大气CO2浓度升高对植物根系形态的影响及其调控机理  

Effect of elevated CO_2 on morphology change of plant roots and its regulatory mechanism

作　　者：牛耀芳[1] 宗晓波[1] 都韶婷[2] 黄利东[1] 章永松[1] 

机构地区：[1]浙江大学环境与资源学院,教育部环境修复与生念健康重点实验室,浙江省亚热带土壤与植物营养重点实验室,浙江杭州310029 [2]浙江工商大学环境科学与工程学院,浙江杭州310035

出　　处：《植物营养与肥料学报》2011年第1期240-246,共7页Journal of Plant Nutrition and Fertilizers

基　　金：国家自然科学基金资助项目(30871590);浙江省重大科技专项(2008C12061-1);科技部农业科技成果转化资金项目(2010GB23600669);教育部博士点基金项目(200803350117)资助

摘　　要：大气CO2浓度升高会对植物根系形态产生明显的影响,尤其是根的长度、分枝、产量、周转以及根与枝的分配模式等方面,从而有助于植物从土壤中摄取更多的养分及水分,更好地适应大气CO2浓度升高后的环境。目前,该领域研究,如在CO2浓度升高条件下,根系形态变化的内部调控机制,以及由其引起的物质分配和能量流动等仍存在较大争议。本文综述了近年来关于CO2浓度升高及与外界环境因素的共同作用对根系形态影响的研究,以期为阐明CO2浓度升高对植物根系生长发育带来的影响及其机制提供理论指导。The root morphology of plant could be significantly affected by the elevated atmospheric CO2,especially the roots length,diameter,biomass,turnover and spatial distribution,all of which would facilitate the plants to absorb more nutrients and water from the soil so as to adapt the elevated CO2 environment.However,there are still some shortages in this research area.For example,both the mechanisms regulating the elevated CO2-induced morphology change of roots and the dynamic changes of matter cycling and energy flow are hot disputed.This present paper summarizes the achievements of published researches in recent years about the effect of elevated CO2 and its interaction with environment elements on morphology change of root,so as to provide the theory for revealing the mechanism of elevated CO2-induced morphology change of roots.

关 键 词：CO2浓度升高 根系形态 环境要素 碳水化合物 激素 

分 类 号：S184[农业科学—农业基础科学]