氧化石墨烯对草坪植物高羊茅生长及生理的影响  

Effects of Graphene Oxide on Growth and Physiological Characteristics of Festuca arundinacea

作　　者：毛建越 多立安 赵树兰 MAO Jianyue;DUO Li’an;ZHAO Shulan(College of Life Sciences,Tianjin Key Laboratory of Animal and Plant Resistance,Tianjin Normal University,Tianjin 300387,China)

机构地区：[1]天津师范大学生命科学学院,天津市动植物抗性重点实验室,天津300387

出　　处：《园艺学报》2020年第10期2040-2046,共7页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(31870484)。

摘　　要：为探究氧化石墨烯(GO)对草坪植物生长和生理的影响,以高羊茅为试验材料,采用盆栽方法在土壤中添加不同比例(1%、2%和3%)GO,研究了高羊茅幼苗生长及生理特性的变化。结果表明:GO处理显著降低了高羊茅叶绿素和类胡萝卜素含量,抑制了生物量的积累,并且光合色素含量和生物量均随GO添加比例的增加而减少。与对照相比,3%GO处理一茬草生物量、总叶绿素和类胡萝卜素含量分别降低了14.0%、25.8%和36.2%,二茬草分别降低了19.2%、25.6%和62.3%。GO对丙二醛(MDA)含量和过氧化物酶(POD)活性的影响呈现出随GO比例的增加而升高的趋势,而过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性则先升高后降低,最大值分别出现在2%和1%GO处理。因此,GO的添加诱导高羊茅产生氧化胁迫,抑制生长,高剂量抑制作用更显著。Effects of graphene oxide(GO)on the growth and physiological characteristics of turfgrass were studied by pot experiment.The Festuca arundinacea was planted in soil with three levels(1%,2%and 3%)of GO added.The results showed that the contents of chlorophylls and carotenoids in Festuca arundinacea all significantly decreased under GO treatments,and the accumulation of dry weight was suppressed.The biomass and the contents of photosynthetic pigments decreased with the increase of GO treatment level.Compared with the control,the biomass,content of total chlorophylls and carotenoids were decreased by 14.0%,25.8%and 36.2%,respectively in first harvest,and by 19.2%,25.6%and 62.3%,respectively in the second harvest under 3%GO treatment.Increases of malondialdehyde(MDA)content and peroxidase(POD)activity were observed with the increment of GO treatment,while activities of catalase(CAT)and superoxide dismutase(SOD)increased first and then decreased with the increase of GO level.The CAT and SOD activities reached the highest values in 2%and 1%GO treatment levels,respectively.Therefore,the addition of GO had induced the oxidative stress in F.arundinacea,inhibited plant growth,and the inhibition was more significant at the high treatment level.

关 键 词：高羊茅 氧化石墨烯 生理特性 氧化胁迫 

分 类 号：S688.4[农业科学—观赏园艺]