| 蔡启航,张 宇,罗学刚.毛竹对锰胁迫土壤的响应研究[J].广东农业科学,2023,(6):- |
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毛竹对锰胁迫土壤的响应研究 |
| Response of moso bamboo to manganese stress in soil |
| 投稿时间：2023-03-14 修订日期：2023-07-12 |
| DOI： |
| 中文关键词: 毛竹 锰 植物修复 生理响应 |
| 英文关键词: Moso bamboo Manganese Phytoremediation Physiological response |
| 基金项目:国家国防基础研究项目(NO.16ZG6101);国家核设施退役及放射性废物治理科研重点项目(NO.14ZG6101) |
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| 中文摘要: |
| 【目的】为了探究毛竹 （Phyllostachys pubescens） 对锰污染土壤的修复效果与生理响应。【方法】以三年生毛竹为试材，通过测定毛竹植物学性状、光合参数、叶绿素荧光参数等指标，分析在添加不同质量浓度 0、1 000、2 000、4 000 mg/kg 土壤锰胁迫下毛竹的生理响应与重金属富集特性。【结果】在4 000 mg/kg 的锰胁迫土壤下，与对照相比，毛竹的株高、叶长、叶宽和基径分别下降22.6%、25.9%、21.3%和26.7%，毛竹叶片的水分利用率显著降低30.6%，光化学淬灭指数 （qP）与非化学淬灭指数 （qN ）分别下降29.8%和20.7%，毛竹的过氧化物酶与过氧化物酶活性分别下降39.4%和22.6%。0、1000、2 000、4 000 mg/kg浓度的锰胁迫土壤下，毛竹地上部 （茎和叶） 对锰的平均富集量分别为1 098.6、2 336.4、3 530.9、5 370.4 mg/kg，毛竹对锰的转移系数分别为1.59、3.83、3.56和4.17。【结论】高浓度的锰胁迫对毛竹的植物学性状有一定的抑制作用，但毛竹依旧能生长，对锰胁迫土壤有很好的富集能力。为今后在重金属污染污染治理和植物修复领域的研究提供一定的参考。 |
| 英文摘要: |
| 【Objective】In order to investigate the remediation effect and physiological response of moso bamboo （Phyllostachys pubescens） to manganese contaminated soil.【Method】In this paper, the physiological response and heavy metal enrichment characteristics of moso bamboo were analyzed by measuring the phytological traits, photosynthetic parameters and chlorophyll fluorescence parameters of moso bamboo at different mass concentrations （0, 1 000, 2 000 and 4 000 mg/kg） of Mn in a stressed soil.【Result】Under 4 000 mg/kg Mn stress, the plant height, leaf length, leaf width and basal diameter of moso bamboo decreased by 22.6%, 25.9%, 21.3% and 26.7% , respectively, compared to the control, and the water utilization of moso bamboo leaves decreased significantly by 30.6%, the photochemical quenching index （qP） and non-chemical quenching index （qN） decreased by 29.8% and 20.7% , respectively. peroxidase （POD） activity （39.4%） and peroxidase （CAT） activity （22.6%）, respectively, were reduced by 29.8% and 20.7%. Under Mn-stressed soils supplemented with 0, 1 000, 2 000 and 4 000 mg/kg mass concentrations, the average above-ground（stem and leaves）Mn enrichment of moso bamboo was 1098.6, 2336.4, 3530.9 and 5370.4 mg·kg-1, respectively, with Mn transfer coefficients of 1.59, 3.83, 3.56 and 4.17, respectively.【Conclusion】Manganese stress at high mass concentrations has an inhibitory effect on the botanical traits of the moso bamboo, but the moso bamboo is still able to grow and has a good enrichment capacity for manganese stressed soils. It can be used as a new plant for manganese stressed soils. This study provides some reference value for future research in the field of pollution management and phytoremediation of heavy metal pollution. |
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