
植物营养与肥料学报2011,17(1):240-246 Plant Nutrition and Fertilizer Science
大气CO2浓度升高对植物根系形态的影响
及其调控机理
牛耀芳",宗晓波,都韶婷2,黄利东',章永松"*
(1浙江大学环境与资源学院,教育部环境修复与生态健康重点实验室,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)
模式等方面,从面有助于梳物从土壤中摄取更多的养分及水分,更好地适应大气CO,浓度升高后的环境。目前,该领大争议。本文综述了近年来关于CO,浓度升高及与外界环境闪索的共同作用对根系形态影响的研究,以期为阐明
CO,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。关键词:CO,浓度升高;根系形态;环境要素;碳水化合物;激素
中图分类号:S161;Q945.11
文献标识码:A
文章编号:1008-505X(2011)01-0240-07
EffectofelevatedCO,onmorphologychangeofplantroots
anditsregulatorymechanism
NIU Yao-fang", ZONC Xiao-bo', DU Shao-ting’, HUANG Li-dong”, ZHANG Yong-song"
(I College of Natural Resource and Environment Science, Zhejiang Universily/Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health/Zhejiang Proincial Key Laboratory of Subtropic Soil and Plant Nutrition, Hangzhou 310029,
China; 2 School of Eruironmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310035, China)
Abstract: The root morphology of plant could be significantly affected by the elevated atmospheric COz, especially the roots length, diameter, biomass, tumover and spatial distribution, all of which would facilitate the plants to ab sorb more nutrients and water from the soil so as to adapt the elevated CO, environment. However, there are still some shortages in this research area. For example, both the mechanisms regulating the elevated CO, induced mor-phology 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 CO, and its interaction with environment elements on morphology change of root, so as to provide the theory for revealing the mechanism of elevated CO,induced morphology change of roots
Key words: elevated CO,; root morphology; environment elements; carbohydrate; hormone
近年来,由于人类活动的影响,大气中CO,浓度已从工业革命前约280μL/L升高至目前的367 μL/L左右,且以每年1~2μL/L的速度递增);预计到2100年,大气C0,浓度将升至490到1260
收稿日期:2010-0113
接受日期:2010-09-30
μL/L[2]。CO,作为植物进行光合作用的重要原料,其浓度的升高势必会对植物的生长发育及生物产量带来深刻的影响。在近十儿年中,国内外研究者就大气CO,浓度升高对植物生长影响开展广泛的研究(3-6)。
基金项目:国家白然科学基金资助项日(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。
作者简介:牛银芳(1984一),女,山西析州人,硕士研究生,主要从事植物营养生理与分子生物学方面的研充。
通讯作者 Tel; 0571 86971147, E-mail; yszhang@ xju. edo. cn
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