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镉胁迫对万寿菊属植物幼苗生理及富集的影响

刘翰升 赵春莉 刘玥 国伟强

刘翰升,赵春莉,刘 玥,等. 镉胁迫对万寿菊属植物幼苗生理及富集的影响 [J]. 福建农业学报,2019,34(10):1221−1227. doi: 10.19303/j.issn.1008-0384.2019.10.016
引用本文: 刘翰升,赵春莉,刘 玥,等. 镉胁迫对万寿菊属植物幼苗生理及富集的影响 [J]. 福建农业学报,2019,34(10):1221−1227. doi: 10.19303/j.issn.1008-0384.2019.10.016
LIU H S, ZHAO C L, LIU Y, et al. Effects of Cadmium Stress on Physiology and Enrichment of Tagetes Seedlings [J]. Fujian Journal of Agricultural Sciences,2019,34(10):1221−1227. doi: 10.19303/j.issn.1008-0384.2019.10.016
Citation: LIU H S, ZHAO C L, LIU Y, et al. Effects of Cadmium Stress on Physiology and Enrichment of Tagetes Seedlings [J]. Fujian Journal of Agricultural Sciences,2019,34(10):1221−1227. doi: 10.19303/j.issn.1008-0384.2019.10.016

镉胁迫对万寿菊属植物幼苗生理及富集的影响

doi: 10.19303/j.issn.1008-0384.2019.10.016
基金项目: 吉林省科技发展计划项目(20190303078SF)
详细信息
    作者简介:

    刘翰升(1994−),男,硕士研究生,主要从事重金属植物修复与抗性植物筛选(E-mail:604171193@qq.com

    通讯作者:

    赵春莉(1973−),女,博士,副教授,硕士生导师,主要从事园林植物生物技术及资源等研究(E-mail:zcl8368@163.com

  • 中图分类号: S 681.9

Effects of Cadmium Stress on Physiology and Enrichment of Tagetes Seedlings

  • 摘要:   目的  研究不同质量浓度(0、0.3、3、20、60、120、180、240 mg·L−1)镉胁迫下,万寿菊属植物幼苗(万寿菊、孔雀草)的生理指标与富集指标,比较可溶性蛋白、丙二醛、过氧化物酶、超氧化物歧化酶与镉吸收量,明确不同质量浓度镉胁迫下万寿菊属植物幼苗生理调节机制与富集能力。  方法  通过水培试验,采用镉胁迫处理幼苗,测定可溶性蛋白、丙二醛、过氧化物酶、超氧化物歧化酶与镉吸收量,研究镉胁迫对万寿菊、孔雀草幼苗的生理指标与幼苗富集效果的影响。  结果  随着Cd胁迫质量浓度的增加,万寿菊幼苗的可溶性蛋白质含量逐渐降低,丙二醛含量随Cd质量浓度增加先降低后升高再降低,过氧化物酶活性逐渐升高,超氧化物歧化酶活性先降低后升高再降低;孔雀草幼苗可溶性蛋白质含量逐渐降低,丙二醛含量先下降后上升再下降后又上升,过氧化物酶先上升后下降,超氧化物歧化酶含量先上升后下降再上升后下降;万寿菊、孔雀草幼苗对镉的吸收量随Cd胁迫质量浓度的增加积累能力逐渐增强,万寿菊幼苗与孔雀草幼苗在180 mg·L−1Cd胁迫时,幼苗内Cd含量分别达到440.40、478.23 mg·kg−1  结论  中、低量的Cd胁迫(0.3–120 mg·L−1)对万寿菊、孔雀草幼苗生理影响小,自身可以调节,高量的Cd胁迫(180、240 mg·L−1)产生破坏作用,影响较大;万寿菊、孔雀草幼苗富集量随Cd胁迫质量浓度升高而升高,直到幼苗不萌发;万寿菊幼苗抵抗Cd胁迫生理机制过氧化物酶起主导作用,孔雀草幼苗抵抗Cd胁迫生理机制超氧化物歧化酶起主导作用;采用万寿菊、孔雀草种子进行植物修复有较大应用前景。
  • 图  1  不同质量浓度Cd处理万寿菊属幼苗Cd含量

    注:不同大写字母表示差异极显著(P<0.01),不同小写字母表示差异显著(P<0.05)。差异性分析为同一种植物间的差异性比较。

    Figure  1.  Cd content in marigold seedlings under stress at various Cd concentrations

    Note: Different capital letters indicate extremely significant differences ( P <0.01). Different lowercase letters indicate significant difference ( P <0.05). Differences are between plants of the same specie.

    表  1  镉胁迫对万寿菊幼苗生理指标的影响

    Table  1.   Effect of Cd stress on physiological indices of marigold seedlings

    Cd处理
    Cd Treatment
    可溶性蛋白
    Soluable Protein/(mg·g−1)
    丙二醛
    MDA/(μmol·g−1 )
    过氧化物酶
    POD/(U·g−1)
    超氧化物歧化酶
    SOD/(U·g−1)
    A12.20±0.02 Aa0.064 5±0.002 5 BCb956.67±10.26 Gg539.43±36.78 Aa
    A22.14±0.01 ABab0.068 3±0.003 1 Bb1 030.00±16.37 Ff407.62±19.71 Bb
    A32.05±0.01 BCbc0.032 9±0.001 7 Dd1 528.67±10.26 Ee247.62±13.78 CDcd
    A41.95±0.01 Cc0.090 6±0.002 1 Aa1 801.33±4.62 Dd366.48±13.97 Bb
    A51.96±0.01 Cc0.089 8±0.002 7 Aa1 886.00±14.00 Cc290.29±18.29 Cc
    A61.77±0.01 Dd0.060 1±0.003 8 Cc2 574.00±9.17 Bb256.00±12.73 CDcd
    A71.52±0.17 Ee0.059 2±0.001 5 Cc4 062.67±34.43 Aa225.52±45.96 Dd
    A8
    注:表中数据为平均值±标准差;同列数据后不同大写字母表示差异极显著(P<0.01),不同小写字母表示差异显著(P<0.05)。“—”表示不萌发。表2同。
    Note: The data in the table is the mean ± standard deviation; Different capital letters after the same data indicate that the difference is extremely significant (P<0.01), and lowercase letters indicate significant differences (P<0.05). "—" means not germination. The same as Table 2.
    下载: 导出CSV

    表  2  镉胁迫对孔雀草幼苗生理指标的影响

    Table  2.   Effect of Cd stress on physiological indices of peafowl seedlings

    Cd处理
    Cd Treatment
    可溶性蛋白
    Soluable Protein/(mg·g−1)
    丙二醛
    MDA/(μmol·g−1)
    过氧化物酶
    POD/(U·g−1)
    超氧化物歧化酶
    SOD/(U·g−1)
    B12.02±0.03 Bb0.052 9±0.000 7 Bb1 299.33±14.05 Ff526.48±25.69 Cc
    B22.24±0.01 Aa0.038 0±0.001 6 CDcd2 147.33±52.17 Bb627.05±27.46 Bb
    B31.65±0.02 Cc0.044 7±0.000 2 BCbc2 360.00±40.15 Aa504.38±27.56 Cc
    B41.50±0.03 Dd0.031 5±0.000 3 Dd1 915.33±11.02 Cc723.81±48.51 Aa
    B51.46±0.02 Dd0.042 9±0.005 0 BCDc1 794.67±4.16 Dd495.23±21.60 Cc
    B61.37±0.06 Ee0.042 5±0.001 9 BCDc1 423.33±17.01 Ee486.10±25.18 CDc
    B71.29±0.02 Ff0.067 9±0.012 8 Aa1 414.67±34.43 Ee427.43±13.71 Dd
    B8
    下载: 导出CSV
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  • 收稿日期:  2019-06-12
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