| Main Title |
Photosynthesis, Carbon Allocation, and Growth of Sulfur Dioxide Ecotypes of 'Geranium carolinianum' L. |
| Author |
Taylor, G. E. ;
Tingey, D. T. ;
Gunderson, C. A. ;
|
| CORP Author |
Corvallis Environmental Research Lab., OR. ;Oak Ridge National Lab., TN. Environmental Sciences Div. |
| Year Published |
1986 |
| Report Number |
EPA/600/J-86/434; |
| Stock Number |
PB88-153861 |
| Additional Subjects |
Toxicology ;
Sulfur dioxide ;
Photosynthesis ;
Reprints ;
Air pollution effects(Plants) ;
Geranium carolinianum ;
Carbon allocation
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-153861 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
The study investigated ways in which genetically determined differences in SO2 susceptibility resulting from ecotypic differentiation in Geranium carolinianum were expressed physiologically. The SO2-resistant and SO2-sensitive ecotypes were exposed to a combination of short- and long-term SO2 exposures to evaluate the responses of photosynthesis, H2S efflux from foliage (sulfur detoxification), photoassimilate retention, leaf-diffusive resistance to CO2, and growth. Although physiological accommodation of SO2 stress was observed in both ecotypes, it was more pronounced in the resistant ecotype. The physiological mechanisms underlying genetic differences in G. carolinianum in response to SO2 stress were concluded to be (1) dissimilar threshold levels of response to SO2 and/or its toxic derivatives and (2) differences in homeostatic processes governing the rate of repair or compensation for physiological injury. |
| Supplementary Notes |
Pub. in Oecologia 68, p350-357 1986. Prepared in cooperation with Oak Ridge National Lab., TN. Environmental Sciences Div. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Photosynthesis, Carbon Allocation, and Growth of Sulfur Dioxide Ecotypes of 'Geranium carolinianum' L. |
| PUB Date Free Form |
c1986 |
| Category Codes |
57Y; 68A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
808422596 |
| Origin |
NTIS |
| Type |
CAT |
