不同盐胁迫时间下秋茄幼苗叶片膜脂过氧化作用的研究

王文卿; 林鹏

不同盐胁迫时间下秋茄幼苗叶片膜脂过氧化作用的研究

王文卿,
林鹏

厦门大学生物学系, 厦门361005

基金项目: 国家自然科学基金(39670135)

计量
- 文章访问数: 900
- HTML全文浏览量: 23
- PDF下载量: 835
- 被引次数: 0
出版历程
- 收稿日期: 1998-07-24
- 修回日期: 1998-10-15

Study on the membrane lipid peroxidation of the leaves of Kandelia candel seedlings to long-term and short-term salinity

Department of Biology, Xiamen University, Xiamen 361005

摘要

摘要: 对长时间和短时间盐胁迫下红树植物秋茄(Kandelin candel)叶片膜脂过氧化作用、叶绿素含量、电解质渗透率、叶片肉质化程度等与盐胁迫强度之间的关系进行了对比研究.结果表明,短时间盐胁迫和长时间盐胁迫下秋茄叶片超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、叶片肉质化程度等随盐胁迫强度的提高而有不同的变化规律.在短时间盐胁迫下,随基质盐度的提高,SOD活性(fw)变化呈“U”型,在盐度15～20处叶片SOD活性最低,MDA含量变化不明显,电解质渗透率和叶片肉质化程度先升高而后下降,在盐度20处最高;在长时间盐胁迫下,SOD活性先随盐度的提高而提高,当盐度高于10时又随盐度的提高而下降,而MDA含量随盐胁迫程度的提高而下降,电解质渗透率和肉质化程度却上升,不同盐胁迫时间下红树植物秋茄具有不同的耐盐机制.膜脂过氧化不是盐胁迫下秋茄叶片膜损伤的主要原因.
- 秋茄 /
- 盐胁迫膜脂过氧化 /
- 耐盐机制
Abstract: The membrane lipid peroxidation of the leaves of mangrove Kandelia candel seedling to long- and short-term salinity is dealt with.There were different trends in the SOD activity, MDA concentration and succulence of K.candel leaf with increasing salinity between long-term salt-stress (45 d) and short-term salt-stress(1 d).At short-term salt-stress with increasing salinity, SOD activity appeared in U-shaped, minimized at salinity 15~20;MDA concentration did not change significantly, electrolyte leakage(%)increased, and leaf succulence increased at first, maximized at salinity 20, then declined.While at long-term salt-stress with increasing salinity, SOD activity increased at low salinity and decreased at higher salinity, MDA concentration declined, electrolyte leakage and leaf succulence increased.There were differences in salt-tolerant mechanism between long-term saltstressed group and short-term salt-stressed group.Membrane lipid peroxidation was not the main reason for the destroy of K.candel leaves under salt stress.
- Kandelia candel /
- salt-stress /
- membrane lipid peroxide

HTML全文

参考文献(23)

Munns R, Temaat A. Whole plant response to salinity. Australian Journal of Physiology,1986, 13: 143～160

Saxena D, Amin M, Kianna S. Modulation of protein profiles in Rhizobium sp under salt stress. Canadian Journal of Micro-biology, 1996, 42:617～620

Redkar R J, Lacy R D, Singh N K. Biosynthetic pathways of glycerol accumulation under salt stress in Aspergillus nidulans.Experimental Mycology, 1995, 19(4): 241～246

Das S, Bose A, Ghosh B. Effect of salt stress on polyamine metabolism in Brassica campestris, phytochemistry, 1995, 39(2): 283～285

Ball M C, Farquhar G D. Photosynthetic and stomatal responses of two mangrove species,Aegiceras corniculalum and Avi-cenaia marina to long term salinity and humidity conditions. Plant Physiology, 1984, 74: 1～6

Ball M C, Farquhar GD. Photoynthetic and stomstal responses of grey mangrove, Avicennia marina to transient salinity con-ditions. Plant Physiology, 1984, 74:7～1

赵可夫,盐分过多对植物的伤害作用和伤害机理.曲阜师院学报(植物抗盐专刊),1984.5～22

刘宛,胡文玉,谢浦绨等.NaCl胁迫及外源自由基体对离体小麦叶片O₂和膜脂过氧化的影响.植物生理通讯,1995, 31(1): 26～29

赵可夫,邹琦,李德全等,盐分和水分胁迫对盐生和非盐生植物细胞膜脂过氧化作用的效应.植物学报,1993,35(7):519～525

高辉远,李卫军,李永革等.Na₂SO₄胁迫对四种抗盐性不同牧草膜脂过氧化和活氧清除系统的影响,植物生态学报.1995,19(2): 192～196

Kalir A, Poljakoff-Mayber A. Changes in activity of malate dehydrogenase,catalase, peroxidase and superoxide dismutase in leaves of Halimione portulacoioides(L.) Allen exposed to high sodium chloride concentrations.Annals of Botany,1981,47:75～85

Rabinoeitch H D, Ftidovich I. Growth of Chlorella soroiniana in the presence of sulfite elevates cell content of superoxide dimutase and imparts resistance towards paraquat Plants,1985,164:524～528

Ting I P, Drake M. 沙漠植物的生理生态(日文).野濑昭博译.九州大学出版会,1993,30～31

刘祖祺,张石诚.植物抗性生物学.北京:中国农业出版社,1990.243～372

张志良.植物生理实验指导(第二版).北京:高等教育出版社,1990.1～3,88～91

王建华,刘鸿先,徐同.超氧化物歧化酶(SOD)在植物逆境和衰老生理中的应用.植物生理学通讯,1989,25(1)1～7

赵可夫,王昭唐.作物抗性生理.北京:农业出版社,1990,284～290

Longstveth D J, Nobel P S. Salinity effects on leaf anatomy,.Plant Physiology, 1979, 63:700～703

Redker R J, Lemke P A,Singh N K. Altered gene expression in Asperrgillus nidulans in response to salt stress.Mycologia,1996, 88(2): 256～263

Hincha D K. Rapid induction of frost hardness in spinach seedlings under salt stress. Planta, 1994, 194(2):274～278

Guerrier G. Fluses of Na⁺,K⁺ and Cl^-, and osmotic adjustment in Lycopersicon pimpinelilfoloum and L. Esculentum dur-ing short-and long-term exposures to NaCl. Physiologla Plantarum, 1996, 97:583～591

王邦锡,孙莉,黄久常.渗透胁迫引起的膜损伤与膜脂过氧化和某些自由基的关系.中国科学(B辑),1992,4:364～468

吕庆,郑荣梁,干旱及活性氧引起小麦膜脂过氧化与脱脂化.中国科学(C辑),1996,26(1):26～30

施引文献

资源附件(0)

访问统计