ArticleFrontiers in plant science2025
A pyoverdine-based iron biochelate from bacterial secretions as an effective fertilizer under alkaline conditions.
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Salt/alkali‑tolerant Streptomyces luteus TRM 45540 improves pepper growth and soil quality in acidic and alkaline soils.BMC plant biology · 2026Article
- Molasses-amended siderophore biofertilizer reshapes the rhizosphere microbiome, promotes growth and reduces lipid peroxidation inFrontiers in plant science · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: Iron (Fe) deficiency in crops grown on calcareous soils seriously limits their productivity. The most common practice to address this issue is the application of Fe-chelates. However, more environmentally friendly methods are now being adopted. This study evaluated a pyoverdine-based siderophore extract from Methods: Stability batch tests and plant assays were conducted, including ferric chelate reductase (FCR) activity, ⁵⁷Fe-labeled uptake, phytotoxicity, and a hydroponic test with cucumber plants at two Fe levels (5 and 10 µM). Results and discussion: The Pvd/Fe³⁺ biofertilizer showed high stability at alkaline pH and resistance to Ca²⁺ interference. Although only a limited reduction of Pvd/Fe³⁺ by FCR was observed, Fe showed efficient translocation to shoots. Pvd/Fe³⁺ improved root morphology and biomass, and decreased reactive oxygen species, demonstrating biostimulant effects. At 10 µM, Pvd/Fe³⁺ provided Fe supply efficiency comparable to commercial HBED/Fe³⁺, and improved Fe/Mn ratio. These findings support the potential of Pvd/Fe³⁺-based formulations as dual-function biofertilizers and biostimulants.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.