盐胁迫对金森女贞生理特征的影响
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摘要
研究了不同浓度NaCl盐胁迫环境下金森女贞叶片含水量、叶绿素含量、超氧化物歧化酶(SOD)活性、质膜相对电导率、丙二醛(MDA)以及可溶性糖含量的变化。结果表明:金森女贞叶片Chla、Chlb含量均随NaCl处理浓度的增大而增加,Fv/Fm无明显变化;植株叶片含水量在100 mmol/L NaCl处理时达到峰值;叶片中SOD活性呈现先减小后增大的变化趋势,其最大值出现在100 mmol/L NaCl处理时;处理组质膜相对电导率明显高于对照组,且在NaCl浓度为200 mmol/L时达到最高值;随着NaCl处理浓度的增加,MDA含量呈现先降低后增加的变化趋势。
The changes of water content,chlorophyll content,superoxide dismutase activity,plasma membrane relative conductivity,MDA and soluble sugar content in leaves of Ligustrum higginson were studied under NaCl salt stress.The results showed that the content of Chla and Chlb in leaves of Ligustrum higginson increased with the increase of NaCl concentration,but Fv/Fm had no significant change.The water content of plant leaves peaked at 100 mmol/L NaCl treatment.The SOD activity in the leaves decreased firstly and then increased,and the maximum value appeared at 100 mmol/L NaCl treatment.The relative conductivity of the plasma membrane of treatment groups were significantly higher than that of control group,and reached the maximum value at200 mmol/L NaCl treatment.With the increase of NaCl concentration,the MDA content firsdy decreased and then increased.
The changes of water content,chlorophyll content,superoxide dismutase activity,plasma membrane relative conductivity,MDA and soluble sugar content in leaves of Ligustrum higginson were studied under NaCl salt stress.The results showed that the content of Chla and Chlb in leaves of Ligustrum higginson increased with the increase of NaCl concentration,but Fv/Fm had no significant change.The water content of plant leaves peaked at 100 mmol/L NaCl treatment.The SOD activity in the leaves decreased firstly and then increased,and the maximum value appeared at 100 mmol/L NaCl treatment.The relative conductivity of the plasma membrane of treatment groups were significantly higher than that of control group,and reached the maximum value at200 mmol/L NaCl treatment.With the increase of NaCl concentration,the MDA content firsdy decreased and then increased.
引文
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[2]廖岩,彭友贵,陈桂珠.植物耐盐性机理研究进展[J].生态学报,2007,27(5):126-129.
[3]刘会超,孙振元,彭镇华.NaCl胁迫对五叶地锦生长及某些生理特性的影响[J].林业科学,2005,40(6):63-67.
[4]刘会超.耐盐和盐生园林植物引种,筛选,利用及其耐盐机理的研究[D].北京:中国林业科学研究院,2005.
[5]姚世响,陈莎莎,徐栋生,等.不同盐胁迫对新疆耐盐植物藜叶片钾,钠元素含量及相关基因表达的影响[J].光谱学与光谱分析,2010,30(8):2281-2284.
[6]Song J,Chen M,Feng G,et al.Effect of salinity on growth,ion accumulation and the roles of ions in osmotic adjustment of two populations of Suaedasalsa[J].Plant and soil,2009,314(l/2):133-141.
[7]李合生.现代植物生理学[M].2版.广州:高等教育出版社,2002:65-68.
[8]黄卓烈,李明启.氯化钠对高等植物光呼吸作用的影响[J].植物生理学通讯,1993,29(3):214-218.
[9]马海燕,林松明,徐迎春,等.氯化钠胁迫对2个中山杉无性系生长及离子吸收运输的影响[J].浙江林学院学报,2008,25(3):319-323.
[10]王林权,邵明安.高等植物对钠离子的吸收,运输和累积[J].干旱地区农业研究,2005,23(5):244-249.
[11]Wan C,Shao G,Chen Y,et al.Relationship between salt tolerance and chemical quality of soybean under salt stress[J].Chinese Journal of Oil Crop Sciences,2002,24:67-72.
[12]Asada K.The water cycle in chloroplasts:Scavenging of active oxygens and dissipation of excess photons[J].Annu Rev Plant Physiol Plant Mol Biol,1999,50:601-639.
[13]Ullah H,Chen J G,Wang S,et al.Role of a het-erotrimeric G protein in regulation of Arabidopsis seed germi-nation[J].Plant Physiology,2002,129(2):897-907.
[14]Huang C,He W,Guo J,et al.Increased sensitivity to salt stress in anascorbate-deficient Arabidopsis mutant[J].J Exp Bot,2005,56;3041-3049.
[15]王秀丽,张获,刘红梅,等.海滨木槿耐盐性的初步研究[J].上海交通大学学报:农业科学版,2010,28(3):248-254.
[16]王瑞刚,陈少良,刘力源,等.盐胁迫下3种杨树的抗氧化能力与耐盐性研究[J].北京林业大学学报,2005,27(3):46-52.
[17]李彦,张英鹏,孙明,等.盐分胁迫对植物的影响及植物耐盐机理研究进展[J].中国农学通报,2008,24(1):258-265.
[18]Doering P H,Chamberlain R H,Haunert D E.Using submergedaquatic vegetation to establish minimum and maximum freshwaterinflows to the Caloosahatchee estuary,Florida[J].Estuaries,2002,25(6):1343-1354.
[19]张楚涵,慈华聪.不同钠盐和钙盐对狼尾草生长的影响[J].安徽农业科学,2014,42(20):6538-6541,6577.
[20]Adair S E,Moore J L.Distribution and status of submerged vegetation inestuaries of the upper Texas coast[J].Wetlands,1994,14:110-116.
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