Abstract
The biotechnological manipulation of phosphate-solubilizing bacteria (PSB) is gaining prominence to improve the poor phosphorus (P) availability in the soil and maintain crop yields. In this study, we investigated how Rhizobium sp. B02 inoculation influences maize crop development and whether its use reduces phosphate fertilizer rates. We conducted growth promotion assays using P fertilizer doses in two maize genotypes under greenhouse conditions. Morphometric, physiological, and productivity parameters were assessed in three phenological stages: tillering (V5), tassel (VT), and maturity (R6). Maize response was significantly influenced by both inoculation and plant genotype, showing that the plant-promoting effect of inoculation is substantially more prominent in the white endosperm than in the yellow endosperm maize genotype. The development of maize in all phenological stages was promoted by inoculation with Rhizobium sp. B02. The most significant influence of inoculation was observed on shoot dry weight, relative chlorophyll content, shoot P concentration, leaf area, photosynthetic rate, 1,000-grain weight, and grain yield. A 17% gain in grain yield, representing 20 g plant −1 , was obtained by inoculation with 50% diammonium phosphate (DAP) compared with the control treatment at the same dose. The complete fertilization control was phenocopied by the white endosperm inoculated at 50% DAP in all productivity parameters. Therefore, half of the P fertilization in white endosperm was replaced by inoculation with Rhizobium sp. B02. Herein, we report the potential of a Rhizobium strain in a non-legume crop to improve P management.
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Claims 6
Claim · model-written summary
The inoculation growth benefit was more prominent in white than yellow endosperm maize.
- Material
- white endosperme0
- Treatment
- inoculatione0
- Interactor
- Rhizobium sp. B02e1symbiont
- Outcome
- plant-promoting effecte0
- Direction
- more prominente0
- Comparator
- yellow endosperm maize genotypee0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the plant-promoting effect of inoculation is substantially more prominent in the white endosperm than in the yellow endosperm maize genotype”
t0“Maize”
e1“Rhizobium sp. B02 inoculation”
Claim · model-written summary
Rhizobium inoculation promoted maize development at all phenological stages.
- Treatment
- inoculation with Rhizobium sp. B02e0
- Interactor
- Rhizobium sp. B02e0symbiont
- Outcome
- development of maizee0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The development of maize in all phenological stages was promoted by inoculation with Rhizobium sp. B02.”
Claim · model-written summary
Inoculation most strongly influenced shoot dry weight and leaf area.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most significant influence of inoculation was observed on shoot dry weight, relative chlorophyll content, shoot P concentration, leaf area, photosynthetic rate, 1,000-grain weight, and grain yield.”
t0“Maize”
e1“Rhizobium sp. B02 inoculation”
Claim · model-written summary
Inoculation most strongly influenced chlorophyll, shoot P and photosynthetic rate.
- Treatment
- inoculatione0
- Interactor
- Rhizobium sp. B02e1symbiont
- Outcome
- relative chlorophyll content, shoot P concentratione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most significant influence of inoculation was observed on shoot dry weight, relative chlorophyll content, shoot P concentration, leaf area, photosynthetic rate, 1,000-grain weight, and grain yield.”
t0“Maize”
e1“Rhizobium sp. B02 inoculation”
Claim · model-written summary
Inoculation at 50% DAP raised grain yield by 17%, or 20 g plant −1, against the same-dose control.
- Treatment
- inoculation with 50% diammonium phosphate (DAP)e0
- Interactor
- Rhizobium sp. B02e1symbiont
- Outcome
- grain yielde0
- Direction
- gaine0
- Value
- 17%e0
- Qualifier
- 20 g plant −1e0
- Comparator
- control treatment at the same dosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 17% gain in grain yield, representing 20 g plant −1 , was obtained by inoculation with 50% diammonium phosphate (DAP) compared with the control treatment at the same dose.”
t0“Maize”
e1“Rhizobium sp. B02 inoculation”
Claim · model-written summary
White endosperm maize inoculated at 50% DAP matched fully fertilized controls on productivity parameters.
- Material
- white endosperme0
- Treatment
- inoculated at 50% DAPe0
- Interactor
- Rhizobium sp. B02e1symbiont
- Outcome
- all productivity parameterse0
- Direction
- phenocopiede0
- Comparator
- complete fertilization controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The complete fertilization control was phenocopied by the white endosperm inoculated at 50% DAP in all productivity parameters.”
t0“Maize”
e1“Rhizobium sp. B02 inoculation”
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