《生命科学》 2013, 25(6): 588-594

植物抗铝分子机制研究进展

李交昆^1*，唐璐璐²

(1 中南大学资源加工与生物工程学院，长沙 410083；2 中南大学生物科学与技术学院，长沙 410013)

摘　要：摘　要：铝毒是酸性土壤中抑制植物生长和减少作物产量的主要因素。外部排斥(external exclusion) 和内部耐受(internal detoxification) 机制是植物抗铝毒性最重要的两种生理机制。近年来，在植物中鉴定出一系列抗铝基因，如有机酸转运蛋白基因(ALMT 和MATE)、ABC 转运蛋白基因、自然抗性相关巨噬细胞蛋白基因(Nramp) 和镁离子转运蛋白基因等，同时对抗铝基因的功能及转录调控研究也取得了很大进展。综述了近来植物抗铝分子机制的最新研究成果，并对未来的研究前景进行了展望。
关键词：铝毒；铝抗性基因；抗铝机制；有机酸；调控因子

Research advances on the molecular mechanisms of aluminum tolerance in plants

LI Jiao-Kun^1*， TANG Lu-Lu²

(1 School of Minerals Processing and Bioengineering， Central South University， Changsha 410083， China; 2 School of Biological Science and Technology， Central South University， Changsha 410013， China)

Abstract: Abstract: Aluminum toxicity is the major factor for inhibiting plant growth and crop yield in acid soils. External exclusion and internal detoxification have been considered as the two most important mechanisms to deal with Al stress. Recently， a series of Al tolerance genes have been identified in various plants， such as genes related to organic acid transporters (ALMT and MATE)， ABC transporters and Nramp gene family， magnesium transporters and research about the function and transcriptional regulation of these genes also has obtained great progress. In this paper， the progresses on the molecular aspects of Al tolerance in plants are summarized and the prospects in this field are discussed.
Key words: aluminum toxicity; Al-tolerance genes; tolerance mechanism; organic acids; regulatory factors