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Details for article 18 of 29 found articles
| Title: |
Measurement of photosynthesis as a way to assess phytotoxicity |
| Author: |
Boyer, John S. Younis, Hassan M. |
| Appeared in: |
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes |
| Paging: | Volume 15 (1980) nr. 6 pages 1099-1104 |
| Year: |
1980 |
| Contents: |
Toxic agents may affect photosynthesis either by altering the diffusion of CO2 to the photosynthesizing cells or by altering the chloroplast activity for CO2 fixation. Therefore, the effect of toxic chemicals can be assessed by measurement of the rate of CO2 fixation. The effects on photosynthesis caused by altered CO2 diffusion can be distinguished from those caused at the chloroplast level by evaluating the CO2 concentration inside the leaf. If CO2 concentrations remain constant or rise as photosynthesis declines, the inhibition must act on chloroplast activity. If the CO2 concentrations decrease as photosynthesis declines, the inhibition may be caused by slower diffusion of CO2into the leaf. The latter possibility would suggest a stomatal closure to be the most probable cause of the decline of photosynthesis. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 18 of 29 found articles
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