| Main Title |
Water Stress Reduces Ozone Injury via a Stomatal Mechanism. |
| Author |
Tingey, D. T. ;
Hogsett, W. E. ;
|
| CORP Author |
Corvallis Environmental Research Lab., OR. |
| Year Published |
1985 |
| Report Number |
EPA/600/J-85/208; |
| Stock Number |
PB86-117447 |
| Additional Subjects |
Ozone ;
Stress(Physiology) ;
Injuries ;
Bean plants ;
Tolerances(Physiology) ;
Water ;
Leaves(Botany) ;
Exposure ;
Response ;
Chlorophylls ;
Ethylene ;
Production ;
Reprints ;
Phaseolus vulgaris ;
Abscisic acid ;
Stomata
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-117447 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6p |
| Abstract |
Various studies have shown that water-stressed plants are more tolerant of ozone exposures than are unstressed plants. Two probable explanations for this tolerance are (a) stomatal closure which reduces ozone uptake and (b) biochemical or anatomical changes within the leaves. Phaseolus vulgaris cv Pinto bean plants were established and transferred to membrane systems which controlled the osmotic potential around the roots at -35 or -80 kilopascals for 5 days prior to ozone treatment (0 or 1.0 microliters per liter for 2 hours.) Both water-stressed and unstressed plants were sprayed with various concentrations of abscisic acid to close the stomata or with fusicoccin to induce stomata opening. The abaxial stomatal resistances of primary and trifoliate leaves were measured just prior to ozone exposure. Plant response to ozone was determined by stress ethylene production and chlorophyll loss. Both water stress and abscisic acid induced stomatal closure and reduced ozone injury. |
| Supplementary Notes |
Pub. in Plant Physiology 77, p944-947 Apr 85. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Water Stress Reduces Ozone Injury via a Stomatal Mechanism. |
| PUB Date Free Form |
1985 |
| Category Codes |
2D; 6S; 6C; 98D; 57W; 57C |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
601716607 |
| Origin |
NTIS |
| Type |
CAT |
