ArticleFrontiers in plant science2019
Humic Substances Contribute to Plant Iron Nutrition Acting as Chelators and Biostimulants.
Article in Frontiers in plant science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 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
48 citing papers in PubMed, 228 citations in OpenAlex.
- Bioformulations of Entrophospora lutea enriched with biostimulants for growth promotion and control of Rhizoctonia root rot in lupine.Scientific reports · 2026Article
- Amino acid value-added urea reduces fertilizer-derived nitrogen loss in paddy soil by enhancing plant uptake, soil retention, and microbial turnover: Evidence fromScientific reports · 2026Article
- The Influence of Humic Substances and Auxin-Producing Bacteria onInternational journal of molecular sciences · 2026Article
- Enhanced phosphorus availability and uptake in Salvia miltiorrhiza associated with humic-induced changes in soil phosphorus fractions.Scientific reports · 2026Article
- Leonardite-derived humic substances enhance phosphorus use efficiency in lettuce through integrated physiological and metabolic reprogramming.Frontiers in plant science · 2026Article
- Effects of Bio-Slurry and Chemical Fertiliser Application on Soil Physicochemical Properties and Selected Heavy Metal Concentrations in Maize and Brassica Vegetables in Malawi.Environmental health insights · 2026Article
- Microbiome interventions combined with artificial humic acid treatments for restoring soil bacterial diversity.Sustainable microbiology · 2026Article
- Molecular determinants of humic and fulvic acids in enhancing micronutrient availability in calcareous soils: a comparative study on Fe, Mn, Zn, and Cu dynamics.Scientific reports · 2025Article
- Humic-like Substances Extracted from Hydrochar as an Additive for Foliar Fertilization in Tomato Plants.ACS omega · 2025Article
- Enhancing soil health through balanced fertilization: a pathway to sustainable agriculture and food security.Frontiers in microbiology · 2025Review
- Precise partial root-zone irrigation technique and potassium-zinc fertigation management improve maize physio-biochemical responses, yield, and water use in arid climate.BMC plant biology · 2024Article
- Impacts of cobalt and zinc on improving peanuts nutrient uptake, yield and irrigation water use efficiency under different irrigation levels.Scientific reports · 2024Article
- Humic acid improves wheat growth by modulating auxin and cytokinin biosynthesis pathways.AoB PLANTS · 2024Article
- Potassium humate and cobalt enhance peanut tolerance to water stress through regulation of proline, antioxidants, and maintenance of nutrient homeostasis.Scientific reports · 2024Article
- Next generation plant biostimulants & genome sequencing strategies for sustainable agriculture development.Frontiers in microbiology · 2024Review
- Foliar application of various biostimulants produces contrasting response on yield, essential oil and chemical properties of organically grown sage (Frontiers in plant science · 2024Article
- A lignin-derived material improves plant nutrient bioavailability and growth through its metal chelating capacity.Nature communications · 2023Article
- Supramolecular Arrangement of Lignosulfonate-Based Iron Heteromolecular Complexes and Consequences of Their Interaction with CaJournal of agricultural and food chemistry · 2023Article
- Understanding the Mechanisms of Fe Deficiency in the Rhizosphere to Promote Plant Resilience.Plants (Basel, Switzerland) · 2023Review
- Humic Substances as a Feed Supplement and the Benefits of Produced Chicken Meat.Life (Basel, Switzerland) · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Improvement of plant iron nutrition as a consequence of metal complexation by humic substances (HS) extracted from different sources has been widely reported. The presence of humified fractions of the organic matter in soil sediments and solutions would contribute, depending on the solubility and the molecular size of HS, to build up a reservoir of Fe available for plants which exude metal ligands and to provide Fe-HS complexes directly usable by plant Fe uptake mechanisms. It has also been shown that HS can promote the physiological mechanisms involved in Fe acquisition acting at the transcriptional and post-transcriptional level. Furthermore, the distribution and allocation of Fe within the plant could be modified when plants were supplied with water soluble Fe-HS complexes as compared with other natural or synthetic chelates. These effects are in line with previous observations showing that treatments with HS were able to induce changes in root morphology and modulate plant membrane activities related to nutrient acquisition, pathways of primary and secondary metabolism, hormonal and reactive oxygen balance. The multifaceted action of HS indicates that soluble Fe-HS complexes, either naturally present in the soil or exogenously supplied to the plants, can promote Fe acquisition in a complex way by providing a readily available iron form in the rhizosphere and by directly affecting plant physiology. Furthermore, the possibility to use Fe-HS of different sources, size and solubility may be considered as an environmental-friendly tool for Fe fertilization of crops.
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.