Root excretion and plant tolerance to cadmium toxicity - a review
By J. Dong, W. Mao, G. Zhang, Fei-bo Wu, Y. Cai. 2018
143 citations recorded by the source corpus.
Significant quantities of Cd have been added to soils globally due to various anthropogenic activities, posing a serious threat to safe food production and human health. Rhizosphere, as an important interface of soil and plant, plays a significant role in the agro-environmental system. This article presents a review of relationship between root excretion and microorganisms and plant resistance to Cd toxicity and possible mechanisms. Root exudates markedly altered in species and quantity under Cd stress. Root exudates can affect Cd absorption by plants through changing the physical and chemical characteristics of rhizospheres. The influence of root exudates on Cd bioavailability and toxicity may include modifying the rhizosphere pH and Eh, chelating/complexing and depositing with Cd ions, and altering the community construction, the numbers and activities of rhizospheric microbes. In this paper, the methods to reduce the transfer of Cd in soil-plant system by adjusting rhizosphere environment are discussed, and some aspects are also proposed that should be emphasized in the future research work.
Subfields: Plant Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/ac7b732e7b7d4c64b25b49c0bf731149d4c7f81a
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Citations in the corpus
- The role of organic acids in heavy metal tolerance in plants (2018, background): “…forms of metals in the rhizosphere and increased competition of H+ and metal ions for the adsorption sites on the cell walls of the roots (Dong et al., 2007), as well as with the formation of less bioavailable chelate complexes, which ultimately contributes to increased tolerance of…”
- Heavy metal detoxification and tolerance mechanisms in plants: Implications for phytoremediation (2016, background): “, and the inorganic ligands include Cl−, SO4, NH4, CO3, and PO4 (Dong et al. 2007).”