02117naa a2200265 a 450000100080000000500110000800800410001902200140006002400550007410000160012924501360014526000090028152012690029065000280155965000310158765000130161865000250163165300270165670000170168370000230170070000200172370000180174370000160176177300740177721319512021-05-21       2021    bl uuuu     u00u1 u    #d  a0365-03407 ahttps://doi.org/10.1080/03650340.2021.19226722DOI1 aDIAS, A. C.  aComparison of N uptake of maize inoculated with two diazotrophic bacterial species grown under two N levels.h[electronic resource]  c2021  aWe investigated how plant inoculation with two diazotrophic bacteria would influence the modulation of root architecture and parameters associated with N uptake rate under high and low NO3 − availability. The treatments were arranged in a 2 × 3 factorial design, the first factor being N dose (0.3 and 3.0 mM, or low and high N, respectively) and the second being inoculation with Herbaspirillum seropedicae strain ZAE94 (Hs-ZAE94) , Azospirillum brasilense strain Sp245 (Ab-Sp245) and an uninoculated control. The parameters evaluated were: root architecture, mineral N in the growth solution, soluble metabolites, and activities of two N enzymes, dry mass, N accumulation, and the ratio of plant dry mass to N accumulation (NUE). Plant parameters improved with higher N availability. Only under high N, the inoculation with Ab-Sp245 brought about a change in root architecture with an improvement in root surface area, which was in agreement with an increased plant dry matter, N accumulation, and NUE, which was not always observed on either sampling date, 24 and 32 days after transfer to the hydroponic system. The shift in root architecture and the maintenance of N uptake per unit of root area by inoculation with Ab-Sp245 was likely the main effect.  aAzospirillum brasilense  aHerbaspirillum seropedicae  aNitrates  aZea mays subsp. mays  aPlant growth promoting1 aALVES, G. C.1 aSILVA, T. F. R. da1 aALVES, B. J. R.1 aSANTOS, L. A.1 aREIS, V. M.  tArchives of Agronomy and Soil Science, Published online: 17 May 2021.