中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 磷胁迫对水曲柳幼苗叶绿素合成、光合作用和生物量分配格局的影响 应用生态学报 2004,15 (6) 935-940
Position: Home > Articles > Effect of phosphorus stress on chlorophyll biosynthesis,photosynthesis and biomass partitioning pattern of Fraxinus mandchurica seedlings Chinese Journal of Applied Ecology 2004,15 (6) 935-940

磷胁迫对水曲柳幼苗叶绿素合成、光合作用和生物量分配格局的影响

作  者：
吴楚;范志强;王政权
单  位：
东北林业大学森林资源与环境学院
关键词：
水曲柳;磷胁迫;叶绿素合成;光合作用;生物量分配
摘  要：
采用沙培试验对水曲柳幼苗磷胁迫与叶绿素合成、光合作用和生物量分配的关系进行了研究 .结果表明 ,在磷胁迫下 ,水曲柳幼苗叶片内 5 氨基乙酰丙酸 (ALA)合成速率和胆色素原 (PBG)合成酶活性下降 ,但叶片中叶绿素a、叶绿素b、总叶绿素以及类胡萝卜素含量没有显著变化 ;水曲柳幼苗叶片和根中N浓度下降 ,P在各个部位的浓度也相应减少 ,表明N和P在苗木生理过程中具有协同作用 .叶片中N浓度下降引起光系统Ⅱ (PSⅡ )最大光量子效率 (Fv/Fm)、PSⅡ的光化学效率 (ΦPSⅡ)、电子传递速率 (ETR)以及最大光合速率 (Amax)下降 .磷胁迫对叶绿素合成的影响与Amax下降无关 .在磷胁迫下 ,水曲柳幼苗总生物量下降 ,且生物量分配倾向于地下部分 ,而在P充足或过剩条件下 ,生物量主要分配于地上部分
译  名：
Effect of phosphorus stress on chlorophyll biosynthesis,photosynthesis and biomass partitioning pattern of Fraxinus mandchurica seedlings
作  者：
WU Chu 1,2 ,FAN Zhiqiang 1,WANG Zhengquan 1 ( 1School of Forest Resources and Environment,Northeast Forestry University,Harbin 150040,China; 2Faculty of Horticulture and Gardening,Yangtze University,Jingzhou 434125,China).
关键词：
Fraxinus mandchurica , Phosphorus stress, Chlorophyll biosynthesis, Photosynthesis, Biomass partitioning.
摘  要：
Phosphorus is essential to forest trees for their growth and development,because of its important role in many metabolic processes of trees.But,most part of phosphorus in soils of Northeastern China is immobile and unavailable,and thus,many forest trees often suffer from phosphorus stress which affects the biomass accumulation of forest trees.The aim of this study is to understand how the chlorophyll biosynthesis,photosynthesis and biomass partitioning of Fraxinus mandchurica seedlings response to phosphorus stress.Sand culture experiment showed that when the seedlings were under phosphorus stress,their 5 aminolevulinic acid (ALA) biosynthesis rate and porphobilinogen (PBG) synthase activity were reduced,but no significant changes in chlorophyll a and b,total chlorophyll and carotenoid contents were found.The nitrogen content in leaves and roots and the phosphorus content in all parts of seedlings were reduced under phosphorus stress,and the reduction of N content in leaves induced the decrease of maximum quantum efficiency of PSⅡ ( F v/ F m)efficiency of PSⅡ photochemistry (Φ PSⅡ ),electron transport rate (E TR ),and maximum photosynthesis rate( A max ).The effect of phosphorus stress on chlorophyll biosynthesis didn't affect photosynthesis.Under phosphorus stress,the total biomass decreased,but more biomass was partitioned into roots.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46