PJB-2018-751
MEDICAL METABOLITES OF ARTEMISIA ANNUA L. AND SOIL MICROBES ALONG ALTITUDINAL GRADIENT IN GUIZHOU KARST TERRAINS OF CHINA
SHI-QIONG LUO
Abstract
The soil microbes play important roles in biochemical processes of plant-soil-microbe ecosystem. However, the correlation of herbal plants mediated by the plant medical metabolites and the soil microbes is little known. We investigated linkages of mainly medical metabolites of Artemisia annua L. with soil microbial biomass (SMB) and diversity based on analysis of the phospholipids fatty acids (PLFAs) at 18 sites (54 plots) from 420 to 1420 m altitude in Guizhou karst topography of China. Our results showed that SMB and diversities (Shannon, Evenness and Simpson indexes) significantly linearly increased along the altitude gradient. The content of artemisinin significantly linearly increased with increasing altitude. The content of artemisinic acid and total phenolics significantly linearly decreased with the increasing altitude. And SMB was significantly positively correlated to artemisinin and negatively related with total phenolics. Our results offer basic data to answer the critical question linking medical metabolites of A. annua and the soil microbes, more importantly, provide insight of linkage between metabolites of other plant and soil microbes.
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