Title:	Does the Bradyrhizobium pachyrhizi BR 3262 elite strain overcome the native established soil rhizobial population on cowpea nodules occupation?.
Authors:	SANTOS, J. W. M. dos PÉREZ MARIN, A. M. LEITE, J. MARTINS, L. M. V. RIBEIRO, P. R. de A. FERNANDES JUNIOR, P. I.
Affiliation:	JONNATHAN WHINY MORAES DOS SANTOS, UNIVERSIDADE FEDERAL DA PARAÍBA; ALDRIN MARTIN PÉREZ MARIN, INSTITUTO NACIONAL DO SEMIÁRIDO; JAKSON LEITE, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO PARÁ; LINDETE MÍRIAN VIEIRA MARTINS, UNIVERSIDADE DO ESTADO DA BAHIA, DEPARTAMENTO DE TECNOLOGIA E CIÊNCIAS SOCIAIS; PAULA ROSE DE ALMEIDA RIBEIRO, FUNDAÇÃO DE AMPARO À CIÊNCIA E TECNOLOGIA DO ESTADO DE PERNAMBUCO; PAULO IVAN FERNANDES JUNIOR, CPATSA.
Date Issued:	2024
Citation:	Pesquisa Agropecuária Tropical, v. 54, e79675, 2024.
Description:	Cowpea (Vigna unguiculata L. Walp.) is a promiscuous crop, nodulating with a wide range of rhizobia strains native to the soil, what often leads to low inoculation responses with selected rhizobia, reducing the efficiency of introduced inoculants. This study aimed to assess the nodule occupancyof the Bradyrhizobium pachyrhizi BR 3262 elite strain in two cowpea genotypes (BRS Pujante and BRS Acauã), in soil with established rhizobial population (higher than 103 g-1 of soil), in a greenhouse. For the BR 3262 nodule occupancy, a strain-specific PCR approach was applied, assessing all the 1,237 nodules obtained from the root crown and the entire root (secondary roots) regions of the inoculated plants. The BR 3262 inoculation increased the root dry mass and nodulation, but not the shoot dry mass. Both genotypes showed a nodular occupancy above 80 % in the crown and secondary roots, indicating a high competitiveness and persistence in the soil.
Thesagro:	Vigna Unguiculata Bactéria Feijão
NAL Thesaurus:	Cowpeas Nodulation Bacterial contamination
Keywords:	Fixação biológica de nitrogênio Competitividade de rizóbios Bactérias nodulantes Bradyrhizobium pachyrhizi Estipe Feijão caupi
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)