FAN Xiaoxu,DU Zexuan,CHAI Shuli,et al.Comparison on Chlorophyll Fluorescence Kinetic Response of Six Bryophytes to Different Light Intensity[J].Northern Horticulture,2018,42(20):84-90.[doi:10.11937/bfyy.20173602]
光强胁迫下六种苔藓植物的叶绿素荧光动力学响应差异
- Title:
- Comparison on Chlorophyll Fluorescence Kinetic Response of Six Bryophytes to Different Light Intensity
- 文献标志码:
- A
- 摘要:
- 为了解成都市区常见苔藓对不同光照强度的光合响应差异，该研究对狭叶小羽藓(Haplocladium angustifolium)、鳞叶藓(Taxiphyllum taxirameum)、长肋青藓(Brachythecium populeum)、卵叶青藓(Brachythecium rutabulum)、弯叶灰藓(Hypnum hamulosum)和地钱(Marchantia polymorpha L.)6种苔藓植物进行了光照强度胁迫后的光合色素含量和荧光动力学参数测定。结果表明：狭叶小羽藓和卵叶青藓叶片的初始荧光（Fo）在高光（300 μmol·m-2·s-1）时均明显下降到低光（10 μmol·m-2·s-1）水平值以下。与低光相比，6种苔藓的PSII原初光能转化效率(Fv/Fm)均随着光强的增大以不同幅度减小，其中显著减少的是鳞叶藓、长肋青藓、卵叶青藓和地钱；6种苔藓的光化学猝灭系数（qP）在中光（100 μmol·m-2·s-1）时均未发生显著性变化，高光时鳞叶藓、长肋青藓、卵叶青藓和地钱显著下降。此外，狭叶小羽藓的非光化学猝灭系数（NPQ）在3个光强下均无显著变化。综合分析得出狭叶小羽藓和弯叶灰藓更能适应高光照的胁迫，鳞叶藓、长肋青藓、卵叶青藓和地钱相对更适应低光照。
- Abstract:
- InordertounderstandtheresponsetodifferentlightintensitiesofcommonbryophyteinChengdu,thephotosyntheticpigmentcontentandfluorescenceparametersofHaplocladiumangustifolium,Taxiphyllumtaxirameum,Brachytheciumpopuleum,Brachytheciumrutabulum,HypnumhamulosumandMarchantiapolymorphaweremeasuredafterstressedbydifferentlightintensity.Theresultsshowedthattheinitialfluorescence(Fo)ofH.angustifoliumandB.rutabuluminhighlightstandard(300μmol·m-2·s-1)werelowerthanthatofinlowlightstandard(10μmol·m-2·s-1)significantly.Comparedwiththatofstressedbylowlight,theFv/Fmofsixbryophytesdecreasedwiththeincreaseoflightintensity,expeciallyT.taxirameum,B.populeum,B.rutabulumandM.polymorphaweredecreasedsignificantly.Thephotochemicalquenching(qP)ofsixbryophytesallhadnomarkedchangeundermiddlelight(100μmol·m-2·s-1),whilethatofT.taxirameum,B.populeum,B.rutabulumandM.polymorphadecreasedstronglyunderhighlight.Inaddition,thenonphotochemicalquenchingofH.angustifoliumhadnoclearchangeunderdifferentlightintensitystress.Basedonthecomprehensiveanalysis,H.angustifoliumandH.hamulosumcouldadapttohighlightstress,whileT.taxirameum,B.populeum,B.rutabulumandM.polymorphaweremoreadaptedtolowlight.Theresultscouldprovidescientificguidanceforbryophytespeciesallocationandlawnconservationinlandscapearchitecture.
相似文献/References:
[1]王 强.重金属对苔藓植物影响的研究进展[J].北方园艺,2014,38(10):169.
WANG Qiang.Advance in the Effects of Heavy Metals on Bryophytes[J].Northern Horticulture,2014,38(20):169.
[2]张二芳,高 平,赵建成.历山自然保护区苔藓植物的再调查[J].北方园艺,2014,38(09):87.
ZHANG Er-fang,GAO Ping,ZHAO Jian-cheng.Re-Survey on the Bryophyte of Lishan Nature Reserve[J].Northern Horticulture,2014,38(20):87.
[3]陈兵红,陈俏彪,李秋萍,等.苔藓植物功能分析及其园林产品开发[J].北方园艺,2013,37(08):90.
CHEN Bing-hong,CHEN Qiao-biao,LI Qiu-ping,et al.Functional Analysis of Bryophytes and Its Gardening Product Development[J].Northern Horticulture,2013,37(20):90.
[4]谢斐,杨再超,左经会,等.贵州山地森林公园地面生苔藓植物多样性[J].北方园艺,2015,39(09):71.[doi:10.11937/bfyy.201509021]
XIE Fei,YANG Zai-chao,ZUO Jing-hui,et al.Species Diversity of Ground Bryophytes in the Montane Forest of Guizhou Province[J].Northern Horticulture,2015,39(20):71.[doi:10.11937/bfyy.201509021]
[5]李德辉,刘忠英,马欣,等.遵义市凤凰山土壤砾石与水分含量对苔藓植物多样性的影响[J].北方园艺,2016,40(19):188.[doi:10.11937/bfyy.201619048]
LI Dehui,LIU Zhongying,MA Xin,et al.Effect of Bryophytes Diversity by Soil Gravel and Moisture Content in Fenghuangshan National Forest Park of Zunyi Town，Guizhou Province[J].Northern Horticulture,2016,40(20):188.[doi:10.11937/bfyy.201619048]
[6]于 淑 玲,杜 丽 敏.苔藓植物特性及其综合应用[J].北方园艺,2007,31(02):0.[doi:10.11937/bfyy.200702023]
[J].Northern Horticulture,2007,31(20):0.[doi:10.11937/bfyy.200702023]
备注/Memo
第一作者简介：樊晓旭（1992-），女，新疆乌鲁木齐人，硕士，研究方向为苔藓植物多样性。E-mail：1498883740@qq.com.责任作者：王丽（1969-），女，云南玉溪人，博士，教授，现主要从事资源植物学等研究工作。E-mail：yzxj@vip.163.com.基金项目：“十二五”国家科技支撑计划资助项目（2015BAC05B05）。收稿日期：2018-02-23