Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil

Due to the biomagnifying effect in the food chains, heavy metals will cause serious harm to the food produced in paddy soil, and then threaten human health. The remediation of soil heavy metals by the addition of amendments is a common method. However, the combination of the two amendments has been...

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Autores principales:	Xiaolin Kuang, Kangying Si, Huijuan Song, Liang Peng, Anwei Chen
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	amendment biodiversity heavy metals rice soil Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/e76e367e45cf4f0fb703bedf4a256be1
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spelling	oai:doaj.org-article:e76e367e45cf4f0fb703bedf4a256be12021-11-17T10:42:36ZLime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil1664-302X10.3389/fmicb.2021.749946https://doaj.org/article/e76e367e45cf4f0fb703bedf4a256be12021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmicb.2021.749946/fullhttps://doaj.org/toc/1664-302XDue to the biomagnifying effect in the food chains, heavy metals will cause serious harm to the food produced in paddy soil, and then threaten human health. The remediation of soil heavy metals by the addition of amendments is a common method. However, the combination of the two amendments has been less studied and its effect is unknown. In this study, we investigated the effects of different concentrations of a lime and calcium-magnesium phosphate (CMP) amendments metal availability and paddy soil bacteria biodiversity. The experiment proves that the addition of 0.5 and 1.0‰ amendment can effectively reduce cadmium (Cd) availability and the cadmium content in rice to be below 0.2 mg/kg, meeting the national food safety level. The results demonstrate that increasing pH and phosphorous (P) in soil were two important factors decreasing available cadmium. Furthermore, biodiversity analysis of the treated soil showed that the amendment increased biodiversity. Proteobacteria and Chloroflex were the most abundant bacteria at the phylum level, followed by Acidobacterium and Nitrospirae. The abundance of Bacterodietes-vadinHA17, Syntrophaceae, and Thiobacillus increased as phosphorous increased. Cadmium passivation might induce those species.Xiaolin KuangXiaolin KuangKangying SiKangying SiHuijuan SongHuijuan SongLiang PengLiang PengAnwei ChenAnwei ChenFrontiers Media S.A.articleamendmentbiodiversityheavy metalsricesoilMicrobiologyQR1-502ENFrontiers in Microbiology, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	amendment biodiversity heavy metals rice soil Microbiology QR1-502
spellingShingle	amendment biodiversity heavy metals rice soil Microbiology QR1-502 Xiaolin Kuang Xiaolin Kuang Kangying Si Kangying Si Huijuan Song Huijuan Song Liang Peng Liang Peng Anwei Chen Anwei Chen Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
description	Due to the biomagnifying effect in the food chains, heavy metals will cause serious harm to the food produced in paddy soil, and then threaten human health. The remediation of soil heavy metals by the addition of amendments is a common method. However, the combination of the two amendments has been less studied and its effect is unknown. In this study, we investigated the effects of different concentrations of a lime and calcium-magnesium phosphate (CMP) amendments metal availability and paddy soil bacteria biodiversity. The experiment proves that the addition of 0.5 and 1.0‰ amendment can effectively reduce cadmium (Cd) availability and the cadmium content in rice to be below 0.2 mg/kg, meeting the national food safety level. The results demonstrate that increasing pH and phosphorous (P) in soil were two important factors decreasing available cadmium. Furthermore, biodiversity analysis of the treated soil showed that the amendment increased biodiversity. Proteobacteria and Chloroflex were the most abundant bacteria at the phylum level, followed by Acidobacterium and Nitrospirae. The abundance of Bacterodietes-vadinHA17, Syntrophaceae, and Thiobacillus increased as phosphorous increased. Cadmium passivation might induce those species.
format	article
author	Xiaolin Kuang Xiaolin Kuang Kangying Si Kangying Si Huijuan Song Huijuan Song Liang Peng Liang Peng Anwei Chen Anwei Chen
author_facet	Xiaolin Kuang Xiaolin Kuang Kangying Si Kangying Si Huijuan Song Huijuan Song Liang Peng Liang Peng Anwei Chen Anwei Chen
author_sort	Xiaolin Kuang
title	Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
title_short	Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
title_full	Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
title_fullStr	Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
title_full_unstemmed	Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil
title_sort	lime-phosphorus fertilizer efficiently reduces the cd content of rice: physicochemical property and biological community structure in cd-polluted paddy soil
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/e76e367e45cf4f0fb703bedf4a256be1
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Lime-Phosphorus Fertilizer Efficiently Reduces the Cd Content of Rice: Physicochemical Property and Biological Community Structure in Cd-Polluted Paddy Soil

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