Abstract
Soybeans and nitrogen-fixing bacteria have evolved complex symbiotic relationships to form nodules that fix nitrogen from the atmosphere, providing for host plants. In this study, the effects of different concentrations of Fe-catalyzed artificial humic acid liquid fertilizer (Fe-AHA) on soybean growth were investigated. Compared with commercially available Fe fertilizer, Fe-AHA 20 treatment significantly increased the shoot and nodule biomass of soybean by 16.24 % and 22.68 %, and increased the content of nodule ureide by 47.97 % and the activity of nitrogenase by 25.57 %. The transcriptomic and metabolomic analyses showed that Fe-AHA 20 promoted nodule carbon assimilation to provide more energy for nitrogen fixation, activated antioxidant system to eliminate excess reactive oxygen species, and regulated the expression of signaling factors to promote nodule development. Fe-AHA 20 also increased soybean yields by 27.56 % compared to Fe-EDTA and improved the nutritional quality of seeds. Our study provides an effective strategy for promoting soybean growth and improving soybean yield and quality. • Foliar spraying of Fe-catalyzed AHA could effectively supplement iron in soybean. • Fe-catalyzed AHA can improve the nitrogen fixation ability of soybean, promote soybean growth and increase soybean yield. • Transcriptomics and metabolomics were used to analyze the mechanism of Fe-catalyzed AHA promoting soybean growth.
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Claims 10
Claim · model-written summary
Fe-AHA 20 significantly increased soybean shoot biomass by 16.24 % compared with commercial Fe fertilizer.
- Taxon
- soybean
Glycine maxe1 - Organ / stage
- shoote1
- Treatment
- Fe-AHA 20e0
- Outcome
- biomasse1
- Direction
- increasede0
- Value
- 16.24 %e1
- Comparator
- commercially available Fe fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with commercially available Fe fertilizer, Fe-AHA 20 treatment significantly increased”
e1“shoot and nodule biomass of soybean by 16.24 %”
Claim · model-written summary
Fe-AHA 20 significantly increased soybean nodule biomass by 22.68 % compared with commercial Fe fertilizer.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- nodulee1
- Treatment
- Fe-AHA 20e0
- Outcome
- biomasse1
- Direction
- increasede0
- Value
- 22.68 %e1
- Comparator
- commercially available Fe fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with commercially available Fe fertilizer, Fe-AHA 20 treatment significantly increased”
e1“nodule biomass of soybean by 16.24 % and 22.68 %”
Claim · model-written summary
Fe-AHA 20 increased nodule ureide content by 47.97 % compared with commercial Fe fertilizer.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Fe-AHA 20e0
- Outcome
- content of nodule ureidee1
- Direction
- increasede1
- Value
- 47.97 %e1
- Comparator
- commercially available Fe fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with commercially available Fe fertilizer, Fe-AHA 20 treatment significantly increased”
e1“increased the content of nodule ureide by 47.97 %”
t0“soybean”
Claim · model-written summary
Fe-AHA 20 increased nitrogenase activity by 25.57 % compared with commercial Fe fertilizer.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Fe-AHA 20e0
- Outcome
- activity of nitrogenasee1
- Direction
- increasede1
- Value
- 25.57 %e1
- Comparator
- commercially available Fe fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with commercially available Fe fertilizer, Fe-AHA 20 treatment significantly increased”
e1“increased the content of nodule ureide by 47.97 % and the activity of nitrogenase by 25.57 %”
t0“soybean”
Claim · model-written summary
Fe-AHA 20 increased soybean yield by 27.56 % compared with Fe-EDTA.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fe-AHA 20e0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 27.56 %e0
- Comparator
- Fe-EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fe-AHA 20 also increased soybean yields by 27.56 % compared to Fe-EDTA”
Claim · model-written summary
Fe-AHA 20 improved the nutritional quality of soybean seeds compared with Fe-EDTA.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Fe-AHA 20e0
- Outcome
- nutritional quality of seedse0
- Direction
- improvede0
- Comparator
- Fe-EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fe-AHA 20 also increased soybean yields by 27.56 % compared to Fe-EDTA and improved the nutritional quality of seeds”
Claim · model-written summary
Transcriptomic and metabolomic analyses indicated that Fe-AHA 20 promoted nodule carbon assimilation to supply energy for nitrogen fixation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Fe-AHA 20e0
- Outcome
- nodule carbon assimilatione0
- Direction
- promotede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fe-AHA 20 promoted nodule carbon assimilation to provide more energy for nitrogen fixation”
t0“soybean”
Claim · model-written summary
Fe-AHA 20 activated the antioxidant system to eliminate excess reactive oxygen species in nodules.
- Taxon
- soybeanGlycine maxt0
- Outcome
- antioxidant systeme0
- Direction
- activatede0
- Qualifier
- eliminate excess reactive oxygen speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“activated antioxidant system to eliminate excess reactive oxygen species”
t0“soybean”
Claim · model-written summary
Fe-AHA 20 regulated the expression of signaling factors to promote nodule development.
- Taxon
- soybeanGlycine maxt0
- Outcome
- expression of signaling factorse0
- Direction
- regulatede0
- Qualifier
- promote nodule developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“regulated the expression of signaling factors to promote nodule development”
t0“soybean”
Claim · model-written summary
Foliar spraying of Fe-catalyzed AHA could effectively supplement iron in soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Foliar spraying of Fe-catalyzed AHAe0
- Outcome
- supplement irone0
- Direction
- supplemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spraying of Fe-catalyzed AHA could effectively supplement iron in soybean”
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