文献类型：期刊文献

英文题名：Comparative tolerance and phytoremediation potential of four Lagerstroemia indica cultivars under cadmium stress

作者：Li, Jing[1] Li, Yilong[1] Zi, Doudou[1] Zhai, Feifei[1] Deng, Shurong[2] Zhang, Yunxing[1]

第一作者：Li, Jing

通信作者：Zhang, YX[1]

机构：[1]Henan Polytech Univ, Sch Architectural & Artist Design, Jiaozuo 454000, Peoples R China;[2]Chinese Acad Forestry, Inst Forestry, Beijing 100091, Peoples R China

年份：2025

卷号：16

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001663251800001)】；

基金：This research was supported by the National Natural Science Foundation of China (Grant No. 31700533) and the Fundamental Research Funds for the Universities of Henan Province (NSFRF210403; SKJYB2022-15).

语种：英文

外文关键词：Woody ornamentals; Lagerstroemia indica; Cadmium tolerance; Cadmium accumulation; Phytoextraction; Phytostabilization

摘要：Woody ornamentals hold significant promise for phytoremediation. However, the cadmium (Cd) tolerance and accumulation ability of the commonly planted Lagerstroemia indica, have not been insufficiently studied. This study evaluated four L. indica cultivars ('Red Rocket', 'Pink Velour', 'Dynamite', and 'Black Diamond') under soil Cd stress (0, 10, 50, and 100 mgkg(- 1)) in an 80-day pot experiment. Significant intraspecific variation in Cd tolerance was observed, reflected in distinct growth and Cd accumulation strategies. 'Dynamite' showed a hormetic growth response at 10 mgkg(- 1) Cd but suffered complete mortality at 100 mgkg(- 1) Cd, indicating low tolerance and limited phytoextraction potential. In contrast, 'Red Rocket' and 'Black Diamond' demonstrated a consistent phytostabilization strategy. They maintained stable growth (tolerance index, TI > 1.0) at the highest Cd level (100 mgkg(- 1)), characterized by effective root Cd retention with high root bioconcentration factors (BCFs > 1.0) and low translocation factors (TFs < 1.0). 'Pink Velour' displayed a plastic response. It showed a balanced root-shoot distribution (TF > 1.0) at 50 mgkg(- 1) Cd, but under high stress (100 mgkg(- 1)), it showed pronounced root sequestration (TF < 1.0). This confirms phytostabilization as its primary tolerance mechanism. These cultivar-specific strategies highlight the potential of selecting specific L. indica cultivars for the phytomanagement of Cd-contaminated soils.