| 外源蔗糖，Vc对铬诱导的拟南芥主根生长抑制和过氧化物积累的缓解作用 |
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| 引用本文： | 于天昊,洪宇,谢庆恩,赵旭华,李霞.外源蔗糖，Vc对铬诱导的拟南芥主根生长抑制和过氧化物积累的缓解作用[J].中国农学通报,2010,26(6):289-292. |
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| 作者姓名： | 于天昊 洪宇 谢庆恩 赵旭华 李霞 |
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| 作者单位： | 1. 石家庄市外语学校,石家庄,050000
2. 农业资源研究中心,中国科学院遗传与发育生物学研究所,石家庄,050021 |
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| 基金项目： | 中国科学院"百人计划"基金 |
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| 摘 要： | 通过水培实验研究重金属铬胁迫下拟南芥主根生长和过氧化物积累情况，以及外源施加蔗糖和维生素C对毒害的缓解作用。结果发现随着铬浓度的升高，植物主根生长受到了明显的抑制，胎盘兰染色表明高剂量的铬造成了主根的根尖细胞的死亡。进一步DAB染色发现铬胁迫诱导植物根尖大量积累过氧化氢，而在胁迫培养基中加入蔗糖和维生素C都可显著改善植物根的生长、减低过氧化氢的积累，并减少铬诱导的根尖细胞的死亡。上述结果表明铬胁迫诱导的拟南芥主根生长的抑制很可能是由于根尖细胞过氧化物积累所致。
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| 关 键 词： | 小根蒜提取物 小根蒜提取物 香椿 保鲜 天然保鲜剂 |
| 收稿时间： | 2009-10-23 |
| 修稿时间： | 2009-11-03 |
Exogenous Sucrose,Vitamin C Protects Arabidopsis from Chromic-induced Root Growth Inhibition which is Likely Mediated by Hydrogen Peroxide Production |
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| Yu Tianhao,Hong Yu,Xie Qing'en,Zhao Xuhua,Li Xia.Exogenous Sucrose,Vitamin C Protects Arabidopsis from Chromic-induced Root Growth Inhibition which is Likely Mediated by Hydrogen Peroxide Production[J].Chinese Agricultural Science Bulletin,2010,26(6):289-292. |
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| Authors: | Yu Tianhao Hong Yu Xie Qing'en Zhao Xuhua Li Xia |
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| Institution: | 1Shjiazhuang Foreign Language School, Shijiazhuang 050000; 2Center for Agricultural Resources Research, Institute of C.enetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021) |
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| Abstract: | The effect of sucrose and Vc on H2O2 accumulation and root growth inhibition ofArabidopsis were investigated in hydroponics. We found that Cr inhibits root elongation with increasing concentrations of Cr. Meristematic regions and the elongation zones were greatly shortened, suggesting cell division and cell elongation are all affected. Plant roots died of Cr overdose. DAB staining analysis showed that hydrogen peroxide (H2O2) accumulated in root tips when the seedlings were treated with Cr. Furthermore, we ... |
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| Keywords: | Arabidopsis thaliana chromic hydrogen peroxide vitamin sucrose |
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