Relationships between Leaf POD and PAL and the Resistance of Alfalfa Cultivars Against Powdery Mildew

doi:10.11733/j.issn.1007-0435.2007.04.016

›› 2007, Vol. 15 ›› Issue (4): 376-380.DOI: 10.11733/j.issn.1007-0435.2007.04.016

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Relationships between Leaf POD and PAL and the Resistance of Alfalfa Cultivars Against Powdery Mildew

XING Hui-qin^1,2, LI Min-quan^1,3, XU Bing-liang¹, LEI Yu-ming², MA Jian-cang⁴

1. College of Grass Industry Science, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China;
2. Department of Plant Science and Technique, Hexi University, Zhangye, Gansu Province 734000, China;
3. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou, Gansu Province 730070, China;
4. Zhangye Maize Seed Company, Zhangye, Gansu Province 734000, China

Received:2006-06-22 Revised:2007-05-18 Online:2007-08-15 Published:2007-08-15

过氧化物酶和苯丙氨酸解氨酶与苜蓿白粉病抗性的关系

邢会琴^1,2, 李敏权^1,3, 徐秉良¹, 雷玉明², 马建仓⁴

1. 甘肃农业大学草业学院, 兰州, 730070;
2. 河西学院植物科学技术系, 甘肃, 张掖, 734000;
3. 兰州大学干旱生态农业国家重点实验室, 兰州, 730070;
4. 甘肃省张掖市玉米原种场, 甘肃, 张掖, 734000

作者简介:邢会琴(1975- ),女,硕士研究生,讲师,从事植物病理学的教学和科研工作
基金资助:
甘肃省农委项目(0070719)资助

Abstract

Abstract: Responses of peroxidase(POD) and phenylalnine ammonia-lysae(PAL) of alfalfa seedling leaves were analyzed after inoculation with Erysiphe polygoni DC.The results show that the activities of PAL of non-inoculated(CK) were similar among cultivars,while the POD activities different significantly.The activities of POD in the susceptible cultivars increased more than that of resistant ones 7-13 d after inoculation with E.polygoni,and the changes were negatively correlated with the alfalfa resistance against powdery mildew,while the increasing rate of the activities of PAL in the susceptible was less than that of resistance ones 7-10 d after inoculation,and the changes were positively correlated with the resistance.It was concluded that the changes of POD and PAL activities in the inoculated leaves were closely correlated with the alfalfa resistance against powdery mildew.

Key words: Alfalfa powdery mildew, Peroxidase, Phenylalnine ammonia-lyase, Resistance

摘要： 以8个对白粉病有不同抗性的苜蓿品种(Medicgo sativa L.)为材料,研究人工接菌后叶片过氧化物酶(POD)和苯丙氨酸解氨酶(PAL)活性的变化及其与抗病性的关系。结果表明:未接菌的品种间PAL活性差异不显著,而POD活性则差异显著(P<0.05);感病品种POD活显著高于抗病品种;接种白粉病菌后,供试品种间叶片PAL活性和POD活性均升高,其中抗病品种间PAL活性升高幅度显著大于感病品种,其变化与病情指数呈负相关,而POD活性的变化则相反;POD活性和PAL活性与苜蓿品种对白粉病的抗性密切相关。

关键词: 苜蓿白粉病, 过氧化物酶, 苯丙氨酸解氨酶, 抗病性

CLC Number:

S812

XING Hui-qin, LI Min-quan, XU Bing-liang, LEI Yu-ming, MA Jian-cang. Relationships between Leaf POD and PAL and the Resistance of Alfalfa Cultivars Against Powdery Mildew[J]. , 2007, 15(4): 376-380.

邢会琴, 李敏权, 徐秉良, 雷玉明, 马建仓. 过氧化物酶和苯丙氨酸解氨酶与苜蓿白粉病抗性的关系[J]. , 2007, 15(4): 376-380.

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Relationships between Leaf POD and PAL and the Resistance of Alfalfa Cultivars Against Powdery Mildew

过氧化物酶和苯丙氨酸解氨酶与苜蓿白粉病抗性的关系

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