The effect of different Chlormequat chloride concentrations on bacterial diversity in peanut soil

This study investigated the influence of different concentrations of chlormequat chloride on the diversity of soil bacteria in peanuts. Experimental data shows that with the increase of concentration, OTU shows a decreasing trend. The OTUs at low concentration (D, 6 g ai/ha), medium concentration (M, 9 g ai/ha), and high concentration (g, 12 g ai/ha) are 5583, 5430, and 3910, Respectively. At low concentrations of chlormequat chloride slightly affected the composition and relative abundance of soil bacterial communities, while high concentrations significantly inhibited the diversity. Specifically, under D treatment, the bacterial populations of Bacillus , Massilia , Gemmatimonas , Variovorax, Sphingomonas , and Arenimonos showed specific changes in abundance or activity. Under G treatment, a significant decrease in the number of bacterial species and a shift in dominant species were observed. The results demonstrated a clear concentration-dependent relationship between chlormequat chloride and soil bacterial diversity, highlighting the potential ecological impacts on the peanut soil ecosystem.These findings provide valuable insights for understanding the effects of chlormequat chloride on soil microbial environments and have important implications for sustainable agricultural practices.The results indicated that different concentrations of CC can enhance the richness and diversity of peanut rhizosphere microbial communities, with low concentrations indicating the most optimal effects.