| Ozone exposure and stomatal sluggishness in different plant physiognomic classes. | |
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MedLine Citation:
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PMID: 20537773 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Gas exchange responses to static and variable light were tested in three species: snap bean (Phaseolus vulgaris, two cultivars), California black oak (Quercus kelloggii), and blue oak (Q. douglasii). The effects of 1-month (snap beans) and 2-month (oaks) O(3) (ozone) exposure (70ppb over 8h per day in open-top chambers) were investigated. A delay in stomatal responses (i.e., 'sluggish' responses) to variable light was found to be both an effect of O(3) exposure and a reason for increased O(3) sensitivity in snap bean cultivars, as it implied higher O(3) uptake during times of disequilibrium. Sluggishness increased the time to open (thus limiting CO(2) uptake) and close stomata (thus increasing transpirational water loss) after abrupt changes in light level. Similar responses were shown by snap beans and oaks, suggesting that O(3)-induced stomatal sluggishness is a common trait among different plant physiognomic classes. |
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Authors:
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Elena Paoletti; Nancy E Grulke |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Environmental pollution (Barking, Essex : 1987) Volume: 158 ISSN: 1873-6424 ISO Abbreviation: Environ. Pollut. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-12 Completed Date: 2010-11-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8804476 Medline TA: Environ Pollut Country: England |
Other Details:
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Languages: eng Pagination: 2664-71 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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IPP-CNR, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Florence, Italy. e.paoletti@ipp.cnr.it |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants
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toxicity* Ozone / toxicity* Phaseolus / drug effects*, metabolism Photosynthesis / drug effects Plant Stomata / drug effects*, metabolism Plant Transpiration / drug effects Quercus / drug effects*, metabolism |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 10028-15-6/Ozone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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