臭氧浓度升高对竹类植物叶片光合色素的影响  

Effect of Elevated Ozone Concentration on the Leaf Photosynthetic Pigments of Different Bamboos

作　　者：颜送宝 王丽云[1] 仇水龙 潘文婷[1] YAN Song-bao;WANG Li-yun;QIU Shui-long(Subtropical Experimental Center,CAF,Fenyi,Jiangxi 33660)

机构地区：[1]中国林业科学研究院亚热带林业实验中心,江西分宜336600

出　　处：《安徽农业科学》2018年第26期110-112,129,共4页Journal of Anhui Agricultural Sciences

基　　金：中央级公益性科研院所基本科研业务费专项(CAFYBB2016QA015)

摘　　要：[目的]研究臭氧浓度升高对竹类植物光合色素的影响。[方法]以亚热带主要竹种:毛竹(Phyllostachys edulis)、四季竹(Oligostachyum lubricum)、美丽箬竹(Indocalamus decorus)、黄条金刚竹(Pleioblastus kongosanensis)和白缟椎谷!竹(Sasa glabra)为研究对象,运用开顶式气室(OTCs)模拟4个不同O_3浓度升高的情景(背景大气O_3浓度、50、100和150 n L/L),测定叶片光合色素组分并计算光合色素比值。[结果]随着O_3浓度的升高,竹类植物光合色素和叶绿素/类胡萝卜素呈下降趋势,而叶绿素a/b呈升高趋势。与CK相比,不同竹类植物光合色素对O_3浓度升高的响应存在差异,低O_3浓度为50 n L/L时,仅毛竹叶片光合色素呈显著下降趋势,而其余4种竹类植物则无显著变化;高O_3浓度为100 n L/L时,除美丽箬竹光合色素无显著变化外,其余4种竹类植物均显著降低;高O_3浓度150 n L/L均显著影响5种竹类植物光合色素。[结论]高O_3浓度(≥100 n L/L)显著影响竹类植物的光合色素组分及其比值,进而影响植物的生长;毛竹叶片光合色素对大气O_3浓度升高较为敏感,在一定程度上可作为臭氧污染的指示植物;而美丽箬竹表现出较强的抗逆性,可作为抗逆植物。[Objective]To demonstrate the effects of elevated ozone （O 3） on the photosynthetic pigments of different bamboos.[Method] We choosed the Phyllostachys edulis, Oligostachyum lubricum, Indocalamus decorus, Pleioblastus kongosanensis and Sasa glabra as experiment material, and the open-top chambers （OTCs） test method was employed to simulate the different atmospheric elevated O 3 concentrations （CK, 50,100 and 150 nL/L） to explain above question. [Result] With the increasing of O 3 concentrations, the leaf chlorophyll and carotenoid contents of five bamboo species were decreased,while the Chl a/b were increased.Compared with CK, low O 3 concentrations （50 nL/L） significantly decreased the photosynthetic pigments in Phyllostachys edulis rather than in other four bamboo species, but higher O 3 concentrations （100 nL/L） did not affect the photosynthetic pigments in Indocalamus decorus but significantly decreased the other bamboo species. Moreover, photosynthetic pigments in all bamboo species were decreased when O 3 concentrayion reached 150 nL/L. [Conclusion]Higher ozone concentrations （≥100 nL/L） significantly influenced photosynthetic pigments of bamboo species, and then affected the growth of bamboo species; Phyllostachys edulis was regard as the indicative plant of ozone pollution in view of its sensitive to elevated O 3, while Indocalamus decorus had a stronger capability of O 3 stress tolerance, which could be popularlarized in higher O 3 pollution area.

关 键 词：臭氧浓度升高 竹类植物 光合色素 差异性 

分 类 号：S795[农业科学—林木遗传育种]