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当前位置: 首页 > 文章 > FACE对武香粳14各生育期功能叶片及根系可溶蛋白含量的影响 农业环境科学学报 2006,25 (05) 1117-1121
Position: Home > Articles > Effect of Free-air CO_2 Enrichment(FACE) on Concentrations of Soluble Protein in Functional Leaves and Roots of Japonica Rice(Oryza sativa L.) Cultivar Wuxianjing 14 Journal of Agro-Environment Science 2006,25 (05) 1117-1121

FACE对武香粳14各生育期功能叶片及根系可溶蛋白含量的影响

作  者：
胡健;王余龙;杨连新;周娟;朱建国
单  位：
扬州大学江苏省作物遗传生理重点实验室;中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室
关键词：
FACE;可溶蛋白;水稻
摘  要：
开放式大气CO2浓度增加(Free-air CO2 Enrichment,FACE)的处理普遍降低了作物含氮率,研究作物体内各种氮形态尤其是可溶蛋白的含量特征,对于解析FACE条件下氮代谢机制具有重要意义。在大田栽培条件下,研究了开放式大气CO2浓度增加200μmol.mol-1的处理对粳稻品种武香粳14各生育期功能叶片及根系可溶蛋白含量的影响。结果表明:(1)FACE处理显著增加了高、中氮水平下抽穗期顶叶的可溶蛋白含量,增幅分别为4%和7%,相反,不同氮水平下成熟期顶叶可溶蛋白含量显著低于对照,而拔节期及孕穗期顶叶可溶蛋白含量与对照无显著差异;(2)FACE处理显著提高了高、中氮水平下抽穗期倒二叶可溶蛋白的含量,增幅分别为16%和14%,但明显降低了不同氮水平下拔节期、孕穗期和成熟期倒二叶可溶蛋白的含量;(3)FACE处理显著提高了拔节期、孕穗期和抽穗期根系可溶蛋白的含量,增幅分别达18%、19%和12%,而成熟期根系可溶蛋白含量与对照无显著差异;(4)CO2和N处理对水稻拔节期、抽穗期和成熟期倒二叶以及抽穗期剑叶可溶性蛋白含量的互作效应均达显著或极显著水平。在此基础上,对FACE条件下功能叶片及根可溶蛋白含量变化的可能机制进行了讨论。
译  名：
Effect of Free-air CO_2 Enrichment(FACE) on Concentrations of Soluble Protein in Functional Leaves and Roots of Japonica Rice(Oryza sativa L.) Cultivar Wuxianjing 14
作  者：
HU Jian1,2,WANG Yu-long1,YANG Lian-xin1,ZHOU Juan1,ZHU Jian-guo3(1.Key Laboratory of Crop Genetics & Physiology of Jiangsu Province,Yangzhou University,Yangzhou 225009,China;2.College of Environmental Science & Engineering,Yangzhou University 225009,China;3.State Key Laboratory of Soil and Sustaiable Agriculture,Institute of Soil Science,Chinese Academy of Science,Nanjing 210008,China)
关键词：
free-air CO2 enrichment(FACE);soluble protein;rice
摘  要：
Generally,Free-air CO2 Enrichment(FACE) leads to decreases in N concentrations of crops.Knowledge of the characteristics of various nitrogen(N) form especially soluble protein content of crops is very important to understand the mechanisms for N metabolism under FACE condition.A FACE experiment was conducted in 2002 to investigate the effect of elevated on soluble protein content in functional leaves and roots,using the japonica cultivar Wuxiangjing 14.The target in the FACE plots was 200 μmol·mol-1 above that in the ambient air.Three levels of N were supplied: low(LN,15 kg·hm-2),medium(MN,25 kg·hm-2) and high N(HN,35 kg·hm-2).The results showed that:(1) Under MN and HN treatments,FACE significantly increased soluble protein concentrations in top leaves of rice at heading stage,averaging 4% and 7% for MN-and HN-crops,respectively.On the contrary,at ripening stage,FACE greatly reduced soluble protein concentrations in top leaves across three N levels,while no significant differences between two CO2 treatments were detected at jointing and booting stage.(2) Also,FACE significantly increased soluble protein contents in the 2nd leaves at heading stage,averaging 16% and 14% for MN-and HN-crops,respectively,while it reduced soluble protein contents in the 2nd leaves at jointing,booting and ripening stages across all N levels.(3) FACE significantly increased soluble protein contents in rice roots by 18%,19% and 12% at jointing,booting and heading stage,respectively,while no significant effect of FACE was found at ripening stage.(4) For soluble protein contents in the 2nd leaves at jointing,heading and ripening stage,as well as soluble protein contents in top leaves at heading stage,significant interactions between CO2 and N were observed(P<0.01 or P<0.05).Possible mechanism of seasonal changes of soluble protein contents in functional leaves and roots was also discussed.

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