| 引用本文： |
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孙菲菲,曾小飚,梁敏玲,张翠娇,邱德全,邹蓉.不同浓度锰胁迫对向日葵幼苗叶片生理生化特性的影响[J].广西科学院学报,2021,37(1):8-12. [点击复制]
- SUN Feifei,ZENG Xiaobiao,LIANG Minling,ZHANG Cuijiao,QIU Dequan,ZOU Rong.Effects of Different Concentrations of Manganese Stress on the Biochemical Characteristics of Helianthus annuus L.Seedlings[J].Journal of Guangxi Academy of Sciences,2021,37(1):8-12. [点击复制]
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| 摘要: |
| 为研究锰胁迫对向日葵幼苗的影响，以向日葵幼苗为实验材料，通过沙培盆栽法研究不同Mn2+浓度胁迫下向日葵生长和生理生化特性的变化。结果显示：随着Mn2+浓度的增加，向日葵幼苗叶片中丙二醛（MDA）、可溶性糖（SS）以及游离脯氨酸（Pro）的含量都呈现上升趋势；而幼苗叶片叶绿素、蛋白质（Pr）含量则呈现先升高再下降的趋势。Mn2+浓度为100 mmol/L时，向日葵幼苗叶片的总叶绿素、叶绿素a和叶绿素b含量达到峰值，而后随着Mn2+浓度的继续增加而显著下降；Mn2+浓度为200 mmol/L时，蛋白质含量最高，之后急剧下降。综上可见，低浓度Mn2+对植株有显著的促进生长作用，细胞代谢加快；高浓度Mn2+对植株有显著的抑制作用，可导致细胞代谢紊乱，甚至植株死亡。向日葵可以种植在被低浓度重金属污染的土壤中，一方面可以加快土壤净化，另一方面可以促进植株的生长发育。 |
| 关键词: 锰胁迫 向日葵 幼苗期 生理生化特性 丙二醛 叶绿素 |
| DOI：10.13657/j.cnki.gxkxyxb.20210429.003 |
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| 基金项目:广西科技重大专项（桂科AA19254007-4），河池市科技攻关项目（河科AB198807），广西植物功能物质研究与利用重点实验室主任基金项目（ZRJJ2018-9，ZRJJ2018-10）和广西植物研究所基本业务费项目（桂植业21002，21012，21013）资助。 |
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| Effects of Different Concentrations of Manganese Stress on the Biochemical Characteristics of Helianthus annuus L.Seedlings |
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SUN Feifei1,2, ZENG Xiaobiao3, LIANG Minling3, ZHANG Cuijiao3, QIU Dequan3, ZOU Rong1
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| (1.Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi, 541006, China;2.Guilin Medical College, Guilin, Guangxi, 530000, China;3.College of Agriculture and Food Engineering, Baise University, Baise, Guangxi, 533000, China) |
| Abstract: |
| In order to explore the influence of manganese stress on Helianthus annuus L.seedlings, H.annuus L.seedlings were used as experimental materials to study the growth and physiological and biochemical characteristics of sunflower under different Mn2+ concentration stresses by sand culture potting method.The research results showed that with the increase of Mn2+ concentration, the content of malondialdehyde (MDA), soluble sugar (SS) and free proline (Pro) in H.annuus L.seedling leaves all showed an upward trend.The content of chlorophyll and protein (Pr) in seedling leaves showed a trend of first increasing and then decreasing.When the Mn2+ concentration was 100 mmol/L, the total chlorophyll, chlorophyll a and chlorophyll b contents in the leaves of H.annuus L.seedlings reached the peak, and then decreased significantly as the Mn2+ concentration continued to increase.When Mn2+ concentration was 200 mmol/L, the protein content was the highest, and then it decreased sharply.In summary, low concentration of Mn2+ can significantly promote plant growth and accelerate cell metabolism.High concentration of Mn2+ has a significant inhibitory effect on plants, which can cause cell metabolism disorders and even plant death.H.annuus L.can be planted in soil contaminated by low concentrations of heavy metals.On the one hand, it can accelerate soil purification, on the other hand, it can promote the growth and development of plants. |
| Key words: manganese stress Helianthus annuus L. seeding stage biochemical characteristics malondialdehyde chlorophyll |
