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Nitrate Enhances Cadmium Accumulation Through Modulating Sulfur Metabolism in Sweet Sorghum by Jiawen Wu; Na Zhao; Pan Zhang; Lin Zhu; Yuan Lu; Xin Lei; Zhenqing Bai is a Environmental Science article available to read on EtoBox.

What is Nitrate Enhances Cadmium Accumulation Through Modulating Sulfur Metabolism in Sweet Sorghum about?

Sweet sorghum deploys tremendous potential for phytoremediation of cadmium (Cd)-polluted soils. Nitrate increases Cd accumulation in sweet sorghum, but the mechanism underlying this is still elusive. Sulfur-containing metabolites have been corroborated to play important roles in Cd tolerance in plants. Thus, whether sulfur metabolism contributed to nitrate-increased Cd accumulation in sweet sorghum was investigated in the present study. Two-way ANOVA analysis showed that most sulfur-containing metabolites concentrations and relevant enzymes activities were regulated by nitrate, Cd and interplay of nitrate and Cd. By using grey correlation analysis and Pearson correlation coefficient, Cd accumulation in shoots as affected by nitrate was also mainly ascribed to sulfur metabolism. ATP sulfurylase (ATPS) activities and non-protein thiol (NPT) concentrations in leaves were the two prominent factors that positively correlated with Cd accumulation in shoots. Excess nitrate elevated ATPS activities in leaves which contributed to increased NPT and phytochelatins (PCs) concentrations in leaves. Nitrate enhanced Cd accumulation in shoots of sweet sorghum under a low level of Cd treatment. Int

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Author

Jiawen Wu; Na Zhao; Pan Zhang; Lin Zhu; Yuan Lu; Xin Lei; Zhenqing Bai

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)