生态学杂志2018，Vol.37Issue(3)：869-876,8.DOI:10.13292/j.1000-4890.201803.013
不同光质对木荷、杉木幼苗叶片叶绿素荧光参数和抗氧化酶活性的影响
Effects of light quality on leaf chlorophyll fluorescence parameters and antioxidant enzyme activities of Schima superba and Cunninghamia lanceolata seedlings
摘要
Abstract
This study explored the effects of different light qualities (red,blue,and white) on chlorophyll fluorescence parameters and antioxidant enzyme activities in leaves of Schima superba and Cunninghamia lanceolata seedlings.The results showed that original fluorescence (Fo),maximal fluorescence (Fm),variable fluorescence (Fv) and steady state fluorescence (Ft) of S.superba seedling leaves were the highest under the white light.The photochemical efficiency (Fv/Fm),potential activity (Fv/Fo) and antenna transfer efficiency (Fv'/Fm') of PSII reaction center under different treatments followed trend:white light ＞ blue light ＞ red light.Compared to the white light,the blue light significantly increased the activity of superoxide dismutase (SOD).The red and blue light decreased the activity of catalase (CAT) but increased the activities of peroxidase (POD) and the content of malonaldehyde (MDA).Fo and Ft of C.lanceolata seedlings were the highest under the red light.Fm and Fv were the highest under the white light.Fv/Fm,Fv/Fo and Fv'/Fm'ratios were the highest under the white light,followed by the blue and red light treatments.Light quality had no significant effect on SOD activity,CAT activity and MDA content of C.lanceolata seedling leaves,while it had significant effects on POD activity,with a highest value under the white light.In short,light quality would regulate the seedling growth of both tree species examined here.The potential vitality of S.superba and C.lanceolata seedlings decreased under red and blue light treatments due to light stress and unbalanced antioxidant enzyme system.Consequently,red and blue light would be unfavorable for seedling growth.关键词
光质/幼苗/叶片/叶绿素荧光/酶活性Key words
light quality/seedling/leaf/chlorophyll fluorescence parameter/enzyme activity引用本文复制引用
刘青青,马祥庆,黄智军,李艳娟,庄正,朱晨曦,刘博..不同光质对木荷、杉木幼苗叶片叶绿素荧光参数和抗氧化酶活性的影响[J].生态学杂志,2018,37(3):869-876,8.基金项目
国家自然科学基金项目(31570448和31670714)和福建省高校新世纪优秀人才计划项目(K8015053A)资助. （31570448和31670714）
