首页 | 本学科首页   官方微博 | 高级检索  
     

不同类型冷浸田Fe2+对水稻生理酶活性的影响
引用本文:陈正刚 徐昌旭 朱青 崔宏浩 卢松 李剑 张德平 古雁兵. 不同类型冷浸田Fe2+对水稻生理酶活性的影响[J]. 中国农学通报, 2014, 30(12): 63-70
作者姓名:陈正刚 徐昌旭 朱青 崔宏浩 卢松 李剑 张德平 古雁兵
作者单位:1. 贵州省土壤肥料研究所2. 江西省农业科学院土壤肥料与资源环境研究所3. 贵州大学4. 贵州省平坝县马场镇农推站
基金项目:公益性行业(农业)科研专项;贵州省农业攻关项目;贵州省农业工程中心项目;国际植物营养研究所项目
摘    要:铁毒致病的生理机理是植物体内积累过量的铁以及铁化合物诱发多种活性自由基,进攻膜脂,导致脂质的过氧化和膜的损伤。在过量Fe^2+胁迫下,植株的超氧化物歧化酶(SOD)、过氧化物酶活性(POD)及丙二醛(MDA)含量的变化与抗铁毒密切相关。为了研究水稻对Fe^2+毒害的响应机制,通过田间试验,对不同类型的冷浸田开展不同浓度Fe^2+对水稻生理酶活性、生长发育及产量的影响。结果表明:不同类型冷浸田加入Fe^2+后。水稻叶片和根系的POD、SOD活性MDA含量随Fe^2+浓度的增加而提高,冷浸田(冷水田、烂泥田)的环境因子如低温提高了水稻的POD活性及MDA含量,降低了水稻的SOD活性,冷浸田(冷水田、烂泥田)水稻叶片和根系受Fe^2+伤害的程度高于黄泥田;Fe^2+对水稻生理活性的影响主要表现在分蘖期和抽穗期,尤其是水稻分蘖期的叶片和根系更容易受到Fe^2+的伤害;适宜的Fe^2+浓度有利于提高水稻产量。

关 键 词:冷浸田  Fe^2+  水稻  POD  SOD  MDA
收稿时间:2013-08-16
修稿时间:2013-09-17

Effects of Different Types of Cold Water Paddy Field Fe2+ on Physiological Activity of Rice
Chen Zhenggang,Xu Changxu,Zhu Qing,Cui Honghao,Lu Song,Li Jian,Zhang Deping,Gu Yanbing. Effects of Different Types of Cold Water Paddy Field Fe2+ on Physiological Activity of Rice[J]. Chinese Agricultural Science Bulletin, 2014, 30(12): 63-70
Authors:Chen Zhenggang  Xu Changxu  Zhu Qing  Cui Honghao  Lu Song  Li Jian  Zhang Deping  Gu Yanbing
Affiliation:1GuiZhou Institute for Soil and Fertilizer/Guizhou Institute for Agricultural Resources and Environment/ Field Monitoring Experimental Station for Cultivated Land Preservation and Agro-environment in Guizhou, Ministry of Agriculture of China, Guiyang 550006; 2Soil and Fertilize Institute, Jiangxi Academy Agricultural Science, Nanchang 330200; 3Guizhou University, Guiyang 550025; 4Agricultural Technology Extension Station Town of Machang Pingba County, Pingba Guizhou 561100)
Abstract:Physiological and pathogenic mechanism of iron toxicity in plants is the excessive accumulation of iron and iron compounds that induce a variety of active free radicals which attack membrane lipids, leading to lipid peroxidation and membrane damage. In excess under Fe2+ stress, the superoxide dismutase (SOD), peroxidase (POD) activity and malondialdehyde (MDA) of plants content increased with the anti iron toxicity are closely related. In order to study the response mechanism of rice by ferrous iron toxicity, a field experiment on the different types of cold water paddy field carry different concentrations Fe2+ on rice physiological activity, growth and yield. The results showed that: different types of cold water paddy field added Fe2+, the POD, SOD activity and the MDA content of the rice leaves and roots increased with the increase of Fe2+ concentration, the cold water paddy field (cold-water fields, muddy fields) environmental factors such as low temperature increased activity of POD and MDA content, decreased the activity of SOD in rice, the leaves and roots of rice in the cold water paddy field (cold-water fields, muddy fields) were damaged degree higher than the yellow clayey soil by ferrous; effect of Fe2+ on rice physiological activity is mainly manifested in the tillering stage and heading stage, especially the rice leaves and roots in the tillering stage are damaged more susceptible by ferrous; suitable Fe2+ concentration is conducive to improve rice yields.
Keywords:MDA
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《中国农学通报》浏览原始摘要信息
点击此处可从《中国农学通报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号