combinations. Phospholipid fatty acid profiling indicated that there were different soil microbial communities in the segments containing allelochemicals residues in the developed TLC soil layer. A difference in microbial community structure occurred between two nitrogenous DIMBOA and m-tyrosine and another eight allelochemicals. The results suggest that the soil activity of allelochemicals on bioassay species and microbial communities depends on their mobility in soil" |
| Keywords: | Kinetics Pheromones/*chemistry/metabolism Plants/*chemistry/metabolism Soil/*chemistry *Soil Microbiology; |
| Notes: | "MedlineLi, Xiao-Jing Xia, Zhi-Chao Kong, Chui-Hua Xu, Xiao-Hua eng Research Support, Non-U.S. Gov't 2013/05/08 J Agric Food Chem. 2013 May 29; 61(21):5072-9. doi: 10.1021/jf400949m. Epub 2013 May 16" |
