BACTÉRIAS PROMOTORAS DE CRESCIMENTO COMO ATENUANTES DO ESTRESSE HÍDRICO NO MILHO

Abstract

Water stress is one of the abiotic factors that has the greatest impact on corn growth and productivity. One of the strategies to mitigate water stress in corn includes the use of Plant Growth Promoting Bacteria (BPCV). In view of the above, the objective was to survey the literature on the use of BPCV to mitigate drought in corn crops. Searches were carried out on journal websites and scientific communities, mainly the Capes Periodical Portal, Google Scholar and SciELO, considering scientific articles, electronic pages, technical reports, master's dissertations, doctoral theses and books, as sources of information. Data was collected from the last ten years from 2013 to 2023. Application of inoculants containing bacterial isolates can increase nitrogen fixation rates and alter the activity of nitrogen assimilation enzymes. The most representative interactions between BPCV and plants are those of the genera Rhizobium, Bacillus and Bradyrhizobium with leguminous plants. In this interaction, the roots form differentiated structures called nodules, whose main function is to provide a favorable environment for biological nitrogen fixation. Drought sometimes completely changes the morphology of a plant, with BPCV the tolerance of plants to drought can be improved to a great extent, which can impact not just one part of the plant, but help to mitigate the effects of drought on the plant as a whole. Gradually, the application of BPCV is a step towards sustainable agriculture.