Abstract
In this study, 14 strains of A. chroococcum isolated from wheat grown fields around the city of Tabriz, in northwest of Iran, were assayed for siderophore production using chrome azurol-S agar (CAS-agar) method under in-vitro conditions. Results showed that some strains had relatively higher ability in siderophore production. In a pot culture experiment with sterile soil, wheat plants (Triticum aestivum L.CV. Falat ) were inoculated with 14 bacterial strains. Positive control received nitrogen fertilizer without bacterial inoculation and negative control was left un-inoculated and without N- fertilizer. Totally, 16 treatments with four replications were arranged in completely randomized design. Concentartions and contents of Fe, Cu, Zn and Mn in shoot and root as well as translocations of these elements from root to the shoot were determined at the harvest time. Results showed that the inoculation with Azotobacter had significant effects on concentrations and contents of Fe, Zn and Cu in shoot and root. Translocations of Fe, Zn and Cu from root to the shoot were markedly increased in bacterial treatments compared to the positive and negative controls. Mn concentration and content as well as its translocation from root to the shoot were not significantly affected. In-vitro assessment of siderophore production revealed that the higher siderophore production in bacterial stains was in accordance with higher Fe in plant tissue and its translocation as well.
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Claims 4
Claim · model-written summary
Azotobacter inoculation significantly affected iron, zinc and copper concentrations and contents in wheat shoots and roots.
- Taxon
- Triticum aestivum
Triticum aestivume1 - Treatment
- inoculation with Azotobactere0
- Interactor
- Azotobacter
Azotobactere0symbiont - Outcome
- concentrations and contents of Fe, Zn and Cu in shoot and roote0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the inoculation with Azotobacter had significant effects on concentrations and contents of Fe, Zn and Cu in shoot and root”
e1“wheat plants (Triticum aestivum L.CV. Falat ) were inoculated with 14 bacterial strains”
Claim · model-written summary
Bacterial inoculation markedly increased iron, zinc and copper translocation from wheat roots to shoots relative to both controls.
- Taxon
- Triticum aestivumTriticum aestivume1
- Treatment
- bacterial treatmentse0
- Interactor
- AzotobacterAzotobactere2symbiont
- Outcome
- Translocations of Fe, Zn and Cu from root to the shoote0
- Direction
- markedly increasede0
- Comparator
- positive and negative controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Translocations of Fe, Zn and Cu from root to the shoot were markedly increased in bacterial treatments compared to the positive and negative controls.”
e1“wheat plants (Triticum aestivum L.CV. Falat ) were inoculated with 14 bacterial strains”
e2“inoculation with Azotobacter”
Claim · model-written summary
Bacterial inoculation did not significantly affect manganese concentration, content or root-to-shoot translocation in wheat.
- Taxon
- Triticum aestivumTriticum aestivume1
- Treatment
- inoculation with Azotobactere2
- Interactor
- AzotobacterAzotobactere2symbiont
- Outcome
- Mn concentration and content as well as its translocation from root to the shoote0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mn concentration and content as well as its translocation from root to the shoot were not significantly affected.”
e1“wheat plants (Triticum aestivum L.CV. Falat ) were inoculated with 14 bacterial strains”
e2“inoculation with Azotobacter”
Claim · model-written summary
Higher bacterial siderophore production corresponded to higher iron in wheat tissue and greater iron translocation.
- Taxon
- Triticum aestivumTriticum aestivume1
- Interactor
- AzotobacterAzotobactere2symbiont
- Outcome
- Fe in plant tissue and its translocatione0
- Direction
- highere0
- Qualifier
- higher siderophore productione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the higher siderophore production in bacterial stains was in accordance with higher Fe in plant tissue and its translocation as well”
e1“wheat plants (Triticum aestivum L.CV. Falat ) were inoculated with 14 bacterial strains”
e2“inoculation with Azotobacter”
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