| 水杨酸对低温胁迫香蕉幼苗呼吸作用的影响 |
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| 引用本文： | 康国章,孙谷畴,王正询. 水杨酸对低温胁迫香蕉幼苗呼吸作用的影响[J]. 广西植物, 2004, 24(4): 359-362 |
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| 作者姓名： | 康国章 孙谷畴 王正询 |
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| 作者单位： | 河南农业大学国家小麦工程技术研究中心,河南,郑州,450002;中国科学院华南植物研究所,广东,广州,510650;中国科学院华南植物研究所,广东,广州,510650;广州大学生物系,广东,广州,510405 |
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| 基金项目： | 广州市重点资助项目 ( 1999 11)，中国科学院研究生院研究生科技创新项目 |
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| 摘 要： | 探讨了水杨酸 (salicylicacid ,SA)对低温胁迫香蕉幼苗叶片呼吸作用的影响。在常温下用 0 .5mmol/LSA水溶液处理香蕉幼苗 ,能明显提高香蕉幼苗的抗氰呼吸和细胞色素呼吸 ,增加总呼吸量 ,提高产热量 ;在随后 7℃低温胁迫与常温恢复期间SA预处理 ,能抑制总呼吸速率的下降 ,这种对总呼吸下降的抑制与此时细胞色素途径维持在较高的水平有关 ,而与抗氰呼吸无关。此时也未检测到SA预处理植株叶片产热量增加的现象
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| 关 键 词： | 水杨酸 呼吸作用 香蕉 低温胁迫 |
| 文章编号： | 1000-3142(2004)04-0359-04 |
| 修稿时间： | 2003-07-02 |
Effect of salicylic acid on respiration of chilling-stressed banana seedlings |
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| KANG Guo-zhang ,,SUN Gu-chou ,WANG Zheng-xun. Effect of salicylic acid on respiration of chilling-stressed banana seedlings[J]. Guihaia, 2004, 24(4): 359-362 |
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| Authors: | KANG Guo-zhang SUN Gu-chou WANG Zheng-xun |
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| Affiliation: | KANG Guo-zhang 1,2,SUN Gu-chou 2,WANG Zheng-xun 3 |
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| Abstract: | Effect of salicylic acid (SA) on the respiration of the chilling-stressed banana plants was investigated in this paper. Treatment of banana plant with 0.5 mmol/L SA hydroponic solution by form of foliar spray and root irrigation at 30/22 ℃ for 1 day raised the total respiration (Vt), which was related to the increase both in alternative pathway (ρ′Valt) and in cytochrome pathway (ρVcyt). During subsequent chilling stress at 7 ℃ and recovery periods, however, SA pretreatment inhibited the decrease in Vt and ρVcyt. But SA did not change ρ′Valt and heat production, indicating that the enhancement of SA on Vt could not be from ρ′Valt, but from ρVcyt. The mechanism of SA on Vt during chilling stress was explored. |
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| Keywords: | salicylic acid respiration banana chilling stress |
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