Journal
PHOTOSYNTHETICA
Volume 52, Issue 1, Pages 148-151Publisher
SPRINGER
DOI: 10.1007/s11099-014-0016-y
Keywords
anthocyanins; dithiocarbamates; photosynthetic efficiency; toxicity
Categories
Funding
- Portuguese Foundation for Science and Technology [SFRH/BPD/41700/2007]
- European Regional Development Fund-FEDER through the Competitive Factors Thematic Operational Programme-COMPETE
- Foundation for Science and Technology-FCT, Portugal [PEst-C/CTM/LA0011/2011]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/41700/2007] Funding Source: FCT
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This work aimed to study the effects of commercial doses of the fungicide, Mancozeb, on the photosynthetic apparatus of lettuce young leaves (YL) and expanded leaves (EL). Seven days after Mancozeb application, chlorophyll a fluorescence, pigment contents, lipid peroxidation, and proline content were evaluated. Independently of leaf age, Mancozeb treatment reduced the efficiency of photosystem II photochemistry, increased the nonphotochemical quenching and proline content, decreased pigment contents, and induced lipid peroxidation. Moreover, EL showed a more stable photosynthetic apparatus, less prone to oxidative damages compared with YL. The parameters measured proved to be good markers for the rapid and preliminary diagnosis of fungicide toxicity.
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