Data/hora: 18/06/2024 18:22:48

Biblioteca(s): | Embrapa Semiárido.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 01/04/2021
Data da última atualização: | 06/09/2022
Autoria: | SILVA, V. B. da; BOMFIM, C. S. G.; SENA, P. T. S.; SANTOS, J. C. S.; MATTOS, W. da S.; GAVA, C. A. T.; SOUZA, A. P. de; FERNANDES JUNIOR, P. I.
Afiliação: | VALÉRIA BORGES DA SILVA; CLÁUDIA SILVA GOMES BOMFM; PÂMELLA THALITA SOUZA SENA; JÉSSICA CAROLINE SOUZA SANTOS; WESLEY DA SILVA MATTOS; CARLOS ALBERTO TUAO GAVA, CPATSA; ADAILSON PEREIRA DE SOUZA; PAULO IVAN FERNANDES JUNIOR, CPATSA.
Título: | Vigna spp. root-nodules harbor potential pathogenic fungi controlled by co-habiting bacteria.
Ano de publicação: | 2021
Fonte/Imprenta: | Current Microbiology, v. 78, n. 5, p. 1835-1845, 2021.
DOI: | https://doi.org/10.1007/s00284-021-02455-3
Idioma: | Inglês
Conteúdo: | This study aimed to isolate, identify, and evaluate the pathogenicity of nodule-borne fungi of asymptomatic Vigna spp. plants, grown in soils from preserved tropical dry forests (Caatinga) areas and identify the occurrence of co-habiting bacteria from these plants, and which have potential to control the co-occurring pathogenic fungi. Fungi and bacteria were isolated from three Vigna species (V. unguiculata, V. radiata, and V. mungo), grown in soil samples collected in fve preserved Caatinga areas (Northeastern, Brazil). All fungi and selected bacteria were phylogenetically characterized by the sequencing of ITS1-5.8S-ITS2, and the 16S rRNA gene, respectively. The pathogenicity of fungi in cowpea seeds germination was evaluated throughout the inoculation experiment in Petri dishes and pots containing sterile substrate. The potential of nodule-borne bacteria to control pathogenic fungi in cowpea was assessed in a pot experiment with a sterilized substrate by the coinoculation of fungi and bacteria isolated from the respective individual plants and soils. The 23 fungal isolates recovered were classifed within the genera Fusarium, Macrophomina, Aspergillus, Cladosporium, and Nigrospora. The inoculation of fungi in cowpea seeds reduced the emergence of seeds in Peti dishes and pots. Twenty-four bacteria (Agrobacterium sp., Bradyrhizobium sp., Bacillus sp., Enterobacter sp., Pseudomonas sp., Paraburkholderia sp., and Rhizobium sp.) inhibited the harmful efects of Macrophomina sp. and Fusarium sp., increasing the germination and emergency of potted cowpea plants, highlighting the strains Agrobacterium sp. ESA 686 and Pseudomonas sp. ESA 732 that controlled, respectively, the Fusarium sp. ESA 771 and Macrophomina sp. ESA 786 by 100 and 84.6% of efciency.
Palavras-Chave: | Fungos Nódulos; Variabilidade Genética.
Thesagro: | Bactéria; Feijão; Fungo.
Thesaurus Nal: | Cowpeas; Macrophomina; Vigna.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (59493-1) - UPC - AP - DD -  -  -  - DIS