Effect of Phosphorus Application on Arsenic Species Accumulation and Co-Deposition of Polyphenols in Rice Grain: Phyto and Food Safety Evaluation

Centre of Excellence in Rice Value Addition (CERVA), International Rice Research Institute (IRRI)—South Asia Regional Centre (ISARC), Varanasi 221106, India

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These authors contributed equally to this work.

Plants 2021, 10(2), 281; https://doi.org/10.3390/plants10020281

Received: 19 November 2020 / Revised: 24 December 2020 / Accepted: 29 December 2020 / Published: 2 February 2021

(This article belongs to the Special Issue Physiological and Molecular Mechanisms of Plant Response to Metal Stress)

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Abstract

The present study was aimed at exploring the effect of soil application of different concentrations of orthophosphate (P) (0, 10, 20, 30, and 40 mg kg⁻¹) on rice agronomic and yield parameters, arsenic (As) species accumulation, and polyphenol levels in the grain of rice grown under As spiked soil (10 mg kg⁻¹). The contents of As species (As(V), As (III), MMA and DMA) and polyphenols in rice grain samples were estimated using LC-ICP-MS and LC-MS/MS, respectively. P treatments significantly reduced the toxic effects of As on agronomic parameters such as root weight and length, shoot and spike length, straw, and grain yield. Among the treatments studied, only the treatment of 30 mg kg⁻¹ P helps to decrease the elevated levels of As (V), As (III), and DMA in rice grains due to As application. The study revealed that 30 mg kg⁻¹ was the optimal P application amount to minimize AS accumulation in rice grains and As-linked toxicity on agronomic parameters and chlorophyll biosynthesis. Furthermore, the levels of trans-ferulic acid, chlorogenic acid, caffeic acid, and apigenin-7-glucoside increased in response to accumulation of As in the rice grain. In conclusion, the precise use of phosphorus may help to mitigate arsenic linked phytotoxicity and enhance the food safety aspect of rice grain. View Full-Text

Keywords: arsenic speciation; LC-ICP-MS; LC-MS/MS; phosphorus; phenolics; flavonoids; rice; toxicity

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Chattopadhyay, A.; Singh, A.P.; Kasote, D.; Sen, I.; Regina, A. Effect of Phosphorus Application on Arsenic Species Accumulation and Co-Deposition of Polyphenols in Rice Grain: Phyto and Food Safety Evaluation. Plants 2021, 10, 281. https://doi.org/10.3390/plants10020281

AMA Style

Chattopadhyay A, Singh AP, Kasote D, Sen I, Regina A. Effect of Phosphorus Application on Arsenic Species Accumulation and Co-Deposition of Polyphenols in Rice Grain: Phyto and Food Safety Evaluation. Plants. 2021; 10(2):281. https://doi.org/10.3390/plants10020281

Chicago/Turabian Style

Chattopadhyay, Arghya, Anand P. Singh, Deepak Kasote, Indrajit Sen, and Ahmed Regina. 2021. "Effect of Phosphorus Application on Arsenic Species Accumulation and Co-Deposition of Polyphenols in Rice Grain: Phyto and Food Safety Evaluation" Plants 10, no. 2: 281. https://doi.org/10.3390/plants10020281

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Effect of Phosphorus Application on Arsenic Species Accumulation and Co-Deposition of Polyphenols in Rice Grain: Phyto and Food Safety Evaluation

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