« Previous AbstractEnhancing anaerobic digestion of cotton stalk by pretreatment with a microbial consortium (MC1)    Next AbstractEffects of elevated ozone on the emission of volatile isoprenoids from flowers and leaves of rose (Rosa sp.) varieties »

Plant Cell Environ

Title:		Interaction of drought and ozone exposure on isoprene emission from extensively cultivated poplar
Author(s):		Yuan X; Calatayud V; Gao F; Fares S; Paoletti E; Tian Y; Feng Z;
Address:		"State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China. Fundacion CEAM, c/Charles R. Darwin 14, Parque Tecnologico, Paterna, 46980, Valencia, Spain. Research Centre for Soil-Plant System, Council for Agricultural Research and Economics, Rome, Italy. National Research Council, Via Madonna del Piano 10, 50019, Sesto, Fiorentino, Italy. Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqing Road 18, Haidian District, Beijing, 100085, China. fzz@rcees.ac.cn. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China. fzz@rcees.ac.cn. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China. fzz@rcees.ac.cn"
Journal Title:		Plant Cell Environ
Year:		2016
Volume:		20160809
Issue:		10
Page Number:		2276 - 2287
DOI:		10.1111/pce.12798
ISSN/ISBN:		1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:		"The combined effects of ozone (O3 ) and drought on isoprene emission were studied for the first time. Young hybrid poplars (clone 546, Populus deltoides cv. 55/56 x P. deltoides cv. Imperial) were exposed to O3 (charcoal-filtered air, CF, and non-filtered air +40 ppb, E-O3 ) and soil water stress (well-watered, WW, and mild drought, MD, one-third irrigation) for 96 days. Consistent with light-saturated photosynthesis (Asat ), intercellular CO2 concentration (Ci ) and chlorophyll content, isoprene emission depended on drought, O3 , leaf position and sampling time. Drought stimulated emission (+38.4%), and O3 decreased it (-40.4%). Ozone increased the carbon cost per unit of isoprene emission. Ozone and drought effects were stronger in middle leaves (13th-15th from the apex) than in upper leaves (6th-8th). Only Asat showed a significant interaction between O3 and drought. When the responses were up-scaled to the entire-plant level, however, drought effects on total leaf area translated into around twice higher emission from WW plants in clean air than in E-O3 . Our results suggest that direct effects on plant emission rates and changes in total leaf area may affect isoprene emission from intensively cultivated hybrid poplar under combined MD and O3 exposure, with important feedbacks for air quality"
Keywords:		"Climate Change Dehydration/metabolism Droughts Ozone/*pharmacology Plant Leaves/drug effects/metabolism/physiology Populus/drug effects/metabolism/*physiology *Stress, Physiological Volatile Organic Compounds/metabolism drought forests ground-level ozone;"
Notes:		"MedlineYuan, Xiangyang Calatayud, Vicent Gao, Feng Fares, Silvano Paoletti, Elena Tian, Yuan Feng, Zhaozhong eng Research Support, Non-U.S. Gov't 2016/07/15 Plant Cell Environ. 2016 Oct; 39(10):2276-87. doi: 10.1111/pce.12798. Epub 2016 Aug 9"