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Photosynthetic performance and anti-oxidative response of Cornus controversa seedlings under cadmium and lead stress
Author(s) -
Xiaoxia Huang,
Yonglei Jiang,
Cheng Xiao-mao,
Lilan Deng,
Xuncheng Liu
Publication year - 2018
Publication title -
bangladesh journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.152
H-Index - 17
eISSN - 2079-9926
pISSN - 0253-5416
DOI - 10.3329/bjb.v44i2.38510
Subject(s) - superoxide dismutase , malondialdehyde , cadmium , proline , peroxidase , photosynthesis , biology , chlorophyll , oxidative stress , horticulture , botany , chemistry , biochemistry , enzyme , organic chemistry , amino acid
The photosynthetic efficiency of Cornus controversa leaves was decreased significantly under Cd treatment while it was not affected by Pb exposure. Cd decreased while Pb treatment increased the chlorophyll contents of Cornus controversa leaves. Furthermore, the peroxidase (GPX) activities were decreased after Cd treatment while elevated by Pb exposure in Cornus controvera seedlings. In addition, both Cd and Pb exposures increased the malondialdehyde (MDA) and proline contents and elevated the superoxide dismutase (SOD) activities of Cornus controvera seedlings. Collectively, these results indicated that Cornus controversa may be more tolerant to Pb than Cd toxicity. This finding will contribute to the evaluation of planting Cornus controversa in heavy metal polluted soil conditions.

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