• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Malate plays a central role in plant nutrition
【24h】

Malate plays a central role in plant nutrition

机译：苹果酸在植物营养中起关键作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Malate occupies a central role in plant metabolism. Its importance in plant mineral nutrition is reflected by the role it plays in symbiotic nitrogen fixation, phosphorus acquisition, and aluminum tolerance. In nitrogen-fixing root nodules, malate is the primary substrate for bacteroid respiration, thus fueling nitrogenase. Malate also provides the carbon skeletons for assimilation of fixed nitrogen into amino acids. During phosphorus deficiency, malate is frequently secreted from roots to release unavailable forms of phosphorus. Malate is also involved with plant adaptation to aluminum toxicity. To define the genetic and biochemical regulation of malate formation in plant nutrition we have isolated and characterized genes involved in malate metabolism from nitrogen-fixing root nodules of alfalfa and those involved in organic acid excretion from phosphorus-deficient proteoid roots of white lupin. Moreover, we have overexpressed malate dehydrogenase in alfalfa in attempts to improve nutrient acquisition. This report is an overview of our efforts to understand and modify malate metabolism, particularly in the legumes alfalfa and white lupin.
机译：苹果酸在植物新陈代谢中起着核心作用。它在植物矿物质营养中的重要性体现在它在共生固氮，磷吸收和铝耐受性中的作用。在固氮根瘤中，苹果酸是细菌呼吸的主要底物，因此促进了固氮酶的生长。苹果酸还提供了碳骨架，用于将固定氮同化为氨基酸。在缺磷期间，苹果酸经常从根部分泌出来，释放出无法利用的磷。苹果酸还参与植物对铝毒性的适应。为了定义植物营养中苹果酸形成的遗传和生化调控，我们从苜蓿的固氮根瘤中分离了苹果酸代谢相关基因，并从白羽扇豆缺磷蛋白根中提取了有机酸。此外，我们在苜蓿中过表达苹果酸脱氢酶以改善营养获取。本报告概述了我们为理解和改善苹果酸代谢所做的努力，特别是在豆科植物苜蓿和白羽扇豆中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号