| 光合菌对黄瓜光合及抗氧化同工酶的影响 |
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| 引用本文： | 宋兴舜,任静,哈尔滨,,刘雪梅,马双,杨传平,哈尔滨,.光合菌对黄瓜光合及抗氧化同工酶的影响[J].植物学报,2009,44(5):587-593. |
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| 作者姓名： | 宋兴舜 任静 哈尔滨 刘雪梅 马双 杨传平 哈尔滨 |
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| 作者单位： | 1 东北林业大学生命科学学院遗传学科, 哈尔滨 150040; 2 林木遗传改良与生物技术教育部重点实验室(东北林业大学), 哈尔滨 150040; 3 东北农业大学成栋学院生物食品系, 哈尔滨 150030 |
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| 基金项目： | 国家自然科学基金,黑龙江省博士后基金,东北农业大学青年科研基金 |
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| 摘 要： | 以2种基因型的黄瓜(Cucumis sativus)为材料, 研究光合菌(PSB)的喷施对植物生物量、净光合速率(Pn)、叶片PSII 的最大光化学效率(Fv/Fm)及抗氧化同工酶代谢的影响。结果表明, 喷施PSB均能诱导2种基因型黄瓜的生物量显著增加, 并伴随Pn的显著提高。但是, 2种基因型黄瓜的Fv/Fm并不受PSB喷施的影响; PSB能使总过氧化物歧化酶(SOD)和抗坏血酸过氧化酶(APX)活性提高, 并使它们的多数同工酶的活性上调, 这些同工酶活性的增加在叶绿体中表现更为明显(如 Cu/Zn-SOD、Fe-SOD 和 sAPX)。研究结果表明, PSB能通过增强黄瓜抗氧化酶体系的活性改善植株的抗氧化能力, 从而在植株的生长和光合作用方面起到促进作用。
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| 关 键 词： | 黄瓜 同工酶 光合作用 光合菌 |
| 收稿时间： | 2008-12-18 |
| 修稿时间： | 2009-02-22 |
Effects of Photosynthetic Bacteria on Photosynthesis and Antioxidative Isoenzymes in Cucumber (Cucumis sativus) |
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| Xingshun Song,Jing Ren,Xuemei Liu,Shuang Ma,Chuanping Yang.Effects of Photosynthetic Bacteria on Photosynthesis and Antioxidative Isoenzymes in Cucumber (Cucumis sativus)[J].Bulletin of Botany,2009,44(5):587-593. |
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| Authors: | Xingshun Song Jing Ren Xuemei Liu Shuang Ma Chuanping Yang |
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| Institution: | 1Department of Genetics, College of Life Science, Northeast Forestry University, Harbin 150040, China; 2Key Laboratory of Forest Tree Genetic Improvement and Biotechnology (Northeast Forestry University), Ministry of Education, Harbin 150040, China |
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| Abstract: | We examined the net photosynthetic rate (Pn), the maximal photochemical efficiency of PSII (Fv/Fm) and the activities of antioxidant isoenzymes in cucumber (Cucumis sativus) w ith or without photosynthetic bacteria (PSB) application. PSB spraying resulted in a significant increase in fresh weight and leaf area for both genotypes of cucumber plants, accompanied by a marked increase of Pn. However, Fv/Fm showed negligible changes. Exogenous PSB also increased activities of total superoxide dismutase (SOD) and ascorbate peroxidase (APX) , and a general increase of their isoenzymes. The increased level in Cu/Zn-SOD, Fe-SOD and stroma APX (sAPX) was most significant in chloroplasts. These results implied that PSB played a favorable role in growth and photosynthesis and improved hardiness in cucumber by enhancing antioxidant enzyme activities. |
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| Keywords: | , |
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