Stability of phenolic acids and the effect on weed control activity

Li, Jiayu; Zhang, Qi; Hu, Wenwen; Yang, Xiaoyan; He, Haibin

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자료유형: 학술저널

저자정보: Li, Jiayu (Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, and Agroecological Institute/School of Life Sciences, Fujian Agriculture and Forestry University) Zhang, Qi (Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, and Agroecological Institute/School of Life Sciences, Fujian Agriculture and Forestry University) Hu, Wenwen (Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, and Agroecological Institute/School of Life Sciences, Fujian Agriculture and Forestry University) Yang, Xiaoyan (Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, and Agroecological Institute/School of Life Sciences, Fujian Agriculture and Forestry University) He, Haibin (Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, and Agroecological Institute/School of Life Sciences, Fujian Agriculture and Forestry University)

저널정보: 한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제58권 제6호

발행연도: 2015.1

수록면: 919 - 926 (8page)

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연구배경

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Phenolic acid is a very important class of allelochemicals with allelopathic weed control activity. In this study, three benzoic acid derivatives (syringic, 4-hydroxybenzoic, and vanillic acids), three cinnamic acid derivatives (cinnamic, 4-hydroxycinnamic, and ferulic acids) were tested, and high-performance liquid chromatography was used to conduct a dynamic analysis on the changes in the concentration of phenolic acids in a bioassay based on the initial concentration and test time. The results showed that the concentration of individual phenolic acids and a solution of mixed phenolic acids decreased to a certain extent irrespective of environment, i.e., bioassay (4-7 days) or a ricegrowing environment, and a significant decrease in concentration was measured after 48 h. Based on the above results, the laboratory bioassay was conducted using a fresh solution of phenolic acids every 48 h. The results showed that the instability of phenolic acid could affect its weed control activity, and this effect was more significant for high concentrations of phenolic acids. On the other hand, changing the solution did not have a significant impact on the weed control activity of phenolic acids in the natural environment (pH 6.50), in which allelopathic rice release phenolic acids. These results reveal the instability of phenolic acids could significantly reduce the inhibition rate on the growth index for receptor plants in an indoor bioassay.

#Allelopathy #Bioassays #Dynamic analysis #High-performance liquid chromatography #Phenolic acids

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