Claim · model-written summary
NH4+ treatment increased nitrate reductase by 28-125%.
- Taxon
- Pteris vittata
Pteris vittatat0 - Treatment
- NH 4 + treatmente1
- Gene
- nitrate reductasee1
- Outcome
- nitrate reductasee1
- Direction
- increasese1
- Value
- 28–125%e1
- Comparator
- 0.2X HNS controle0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pteris vittata”
e0“0.2X HNS control”
e1“NO 3 ⁻ enhanced N assimilation via nitrate reductase, glutamine synthetase, and free amino acids by 61–157%, 24–65%, and 1.6–5.7 fold, the corresponding increases for NH 4 + treatment were 28–125%, 23%, and 2.8-fold”
Title
Qishang Zhou; Runmin Jin; Hao Zhang; et al. Journal of Hazardous Materials 2026. doi:10.1016/j.jhazmat.2026.142594
Other claims from this paper (14)
- Intervention effect Plant biomass was greater in the 0.2X HNS control than in P. vittata treated with 3.0 mM NO3- or NH4+.
- Intervention effect NO3- and NH4+ treatments increased frond As content by 89-113% relative to the 0.2X HNS control.
- Intervention effect NO3- and NH4+ treatments increased frond P content by 39-76% relative to the 0.2X HNS control.
- Intervention effect NO3- enhanced N assimilation via nitrate reductase by 61-157%.
- Intervention effect NO3- enhanced glutamine synthetase by 24-65%.
- Intervention effect NO3- increased free amino acids by 1.6-5.7 fold.
- Intervention effect NH4+ treatment increased glutamine synthetase by 23%.
- Intervention effect NH4+ treatment increased free amino acids by 2.8-fold.
- Intervention effect Both NH4+ and NO3- promoted greater As/P uptake and translocation in P. vittata.
- Intervention effect NH4+ and NO3- treatments were associated with 1.3-2.4 fold upregulation of P-transporters PvPht1;2/1;4 and the AsIII-antiporter PvACR3;1.
- Intervention effect NO3- showed greater arsenate reduction and detoxification via 1.4-2.1 fold upregulation of AsV-reductase PvHAC1 and AsIII-antiporters PvACR3/3;2.
- Intervention effect NO3- is more effective than NH4+ in enhancing As accumulation in P. vittata.
- Mechanism The greater As accumulation with nitrate is related to improved N assimilation and As metabolism.
- Recommendation The authors suggest nitrate application could improve phytoremediation of As-contaminated sites using P. vittata.