| 模拟酸雨对番木瓜叶片细胞膜透性和膜脂脂肪酸组分的影响 |
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| 引用本文： | 黄建昌,肖艳. 模拟酸雨对番木瓜叶片细胞膜透性和膜脂脂肪酸组分的影响[J]. 园艺学报, 2004, 31(5): 644-646 |
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| 作者姓名： | 黄建昌 肖艳 |
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| 作者单位： | (仲恺农业技术学院园艺系, 广州510225) |
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| 基金项目： | 广东省自然科学基金资助课题 (0 2 1917) |
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| 摘 要： | 研究了不同pH 值(4.5 、3.5 、3.0 、2.5) 的模拟酸雨对番木瓜叶片细胞膜透性和膜脂脂肪酸组分的影响。结果表明, 酸雨处理导致细胞膜透性、MDA 含量、脂氧合酶(LOX) 活性及K+ 、Ca2+ 、Mg2+ 渗出量显著上升, 膜脂肪酸组分中饱和脂肪酸组分增加, 不饱和脂肪酸组分及不饱和指数( IUFA)下降。用差异显著性检验结果为判量标准初步评价模拟酸雨对番木瓜叶片生理指标的影响阈值为pH 3.0 。
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| 关 键 词： | 番木瓜 酸雨 细胞膜透性 LOX 活性 膜脂肪酸 |
| 文章编号： | 0513-353X(2004)05-0644-03 |
| 收稿时间： | 2003-11-27 |
| 修稿时间： | 2004-01-12 |
Impact of Simulated Acid Rain on Permeability and Fatty Acid Composition in Leaves of Papaya Seedlings |
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| Huang Jianchang and Xiao Yan. Impact of Simulated Acid Rain on Permeability and Fatty Acid Composition in Leaves of Papaya Seedlings[J]. Acta Horticulturae Sinica, 2004, 31(5): 644-646 |
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| Authors: | Huang Jianchang and Xiao Yan |
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| Affiliation: | ( Department of Horticulture , Zhongkai Agrotechnical College , Guangzhou 510225 , China) |
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| Abstract: | Impact of simulated acid rain with various pH values (4.5 , 3.5 , 3.0 , 2.5) on leaf of papaya ( Carica papaya L. ) seedlings were studied. The results showed that permeability , MDA content ,LOX activity , leakage amount of K+ , Ca2+ and Mg2+ , and saturated fatty acid percentage in leaf increased with the decline of the pH value of simulated acid rain , unsaturated fatty acid percentage and IUFA decreased with the decline of the pH value of simulated acid rain. The injury threshold value of leaf to simulated acid rain was ≤3.0 by the standard of the result using significance tested with L1S1D. at 0.05 level. |
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| Keywords: | Papaya Simulated acid rain Permeability LOX activity Fatty acid composition |
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