Record Display for the EPA National Library Catalog


Main Title Ozone Decreases Spring Root Growth and Root Carbohydrate Content in Ponderosa Pine the Year Following Exposure.
Author Andersen, C. P. ; Hogsett, W. E. ; Wessling, R. ; Plocher., M. ;
CORP Author Corvallis Environmental Research Lab., OR. ;NSI Technology Services Corp., Corvallis, OR.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-92/031;
Stock Number PB92-144039
Additional Subjects Ozone ; Air pollution effects(Plants) ; Pine trees ; Root development ; Carbohydrates ; Plant physiology ; Exposure ; Seedlings ; Seasonal variations ; Period of growth ; Plant growth ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB92-144039 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Storage carbohydrates are extremely important for new shoot and root development following dormancy or during periods of high stress. The hypothesis that ozone decreases carbohydrate storage and decreases new root growth during the year following exposure was investigated. The results suggest that (1) ponderosa pine seedlings exposed to 122 and 169 ppm hrs ozone for one season have significantly less root starch reserves available just prior to and during bud break the following year, and (2) spring root growth is decreased following ozone exposure. The carry-over effects of ozone stress may be important in long-lived perennial species which are annually subjected to ozone.