Claim · model-written summary
Under long-term Cd exposure, silicon promoted phytochelatin 2 and phytochelatin 3 synthesis in cytosol.
- Taxon
- rice
Oryza sativae0 - Treatment
- Sie6
- Outcome
- phytochelatin 2 (PC2) and phytochelatin 3 (PC3) synthesis in cytosole6
- Direction
- promotede6
- Qualifier
- Under long-term Cd exposuree6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of Si on subcellular distribution of Cd in rice roots”
e6“Under long-term Cd exposure, Si promoted phytochelatin 2 (PC2) and phytochelatin 3 (PC3) synthesis in cytosol, at the same time, Si down-regulated the expression of the Cd efflux-related protein multidrug resistance-associated protein-like ATP-binding cassette transporters (MRP-like ABC transporters) and limited Cd transportation from vacuole to cytosol”
Title
Wei Wei; Hua Peng; Yunhe Xie; et al. Ecotoxicology and Environmental Safety 2021. doi:10.1016/j.ecoenv.2021.112810
Other claims from this paper (13)
- Intervention effect Silicon decreased shoot Cd concentration in rice.
- Intervention effect Silicon had little impact on root Cd levels in rice.
- Intervention effect Under short-term Cd exposure, silicon increased the ratio of Cd in the root cell wall by 23.2~24.0%.
- Intervention effect Under short-term Cd exposure, silicon decreased the ratio of Cd in the root soluble fraction by 20.6~21.5%.
- Mechanism Silicon supply improves root retention of Cd by fixing it on the cell wall and restricting its intracellular transport.
- Observation Pectin, especially ionic-soluble pectin, of the cell wall is the main binding component for Cd in rice roots.
- Intervention effect Silicon supply induced more Cd accumulation in covalent-soluble pectin and hemicellulose.
- Mechanism Overexpression of germin-like proteins proved the role of the cell wall in moderating Cd toxicity in rice.
- Intervention effect Silicon down-regulated the expression of the Cd efflux-related protein MRP-like ABC transporters in rice.
- Intervention effect Silicon limited Cd transportation from vacuole to cytosol in rice.
- Mechanism Silicon limits Cd translocation by the root cell wall under short-term Cd exposure.
- Mechanism Silicon promotes vacuole compartmentalization to mitigate Cd toxicity under long-term exposure.
- Intervention effect Silicon does not reduce the absorption of Cd in rice roots.