摘要
研究了24-表油菜素内酯(EBR)对低氧胁迫黄瓜幼苗根系多胺、ATPase活性及无机离子含量的影响。结果表明,低氧导致根系内多胺(PAs)含量显著提高、(精胺+亚精胺)/腐胺的比值下降,而K+、Ca2+、Mg2+、Zn2+含量及ATPase活性显著下降;与单纯的低氧处理相比,EBR可增加低氧黄瓜幼苗根系亚精胺(Spd)、精胺(Spm)含量及(精胺+亚精胺)/腐胺的比值,显著提高ATPase活性及Ca2+、Mg2+、Fe3+、Mn2+含量。可见,EBR可调节幼苗根系多胺变化,有效提高ATPase活性,促进无机离子的吸收,缓解了低氧的伤害。
A laboratory experiment was conducted to study the effects of 24-epibrassinolide （EBR） on the polyamines（PAs）, inorganic ion content, and ATPase activity in roots of cucum- ber seedlings under hypoxia stress. Hypoxia stress induced the significant increase of PAs, the decrease of （Spd＋Spm）/Put ratio, and the significant decrease of K＋, Ca2＋, Mg2＋, and Zn2＋ contents and of ATPase activity. EBR could increase the Spm and Spd contents and the （ Spd ＋ Spm）/Put ratio under hypoxia stress, and in addition, significantly increase the Ca2＋, Mg2＋, Fe3., and Mn2＋ contents and the ATPase activity. It was suggested that EBR could regulate the PAs content, increase the ATPase activity, enhance the inorganic ion content, and thereby, alle- viate the damage of hypoxia stress.
出处
《生态学杂志》
CAS
CSCD
北大核心
2013年第3期611-614,共4页
Chinese Journal of Ecology
基金
国家重点基础研究发展计划项目(2009CB119000)
国家自然科学基金项目(30871736)
江苏省农业三新工程项目(SXGC[2012]391)
(SX(2011)289)资助
作者简介
陆晓民，男，1969年生，博士，副教授，主要从事设施作物生理生态研究，发表论文40余篇。E—mail：luxi—aomin88@163．com
通讯作者E—mail：srguo@njau．edu．cn
