首页 | 本刊简介 | 编委会 | 投稿征稿 | 期刊订阅 | 下载中心 | English
 
   
  论文快速检索

请输入关键词

 

 

   
  信息公告
海外撷英栏目开通,欢迎投稿

热带亚热带植物学报网络开通

访问总次数
14385818
今日访问
670
当前在线
0人
 
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1734次   下载 1783 本文二维码信息
码上扫一扫!
分享到: 微信 更多
气候因子对三种豆科树种固氮的影响
黄维南, 黄志宏, 林清洪, 章宁, 蔡克强, 邹小鲁
作者单位
黄维南, 黄志宏, 林清洪, 章宁, 蔡克强, 邹小鲁  
摘要:  研究了气候因子对台湾相思(Acaciaconfusa)、大叶相思(A.auriculaeformis)和南岭黄檀(Dalbergiabalansae)根瘤固氮酶和吸氢酶活性的影响。3种树木根瘤均具有吸氢酶活性,外源H2可提高固氮酶活性,表明吸氢酶有助于固氮效率的提高。3树种根瘤的固氮活性有明显季节变化,夏秋活性较高,早春及冬季活性较低。离体根瘤固氮和吸H2活性表达的最适温度为25-30℃。光照强度及土壤湿度均显著影响根瘤固氮和吸H2活性。
关键词:  气候因子  台湾相思  大叶相思  南岭黄檀  根瘤  固氮酶  吸氢酶
DOI:10.3969/j.issn.1005-3395.2004.5.012
分类号:
基金项目:
Effect of Climatic Factors on Nitrogen Fixation in Three Leguminous Trees
HUANG Wei-nan, HUANG Zhi-hong, LIN Qing-hong, ZHANG Ning, CAI Ke-qiang, ZOU Xiao-lu
Abstract:  Effect of climatic factors on nitrogenase and hydrogenase activities in nodules of Acacia confusa, A. auriculaeformis and Dalbergia balansae were investigated. Hydrogen uptake activity was found in the nodules of all the three leguminous trees. In the presence of exogenous hydrogen, nitrogenase activity in nodules increased markedly, indicating that hydrogenase played an important role in increasing the efficiency of nitrogen-fixation in symbiotic system. Seasonal changes were obvious in nodulation and nitrogen fixation of leguminous species grown in Xiamen area. Results showed that more nodules produced and higher C2H2-reducing activity were observed in summer and autumn than in early spring and winter.The optimun temperature for both nitrogenase and hydrogenase activities in nodules was 25-30℃.Minor soil water deficit did not affect the C2H2-reducing activities,but serious soil drought markedly reduced the activities of nitrogen-fixation and hydrogen uptake.Shading reduced both nitrogenase and hydrogenase activities in nodules.
Key words:  Climatic factors  Acacia confusa  Acacia auriculaeformis  Dalbergia balansae  Nodules  Nitrogenase  Hydrogenase

Copyright 2007 版权所有 中国科学院华南植物园《热带亚热带植物学报》编辑部
地址: 广州市天河区兴科路723号 中国科学院华南植物园 《热带亚热带植物学报》编辑部 邮编:510650 电话: 86 (0)20-3725 2514  传真:86 (0)20-3725 2642 E-mail: jtsb@scib.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09084417号-2