Effects of simulated acid precipitation on photosynthesis, chlorophyll fluorescence, and antioxidative enzymes in Cucumis sativus L.

Title:

Effects of simulated acid precipitation on photosynthesis, chlorophyll fluorescence, and antioxidative enzymes in Cucumis sativus L.

Creator:

Yu, Jiang-Quan, Ye, Su-Feng, and Huang, Li-Feng

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:16d43e0d-25b5-4bf2-a923-aaec916fa40c
uuid:16d43e0d-25b5-4bf2-a923-aaec916fa40c
issn:0300-3604
doi:10.1023/A:1022658504882

Subject:

acid rain, catalase, chlorophyll fluorescence, guaiacol peroxidase, lipid peroxidation, malonyldialdehyde, net photosynthetic rate, photosystem 2, and superoxide dismutase

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The effects of simulated acid rain on gas exchange, chlorophyll fluorescence, and anti-oxidative enzyme activity in cucumber seedlings (Cucumis sativus L. cv. Jingchun No. 4) were investigated. Acid rain significantly reduced net photosynthetic rate and mainly non-stomatal factors contributed to the decrease of photosynthesis during the experimental period. The reduced photosynthesis was associated with a decreased maximal photochemical efficiency (Fv/Fm) and the average quantum yield of the photosystem 2 (PS2) reaction centres (ΦPS2). Meanwhile, acid rain significantly increased the activities of guaiacol peroxidase (GPX) and superoxide dismutase (SOD), but decreased the activity of catalase (CAT) together with an increased content of malonyldialdehyde (MDA), Hence the changes in photosynthesis in acid rain treatment might be a secondary effect of acidity damage probably due to lipid peroxidation of lipids and proteins in thylakoid membrane rather than direct effect on PS2 reaction centre. and Jing-Quan Yu, Su-Feng Ye, Li-Feng Huang.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

331-335

Source:

Photosynthetica | 2002 Volume:40 | Number:3

Harvested from:

CDK

Metadata only:

false