Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks
We tested the effect of daytime chronic moderate ozone (O3) exposure, short-term acute exposure, and both chronic and acute O3 exposure combined on nocturnal transpiration in California black oak and blue oak seedlings. Chronic O3 exposure (70 ppb for 8 h/day) was implemented in open-top chambers fo...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2007-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2007.33 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567554736914432 |
|---|---|
| author | N. E. Grulke E. Paoletti R. L. Heath |
| author_facet | N. E. Grulke E. Paoletti R. L. Heath |
| author_sort | N. E. Grulke |
| collection | DOAJ |
| description | We tested the effect of daytime chronic moderate ozone (O3) exposure, short-term acute exposure, and both chronic and acute O3 exposure combined on nocturnal transpiration in California black oak and blue oak seedlings. Chronic O3 exposure (70 ppb for 8 h/day) was implemented in open-top chambers for either 1 month (California black oak) or 2 months (blue oak). Acute O3 exposure (~1 h in duration during the day, 120–220 ppb) was implemented in a novel gas exchange system that supplied and maintained known O3 concentrations to a leaf cuvette. When exposed to chronic daytime O3 exposure, both oaks exhibited increased nocturnal transpiration (without concurrent O3 exposure) relative to unexposed control leaves (1.8× and 1.6×, black and blue oak, respectively). Short-term acute and chronic O3 exposure did not further increase nocturnal transpiration in either species. In blue oak previously unexposed to O3, short-term acute O3 exposure significantly enhanced nocturnal transpiration (2.0×) relative to leaves unexposed to O3. California black oak was unresponsive to (only) short-term acute O3 exposure. Daytime chronic and/or acute O3 exposures can increase foliar water loss at night in deciduous oak seedlings. |
| format | Article |
| id | doaj-art-e4d0ece51a234647b987e4649d32d705 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2007-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-e4d0ece51a234647b987e4649d32d7052025-02-03T01:01:16ZengWileyThe Scientific World Journal1537-744X2007-01-01713414010.1100/tsw.2007.33Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian OaksN. E. Grulke0E. Paoletti1R. L. Heath2PSW Research, Station USDA Forest Service, Riverside, CA, USAIPP-CNR, Florence, ItalyBotany and Plant Sciences Department, University of California, Riverside, CA, USAWe tested the effect of daytime chronic moderate ozone (O3) exposure, short-term acute exposure, and both chronic and acute O3 exposure combined on nocturnal transpiration in California black oak and blue oak seedlings. Chronic O3 exposure (70 ppb for 8 h/day) was implemented in open-top chambers for either 1 month (California black oak) or 2 months (blue oak). Acute O3 exposure (~1 h in duration during the day, 120–220 ppb) was implemented in a novel gas exchange system that supplied and maintained known O3 concentrations to a leaf cuvette. When exposed to chronic daytime O3 exposure, both oaks exhibited increased nocturnal transpiration (without concurrent O3 exposure) relative to unexposed control leaves (1.8× and 1.6×, black and blue oak, respectively). Short-term acute and chronic O3 exposure did not further increase nocturnal transpiration in either species. In blue oak previously unexposed to O3, short-term acute O3 exposure significantly enhanced nocturnal transpiration (2.0×) relative to leaves unexposed to O3. California black oak was unresponsive to (only) short-term acute O3 exposure. Daytime chronic and/or acute O3 exposures can increase foliar water loss at night in deciduous oak seedlings.http://dx.doi.org/10.1100/tsw.2007.33 |
| spellingShingle | N. E. Grulke E. Paoletti R. L. Heath Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks The Scientific World Journal |
| title | Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks |
| title_full | Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks |
| title_fullStr | Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks |
| title_full_unstemmed | Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks |
| title_short | Chronic vs. Short-Term Acute O3 Exposure Effects on Nocturnal Transpiration in Two Californian Oaks |
| title_sort | chronic vs short term acute o3 exposure effects on nocturnal transpiration in two californian oaks |
| url | http://dx.doi.org/10.1100/tsw.2007.33 |
| work_keys_str_mv | AT negrulke chronicvsshorttermacuteo3exposureeffectsonnocturnaltranspirationintwocalifornianoaks AT epaoletti chronicvsshorttermacuteo3exposureeffectsonnocturnaltranspirationintwocalifornianoaks AT rlheath chronicvsshorttermacuteo3exposureeffectsonnocturnaltranspirationintwocalifornianoaks |