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Toxic Effect of Cu2+ on Alternanthera philoxeroides Alleviated by Different Concentration of Ce3+ and Nd3+(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2009年01期
Page:
99-104
Research Field:
生物学
Publishing date:

Info

Title:
Toxic Effect of Cu2+ on Alternanthera philoxeroides Alleviated by Different Concentration of Ce3+ and Nd3+
Author(s):
Chen Suya
Department of Science and Technology,Nanjing Normal University,Nanjing 210046,China
Keywords:
C e 3+ ;  Nd 3+ ;  Cu 2+ ;  Alternanthera ph ilox ero ides (M art. ) G riseb. ;  tox ic effect;  relieve
PACS:
X173
DOI:
-
Abstract:
Alternanthera ph ilox eroides were cultiv ated in so lu tion o f 2m g /L Cu 2+ and different concentration of Ce 3+ and Nd 3+ for 7 days to inv estig ate the action of rare earths on the tox ic e ffect of heavy m eta .l Resu lts show that, under the low concentration of Ce3+ and Nd3+ , the conten t of chlorophy l,l so lub le prote in and H2O2, the activ ity o f pro tective enzym es ( SOD, POD, CAT ) are higher than tha t o f single Cu treatm ent, the accum ulation o fMDA and the O-#2 generating ra te are less com pa red w ith Cu po ison. H ow ever, w ith h igher concentrations o f Ce 3+ and Nd 3+ , the re liev ing effec t is ge tting weaker and w eaker, even aggravates the tox ic effect. Gene ra lly, the optimum concentration o f Ce 3+ and Nd 3+ is 5~ 715 m g /L forA lternanthera ph ilox eroides, and C e 3+ is better than Nd 3+ . The expression o f pro te in and m etabo lism o f ac tive oxyg en are responsib le for the reliv ing effect m entioned above.

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Last Update: 2013-04-23