Polyphasic characterization of nitrogen-fixing and co-resident bacteria in nodules of Phaseolus lunatus inoculated with soils from Piauí State, Northeast Brazil

Amaral Machaculeha Chibeba, Claudiana Silva Pereira, Jadson Emanuel Lopes Antunes, Renan Augusto Ribeiro, Ângela Célis de Almeida Lopes, Regina Lúcia Ferreira Gomes, Mariangela Hungría, Ademir Sérgio Ferreira de Araújo