| 铅胁迫下不同茶树的生理响应及其亚细胞水平铅分布特性分析 |
| |
| 引用本文： | 叶江华,贾小丽,陈晓婷,林舜贤,李远华.铅胁迫下不同茶树的生理响应及其亚细胞水平铅分布特性分析[J].中国农业科技导报,2017,19(11):92-99. |
| |
| 作者姓名： | 叶江华 贾小丽 陈晓婷 林舜贤 李远华 |
| |
| 作者单位： | 1.武夷学院生态与资源工程学院, 福建省生态产业绿色技术重点实验室, 福建 武夷山 354300;
2.武夷学院茶与食品学院, 福建 武夷山 354300; 3.福建农林大学生命科学学院,
福建省农业生态过程与安全监控重点实验室, 福州 350002; 4.龙岩学院生命科学学院, 福建 龙岩 364012 |
| |
| 基金项目： | 教育部博士后科学基金项目（2016M600493）；福建省自然科学基金青年基金项目（2017J05057）；福建省生态产业绿色技术重点实验室开放课题基金项目(WYKF2016-6)；福建省“2011协同创新中心”中国乌龙茶产业协同创新培育专项（201310）；福建省中青年教师教育科研项目（JAT160504）；龙岩学院人才引进项目（LB2015001）资助。 |
| |
| 摘 要： | 为了分析不同茶树对Pb胁迫的生理响应及其组织亚细胞Pb分布特性,采用盆栽种植法,以铁观音、肉桂两种茶树为材料进行了分析,以期为重金属对茶树毒害机理和茶树对重金属的自我防御研究提供理论依据。结果表明:随着Pb胁迫浓度的增加,茶树叶片超氧化物歧化酶(superoxide dismutase,SOD)、过氧化物酶(peroxidase,POD)、过氧化氢酶(catalase,CAT)活性呈现下降趋势,且肉桂对Pb胁迫的耐受性高于铁观音;相同浓度Pb胁迫下,两种茶树不同组织亚细胞中的总Pb含量显著差异;此外,Pb胁迫下,为降低Pb~(2+)毒害,铁观音茶树表现为提高植物细胞溶质与细胞器中的Pb~(2+)比例,肉桂茶树表现为增加植物细胞壁中的Pb~(2+)结合率。可见,Pb胁迫下,不同茶树的解毒方式存在差异。
|
| 关 键 词： | 茶树 铅胁迫 生理特性 亚细胞 分布特征 |
Physiological Response and Subcellular
Distribution in Different Tea Plants Under Pb Stress |
| |
| YE Jianghua,JIA Xiaoli,CHEN Xiaoting,LIN Shunxian.Physiological Response and Subcellular
Distribution in Different Tea Plants Under Pb Stress[J].Journal of Agricultural Science and Technology,2017,19(11):92-99. |
| |
| Authors: | YE Jianghua JIA Xiaoli CHEN Xiaoting LIN Shunxian |
| |
| Institution: | 1.Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resource Engineering,
Wuyi University, Fujian Wuyishan 354300; 2.College of Tea and Food Science, Wuyi University, Fujian Wuyishan 354300;
3.Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian
Agriculture and Forestry University, Fuzhou 35002; 4.College of Life Sciences, Longyan University,
Fujian Longyan 364012, China |
| |
| Abstract: | In order to analyze physiological response to Pb stress and Pb distribution characteristics in subcellula tissues of different tea plants, this paper did research taking Tieguanyin and Rougui as materials by pot planting method, so as to provide theoretical basis for studying toxicity mechanism of heavy metal to tea plants and for self-defense of tea plants. The results showed that activities of leaf blade superoxide dismutase(SOD), peroxidase(POD), catalase (CAT) declined with the increase of Pb concentration, and the tolerance of Rougui to Pb stress was higher than that of Tieguanyin. There was no significant differences between the total Pb contents in subcellula tissues of the 2 tea plants under the same concentration of Pb stress. In addition, Tieguanyin increased Pb2+ propertion in cytosol and organelles to reduce Pb2+ toxicity, while Rougui mainly improved binding ratio of Pb2+. Therefore, there was different detoxification patterns for different tea plants under Pb stress. |
| |
| Keywords: | tea plant Pb stress physiological characteristics subcellular fraction distribution characteristics |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国农业科技导报》浏览原始摘要信息 |
| 点击此处可从《中国农业科技导报》下载免费的PDF全文 |
|
