| 茶氨酸诱导烟草抵御低钾胁迫的研究 |
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| 引用本文： | 刘炎红,单丹丹,刘松,尤本武,郭家明,陈学平.茶氨酸诱导烟草抵御低钾胁迫的研究[J].安徽农业大学学报,2016,43(2):282-287. |
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| 作者姓名： | 刘炎红 单丹丹 刘松 尤本武 郭家明 陈学平 |
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| 作者单位： | 安徽省烟草公司烟叶处,合肥,230022;中国科学技术大学烟草与健康研究中心,合肥,230026 |
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| 基金项目： | 安徽中烟工业有限责任公司科技项目“基于氯化血红素的高效生长调节剂的研制”（0920140421003）资助。 |
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| 摘 要： | 通过施用茶氨酸来减轻低钾胁迫对烟草幼苗的毒害,并从抗氧化系统、钾离子含量及相关基因来探讨其作用机理。结果表明,在低钾胁迫下,0.1和0.2 mmol·L-1茶氨酸均能促进烟苗根长、鲜重及叶绿素含量的显著增加;外源茶氨酸预处理不仅能显著提高低钾胁迫下烟草幼苗脯氨酸、谷胱甘肽(GSH)含量,还能增强烟草幼苗抗坏血酸还原酶(APX)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,降低过氧化氢(H2O2)和丙二醛(MDA)含量。此外,茶氨酸还能促进烟草幼苗对钾离子的吸收。半定量PCR结果表明,茶氨酸预处理可以诱导低钾胁迫下烟草幼苗Nt LKS1、Nt KC和Nt KT1上调。综上,茶氨酸缓解烟草幼苗低钾胁迫是通过激发植物体抗氧化系统、促进钾离子的吸收及相关基因上调的综合结果。
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| 关 键 词： | 茶氨酸 低钾胁迫 烟草 |
| 收稿时间： | 2015/11/18 0:00:00 |
Protective role of theanine on tobacco seedlings under low potassium stress |
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| LIU Yanhong,SHAN Dandan,LIU Song,YOU Benwu,GUO Jiaming and CHEN Xueping.Protective role of theanine on tobacco seedlings under low potassium stress[J].Journal of Anhui Agricultural University,2016,43(2):282-287. |
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| Authors: | LIU Yanhong SHAN Dandan LIU Song YOU Benwu GUO Jiaming and CHEN Xueping |
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| Institution: | Department of Tobacco Leaf, Anhui Tobacco Company, Hefei 230022,Tobacco and Health Research Center, University of Science and Technology of China, Hefei 230051,Tobacco and Health Research Center, University of Science and Technology of China, Hefei 230051,Tobacco and Health Research Center, University of Science and Technology of China, Hefei 230051,Tobacco and Health Research Center, University of Science and Technology of China, Hefei 230051 and Tobacco and Health Research Center, University of Science and Technology of China, Hefei 230051 |
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| Abstract: | |
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| Keywords: | theanine low potassium stress tobacco |
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