摘要
有机酸不仅是碳代谢的中间体,而且在一些植物应对养分缺乏、金属胁迫以及根-土界面中操纵植物-微生物间的交互作用方面都发挥着关键作用.从植物营养学角度,对最近关于植物体内有机酸的形成与生理,及其与氮素代谢,磷和铁的吸收,铝的耐受以及土壤生态之间的关系等方面进行了总结,并对有机酸的跨膜运输、转基因模型中有机酸调控的生物技术操作的最新发现进行了讨论,以期为理解有机酸代谢的植物营养学基本原理提供基础.最后,还提出了通过生物技术,培育作物新品种,以更好地适应环境与金属胁迫.
Organic acids not only act as the intermediates in carbon metabolism, but also exert key roles in the plant adaptation to nutrient deficiency and metal stress and in the plant-microbe interactions at root-soil interface. From the viewpoint of plant nutrition, this paper reviewed the research progress on the formation and physiology of organic acids in plant, and their functions in nitrogen metabolism, phosphorus and iron uptake, aluminum tolerance, and soil ecology. New findings in the membrane transport of organic acids and the biotechnological manipulation of organic acids in transgenic model were also discussed. This novel perspectives of organic acid metabolism and its potential manipulation might present a possibility to understand the fundamental aspects of plant physiology, and lead to the new strategies to obtain crop varieties better adapted to environmental and metal stress.
出处
《应用生态学报》
CAS
CSCD
北大核心
2006年第11期2210-2216,共7页
Chinese Journal of Applied Ecology
基金
安徽省自然科学基金项目(050410105)
安徽省高校科研基金资助项目(2005KJ153).
关键词
有机酸代谢
养分吸收
铝的耐受
膜运输
转基因植物
Organic acid metabolism, Nutrient uptake, Aluminum tolerance, Membrane transport, Transgenic plant.
