| Autor: |
Lino IAN; Programa de Pós-Graduação em Biologia de Fungos, Universidade Federal de Pernambuco, Departamento de Micologia, Av. Prof. Moraes Rego, s/n, Cidade Universitária, 50740-600 Recife, PE, Brazil., Silva DKAD; Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Centro de Ciências Aplicadas e Educação, Departamento de Engenharia e Meio Ambiente, Campus IV, Conj. Pres. Castelo Branco III, 58297-000 Rio Tinto, PB, Brazil., Martins LMV; Universidade do Estado da Bahia/UNEB, Departamento de Tecnologia e Ciências Sociais-DTCS, Campus III, Rua Edgar Chastinet, s/n, São Geraldo, 48900-000 Juazeiro, BA, Brazil., Maia LC; Programa de Pós-Graduação em Biologia de Fungos, Universidade Federal de Pernambuco, Departamento de Micologia, Av. Prof. Moraes Rego, s/n, Cidade Universitária, 50740-600 Recife, PE, Brazil., Yano-Melo AM; Programa de Pós-Graduação em Biologia de Fungos, Universidade Federal de Pernambuco, Departamento de Micologia, Av. Prof. Moraes Rego, s/n, Cidade Universitária, 50740-600 Recife, PE, Brazil.; Universidade Federal do Vale do São Francisco, Colegiado de Zootecnia, Campus de Ciências Agrárias, Rodovia BR-407, Km 12, Lote 543, s/n, 56300-990 Petrolina, PE, Brazil. |
| Abstrakt: |
In this study, the effect of microbial inoculants and fertilizer application on cowpea (BRS Pujante) growth and on the structure and composition of arbuscular mycorrhizal fungi (AMF) assemblages were evaluated. A completely randomized experiment was set up involving 17 treatments: four with AMF, three with nodulating bacteria, six with AMF + nodulating bacteria, two with phosphorus, one with nitrogen and one control (reference) in five replicates. Plant growth and nutritional content, mycorrhizal colonization, glomerospores number, spore-based AMF assemblages and ecological indices were evaluated. Mycorrhizal inoculants associated with Bradyrhizobium BR3267 strain were more effective than the Microvirga BR3296 strain. Multidimensional scaling analysis showed that Acaulospora longula treatments were more similar among themselves, and distinct from the other treatments. A difference was observed in the structure of AMF community assemblage between treatments with G. albida + Bradyrhizobium BR 3267 and A. longula, with greater Shannon diversity and Pielou equitability indices in the first treatment and greater dominance in the treatment with A. longula only. Long-term studies are required to determine if the successful establishment of A. longula among indigenous species persists over time and if its dominant behavior is not deleterious to the AMF native community. |
