SUN Jiahua,LI Yi,QI Limin,et al.Effects of Inoculation of Arbuscular Mycorrhizal Fungi (AMF) on Remediation of Cadmium Contaminated Soil by Landscape Ornamental Plant Emilia javanica[J].Northern Horticulture,2025,(9):122-130.[doi:10.11937/bfyy.20244601]
景观观赏性植物缨绒花接种丛枝菌根真菌对土壤镉污染修复的影响
- Title:
- Effects of Inoculation of Arbuscular Mycorrhizal Fungi (AMF) on Remediation of Cadmium Contaminated Soil by Landscape Ornamental Plant Emilia javanica
- 文章编号:
- 1001-0009(2025)09-0122-09
- Keywords:
- arbuscular mycorrhizal fungi; ornamental plants; Emilia javanica; cadmium pollution; soil remediation
- 分类号:
- S 151
- 文献标志码:
- A
- 摘要:
- 以缨绒花（Emilia javanica）为试材，采用2个丛枝菌根真菌接种组（接种Diversispora eburnea或不接种）和3个镉浓度水平（0、5 mg·kg-1和15 mg·kg-1）的双因子完全随机设计的方法，研究了土壤重金属镉污染下丛枝菌根真菌对缨绒花生长、镉富集以及土壤中镉形态的影响，以期为土壤镉污染修复提供参考依据。结果表明：在0、5 mg·kg-1镉污染下，丛枝菌根真菌接种可以显著提高缨绒花115.13%和33.53%的总生物量。在5 mg·kg-1镉污染下，丛枝菌根真菌接种还显著增加了132.61%土壤可交换态的镉比例，显著降低了28.64%和42.34%的土壤碳酸盐结合态和残渣态的镉比例，并且缨绒花地上和地下部分的镉含量分别显著增加了46.62%和157.05%。而在15 mg·kg-1 Cd污染下，丛枝菌根真菌接种减少了缨绒花的镉含量，并且抑制了镉向缨绒花地上部分的转运。综上，缨绒花接种丛枝菌根真菌在不同镉浓度下的双重作用为低浓度时促进生长和镉吸收，高浓度时减轻毒害并限制转运。
- Abstract:
- Taking Emilia javanica as the experimental material，two-factor completely randomized design that incorporated two AMF inoculation scenarios (inoculated with Diversispora eburnea or non-inoculated) and three levels of cadmium (Cd) concentration in soil (0，5 mg·kg-1，and 15 mg·kg-1) were carried out.The effects of AMF on the growth of Emilia javanica，Cd accumulation within the plant，and Cd speciation in soil under Cd contamination conditions were studied,in order to provide a reference for the remediation of Cd-contaminated soils.The results showed that under 0 mg·kg-1 and 5 mg·kg-1 cadmium contamination，AMF inoculation significantly increased the total biomass of Emilia javanica by 115.13% and 33.53%.Under 5 mg·kg-1 cadmium contamination，AMF inoculation significantly increased the proportion of exchangeable cadmium in the soil by 132.61%，while significantly decreased the proportions of carbonate-bound and residual cadmium in the soil by 28.64% and 42.34%，respectively.Additionally，the cadmium concentrations in the aboveground and underground parts of Emilia javanica increased significantly by 46.62% and 157.05%，respectively.However，at 15 mg·kg-1 cadmium contamination，AMF inoculation reduced the cadmium concentration in Emilia javanica and inhibited the transport of cadmium to the aboveground parts of the plant.In conclusion，the dual effects of inoculation of arbuscular mycorrhizal fungi with Emilia javanica under different cadmium concentrations,promoting growth and cadmium absorption at low concentrations，reducing toxicity and limiting transport at high concentrations.
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备注/Memo
第一作者简介：孙佳华（1997-），男，硕士，助教，现主要从事土壤重金属修复等研究工作。E-mail：sunjiahua@henu.edu.cn.责任作者：史楠楠（1986-），男，博士，讲师，现主要从事菌根真菌群落结构与功能等研究工作。E-mail:nshi@vip.henu.edu.cn.基金项目：国家自然科学基金资助项目（31800438）;河南省重点研发与推广专项资助项目（202102110064）。收稿日期：2024-11-21