A newly discovered cadmium hyperaccumulator——<i>Aster subulatus</i> Michx.
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چکیده
PDF HTML阅读 XML下载 导出引用 引用提醒 一种新发现的镉超积累植物--钻叶紫菀(Aster subulatus Michx.) DOI: 10.5846/stxb202203160639 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 广西自然科学基金项目（2020GXNSFAA259051）；广西农业科学院科技发展基金项目（桂农科2021JM30，桂农科2021JM117） A newly discovered cadmium hyperaccumulator——Aster Michx. Author: Affiliation: Fund Project: 摘要 | 图/表 访问统计 参考文献 相似文献 引证文献 资源附件 文章评论 摘要:通过野外调查和温室营养液砂培试验，发现并鉴定出钻叶紫菀（Aster Michx.）是一种新的镉（Cd）超积累植物。调查结果发现，钻叶紫菀对土壤中高含量的Cd有很强的忍耐、吸收和积累能力，其地上部茎、叶Cd含量分别为90.0-150.7mg/kg和119.8-172.6mg/kg，平均值分别为132.8mg/kg和139.2mg/kg。砂基营养液培养试验证明，钻叶紫菀对生长介质中的Cd有很强的忍耐能力，当生长介质中Cd浓度高达150mg/L时，植株仍生长正常，其株高与对照相比无显著差异；地上部Cd含量及其积累量均随生长介质中Cd浓度的增加而增加，当生长介质中Cd浓度为120mg/L时，地上部茎Cd含量和积累量达到最高值，分别为5672.50mg/kg、4.93mg/株。结果表明，钻叶紫菀是一种新的Cd超积累植物，为今后探明植物超积累Cd的机理和Cd污染土壤的植物修复提供一种新的种质资源。 Abstract:Aster (AsM) was and identified asa new (Cd) hyperaccumulatorthrough field investigation andexperiment of sand-based nutrient solution culture in greenhouse. The investigationresults showed that AsM had strong tolerance, absorption accumulation ability to high content Cd soil, stem leaf above-ground parts were 90.0-150.7mg/kg 119.8-172.6mg/kg, respectively, with mean values 132.8mg/kg 139.2mg/kg, respectively.The experiment demonstrated a tolerance the growth medium. When concentration up 150mg/L medium, plants still grew normally, there no significant difference between plant height control. shoot gradually increased asCd concentrationincreased reached 120mg/L highest value, which 5672.50mg/kg 4.93mg/plant, respectively. results suggested species hyperaccumulator, provided germplasm resource for future studying mechanism hyperaccumulation phytoremediation contaminated soil.
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ژورنال
عنوان ژورنال: Acta Ecologica Sinica
سال: 2023
ISSN: ['1000-0933', '1872-2032']
DOI: https://doi.org/10.5846/stxb202203160639