Diversidade e potencial de solubilização de fosfato in vitro por bactérias endofíticas associadas à cultura da palma forrageira (Opuntia e Nopalea) em Pernambuco

Abstract

Diazotrophic bacteria present mechanisms that, when associated with the culture of forage Palm, can contribute to the growth and development of this plant in northeastern Brazil. Forage Palm is of great economic importance because it is the main animal feed in the semiarid region. The aim of this study was to characterize these endophytic bacteria in Palm plants regarding their ability to solubilize inorganic phosphate and compare their diversity in semiarid regions of Pernambuco state. We confirmed the presence of diazotrophs solubilizing inorganic phosphate associated with the coming of cultivated palm from the AGBs (Active Germplasm Bank) of Caruaru and Arcoverde. Diversity of diazotrophic bacteria was observed using the Shannon-Weaver diversity index. Analysis of the Pielou’s equitability index showed no dominance of bacteria in the regions studied.