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遮阴对伴矿景天Cd、Pb、Zn累积特征的影响

陈思 阎凯 何永美 湛方栋 祖艳群 李元 陈建军 李博

陈思, 阎凯, 何永美, 湛方栋, 祖艳群, 李元, 陈建军, 李博. 遮阴对伴矿景天Cd、Pb、Zn累积特征的影响[J]. 中国生态农业学报 (中英文), 2022, 30(3): 409−418 doi: 10.12357/cjea.20210579
引用本文: 陈思, 阎凯, 何永美, 湛方栋, 祖艳群, 李元, 陈建军, 李博. 遮阴对伴矿景天Cd、Pb、Zn累积特征的影响[J]. 中国生态农业学报 (中英文), 2022, 30(3): 409−418 doi: 10.12357/cjea.20210579
CHEN S, YAN K, HE Y M, ZHAN F D, ZU Y Q, LI Y, CHEN J J, LI B. Effect of shading on the accumulation of Cd, Pb and Zn of Sedum plumbizincicola[J]. Chinese Journal of Eco-Agriculture, 2022, 30(3): 409−418 doi: 10.12357/cjea.20210579
Citation: CHEN S, YAN K, HE Y M, ZHAN F D, ZU Y Q, LI Y, CHEN J J, LI B. Effect of shading on the accumulation of Cd, Pb and Zn of Sedum plumbizincicola[J]. Chinese Journal of Eco-Agriculture, 2022, 30(3): 409−418 doi: 10.12357/cjea.20210579

遮阴对伴矿景天Cd、Pb、Zn累积特征的影响

doi: 10.12357/cjea.20210579
基金项目: 云南省重点研发项目(2019BC001-04)资助
详细信息
    作者简介:

    陈思, 主要从事土壤重金属污染生态修复研究。E-mail: 1204035029@qq.com

    通讯作者:

    李博, 主要从事土壤重金属污染生态修复研究。E-mail: ecolibo@foxmail.com

  • 中图分类号: X53

Effect of shading on the accumulation of Cd, Pb and Zn of Sedum plumbizincicola

Funds: The study was supported by the Key Research and Development Project of Yunnan Province (2019BC001-04).
More Information
  • 摘要: 为促进伴矿景天(Sedum plumbizincicola)在云南高原土壤污染地区修复实践中的应用, 本文在云南怒江兰坪铅锌矿区矿渣地开展种植伴矿景天的大田试验, 设置遮阴处理(光照强度降低25%), 以自然光照为对照, 测定植株生物量、亚细胞组分和化学形态镉(Cd)、铅(Pb)、锌(Zn)含量及全量, 研究遮阴处理对伴矿景天Cd、Pb、Zn累积特征的影响。结果表明: 1)遮阴处理导致伴矿景天茎、叶中Cd、Pb、Zn含量和累积量均显著降低(P<0.05或P<0.01), 含量降幅范围为15.2%~52.1%, 累积量降幅范围为17.6%~67.4%; 且遮阴条件下伴矿景天Cd、Zn的富集系数和转移系数显著小于未遮阴条件下生长的伴矿景天(P<0.05)。2)遮阴条件下, 伴矿景天植株叶细胞壁Cd含量显著降低(P<0.05), Pb含量显著增加(P<0.05); 且伴矿景天茎、叶中细胞器和可溶部分Zn含量均显著降低(P<0.05), 降幅范围为11.8%~57.3%。3)伴矿景天茎、叶中Zn以醋酸提取态(FHAc)和盐酸提取态(FHCl)为主, Cd、Pb以氯化钠提取态(FNaCl)为主; 且遮阴处理导致伴矿景天叶片中FHAc-Cd含量极显著增加(P<0.01), 去离子水提取态(FW) Cd含量显著降低(P<0.05或P<0.01); 茎、叶中乙醇提取态(FE) Zn和FHAc-Zn、FHCl-Zn含量均极显著降低(P<0.01)。综上所述, 遮阴导致伴矿景天的液泡区隔化和细胞壁固持作用降低, 且其体内难溶的磷酸盐类惰性态重金属含量减少, 最终降低伴矿景天对Cd、Zn的富集和转运能力。
  • 图  1  遮阴对伴矿景天生物量(a)和叶绿素含量(b)的影响

    *和**分别表示遮阴和不遮阴处理间差异达P<0.05和P<0.01显著水平。* and ** mean significant differences between shading and no shading treatments at P<0.05 and P<0.01 levels, respectively.

    Figure  1.  Effects of shading on the biomass (a) and chlorophyll content (b) of Sedum plumbisincicola

    图  2  遮阴对伴矿景天Cd (a)、Pb (b)、Zn (c)含量的影响

    *和**分别表示遮阴和不遮阴处理间差异达P<0.05和P<0.01显著水平。* and ** mean significant differences between shading and no shading treatments at P<0.05 and P<0.01 levels, respectively.

    Figure  2.  Effects of shading on the content of Cd (a), Pb (b) and Zn (c) in Sedum plumbisincicola

    图  3  遮阴对伴矿景天Cd (a)、Pb (b)、Zn (c)累积量的影响

    *和**分别表示遮阴和不遮阴处理间差异达P<0.05和P<0.01显著水平。* and ** mean significant differences between shading and no shading treatments at P<0.05 and P<0.01 levels, respectively.

    Figure  3.  Effects of shading on the accumulation of Cd (a), Pb (b) and Zn (c) in Sedum plumbisincicola

    图  4  遮阴对伴矿景天叶、茎中Cd (a, b)、Pb (c, d)、Zn (e, f)化学形态含量的影响

    FE: 乙醇提取态; FW: 去离子水提取态; FNaCl: 氯化钠提取态; FHAc: 醋酸提取态; FHCl: 盐酸提取态; FR: 残渣态。*和**分别表示遮阴和不遮阴处理间差异达P<0.05和P<0.01显著水平。FE: ethanol-extractable form; FW: water extractable form; FNaCl: NaCl extractable form; FHAc: HAc extractable form; FHCl: HCl extractable form; FR: residual form. * and ** mean significant differences between shading and no shading treatments at P<0.05 and P<0.01 levels, respectively.

    Figure  4.  Effects of shading on the contents of Cd (a, b), Pb (c, d) and Zn (e, f) chemical forms in leaves, stems of Sedum plumbisincicola

    表  1  遮阴对Cd、Pb和Zn在伴矿景天叶和茎中亚细胞分布的影响

    Table  1.   Effects of shading on subcellular distrubition of Cd, Pb and Zn in leaves and stems of Sedum plumbisincicola

    重金属
    Heavy metal
    器官
    Organ
    处理
    Treatment
    含量 Content (mg∙kg−1)亚细胞组分占比 Proportion of subcellular (%)
    F1F2F3F1F2F3
    Cd叶 Leaf遮阴 Shading3.91±0.46Bb2.00±0.31Ac5.89±0.89Aa33.216.949.9
    不遮阴 No shading8.05±0.63Aa2.79±0.34Ac5.90±0.75Ab48.116.735.2
    茎 Stem遮阴 Shading2.40±0.16Ab1.60±0.28Ac3.66±0.10Aa31.320.947.8
    不遮阴 No shading2.10±0.33Aab1.50±0.09Ab2.61±0.57Ba33.824.242.0
    Pb叶 Leaf遮阴 Shading19.50±1.52Aa16.41±2.80Aa9.29±0.71Ab43.136.320.6
    不遮阴 No shading16.90±0.68Ba14.65±0.45Ab9.33±0.19Ac41.4
    35.822.8
    茎 Stem遮阴 Shading17.40±0.38Ab19.85±1.06Aa8.52±0.82Ac38.043.418.7
    不遮阴 No shading16.36±2.86Aa18.32±1.84Aa7.53±0.47Ab38.843.417.8
    Zn叶 Leaf遮阴 Shading111.41±19.03Aa16.99±2.76Bb90.25±7.73Ba51.07.741.3
    不遮阴 No shading124.92±5.02Aa39.92±5.35Ac105.40±4.43Ab46.214.839.0
    茎 Stem遮阴 Shading97.26±15.34Aa38.47±5.76Bb96.34±6.91Ba41.916.641.5
    不遮阴 No shading126.50±24.00 Aa80.44±5.32Ab109.19±2.73Aa40.025.534.5
      表中数据为平均值±标准差(n=3)。同列不同大写字母表示两个处理间差异显著(P<0.05); 同行不同小写字母表示亚细胞组分间差异显著(P<0.05)。F1: 细胞壁; F2: 细胞器; F3: 含核糖体的可溶部分。The data in the table is average mean±standard deviation (n=3). Different uppercase letters in the same column indicate significant differences between shading and no shading treatments (P<0.05), while different lowercase letters in the same line indicate significant differences among subcellular components (P<0.05). F1, F2 and F3 are cell wall, cell organelle, and soluble fraction.
    下载: 导出CSV

    表  2  遮阴对伴矿景天的Cd、Pb、Zn累积特征

    Table  2.   Effects of shading on accumulation characteristics of Cd, Pb and Zn in Sedum plumbisincicola

    处理
    Treatment
    CdPbZn
    ECTFBTFECTFBTFECTFBTF
    不遮阴 No shading5.55±0.61a4.20±0.45a8.23±1.02a0.10±0.01a0.87±0.07a1.73±0.34a1.61±0.14a4.39±0.44a8.59±0.61a
    遮阴 Shading3.16±0.34b3.40±0.39b6.98±2.41a0.08±0.01a0.65±0.12b1.28±0.07b0.61±0.03b3.47±0.34b6.94±1.22a
      表中数据为平均值±标准差(n=3), 同列不同字母表示处理间差异显著(P<0.05)。EC: 富集系数; TF: 转运系数; BTF: 生物转移因子。The data in the table are average value±standard deviation (n=3). Different letters in the same column indicate significant differences (P<0.05) between shading and no shading treatments. EC: enrichment coefficient; TF: transfer factor; BTF: biological transfer factor.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-29
  • 录用日期:  2021-11-09
  • 网络出版日期:  2021-12-11
  • 刊出日期:  2022-03-07

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