Comparative metagenomic analysis of rhizospheric soil of Mangifera indica (mango) and Carica papaya (papaya)

Plants rely on soil for their nutritional demands and shape the microbiome of surrounding soil through metabolic interactions. Though amplicon sequencing, this study examines the metabolic pathways and microbial communities associated with rhizospheres of Carica papaya (papaya) and Mangifera indica (mango). Significant variations in the microbial compositions and related metabolic functions between the two environments were observed.Proteobacteria and Actinobacteria were among the common microbial phyla found in both rhizospheres; however, their relative abundances differed, suggesting microbial interactions particular to individual plants. Proteobacteria (32.36%), Actinobacteria (8.67%), Crenarchaeota (9.41%), and Firmicutes (6.25%) were the most common phyla in the rhizosphere of mangos, while Proteobacteria (33.86%), Actinobacteria (9.71%), Crenarchaeota (8.25%), and Firmicutes (6.85%) dominated the papaya rhizosphere. The mango rhizosphere had unique genera such as Algoriphagus and Salinarimonas, while the papaya rhizosphere contained Mycobacterium, Nitrospira, Skermanella, Thalassobaculuma and Haloferula. Mango soil displayed a heightened abundance of pathways related to xenobiotic degradation and lipopolysaccharide biosynthesis, reflecting distinct microbial interactions and metabolic activities. In contrast, papaya soil showed enrichment in pathways related to photosynthesis and oxidative phosphorylation, implying increased energy production.