Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2348 - 2348

Published: Oct. 11, 2024

The contamination of soil with the heavy metal cadmium (Cd) is increasingly prominent and severely threatens food security in China. Owing to its low cost, suitable efficacy, ability address shortcomings plant remediation by enhancing plants take up Cd, plant–microbe combination technology has become a research hotspot pollution remediation. A pot experiment was performed examine effects inoculation plant-growth-promoting bacterium Brevibacillus sp. SR-9 on biomass, Cd accumulation, nutrients hybrid Pennisetum. purpose this study determine how alleviates stress caused contamination. High-throughput sequencing metabolomics were used bacterial community composition microbial metabolic functions associated results suggest that mutation effectively stress, leading increased biomass accumulation aboveground root weight 12.08% 27.03%, respectively. Additionally, sections roots 21.16% 15.50%, Measurements physicochemical properties revealed strain slightly levels available phosphorus, total nitrogen, potassium. DNA implantation modified increasing average number Actinobacteria Bacillus. nitrogen content positively correlated abundance, phosphorus level, level. Metabolomic analysis affected abundance metabolites, 59 differentially abundant metabolites identified (p < 0.05). Among these, 14 presented whereas 45 decreased abundance. Fourteen pathways enriched these metabolites: folate resistance pathway, ABC transporter D-glutamine D-glutamic acid metabolism, purine pyrimidine metabolism. potassium, nitrogen. According correlation analyses, development Pennisetum are strongly which also impact certain populations. This work altering makeup communities their processes, bacteria promote can mitigate Cd. These findings reveal microbiological mechanisms through increase present contaminated soils.

Language: Английский