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Inhibition of Corn and Sunflower Photosynthesis by Lead (1975)

BAZZAZ, F. A. ; CARLSON, ROGER W. ; ROLFE, G. L.

Oxford, UK : Blackwell Publishing Ltd

Physiologia plantarum 34 (1975), S. 0

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ISSN: 1399-3054

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: Detached corn and sunflower leaves supplied with PbCl2 via the transpiration stream exhibited reduced rates of photosynthesis. The difference between species in the amount of Pb taken up was in direct proportion to their respective transpiration rates. For both species the reduction in photosynthesis and the amount of Pb taken up increased with increasing treatment concentrations. A corresponding reduction occurred in the rate of transpiration suggesting that stomatal resistance may be increased by Pb contamination. The pathways of CO2 and water vapor exchange are discussed in relation to the effects of Pb on photosynthesis and transpiration.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1399-3054.1975.tb03847.x

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