The influence of Liao Festival on the microbial community of the surrounding soil of ancient ivory in Sanxingdui
The burning marks from Liao Festival with the black ash on the surface of the ancient ivory un-earthed from the sacrificial Pit 4 are conspicuous.To understand the impact of black andisols on the preserva-tion of ancient ivory,this study compared the physicochemical properties of the black andisols with the control of unburned loess and conducted the high-throughput sequencing and multi-omics analysis on their microbial community.The results showed that the moisture and organic carbon content in the andisols were significantly higher than those in the loess(P<0.05).High throughput sequencing showed that Proteobacteria and Basid-iomycota were dominant in both andisols and loess,while the former contained the higher abundance of bacte-rial genera Methylotenera,Flavobacterium,and Acidovoorax,as well as fungal genera Mortierella,Penicil-lium,and Aspergillus.Metabolomics analysis showed that the organic acids,including L-malic acid and pan-tothenic acid,in andisols were significantly lower than those in loess,while oxalic acid,the more corrosive acid to ancient ivory,was significantly higher than that in loess(P<0.05).Accordingly,burning in the sacri-ficial pits caused the significant changes in soil physical and chemical properties,resulting in higher moisture and organic carbon content in andisols,as well as lower pH,which might bring about the change of the struc-ture and composition of the microbial community and the increase of oxalic acid produced,eventually raising the risk of ancient ivory corrosion.
国家科技期刊平台
NSTL
万方数据
