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Study on Seeding Growth and Heavy Metal Translocation of Four Chinese Medicinal Under Cadmium and Arsenic Combined Pollution

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年8
Page:
88-95
Research Field:
Publishing date:

Info

Title:
Study on Seeding Growth and Heavy Metal Translocation of Four Chinese Medicinal Under Cadmium and Arsenic Combined Pollution
Author(s):
MENG Yuan1; 2; ZHANG Liang1; HAN Yichen1; CHEN Yuqi1; GUO Yafeng1; CHEN Jinqi1
(1.School of Agriculture and Bioengineering，Longdong University,Qingyang，Gansu 745000；2.Key Laboratory of Longdong Biological Resources Protection，Utilization and Ecological Restoration,Qingyang，Gansu 745000)
Keywords:
heavy metals; combined pollution; translocation coefficient
PACS:
Ｓ 636.9
DOI:
10.11937/bfyy.20243601
Abstract:
Taking seedlings of four Chinese medicinal herbs，namely Saussurea costus，Houttuynia cordata，Saxifraga stolonifera，and Epimedium brevicornum，as the test materials，a pot experiment was conducted to study the effects of combined cadmium and arsenic pollution on their growth and heavy metal translocation,in order to provide a reference for the cultivation and utilization of Chinese medicinal herbs in heavy metal-contaminated soils.The results showed that，As significantly inhibited the shoot growth of Saussurea costus，Houttuynia cordata，and Saxifraga stolonifera，while Epimedium brevicornu exhibited stronger tolerance to As.At low concentrations，Cd promoted the growth of Houttuynia cordata but inhibited it at higher concentrations.Under combined pollution，the growth of Saussurea costus and Saxifraga stolonifera was significantly inhibited，indicating stronger combined toxicity.Houttuynia cordata showed high Cd and As absorption capacities under both single and combined pollution，while Epimedium brevicornu absorbed Cd more efficiently in roots but less efficiently in shoots.In terms of Cd translocation efficiency，Saussurea costus exhibited the highest translocation coefficient (0.46) under Cd alone treatment，while no significant difference was observed among the medicinal plants under combined pollution，suggesting that combined pollution affects heavy metal translocation mechanisms.The As translocation efficiencies were similar across all treatments.This study provided critical data support for assessing the adaptability of traditional Chinese medicinal plants to cadmium and arsenic combined pollution and understanding their heavy metal translocation mechanisms.

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Last Update: 2025-05-12