[1]田筱,涂德辉,周鹏,等.辣椒根系抵御镉胁迫的抗氧化酶及亚细胞镉分布的响应规律[J].江苏农业科学,2025,53(1):217-225.
Tian Xiao,et al.Response regularity of antioxidant enzymes and subcellular Cd distribution in pepper roots against Cd stress[J].Jiangsu Agricultural Sciences,2025,53(1):217-225.
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辣椒根系抵御镉胁迫的抗氧化酶及亚细胞镉分布的响应规律(PDF)
Tian Xiao,et al.Response regularity of antioxidant enzymes and subcellular Cd distribution in pepper roots against Cd stress[J].Jiangsu Agricultural Sciences,2025,53(1):217-225.
《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]
- 卷:
- 第53卷
- 期数:
- 2025年第1期
- 页码:
- 217-225
- 栏目:
- 园艺与林学
- 出版日期:
- 2025-01-05
文章信息/Info
- Title:
- Response regularity of antioxidant enzymes and subcellular Cd distribution in pepper roots against Cd stress
- 作者:
- 田筱1; 2; 涂德辉2; 周鹏2; 刘立波3; 李伟1; 肖玖军4; 5; 邢丹2
- 1.贵州大学农学院，贵州贵阳 550025； 2.贵州省农业科学院辣椒研究所，贵州贵阳 550025； 3.凯里学院大健康学院，贵州凯里 556011； 4.贵州大学资源与环境工程学院，贵州贵阳 550025； 5.贵州科学院山地资源研究所，贵州贵阳 550025
- Keywords:
- -
- 分类号:
- S641.301
- DOI:
- -
- 文献标志码:
- A
- 摘要:
- 为探究镉(Cd)胁迫下不同辣椒品种根部抗氧化响应及Cd的固持分布情况，以辣椒为研究对象，采用水培试验，分析不同Cd浓度(0、0.5、2.0 mg/L)胁迫下辣椒生长发育与不同胁迫时间(0.5、1、3、7 d)根系抗氧化酶活性的变化以及亚细胞、细胞壁多糖组分中Cd含量的分配规律。结果表明，与CK相比，用2.0 mg/L Cd处理7 d后，辣研101的根长、茎粗、株高、根系生物量分别减少了33.49%、15.43%、19.88%、46.72%，辣研201植株的相应指标也呈减少趋势。随着Cd浓度与胁迫时间的增加，辣椒根系积累的Cd含量呈增加趋势，Cd处理下辣椒根系积累的Cd含量是地上部积累的Cd含量的16.77倍以上。在不同胁迫时间下，Cd处理辣椒根系过氧化物酶(POD)、过氧化氢酶(CAT)活性以及丙二醛(MDA)含量均较CK有所提高。进一步研究发现，根系亚细胞Cd含量分布表现为细胞壁>可溶部分>细胞器，2个辣椒品种细胞壁的Cd相对占比达57.09%以上。细胞壁多糖组分中的Cd含量分布表现为果胶>半纤维素1>半纤维素2，2个辣椒品种根系细胞壁中果胶组分的Cd相对占比达57%以上，说明辣椒根系中细胞壁及其果胶组分是固持Cd的主要部位。
- Abstract:
- -
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备注/Memo
- 备注/Memo:
-
收稿日期：2024-02-28
项目基金：贵州省科技计划(编号：黔科合基础-ZK［2023］一般162)；贵州省重点项目(编号：黔科支撑合［2022］重点016号)；贵州省黔东南州基础研究项目(编号：黔东南科合基础［2023］01号)；贵州省农业科学院青年科技基金(编号：黔农科院青年科技基金［2021］22号)；贵州省高等学校设施蔬菜工程研究中心平台建设项目(编号：黔教技［2022］040号)；黔农科院青年基金［编号：(2022)14号］；贵州省科技支撑计划(编号：黔科合支撑［2020］1Y172号)。
作者简介：田筱(1997—)，女，贵州铜仁人，硕士研究生，从事辣椒安全生产方面的研究。E-mail：2536369632@qq.com。
通信作者：邢丹，博士，研究员，从事辣椒绿色生产方面的研究。E-mail：2004xingdan@163.com。
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