| Congresso Brasileiro de Microbiologia 2023 | Resumo: 1219-1 | ||||
Resumo:The current agricultural advancements have focused on more sustainable methodologies, such as reducing the use of mineral nutrients and pesticides, as well as developing more productive cultivars and cultivation systems with low environmental costs. In this context, microorganisms in association with plants have become the focus of recent studies. The rhizosphere microbiome is essential for plant functioning, influencing its physiology and development. Although its importance is widely known, there is still not enough information about most rhizosphere microorganisms. Understanding the microorganisms present in the rhizosphere and the functions they perform is essential for promoting plant growth and health. In this context, this project aims to evaluate the effect of bacterial inoculation on the growth of bean plants (Phaseolus vulgaris L.) and its impact on the rhizosphere microbial community. For this purpose, bacterial strains previously isolated from bean plants were tested as inoculants and those that showed the best plant growth responses were evaluated for their effect on the rhizosphere community. The evaluation of the rhizosphere community was performed by sequencing the 16S rRNA gene for bacteria and ITS for fungi, correlating them with plant growth patterns. The obtained results showed that the inoculation of bacterial strains in the rhizosphere of common bean modulated its microbiome composition, abundance, diversity, and complexity of interactions, with a more pronounced effect on the bacterial community and a lesser impact on the fungal community. Additionally, the P. polymyxa strain presented the best results for plant nutrition and microbiome modulation. These findings suggest that the introduction of selected bacteria as inoculants can play a significant role in regulating the rhizosphere microbiome of beans, influencing its structure and dynamics. These insights into how inoculated bacteria affect the rhizosphere microbial community are valuable for advancing sustainable agriculture, opening possibilities for more efficient biotechnological strategies, and optimizing the growth and productivity of agricultural crops. Palavras-chave: Amplicon sequencing, Microbial ecology, Plant growth promotion Agência de fomento:CAPES; CNPq | |||||