Cadmium toxicity affects photosynthesis and plant growth at different levels

• Autorzy: Dias M.C. , Monteiro C. , Moutinho-Pereira J. , Correira C. , Goncalves B. , Santos C.
• Języki publikacji: EN

Abstrakty

EN

In this article we discuss and update some of the effects of Cd toxicity on the photosynthetic apparatus in a model crop Lactuca sativa. Seeds of L. sativa were germinated in solutions with 0, 1, 10 and 50 μM of Cd(NO3)2 and then transferred to a hydroponic culture medium. After 28 days, the effects of Cd on the photosynthetic apparatus of lettuce were analysed. Exposure of lettuce to 1 μM Cd(NO3)2 affected already plant growth (dry biomass), but, did not induce serious damages in the photosynthetic apparatus. However, increasing concentrations of this metal to 10 and 50 lM promoted a strong reduction of the maximum photochemical efficiency of PSII and an impairment of net CO2 assimilation rate, putatively due to Rubisco activity decrease. This ultimately results in a strong inhibition of plant growth. Nutrient uptake and carbohydrate assimilation were also severely affected by Cd.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 04
• Opis fizyczny: p.1281-1289,fig.,ref.

Twórcy

autor

Dias M.C.

• Cadmium toxicity affects photosynthesis and plant growth at different levels

autor

Monteiro C.

• Cadmium toxicity affects photosynthesis and plant growth at different levels

autor

Moutinho-Pereira J.

• Department of Biology and Environment, Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tra´s-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila Real, Portugal

autor

Correira C.

• Department of Biology and Environment, Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tra´s-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila Real, Portugal

autor

Goncalves B.

• Department of Biology and Environment, Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tra´s-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila Real, Portugal

autor

Santos C.

• Cadmium toxicity affects photosynthesis and plant growth at different levels

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