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Guidolotti G, Rey A, Medori M, Calfapietra C. Isoprenoids emission in Stipa tenacissima L.: Photosynthetic control and the effect of UV light. Environ Pollut 2016; 208:336-344. [PMID: 26552537 DOI: 10.1016/j.envpol.2015.09.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/25/2015] [Accepted: 09/28/2015] [Indexed: 06/05/2023]
Abstract
Fluxes of CO2 and isoprenoids were measured for the first time in Stipa tenacissima L (alfa grass), a perennial tussock grass dominant in the driest areas of Europe. In addition, we studied how those fluxes were influenced by environmental conditions, leaf ontogeny and UV radiation and compared emission rates in two contrasting seasons: summer when plants are mostly inactive and autumn, the growing season in this region. Leaf ontogeny significantly affected both photosynthesis and isoprenoids emission. Isoprene emission was positively correlated with photosynthesis, although a low isoprene emission was detected in brown leaves with a net carbon loss. Moreover, leaves with a significant lower photosynthesis emitted only monoterpenes, while at higher photosynthetic rates also isoprene was produced. Ambient UV radiation uncoupled photosynthesis and isoprene emission. It is speculated that alfa grass represent an exception from the general rules governing plant isoprenoid emitters.
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Affiliation(s)
- Gabriele Guidolotti
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Marconi 2, I-05010 Porano, TR, Italy.
| | - Ana Rey
- Department of Biogeography and Global Change, Natural Science Museum (MNCN), Spanish Scientific Council (CSIC), C/Serrano 115 28006 Madrid, Spain
| | - Mauro Medori
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Marconi 2, I-05010 Porano, TR, Italy
| | - Carlo Calfapietra
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Marconi 2, I-05010 Porano, TR, Italy; Global Change Research Centre, Bělidla 986/4a, 603 00 Brno, Czech Republic
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Morani A, Nowak D, Hirabayashi S, Guidolotti G, Medori M, Muzzini V, Fares S, Mugnozza GS, Calfapietra C. Comparing i-Tree modeled ozone deposition with field measurements in a periurban Mediterranean forest. Environ Pollut 2014; 195:202-209. [PMID: 25247877 DOI: 10.1016/j.envpol.2014.08.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 08/28/2014] [Accepted: 08/31/2014] [Indexed: 06/03/2023]
Abstract
Ozone flux estimates from the i-Tree model were compared with ozone flux measurements using the Eddy Covariance technique in a periurban Mediterranean forest near Rome (Castelporziano). For the first time i-Tree model outputs were compared with field measurements in relation to dry deposition estimates. Results showed generally a good agreement between predicted and measured ozone fluxes (least sum square=5.6 e(-4)) especially when cumulative values over the whole measurement campaign are considered. However at daily and hourly time-step some overestimations were observed in estimated values especially in hot dry periods. The use of different m values in the Ball-Berry formula in the different periods, produced the best fit between predicted and measured ozone fluxes. This suggests that a variable value for the coefficient m accounting for water availability may be appropriate to improve model estimates for Mediterranean and drought prone regions.
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Affiliation(s)
- A Morani
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Salaria Km 29,300, 00015 Monterotondo Scalo, Roma, Italy
| | - D Nowak
- USDA Forest Service, Northern Research Station, USA
| | - S Hirabayashi
- The Davey Institute, The Davey Tree Expert Company, USA
| | - G Guidolotti
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Salaria Km 29,300, 00015 Monterotondo Scalo, Roma, Italy
| | - M Medori
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Salaria Km 29,300, 00015 Monterotondo Scalo, Roma, Italy
| | - V Muzzini
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Salaria Km 29,300, 00015 Monterotondo Scalo, Roma, Italy
| | - S Fares
- Consiglio per la ricerca e la sperimentazione in agricoltura (CRA), Research Center for the Soil-Plant System (RPS), Rome, Italy
| | - G Scarascia Mugnozza
- Consiglio per la ricerca e la sperimentazione in agricoltura (CRA), Research Center for the Soil-Plant System (RPS), Rome, Italy
| | - C Calfapietra
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Salaria Km 29,300, 00015 Monterotondo Scalo, Roma, Italy; Global Change Research Centre, Bělidla 986/4a, 603 00 Brno, Czech Republic.
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Marteinsson V, Vaishampayan P, Kviderova J, Mapelli F, Medori M, Calfapietra C, Aguilera A, Hamisch D, Reynisson E, Magnússon S, Marasco R, Borin S, Calzada A, Souza-Egipsy V, González-Toril E, Amils R, Elster J, Hänsch R. A Laboratory of Extremophiles: Iceland Coordination Action for Research Activities on Life in Extreme Environments (CAREX) Field Campaign. Life (Basel) 2013; 3:211-33. [PMID: 25371340 PMCID: PMC4187199 DOI: 10.3390/life3010211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 01/23/2013] [Accepted: 02/05/2013] [Indexed: 11/16/2022] Open
Abstract
Existence of life in extreme environments has been known for a long time, and their habitants have been investigated by different scientific disciplines for decades. However, reports of multidisciplinary research are uncommon. In this paper, we report an interdisciplinary three-day field campaign conducted in the framework of the Coordination Action for Research Activities on Life in Extreme Environments (CAREX) FP7EU program, with participation of experts in the fields of life and earth sciences. In situ experiments and sampling were performed in a 20 m long hot springs system of different temperature (57 °C to 100 °C) and pH (2 to 4). Abiotic factors were measured to study their influence on the diversity. The CO2 and H2S concentration varied at different sampling locations in the system, but the SO2 remained the same. Four biofilms, mainly composed by four different algae and phototrophic protists, showed differences in photosynthetic activity. Varying temperature of the sampling location affects chlorophyll fluorescence, not only in the microbial mats, but plants (Juncus), indicating selective adaptation to the environmental conditions. Quantitative polymerase chain reaction (PCR), DNA microarray and denaturing gradient gel electrophoresis (DGGE)-based analysis in laboratory showed the presence of a diverse microbial population. Even a short duration (30 h) deployment of a micro colonizer in this hot spring system led to colonization of microorganisms based on ribosomal intergenic spacer (RISA) analysis. Polyphasic analysis of this hot spring system was possible due to the involvement of multidisciplinary approaches.
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Affiliation(s)
- Viggó Marteinsson
- Matis ohf. Food Safety, Environment and Genetics, Vinlandsleid 12, Reykjavik, 113, Iceland; E-Mails: (E.R.); (S.M.)
| | - Parag Vaishampayan
- Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California, Institute of Technology, Pasadena, CA 91109, USA; E-Mail:
| | - Jana Kviderova
- Institute of Botany AS CR, Dukelská 135, Třeboň, CZ-379 82 Czech Republic; E-Mails: (J.K.); (J.E.)
- Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice,CZ-370 05, Czech Republic
| | - Francesca Mapelli
- Department of Food, Environment and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, Milan, 20133, Italy; E-Mails: (F.M.); (R.M.); (S.B.)
| | - Mauro Medori
- Consiglio NazionaledelleRicercheIstituto di BiologiaAgroambientale e Forestale via Marconi 2-05010 Porano (TR), Italy; E-Mails: (M.M.); (C.C.)
| | - Carlo Calfapietra
- Consiglio NazionaledelleRicercheIstituto di BiologiaAgroambientale e Forestale via Marconi 2-05010 Porano (TR), Italy; E-Mails: (M.M.); (C.C.)
| | - Angeles Aguilera
- Centro de Astrobiología. INTA-CSIC. Torrenjón de Ardoz, Madrid, 28850, Spain; E-Mails: (A.A.); (V.S.-E.); (E.G.-T.); (R.A.)
| | - Domenica Hamisch
- Department of Plant Biology Technical University of Braunschweig, Pockelsstr. 14, Brunschweig, 38092, Germany; E-Mails: (D.H.); (R.H.)
| | - Eyjólfur Reynisson
- Matis ohf. Food Safety, Environment and Genetics, Vinlandsleid 12, Reykjavik, 113, Iceland; E-Mails: (E.R.); (S.M.)
| | - Sveinn Magnússon
- Matis ohf. Food Safety, Environment and Genetics, Vinlandsleid 12, Reykjavik, 113, Iceland; E-Mails: (E.R.); (S.M.)
| | - Ramona Marasco
- Department of Food, Environment and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, Milan, 20133, Italy; E-Mails: (F.M.); (R.M.); (S.B.)
| | - Sara Borin
- Department of Food, Environment and Nutritional Sciences (DeFENS), University of Milan, via Celoria 2, Milan, 20133, Italy; E-Mails: (F.M.); (R.M.); (S.B.)
| | - Abigail Calzada
- Geology Department, University of Oviedo, Jesús Arias de Velasc, Oviedo, 33005, Spain; E-Mail:
| | - Virginia Souza-Egipsy
- Centro de Astrobiología. INTA-CSIC. Torrenjón de Ardoz, Madrid, 28850, Spain; E-Mails: (A.A.); (V.S.-E.); (E.G.-T.); (R.A.)
| | - Elena González-Toril
- Centro de Astrobiología. INTA-CSIC. Torrenjón de Ardoz, Madrid, 28850, Spain; E-Mails: (A.A.); (V.S.-E.); (E.G.-T.); (R.A.)
| | - Ricardo Amils
- Centro de Astrobiología. INTA-CSIC. Torrenjón de Ardoz, Madrid, 28850, Spain; E-Mails: (A.A.); (V.S.-E.); (E.G.-T.); (R.A.)
| | - Josef Elster
- Institute of Botany AS CR, Dukelská 135, Třeboň, CZ-379 82 Czech Republic; E-Mails: (J.K.); (J.E.)
- Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice,CZ-370 05, Czech Republic
| | - Robert Hänsch
- Department of Plant Biology Technical University of Braunschweig, Pockelsstr. 14, Brunschweig, 38092, Germany; E-Mails: (D.H.); (R.H.)
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Medori M, Michelini L, Nogues I, Loreto F, Calfapietra C. The impact of root temperature on photosynthesis and isoprene emission in three different plant species. ScientificWorldJournal 2012; 2012:525827. [PMID: 22701360 PMCID: PMC3373142 DOI: 10.1100/2012/525827] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 04/01/2012] [Indexed: 11/22/2022] Open
Abstract
Most of the perennial plant species, particularly trees, emit volatile organic compounds (BVOCs) such as isoprene and monoterpenes, which in several cases have been demonstrated to protect against thermal shock and more generally against oxidative stress. In this paper, we show the response of three strong isoprene emitter species, namely, Phragmites australis, Populus x euramericana, and Salix phylicifolia exposed to artificial or natural warming of the root system in different conditions. This aspect has not been investigated so far while it is well known that warming the air around a plant stimulates considerably isoprene emission, as also shown in this paper. In the green house experiments where the warming corresponded with high stress conditions, as confirmed by higher activities of the main antioxidant enzymes, we found that isoprene uncoupled from photosynthesis at a certain stage of the warming treatment and that even when photosynthesis approached to zero isoprene emission was still ongoing. In the field experiment, in a typical cold-limited environment, warming did not affect isoprene emission whereas it increased significantly CO2 assimilation. Our findings suggest that the increase of isoprene could be a good marker of heat stress, whereas the decrease of isoprene a good marker of accelerated foliar senescence, two hypotheses that should be better investigated in the future.
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Affiliation(s)
- Mauro Medori
- Institute of Agro-Environmental & Forest Biology-IBAF, National Research Council-CNR, Via Salaria km 29,300, 00015 Monterotondo Scalo, Rome, Italy
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