[1]张卫杰,徐博涵,梁路,等.硅对菜心镉吸收及抗氧化酶和AsAGSH循环关键酶活性的影响[J].江苏农业科学,2026,54(16):270-276.
 Zhang Weijie,et al.Influence of silicon on cadmium absorption and activities of antioxidant enzyme and AsAGSH cycle key enzyme in Chinese flowering cabbage[J].Jiangsu Agricultural Sciences,2026,54(16):270-276.
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硅对菜心镉吸收及抗氧化酶和AsAGSH循环关键酶活性的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第54卷
期数:
2026年第16期
页码:
270-276
栏目:
农业资源与环境
出版日期:
2026-08-20

文章信息/Info

Title:
Influence of silicon on cadmium absorption and activities of antioxidant enzyme and AsAGSH cycle key enzyme in Chinese flowering cabbage
作者:
张卫杰; 徐博涵; 梁路; 田开月; 尹坤; 张东辉; 黄玉波
周口市农业科学院,河南周口 466001
Author(s):
Zhang Weijie; et al
关键词:
镉胁迫; 硅; 菜心; 酶活性; AsA-GSH循环; 抗氧化酶
Keywords:
-
分类号:
X53
DOI:
-
文献标志码:
A
摘要:
为探究硅(Si)对镉(Cd)胁迫下菜心的缓解机制,以菜心(Brassica rapa L.)为研究材料,分析Cd胁迫下,外源叶施Si对菜心的缓解作用。采用水培试验,添加1、5 μmol/L Cd胁迫,叶面施用5 μmol/L Si溶液 21 d 后,测定菜心生物量、Cd浓度、抗氧化酶[包括超氧化物歧化酶(SOD)和过氧化氢酶(CAT)]活性、AsA-GSH循环关键物质[包括抗坏血酸(AsA)和还原性谷胱甘肽(GSH)]含量及酶活性[包括抗坏血酸过氧化物酶(APX)、谷胱甘肽还原酶(GR)和脱氢抗坏血酸还原酶(DHAR)]。结果表明,5 μmol/L Cd处理下,施Si较未施处理地上部、根部生物量显著增加25.9%、28.9%,说明施Si能缓解Cd对菜心的胁迫作用,促进菜心生长。另外,Cd胁迫下,施Si不同程度地减少了菜心地上部和根部的Cd吸收。从施Si对菜心的抗氧化物质含量和AsA-GSH循环关键酶活性影响的结果来看,Cd胁迫下施Si处理组,植株抗氧化酶、AsA-GSH循环重要酶活性和抗氧化物质含量变化规律存在一定差异。结果表明,叶面施Si能有效提高Cd胁迫下的菜心地上部和根部的CAT、APX、DHAR活性,低浓度Cd胁迫下施Si对菜心SOD活性、GR活性、AsA含量、GSH含量影响不显著,而高浓度Cd胁迫下施Si能显著提高菜心抗氧化酶(SOD、CA、APX、GR、DHAR)活性及抗氧化物质(AsA、GSH)含量。说明施适量Si肥可调节菜心抗氧化酶活性及AsA-GSH循环系统,以缓解Cd胁迫作用,控制菜心地上部Cd含量在安全限量范围内,通过此结论可为中轻度镉污染土壤中蔬菜合理施用Si肥提供科学依据。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2025-12-17
基金项目:河南省科技研发计划联合基金(编号:235101610071);周口市科技攻关计划(编号:2021GG02090)。
作者简介:张卫杰(1990—),男,河南周口人,硕士,研究实习员,研究方向为重金属迁移与转化。E-mail:1317282732@qq.com。
通信作者:黄玉波,硕士,副研究员,主要从事植物营养与高效施肥研究。E-mail:286932434@qq.com。
更新日期/Last Update: 2026-08-20