镉胁迫下AMF与DSE双接种促进黄芪生长和土壤镉化学形态转化

  • 李春苗 ,
  • 孟静静 ,
  • 刘秀荣 ,
  • 张楠楠 ,
  • 杨晓童 ,
  • 贺超 ,
  • 贺学礼
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李春苗(2001—),女,河北大学硕士研究生,主要从事植物生态方向研究. E-mail: 18738794450@163.com

收稿日期: 2025-12-29

  网络出版日期: 2026-09-15

Dual inoculation of AMF and DSE promotes the growth of Astragalus mongholicus and the transformation of cadmium chemical forms in soil under cadmium stress

  • LI Chunmiao ,
  • MENG Jingjing ,
  • LIU Xiurong ,
  • ZHANG Nannan ,
  • YANG Xiaotong ,
  • HE Chao ,
  • HE Xueli
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  • 1. College of Life Sciences, Hebei University, Baoding 071002, China; 2. College of Life Sciences, Hengshui University, Hengshui 053000, China; 3. Institute of Medicinal Plant Derelopment, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100000, China

Received date: 2025-12-29

  Online published: 2026-09-15

摘要

镉(cadmium,Cd)是典型重金属污染物,严重抑制药用植物生长.通过设置0、5、10、15 mg/kg共4个Cd质量分数开展盆栽实验,探究丛枝菌根真菌(arbuscular mycorrhizal fungi,AMF)与深色有隔内生真菌(dark septate endophytes,DSE)双接种对黄芪(Astragalus mongholicus)生长及Cd耐受性的影响.结果表明:AMF和DSE均能有效侵染黄芪根系,各接菌处理显著提高了黄芪地上、地下生物量和药用成分含量;高Cd质量分数下,双接种相较单接种显著提高了植株渗透调节物质含量,改善了根际土壤养分状况,降低了根部Cd含量,并促使土壤Cd由可交换态向残渣态转化.接菌种类和土壤因子交互作用是影响黄芪生长、生理指标的主要因素,黄芪Cd含量主要受土壤因子和Cd胁迫交互作用调控.黄芪地上、地下生物量与土壤因子、药用成分含量显著正相关,与丙二醛含量显著负相关.双接种AMF和DSE通过生理调控与土壤Cd化学形态转化,协同缓解Cd胁迫对黄芪生长的抑制作用,为重金属污染土壤修复及药用植物培育提供了有效途径.

本文引用格式

李春苗 , 孟静静 , 刘秀荣 , 张楠楠 , 杨晓童 , 贺超 , 贺学礼 . 镉胁迫下AMF与DSE双接种促进黄芪生长和土壤镉化学形态转化[J]. 河北大学学报(自然科学版), 2026 , 46(5) : 541 -553 . DOI: 10.3969/j.issn.1000-1565.2026.05.010

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