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当前位置: 首页 > 文章 > 水涝胁迫下烟草对水杨酸和硝普钠的生理响应 云南农业大学学报(自然科学) 2018 (4) 624-631
Position: Home > Articles > Physiological Responses of Tobacco to Salicylic Acid and Sodium Nitroprusside under Waterlogging Stress Journal of Yunnan Agricultural University(Natural Science) 2018 (4) 624-631

水涝胁迫下烟草对水杨酸和硝普钠的生理响应

作  者：
张永福;王定康;蒋淑萍;郑旴;牛燕芬;靳松
单  位：
昆明学院农学院
关键词：
水涝胁迫;烟草;水杨酸;硝普钠;生理响应
摘  要：
【目的】为了探明涝害胁迫下烟草对水杨酸(SA)和硝普钠(SNP)的生理响应,揭示SA和SNP对提高烟草耐涝性的生理机制。【方法】通过人工模拟水涝胁迫,研究SA和SNP单独和复合处理对烟草根冠比、根系活力、叶绿素含量、渗透调节物质及膜脂过氧化系统的影响。【结果】水涝胁迫下,SA和SNP可提高根冠比和根系活力,减缓叶绿素和类胡萝卜素含量的下降幅度;使叶片积累更多的可溶性糖、可溶性蛋白质和游离脯氨酸,增强细胞的渗透调节能力。SA和SNP还能提高涝害短期胁迫下SOD和POD的活性,延缓长期胁迫下酶活性的下降,降低过氧化氢的含量和氧自由基产生速率,进而降低丙二醛含量和相对电导率,增强烟草对水涝胁迫的适应性。【结论】生产上可用SA和SNP复合处理来缓解水涝胁迫对烟草的伤害,SA和SNP复合处理的效果最佳。
译  名：
Physiological Responses of Tobacco to Salicylic Acid and Sodium Nitroprusside under Waterlogging Stress
作  者：
ZHANG Yongfu;WANG Dingkang;JIANG Shuping;ZHEN Xu;NIU YanFen;JIN Song;School of Agriculture, Kunming University;Key Laboratory of Special Biological Resource Development and Utilization of Universities in Yunnan Province;
单  位：
ZHANG Yongfu%WANG Dingkang%JIANG Shuping%ZHEN Xu%NIU YanFen%JIN Song%School of Agriculture, Kunming University%Key Laboratory of Special Biological Resource Development and Utilization of Universities in Yunnan Province
关键词：
waterlogging stress;;tobacco;;salicylic acid;;sodium nitroprusside;;physiological response
摘  要：
[Purpose]The physiological response of tobacco to salicylic acid(SA) and sodium nitroprusside(SNP) under waterlogging stress was investigated, and the physiological mechanism of SA and SNP to improve the waterlogging tolerance of tobacco was revealed.[Method]Through artificial simulation of waterlogging stress, the effect of SA and SNP only and combined treatments on the tobacco root shoot ratio, root activity, chlorophyll content, osmolytes and lipid peroxidation system were studied.[Result]Under waterlogging stress, SA and SNP could improve the root shoot ratio and root vigor and slow down the decrease of chlorophyll and carotenoid contents; it could increase the cumulation of soluble sugar, soluble protein and free proline, and enhance the osmotic adjustment ability. SA and SNP could improve SOD and POD activities under short-term waterlogging stress,delay the decrease of the enzyme activities under long-term stress, reduce the content of hydrogen peroxide and oxygen free radical production rate, and further decrease MDA content and relative conductivity, enhance tobacco to waterlogging stress adaptability.[ Conclusion] The production is available on the SA and SNP combined treatment to alleviate the waterlogging stress on tobacco harm, SA and SNP combined treatment has the best effect.

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