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dc.contributor.authorZhao, ZQ
dc.contributor.authorZheng, HL
dc.contributor.author郑海雷
dc.contributor.authorZhu, YG
dc.date.accessioned2011-10-21T00:46:38Z
dc.date.available2011-10-21T00:46:38Z
dc.date.issued2004
dc.identifier.citationJ Environ Sci (China). 2004;16(5):742-5.zh_CN
dc.identifier.issn1001-0742
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10969
dc.description.abstractThe salt-secreting mangrove, Avicennia marina, and non-salt-secreting mangrove, Kandefia candel were cultivated in sand with various salinities (0parts per thousand, 10parts per thousand, 20parts per thousand, 30parts per thousand, 40parts per thousand) for 60 d. Plasma membrane vesicles of high-purity in leaves and roots of A. marina add K. candel seedlings were obtained by two-phase partitioning. The function of the plasma membranes, the activity of ATPase, membrane potential and transmembrane proton gradient, at various salinities were investigated. The results showed that within a certain range of salinity( A. marina and roots of K. candel: 0-30parts per thousand; leaves of K. candel: 0-20parts per thousand), the activity of ATPase increased with increasing salinity, while high salinity (above 30parts per thousand or 20parts per thousand) inhibited ATPase activity. In comparison with A. marina, K. candel appeared to be more sensitive to salinity. The dynamics of membrane potential and transmembrane proton gradient in leaves and roots of A. marina and K. candel seedlings were similar to that of ATPase. When treated directly by NaCl all the indexes were inhibited markedly: there was a little increase within 0-10parts per thousand( K. candel) or 0-20parts per thousand(A. marina) followed by sharp declining. It indicated that the structure and function of plasma membrane was damaged severely.zh_CN
dc.language.isoenzh_CN
dc.publisherSCIENCE CHINA PRESSzh_CN
dc.subjectsalinityzh_CN
dc.subjectA. marinazh_CN
dc.subjectK. candelzh_CN
dc.subjectplasma membranezh_CN
dc.subjectH-ATPasezh_CN
dc.subjectCa-ATPasezh_CN
dc.subjectmembrane potentialzh_CN
dc.subjecttransmembrane proton gradientzh_CN
dc.titleChanges of plasma membrane ATPase activity, membrane potential and transmembrane proton gradient in Kandelia candel and Avicennia marina seedlings with various salinitieszh_CN
dc.typeArticlezh_CN


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