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ID:37208968
大小:4.85 MB
页数:12页
时间:2019-05-19
《ALA诱导的黄酮醇积累参与调节苹果叶片气孔开度》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、园艺学报,2016,43(5):817–828.ActaHorticulturaeSinicadoi:10.16420/j.issn.0513-353x.2015-0873;http://www.ahs.ac.cn8175-ALA诱导的黄酮醇积累参与调节苹果叶片气孔开度*刘龙博,安玉艳,熊丽君,汪良驹(南京农业大学园艺学院,南京210095)摘要:以苹果离体叶片为材料,发现外源5-ALA处理可以诱导下表皮保卫细胞内黄酮醇含量显著上升。在5-ALA预处理抑制外源ABA诱导气孔关闭的同时,叶片保卫细胞ROS含量下降,而用外源槲皮素及山奈酚等黄酮醇预处理,也抑制了ABA诱导的苹果叶片气孔关
2、闭,并且降低保卫细胞ROS含量。此外,槲皮素和山奈酚可以抑制外源H2O2诱导的苹果叶片气孔关闭。以上结果喻示,5-ALA诱导苹果叶片气孔开放与其上调保卫细胞中黄酮醇含量而后降低活性氧含量有关。关键词:苹果;ABA;5-ALA;黄酮醇;气孔开度;保卫细胞中图分类号:S661.1文献标志码:A文章编号:0513-353X(2016)05-0817-12FlavonolsInducedby5-aminolevulinicAcidareInvolvedinRegulationofStomatalOpeninginAppleLeaves*LIULong-bo,ANYu-yan,XIONGLi-
3、jun,andWANGLiang-ju(CollegeofHorticulture,NanjingAgriculturalUniversity,Nanjing210095,China)Abstract:Usingdiphenylboricacid2-aminoethylester(DPBA),aflavonolfluorescentdye,andalaserscanningconfocalmicroscope(LSCM),wefoundthatanincreaseofflavonolfluorescenceappearedintheguardcellsoftheabaxialepid
4、ermisofdetachedleavesofapple(MalusdomensticaKorkh.‘Fuji’),especiallyaroundthenucleus,after5-ALApretreatmentfor2–4h.5-ALApretreatmentalsoinhibitedABA-inducedstomatalclosure,whichwasinseparablyrelatedtothereductionofthereactionoxygenspecies(ROS)accumulation.Coincidently,pretreatmentofquercetinor
5、kaempferol,twokindsofnaturalflavonols,alsoinhibitedstomatalclosureinducedbyABA,andmeanwhiledecreasedROScontentintheguardcellsofappleleaves.Furthermore,theexogenousflavonolseliminatedtheeffectofH2O2thatinducedstomatalclosureinappleleaves.Togetherwiththeseabove,itcanbededucedthat5-ALA-inducedstom
6、atalopeningisassociatedwithitsup-regulationofflavonollevelsinguardcells,whichtheneliminatesROSlevels.Therefore,flavonolsareinvolvedinstomatalregulationinducedby5-ALAinappleleaves.Keywords:apple;ABA;5-ALA;flavonol;stomatalaperture;guardcell收稿日期:2016–01–18;修回日期:2016–05–19基金项目:国家自然科学基金项目(31401820)
7、;中央高校基本科研业务费专项基金项目(KJQN201538);江苏省自然科学基金项目(BK20140702);江苏省苏北科技发展计划项目(BN2012035)*通信作者Authorforcorrespondence(E-mail:wlj@njau.edu.cn)LiuLong-bo,AnYu-yan,XiongLi-jun,WangLiang-ju.Flavonolsinducedby5-aminolevulinicacidareinvolvedinreg
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