Abstract
A study on the composition and physiology of the microbiota of soils subjected to vinasse irrigation may be important in the discovery of products of biotechnological interest, since this residue increases microbial activity in the environments where it is applied. The objective of this work was to carry out the molecular characterization, through the sequencing of the 16S rRNA gene of four bacterial isolates obtained from sugarcane agricultural soils with vinasse management, as well as to evaluate the phosphate solubilization capacity and to relate the results with good practices in agriculture. Isolate LGA01-EV05 showed high sequence similarity with Curtobacterium albidum. The isolate LGA02-EV08 shows similarity with Brevibacillus nitrificans, the isolates LGA03-V20B and LGA04-V20G showed a high degree of similarity among themselves and with Sinomonas soli. Regarding the potential for phosphate solubilization, the four isolates demonstrated efficiency for this function. It was observed that there was no statistical difference between the LGA02-EV08 and LGA04-V20G groups, being the best solubilizing bacteria, with a yield about four times higher than the LGA03-V20B group, the worst among those analyzed.
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