| UV-B辐射胁迫对大豆幼苗内源激素的影响 |
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| 引用本文： | 张亚丽,周青.UV-B辐射胁迫对大豆幼苗内源激素的影响[J].地球与环境,2009,37(2). |
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| 作者姓名： | 张亚丽 周青 |
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| 作者单位： | 江南大学工业生物技术教育部重点实验室,江苏,无锡,214122;江南大学环境与土木工程学院,江苏,无锡,214122 |
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| 基金项目： | 江苏省教育厅“高等学校大学生实践创新训练”(20070730)项目资助 |
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| 摘 要： | 为了探索UV-B辐射胁迫对大豆幼苗内源激素的影响,试验以大豆幼苗为材料,采用水培实验的方法研究了UV-B辐射胁迫对大豆幼苗生长素(IAA)、生长素氧化酶(IAAO)、脱落酸(ABA)、赤霉素(GA)的影响.结果表明,UV-B辐射(T1:0.15W.m-2和T2:0.45 W.m-2)胁迫下,大豆幼苗IAAI、AAO、ABA、GA含量在胁迫期(1~5 d)和恢复期(6~11 d)分别呈现"先下降后有所回升"、"先升后降再升"、"先升后降"、"下降"趋势.进而从内源激素层面表明了UV-B辐射伤害大豆幼苗的机理效应。
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| 关 键 词： | UV-B辐射 大豆幼苗 内源激素 |
Effect of Ultraviolet-B Stress on Endogenous Hormone in Soybean Seedlings |
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| ZHANG Ya-li,ZHOU Qing.Effect of Ultraviolet-B Stress on Endogenous Hormone in Soybean Seedlings[J].Earth and Environment,2009,37(2). |
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| Authors: | ZHANG Ya-li ZHOU Qing |
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| Institution: | Key Laboratory of Industrial Biotechnology;Ministry of Education;Jiangnan University;Wuxi 214122;China;School of Environmental and Civil Engineering;China |
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| Abstract: | The dynamic state of endogenous hormone in soybean seedlings was investigated for a further demonstration of alleviating the damage caused by ultraviolet UV-B radiation in soybean seedlings under UV-B stress.Using hydroponics culture,the effects of lanthanum on the contents of endogenous hormone under elevated ultraviolet-B radiation(280～320 nm) were studied.The results showed the contents of indole-3-acetic acid(IAA) in soybean seedlings with UV-B treatment during the stress and convalescent period decreased initially and then increased,compared with the control;acetic acid oxidase(IAAO) activity increased at first(the 1st to the 5th day) and then decreased(the 6th to the 11th day).A similar change in abscisic acid(ABA) and acetic acid oxidase(IAAO) contents in soybean seedlings occurred;gibberellic acid(GA) contents decreased during the experiment compared with the control.And then the mechanism of damage of soybean seedlings by UV-B radiation from the level of endogenous hormone was shown. |
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| Keywords: | ultraviolet-B radiation soybean seedling endogenous hormone |
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