热带作物学报2017，Vol.38Issue(9)：1607-1613,7.DOI:10.3969/j.issn.1000-2561.2017.09.005
茶树对铅胁迫的响应及其组织铅化学形态变化研究
Biological Responses and Pb Speciation in Tissues After Pb Exposure of Tea Plants
摘要
Abstract
In order to analyze the physiological responses of different tea trees to Pb stress and accumulation characteristics of Pb with different chemical forms in different tissues of tea trees,photosynthesis rate,chlorophyll content,Pb content in different tissues and Pb content with different chemical forms of Tieguanyin and Rougui tea plants were measured under Pb stess with different concentrations in pot culture.Results showed that the photosynthesis rate and chlorophyll content of tea plants descended with the increase of Pb stress concentration,but the falling range of Tieguanyin was higher than Rougui as compared with the control.At the same concentration of Pb stress,Pb contents in tea plant roots and leaves performed root＞ leaf.Analysis of Pb contents with different chemical forms showed that the content percentages of exchangeable Pb,carbonate-bound Pb,residual Pb from two tea tree roots had downward trends,while organic-bound Pb and Pb with Fe-Mn oxidation state had upward trends as stress concentration increased.Content percentages of exchangeable Pb,carbonate-bound Pb,organicbound Pb and Pb with Fe-Mn oxidation state in the leaf appeared to be rising,while residual Pb declined.Further analysis indicated that detoxification patterns of different tea plant varieties exhibited variance under Pb stress.关键词
茶树/Pb胁迫/化学形态/光合生理指标Key words
Tea plant/Pb stress/chemical form/physiological characteristics分类
农业科技引用本文复制引用
叶江华,张清旭,王海斌,吴承祯,贾小丽,陈晓婷,李远华,王飞权,卢莉,郑茂钟,胡永乐..茶树对铅胁迫的响应及其组织铅化学形态变化研究[J].热带作物学报,2017,38(9):1607-1613,7.基金项目
国家重点研发计划(No.2016YFD0200900) （No.2016YFD0200900）
教育部博士后科学基金(No.2016M600493) （No.2016M600493）
福建省自然科学基金青年基金(No.2017J05057)福建省生态产业绿色技术重点实验室开放课题基金资助项目(No.WYKF2016-6) （No.2017J05057）
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(No.201310) （No.201310）
福建省中青年教师教育科研项目(No.JAT160504) （No.JAT160504）
武夷学院“人才引进项目”(No.YJ201701) （No.YJ201701）
武夷学院科研基金资助项目(No.XD201502). （No.XD201502）
