title: Phosphate fertilizer affected rhizospheric soils: speciation of cadmium and phytoremediation by Chlorophytum comosum.
abstract: Experiments were conducted to investigate the effect of phosphate fertilization on chemical speciation of cadmium (Cd) in the rhizospheric soil of Chlorophytum comosum, a potential cadmium hyperaccumulator. The results revealed that when 200 mg kg-1phosphate was applied into the soil, the Cd contents in the exchangeable fraction (EXC), carbonate-binding fraction (CA), and Fe-Mn oxides-binding fraction (Fe-Mn) were the highest, and the Cd content in the residual fraction (RES) was the lowest. Phosphate fertilization could enhance Cd conversion from RES into CA and weak RES, thereby improving the bioavailability of Cd and enhancing Cd enrichment and adsorption by C. comosum. The total Cd content in the soil was reduced by 10.15 mg kg-1in the planted group, which was significantly different from the control group (p < 0.01). The highest bioaccumulation coefficient (BC) values in root and aboveground parts appeared when the phosphate rates were 276 and 217 mg kg-1, whereas the highest translocation factor (TF) occurred with a phosphate rate of 188 mg kg-1. Phosphate fertilization facilitated phytoremediation of Cd-polluted soil by C. comosum.
authors.affiliation: Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Anhui Province; College of Life Sciences, Anhui Normal University, No. 1 Beijing East Road, Wuhu, 241000, Anhui Province, People's Republic of China. wybpmm@126.com.
authors.forename: Youbao
authors.identifier: http://orcid.org/0000-0002-6232-0902
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Anhui Province; College of Life Sciences, Anhui Normal University, No. 1 Beijing East Road, Wuhu, 241000, Anhui Province, People's Republic of China.
authors.forename: Chengfeng
authors.initials: C
authors.lastname: Zhu
authors.affiliation: Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Anhui Province; College of Life Sciences, Anhui Normal University, No. 1 Beijing East Road, Wuhu, 241000, Anhui Province, People's Republic of China.
authors.forename: Hongfei
authors.initials: H
authors.lastname: Yang
authors.affiliation: Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang City Belt, Anhui Province; College of Life Sciences, Anhui Normal University, No. 1 Beijing East Road, Wuhu, 241000, Anhui Province, People's Republic of China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001673:Biodegradation, Environmental; D002104:Cadmium / Q000378:metabolism / Q000494:pharmacology*; D000460:Chlorophyta / Q000187:drug effects / Q000378:metabolism*; D005308:Fertilizers / Q000032:analysis; D010710:Phosphates / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry; D012987:Soil / Q000737:chemistry*
chemical_list: D005308:Fertilizers; D010710:Phosphates; D012987:Soil; D002104:Cadmium
keywords: Cadmium; Chemical fraction; Chlorophytum comosum; Phosphate fertilization; Phytoremediation