title: Ionomic and transcriptomic analysis provides new insight into the distribution and transport of cadmium and arsenic in rice.
abstract: To identify the key barrier parts and relevant elements during Cd/As transport into brown rice, 16 elements were measured in 14 different parts of 21 rice genotypes; moreover, transcriptomic of different nodes was analyzed. Cd/As contents in root and nodes were significantly higher than those other parts. Node I had the highest Cd content among nodes, leading an increase in gene expressions involved in glycolytic and Cd detoxification. The Cu/Zn/Co distribution and transport to various parts was similar to that of Cd, and Fe/Sb distribution and transport to various parts was similar to that of As. Moreover, Cu/Zn/Co/Mg was correlated with Cd in root and nodes, as well as Fe with As. Besides, the ionomic profile showed the different parts of an organ were closely related, and the spatial distribution of different organs was consistent with the growth morphology of rice. Therefore, root and nodes are two key barriers to Cd/As transport into brown rice. Moreover, Node I has the highest Cd accumulation capacities among nodes. The ionomic profile reflects relationships among plant parts and correlations between the elements, suggesting that nodes are hubs for element distribution, as well as the correlation between Cd with Zn/Cu/Co/Mg, between Fe with As.
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Xuemin
authors.initials: X
authors.lastname: Feng
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Han
authors.affiliation: National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese academy of Sciences, Shanghai 200032, PR China.
authors.forename: Daiyin
authors.initials: D
authors.lastname: Chao
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Yajing
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China. Electronic address: 3761520835@sina.com.
authors.forename: Ruigang
authors.initials: R
authors.lastname: Wang
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Junkang
authors.initials: J
authors.lastname: Guo
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Renwei
authors.initials: R
authors.lastname: Feng
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Yingming
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Yongzhen
authors.initials: Y
authors.lastname: Ding
authors.affiliation: Rural Energy and Environment Agency, Guangxi, Nanning 530022, PR China.
authors.forename: Biyan
authors.initials: B
authors.lastname: Huang
authors.affiliation: Innovative Team of Heavy Metal Remediation Contaminated Farmland Soil of Chinese Academy of Agricultural Sciences, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, PR China; Key Laboratory of Original Agro-environmental Quality, Ministry of Agriculture, Tianjin 300191, PR China.
authors.forename: Guilong
authors.initials: G
authors.lastname: Zhang
mesh_terms: D001151:Arsenic / Q000378:metabolism*; D002104:Cadmium / Q000378:metabolism*; D020869:Gene Expression Profiling; D005838:Genotype; D012275:Oryza / Q000235:genetics / Q000378:metabolism*; D025341:Principal Component Analysis; D012989:Soil Pollutants / Q000378:metabolism*
chemical_list: D012989:Soil Pollutants; D002104:Cadmium; D001151:Arsenic
keywords: Cadmium and arsenic; Ionomic; Rice; Transcriptomic; Transport