Cadmium Absorption And Translocation Of Amaranth (Amaranthus Mangostanus L.) Affected By Iron Deficiency
文献类型： 外文期刊
作者： Zou, R; Wang, L; Li, YCC; Tong, ZH; Huo, WM; Chi, KY; Fan, HL
作者机构：
关键词： Cadmium Isotope; Iron Transporter; Metabolic Inhibitor; Calcium Channel Inhibitor
期刊名称： ENVIRONMENTAL POLLUTION
ISSN： 0269-7491
年卷期： 2020 年 256 卷
页码：
收录情况： JCR（2021版） ; EI（2021版）
摘要： Amaranth (Amaranthus mangostanus L.) has superior capability for accumulating cadmium (Cd) and has the potential to be used for phytoremediation of Cd contaminated soils. Iron (Fe) is chemically similar to Cd and may mediate Cd-induced physiological or metabolic impacts in plants. The purpose was to investigate the model of time-dependent and concentration-dependent kinetics of Cd absorption under Fe deficiency, understanding the physiological mechanism of Cd absorption in amaranth roots. The kinetic characteristics of Cd uptake by amaranth grown in Cd enriched nutritional solution with or without Fe addition and with methanol-chloroform, carbonyl cyanide 3-chlorophenylhydrazone (CCCP), and lanthanum chloride (LaCl3) were compared using Cd-109(2+) isotope labeling technique. The results showed that Cd uptake was time-dependent and about 90-93% of uptake occurred during the first 150 min. The kinetics of Cd uptake showed that two stages were involved. The saturation stage fitted the Michaelis-Menten model when concentrations of Cd were lower than 12.71 mu mol/L and then the absorption of Cd by roots was increased linearly during the second stage. Only linear absorption was observed with methanol-chloroform treatment while the metabolic inhibitor CCCP inhibited only the saturation absorption process, and the Ca channel inhibitor LaCl3 partially inhibited the two stages of absorption. These results indicated that the root absorption of Cd-109(2+) was enhanced under Fe deficiency which induced more Fe transporters in the root cell membrane, and the Ca channel, apoplastic and symplastic pathways enhanced the Cd absorption in roots. (C) 2019 Elsevier Ltd. All rights reserved.
分类号：
- 相关文献
作者其他论文 更多>>
-
Fertilizer Types Shaped The Microbial Guilds Driving The Dissimilatory Nitrate Reduction To Ammonia Process In A Ferralic Cambisol
作者：Luo, XS; Qian, H; Wang, L; Han, S; Wen, SL; Wang, BR; Huang, QY; Chen, WL
关键词：Dissimilatory Nitrate Reduction To Ammonia (Dnra); Nrfa; Ferralic Cambisol; Long-Term Fertilization
-
Effect Of Different Pyrolysis Temperatures On Physico-Chemical Characteristics And Lead(Ii) Removal Of Biochar Derived From Chicken Manure
作者：Yan, CX; Xu, YM; Wang, L; Liang, XF; Sun, YB; Jia, HT
关键词：
-
Genomic Variants Associated With The Number And Diameter Of Muscle Fibers In Pigs As Revealed By A Genome-Wide Association Study
作者：Zhang, L; Guo, Y; Wang, L; Liu, X; Yan, H; Gao, H; Hou, X; Zhang, Y; Guo, H; Yue, J; An, J; Wang, L
关键词：Genotyping Beadchip; Intercross Population; Longissimus Muscle; Quantitative Trait Loci; Swine
-
Identification Of Quantitative Trait Loci Associated With Fruit Quality Traits In Pear
作者：Wang, L; Wang, SK; Su, YL; Chen, Y; Wang, L; Li, XG; Yang, J
关键词：Candidate Gene; Molecular Marker; Phenotypic Traits; Qtl
-
Genome-Wide Identification, Characterization, And Expression Analysis Of Nucleotide-Binding Leucine-Rich Repeats Gene Family Under Environmental Stresses In Tea (Camellia Sinensis)
作者：Wang, YC; Lu, QH; Xiong, F; Hao, XY; Wang, L; Zheng, MX; Li, NN; Ding, CQ; Wang, XC; Yang, YJ
关键词：Tea Plant; Nbs; Nb-Arc; Colletotrichum; Disease Resistance Gene; Biotic And Abiotic Stress
-
Formation Of Molecular Oxygen- And Water-Attached Fragment Ions In The Fragmentation Of Protonated 3-(Phenylthio)Chromones
作者：Chai, YF; Wang, L; Lu, CY
关键词：
-
Pale Green Mutant Analyses Reveal The Importance Of Csglks In Chloroplast Developmental Regulation And Their Effects On Flavonoid Biosynthesis In Tea Plant
作者：Hao, XY; Zhang, WF; Liu, Y; Zhang, HJ; Ren, HZ; Chen, Y; Wang, L; Zeng, JM; Yang, YJ; Wang, XC
关键词：Leaf Color Variation; Mutant; Molecular Mechanism; Photosynthesis; Secondary Metabolism