Huan Zhong, Wenli Tang, Zizhu Li, Christian Sonne, Su Shiung Lam, Xiao Zhang, Sae Yun Kwon, Jörg Rinklebe, Luís M. Nunes, Ri-Qing Yu, Baohua Gu, Holger Hintelmann, Martin Tsz-Ki Tsui, Jiating Zhao, Xin-Quan Zhou, Mengjie Wu, Beibei Liu, Yunyun Hao, Long Chen, Baogang Zhang, Wenfeng Tan, Xu-Xiang Zhang, Hongqiang Ren, Yu-Rong Liu
{"title":"土壤地杆菌科是预测水稻神经毒性甲基汞生物累积的关键因素","authors":"Huan Zhong, Wenli Tang, Zizhu Li, Christian Sonne, Su Shiung Lam, Xiao Zhang, Sae Yun Kwon, Jörg Rinklebe, Luís M. Nunes, Ri-Qing Yu, Baohua Gu, Holger Hintelmann, Martin Tsz-Ki Tsui, Jiating Zhao, Xin-Quan Zhou, Mengjie Wu, Beibei Liu, Yunyun Hao, Long Chen, Baogang Zhang, Wenfeng Tan, Xu-Xiang Zhang, Hongqiang Ren, Yu-Rong Liu","doi":"10.1038/s43016-024-00954-7","DOIUrl":null,"url":null,"abstract":"Contamination of rice by the potent neurotoxin methylmercury (MeHg) originates from microbe-mediated Hg methylation in soils. However, the high diversity of Hg methylating microorganisms in soils hinders the prediction of MeHg formation and challenges the mitigation of MeHg bioaccumulation via regulating soil microbiomes. Here we explored the roles of various cropland microbial communities in MeHg formation in the potentials leading to MeHg accumulation in rice and reveal that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems. We characterized Hg methylating microorganisms from 67 cropland ecosystems across 3,600 latitudinal kilometres. The simulations of a rice-paddy biogeochemical model show that MeHg accumulation in rice is 1.3–1.7-fold more sensitive to changes in the relative abundance of Geobacteraceae compared to Hg input, which is recognized as the primary parameter in controlling MeHg exposure. These findings open up a window to predict MeHg formation and accumulation in human food webs, enabling more efficient mitigation of risks to human health through regulations of key soil microbiomes. Neurotoxic methylmercury (MeHg) in rice poses health risks. This study explores the roles of various cropland microbial communities in MeHg formation on a large scale and identifies that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems, which holds the potential for mitigating global mercury exposure.","PeriodicalId":94151,"journal":{"name":"Nature food","volume":null,"pages":null},"PeriodicalIF":23.6000,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Soil Geobacteraceae are the key predictors of neurotoxic methylmercury bioaccumulation in rice\",\"authors\":\"Huan Zhong, Wenli Tang, Zizhu Li, Christian Sonne, Su Shiung Lam, Xiao Zhang, Sae Yun Kwon, Jörg Rinklebe, Luís M. Nunes, Ri-Qing Yu, Baohua Gu, Holger Hintelmann, Martin Tsz-Ki Tsui, Jiating Zhao, Xin-Quan Zhou, Mengjie Wu, Beibei Liu, Yunyun Hao, Long Chen, Baogang Zhang, Wenfeng Tan, Xu-Xiang Zhang, Hongqiang Ren, Yu-Rong Liu\",\"doi\":\"10.1038/s43016-024-00954-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Contamination of rice by the potent neurotoxin methylmercury (MeHg) originates from microbe-mediated Hg methylation in soils. However, the high diversity of Hg methylating microorganisms in soils hinders the prediction of MeHg formation and challenges the mitigation of MeHg bioaccumulation via regulating soil microbiomes. Here we explored the roles of various cropland microbial communities in MeHg formation in the potentials leading to MeHg accumulation in rice and reveal that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems. We characterized Hg methylating microorganisms from 67 cropland ecosystems across 3,600 latitudinal kilometres. The simulations of a rice-paddy biogeochemical model show that MeHg accumulation in rice is 1.3–1.7-fold more sensitive to changes in the relative abundance of Geobacteraceae compared to Hg input, which is recognized as the primary parameter in controlling MeHg exposure. These findings open up a window to predict MeHg formation and accumulation in human food webs, enabling more efficient mitigation of risks to human health through regulations of key soil microbiomes. Neurotoxic methylmercury (MeHg) in rice poses health risks. This study explores the roles of various cropland microbial communities in MeHg formation on a large scale and identifies that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems, which holds the potential for mitigating global mercury exposure.\",\"PeriodicalId\":94151,\"journal\":{\"name\":\"Nature food\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":23.6000,\"publicationDate\":\"2024-04-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nature food\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.nature.com/articles/s43016-024-00954-7\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"FOOD SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature food","FirstCategoryId":"1085","ListUrlMain":"https://www.nature.com/articles/s43016-024-00954-7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Soil Geobacteraceae are the key predictors of neurotoxic methylmercury bioaccumulation in rice
Contamination of rice by the potent neurotoxin methylmercury (MeHg) originates from microbe-mediated Hg methylation in soils. However, the high diversity of Hg methylating microorganisms in soils hinders the prediction of MeHg formation and challenges the mitigation of MeHg bioaccumulation via regulating soil microbiomes. Here we explored the roles of various cropland microbial communities in MeHg formation in the potentials leading to MeHg accumulation in rice and reveal that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems. We characterized Hg methylating microorganisms from 67 cropland ecosystems across 3,600 latitudinal kilometres. The simulations of a rice-paddy biogeochemical model show that MeHg accumulation in rice is 1.3–1.7-fold more sensitive to changes in the relative abundance of Geobacteraceae compared to Hg input, which is recognized as the primary parameter in controlling MeHg exposure. These findings open up a window to predict MeHg formation and accumulation in human food webs, enabling more efficient mitigation of risks to human health through regulations of key soil microbiomes. Neurotoxic methylmercury (MeHg) in rice poses health risks. This study explores the roles of various cropland microbial communities in MeHg formation on a large scale and identifies that Geobacteraceae are the key predictors of MeHg bioaccumulation in paddy soil systems, which holds the potential for mitigating global mercury exposure.