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Yáñez-Serrano AM, Corbera J, Portillo-Estrada M, Janssens IA, Llusià J, Filella I, Peñuelas J, Preece C, Sabater F, Fernández-Martínez M. Drivers of biogenic volatile organic compound emissions in hygrophytic bryophytes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174293. [PMID: 38936717 DOI: 10.1016/j.scitotenv.2024.174293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 05/16/2024] [Accepted: 06/23/2024] [Indexed: 06/29/2024]
Abstract
Bryophytes can both emit and take up biogenic volatile organic compounds (BVOCs) to and from the environment. Despite the scarce study of these exchanges, BVOCs have been shown to be important for a wide range of ecological roles. Bryophytes are the most ancient clade of land plants and preserve very similar traits to those first land colonisers. Therefore, the study of these plants can help understand the early processes of BVOC emissions as an adaptation to terrestrial life. Here, we determine the emission rates of BVOCs from different bryophyte species to understand what drives such emissions. We studied 26 bryophyte species from temperate regions that can be found in mountain springs located in NE Spain. Bryophyte BVOC emission presented no significant phylogenetic signal for any of the compounds analysed. Hence, we used mixed linear models to investigate the species-specific differences and eco-physiological and environmental drivers of bryophyte BVOC emission. In general, species-specific variability was the main factor explaining bryophyte BVOC emissions; but additionally, photosynthetic rates and light intensity increased BVOC emissions. Despite emission measurements reported here were conducted at 30°, and may not directly correspond to emission rates in natural conditions, most of the screened species have never been measured before for BVOC emissions and therefore this information can help understand the drivers of the emissions of BVOCs in bryophytes.
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Affiliation(s)
- A M Yáñez-Serrano
- IDAEA-CSIC, 08034 Barcelona, Spain; CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain.
| | - J Corbera
- Delegació de la Serralada Litoral Central, ICHN, Barcelona, Catalonia, Spain
| | - M Portillo-Estrada
- PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
| | - I A Janssens
- PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium
| | - J Llusià
- CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain
| | - I Filella
- CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain
| | - J Peñuelas
- CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain
| | - C Preece
- IRTA, Torre Marimón, Caldes de Montbui, Catalonia, Spain
| | - F Sabater
- BEECA-UB, Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, E08028 Barcelona, Catalonia, Spain
| | - M Fernández-Martínez
- CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; CSIC, Global Ecology Unit, CREAF-CSIC-UAB, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; Delegació de la Serralada Litoral Central, ICHN, Barcelona, Catalonia, Spain; BEECA-UB, Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, E08028 Barcelona, Catalonia, Spain
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2
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Hildebrand GA, Honeker LK, Freire-Zapata V, Ayala-Ortiz C, Rajakaruna S, Fudyma J, Daber LE, AminiTabrizi R, Chu RL, Toyoda J, Flowers SE, Hoyt DW, Hamdan R, Gil-Loaiza J, Shi L, Dippold MA, Ladd SN, Werner C, Meredith LK, Tfaily MM. Uncovering the dominant role of root metabolism in shaping rhizosphere metabolome under drought in tropical rainforest plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165689. [PMID: 37481084 DOI: 10.1016/j.scitotenv.2023.165689] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/29/2023] [Accepted: 07/19/2023] [Indexed: 07/24/2023]
Abstract
Plant-soil-microbe interactions are crucial for driving rhizosphere processes that contribute to metabolite turnover and nutrient cycling. With the increasing frequency and severity of water scarcity due to climate warming, understanding how plant-mediated processes, such as root exudation, influence soil organic matter turnover in the rhizosphere is essential. In this study, we used 16S rRNA gene amplicon sequencing, rhizosphere metabolomics, and position-specific 13C-pyruvate labeling to examine the effects of three different plant species (Piper auritum, Hibiscus rosa sinensis, and Clitoria fairchildiana) and their associated microbial communities on soil organic carbon turnover in the rhizosphere. Our findings indicate that in these tropical plants, the rhizosphere metabolome is primarily shaped by the response of roots to drought rather than direct shifts in the rhizosphere bacterial community composition. Specifically, the reduced exudation of plant roots had a notable effect on the metabolome of the rhizosphere of P. auritum, with less reliance on neighboring microbes. Contrary to P. auritum, H. rosa sinensis and C. fairchildiana experienced changes in their exudate composition during drought, causing alterations to the bacterial communities in the rhizosphere. This, in turn, had a collective impact on the rhizosphere's metabolome. Furthermore, the exclusion of phylogenetically distant microbes from the rhizosphere led to shifts in its metabolome. Additionally, C. fairchildiana appeared to be associated with only a subset of symbiotic bacteria under drought conditions. These results indicate that plant species-specific microbial interactions systematically change with the root metabolome. As roots respond to drought, their associated microbial communities adapt, potentially reinforcing the drought tolerance strategies of plant roots. These findings have significant implications for maintaining plant health and preference during drought stress and improving plant performance under climate change.
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Affiliation(s)
- Gina A Hildebrand
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA
| | - Linnea K Honeker
- BIO5 Institute, The University of Arizona, 1657 E Helen St., Tucson, AZ 85719, USA; School of Natural Resources and the Environment, University of Arizona, 1064 E Lowell St., Tucson, AZ 85721, USA
| | - Viviana Freire-Zapata
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA
| | - Christian Ayala-Ortiz
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA
| | - Sumudu Rajakaruna
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA
| | - Jane Fudyma
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA; Department of Plant Pathology, University of California, Davis, One Shields Avenue, Davis, CA 95816, USA
| | - L Erik Daber
- Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Roya AminiTabrizi
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA
| | - Rosalie L Chu
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA
| | - Jason Toyoda
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA
| | - Sarah E Flowers
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA
| | - David W Hoyt
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA
| | - Rasha Hamdan
- Department of Chemistry and Biochemistry, Lebanese University, Beirut, Lebanon
| | - Juliana Gil-Loaiza
- School of Natural Resources and the Environment, University of Arizona, 1064 E Lowell St., Tucson, AZ 85721, USA
| | - Lingling Shi
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, Schnarrenbergstrasse 94-96, 72076 Tuebingen, Germany
| | - Michaela A Dippold
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, Schnarrenbergstrasse 94-96, 72076 Tuebingen, Germany
| | - S Nemiah Ladd
- Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany; Department of Environmental Science, University of Basel, Bernoullistrasse 30/32, 4056 Basel, Switzerland
| | - Christiane Werner
- Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Laura K Meredith
- BIO5 Institute, The University of Arizona, 1657 E Helen St., Tucson, AZ 85719, USA; School of Natural Resources and the Environment, University of Arizona, 1064 E Lowell St., Tucson, AZ 85721, USA; Biosphere 2, University of Arizona, 32540 S Biosphere Rd, Oracle, AZ 85739, USA
| | - Malak M Tfaily
- Department of Environmental Science, University of Arizona, 1177 E 4th St., AZ 85721, USA; BIO5 Institute, The University of Arizona, 1657 E Helen St., Tucson, AZ 85719, USA; Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA 99354, USA.
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3
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Ladd SN, Daber LE, Bamberger I, Kübert A, Kreuzwieser J, Purser G, Ingrisch J, Deleeuw J, van Haren J, Meredith LK, Werner C. Leaf-level metabolic changes in response to drought affect daytime CO2 emission and isoprenoid synthesis pathways. TREE PHYSIOLOGY 2023; 43:1917-1932. [PMID: 37552065 PMCID: PMC10643046 DOI: 10.1093/treephys/tpad094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/28/2023] [Accepted: 07/31/2023] [Indexed: 08/09/2023]
Abstract
In the near future, climate change will cause enhanced frequency and/or severity of droughts in terrestrial ecosystems, including tropical forests. Drought responses by tropical trees may affect their carbon use, including production of volatile organic compounds (VOCs), with implications for carbon cycling and atmospheric chemistry that are challenging to predict. It remains unclear how metabolic adjustments by mature tropical trees in response to drought will affect their carbon fluxes associated with daytime CO2 production and VOC emission. To address this gap, we used position-specific 13C-pyruvate labeling to investigate leaf CO2 and VOC fluxes from four tropical species before and during a controlled drought in the enclosed rainforest of Biosphere 2 (B2). Overall, plants that were more drought-sensitive had greater reductions in daytime CO2 production. Although daytime CO2 production was always dominated by non-mitochondrial processes, the relative contribution of CO2 from the tricarboxylic acid cycle tended to increase under drought. A notable exception was the legume tree Clitoria fairchildiana R.A. Howard, which had less anabolic CO2 production than the other species even under pre-drought conditions, perhaps due to more efficient refixation of CO2 and anaplerotic use for amino acid synthesis. The C. fairchildiana was also the only species to allocate detectable amounts of 13C label to VOCs and was a major source of VOCs in B2. In C. fairchildiana leaves, our data indicate that intermediates from the mevalonic acid (MVA) pathway are used to produce the volatile monoterpene trans-β-ocimene, but not isoprene. This apparent crosstalk between the MVA and methylerythritol phosphate pathways for monoterpene synthesis declined with drought. Finally, although trans-β-ocimene emissions increased under drought, it was increasingly sourced from stored intermediates and not de novo synthesis. Unique metabolic responses of legumes may play a disproportionate role in the overall changes in daytime CO2 and VOC fluxes in tropical forests experiencing drought.
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Affiliation(s)
- S Nemiah Ladd
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
- Department of Environmental Sciences, University of Basel, Bernoullistrasse 30, Basel 4056, Switzerland
| | - L Erik Daber
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
| | - Ines Bamberger
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
- Atmospheric Chemistry Group, University of Bayreuth (BayCEER), Dr–Hans–Frisch–Straße 1–3, Bayreuth 95448, Germany
| | - Angelika Kübert
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
- Institute for Atmospheric and Earth System Research, University of Helsinki, Pietari Kalmin katu 5, Helsinki 00014, Finland
| | - Jürgen Kreuzwieser
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
| | - Gemma Purser
- School of Chemistry, The University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, UK
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik EH26 0QB, UK
| | - Johannes Ingrisch
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
- Department of Ecology, University of Innsbruck, Sternwartestrasse 15, Innsbruck 6020, Austria
| | - Jason Deleeuw
- Biosphere 2, University of Arizona, 32540 S. Biosphere Rd, Oracle, AZ 85739, USA
| | - Joost van Haren
- Biosphere 2, University of Arizona, 32540 S. Biosphere Rd, Oracle, AZ 85739, USA
- Honors College, University of Arizona, 1101 E. Mabel Street, Tucson, AZ 85719, USA
| | - Laura K Meredith
- Biosphere 2, University of Arizona, 32540 S. Biosphere Rd, Oracle, AZ 85739, USA
- School of Natural Resources and the Environment, University of Arizona, 1064 E. Lowell St., Tucson, AZ, 85721, USA
| | - Christiane Werner
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Georges–Köhler–Allee 053/054, Freiburg 79110, Germany
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4
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Honeker LK, Pugliese G, Ingrisch J, Fudyma J, Gil-Loaiza J, Carpenter E, Singer E, Hildebrand G, Shi L, Hoyt DW, Chu RK, Toyoda J, Krechmer JE, Claflin MS, Ayala-Ortiz C, Freire-Zapata V, Pfannerstill EY, Daber LE, Meeran K, Dippold MA, Kreuzwieser J, Williams J, Ladd SN, Werner C, Tfaily MM, Meredith LK. Drought re-routes soil microbial carbon metabolism towards emission of volatile metabolites in an artificial tropical rainforest. Nat Microbiol 2023; 8:1480-1494. [PMID: 37524975 PMCID: PMC10390333 DOI: 10.1038/s41564-023-01432-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 06/19/2023] [Indexed: 08/02/2023]
Abstract
Drought impacts on microbial activity can alter soil carbon fate and lead to the loss of stored carbon to the atmosphere as CO2 and volatile organic compounds (VOCs). Here we examined drought impacts on carbon allocation by soil microbes in the Biosphere 2 artificial tropical rainforest by tracking 13C from position-specific 13C-pyruvate into CO2 and VOCs in parallel with multi-omics. During drought, efflux of 13C-enriched acetate, acetone and C4H6O2 (diacetyl) increased. These changes represent increased production and buildup of intermediate metabolites driven by decreased carbon cycling efficiency. Simultaneously,13C-CO2 efflux decreased, driven by a decrease in microbial activity. However, the microbial carbon allocation to energy gain relative to biosynthesis was unchanged, signifying maintained energy demand for biosynthesis of VOCs and other drought-stress-induced pathways. Overall, while carbon loss to the atmosphere via CO2 decreased during drought, carbon loss via efflux of VOCs increased, indicating microbially induced shifts in soil carbon fate.
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Affiliation(s)
- Linnea K Honeker
- Biosphere 2, University of Arizona, Tucson, AZ, USA
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Giovanni Pugliese
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
- Max Planck Institute for Chemistry, Atmospheric Chemistry Department, Mainz, Germany
| | - Johannes Ingrisch
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
- Department of Ecology, Universität Innsbruck, Innsbruck, Austria
| | - Jane Fudyma
- Department of Environmental Sciences, University of Arizona, Tucson, AZ, USA
- Department of Plant Pathology, University of California, Davis, CA, USA
| | - Juliana Gil-Loaiza
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | | | | | - Gina Hildebrand
- Department of Environmental Sciences, University of Arizona, Tucson, AZ, USA
| | - Lingling Shi
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, Tuebingen, Germany
| | - David W Hoyt
- Environmental Molecular Science Laboratory (EMSL), Earth and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Rosalie K Chu
- Environmental Molecular Science Laboratory (EMSL), Earth and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jason Toyoda
- Environmental Molecular Science Laboratory (EMSL), Earth and Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jordan E Krechmer
- Aerodyne Research, Inc., Billerica, MA, USA
- Bruker Daltonics Inc., Billerica, MA, USA
| | | | | | | | - Eva Y Pfannerstill
- Max Planck Institute for Chemistry, Atmospheric Chemistry Department, Mainz, Germany
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA, USA
| | - L Erik Daber
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | | | - Michaela A Dippold
- Geo-Biosphere Interactions, Department of Geosciences, University of Tuebingen, Tuebingen, Germany
| | - Jürgen Kreuzwieser
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | - Jonathan Williams
- Max Planck Institute for Chemistry, Atmospheric Chemistry Department, Mainz, Germany
| | - S Nemiah Ladd
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
- Department of Environmental Sciences, University of Basel, Basel, Switzerland
| | - Christiane Werner
- Ecosystem Physiology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany
| | - Malak M Tfaily
- Department of Environmental Sciences, University of Arizona, Tucson, AZ, USA
| | - Laura K Meredith
- Biosphere 2, University of Arizona, Tucson, AZ, USA.
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA.
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5
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Abbas F, O'Neill Rothenberg D, Zhou Y, Ke Y, Wang HC. Volatile organic compounds as mediators of plant communication and adaptation to climate change. PHYSIOLOGIA PLANTARUM 2022; 174:e13840. [PMID: 36512339 DOI: 10.1111/ppl.13840] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/18/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Plant volatile organic compounds are the most abundant and structurally diverse plant secondary metabolites. They play a key role in plant lifespan via direct and indirect plant defenses, attracting pollinators, and mediating various interactions between plants and their environment. The ecological diversity and context-dependence of plant-plant communication driven by volatiles are crucial elements that influence plant performance in different habitats. Plant volatiles are also valued for their multiple applications in food, flavor, pharmaceutical, and cosmetics industries. In the current review, we summarize recent advances that have elucidated the functions of plant volatile organic compounds as mediators of plant interaction at community and individual levels, highlighting the complexities of plant receiver feedback to various signals and cues. This review emphasizes volatile terpenoids, the most abundant class of plant volatile organic compounds, highlighting their role in plant adaptability to global climate change and stress-response pathways that are integral to plant growth and survival. Finally, we identify research gaps and suggest future research directions.
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Affiliation(s)
- Farhat Abbas
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Dylan O'Neill Rothenberg
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
| | - Yiwei Zhou
- Guangdong Key Laboratory of Ornamental Plant Germplasm Innovation and Utilization, Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Yanguo Ke
- College of Agriculture and Life Sciences, Yunnan Urban Agricultural Engineering & Technological Research Center, Kunming University, Kunming, China
- College of Economics and Management, Kunming University, Kunming, China
| | - Hui-Cong Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, China
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6
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Meischner M, Haberstroh S, Daber LE, Kreuzwieser J, Caldeira MC, Schnitzler JP, Werner C. Soil VOC emissions of a Mediterranean woodland are sensitive to shrub invasion. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:967-978. [PMID: 35661369 DOI: 10.1111/plb.13445] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Many belowground processes, such as soil respiration and soil-atmosphere VOC (volatile organic compounds) exchange, are closely linked to soil microbiological processes. However, little is known about how changes in plant species cover, i.e. after plant invasion, alter these soil processes. In particular, the response of soil VOC emissions to plant invasion is not well understood. We analysed soil VOC emissions and soil respiration of a Mediterranean cork oak (Quercus suber) ecosystem, comparing soil VOC emissions from a non-invaded Q. suber woodland to one invaded by the shrub Cistus ladanifer. Soil VOC emissions were determined under controlled conditions using online proton-transfer time-of-flight mass spectrometry. Net soil VOC emissions were measured by exposing soils with or without litter to different temperature and soil moisture conditions. Soil VOC emissions were sensitive to C. ladanifer invasion. Highest net emission rates were determined for oxygenated VOC (acetaldehyde, acetone, methanol, acetic acid), and high temperatures enhanced total VOC emissions. Invasion affected the relative contribution of various VOC. Methanol and acetaldehyde were emitted exclusively from litter and were associated with the non-invaded sites. In contrast, acetone emissions increased in response to shrub presence. Interestingly, low soil moisture enhanced the effect of shrub invasion on VOC emissions. Our results indicate that shrub invasion substantially influences important belowground processes in cork oak ecosystems, in particular soil VOC emissions. High soil moisture is suggested to diminish the invasion effect through a moisture-induced increase in microbial decomposition rates of soil VOC.
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Affiliation(s)
- M Meischner
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | - S Haberstroh
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | - L E Daber
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | - J Kreuzwieser
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | - M C Caldeira
- Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal
| | - J-P Schnitzler
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - C Werner
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
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7
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Zhang Z, Wang H, Yang B, Shu J, Yu Z, Wei Z, Huang J, Jiang K, Guo Y, Li Z. Photoinduced Associative Ionization Time-of-Flight Mass Spectrometry for the Sensitive Determination of Monoterpenes. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2049284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Zuojian Zhang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Haijie Wang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Bo Yang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Jinian Shu
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Environment Simulation and Pollution Control, Beijing, People’s Republic of China
| | - Zhangqi Yu
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Zhiyang Wei
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Jingyun Huang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, State Key Laboratory of Environment Simulation and Pollution Control, Beijing, People’s Republic of China
| | - Kui Jiang
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Yedong Guo
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Zhen Li
- National Engineering Laboratory for VOCs Pollution Control Material and Technology, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
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8
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Honeker LK, Hildebrand GA, Fudyma JD, Daber LE, Hoyt D, Flowers SE, Gil-Loaiza J, Kübert A, Bamberger I, Anderton CR, Cliff J, Leichty S, AminiTabrizi R, Kreuzwieser J, Shi L, Bai X, Velickovic D, Dippold MA, Ladd SN, Werner C, Meredith LK, Tfaily MM. Elucidating Drought-Tolerance Mechanisms in Plant Roots through 1H NMR Metabolomics in Parallel with MALDI-MS, and NanoSIMS Imaging Techniques. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:2021-2032. [PMID: 35048708 DOI: 10.1021/acs.est.1c06772] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
As direct mediators between plants and soil, roots play an important role in metabolic responses to environmental stresses such as drought, yet these responses are vastly uncharacterized on a plant-specific level, especially for co-occurring species. Here, we aim to examine the effects of drought on root metabolic profiles and carbon allocation pathways of three tropical rainforest species by combining cutting-edge metabolomic and imaging technologies in an in situ position-specific 13C-pyruvate root-labeling experiment. Further, washed (rhizosphere-depleted) and unwashed roots were examined to test the impact of microbial presence on root metabolic pathways. Drought had a species-specific impact on the metabolic profiles and spatial distribution in Piper sp. and Hibiscus rosa sinensis roots, signifying different defense mechanisms; Piper sp. enhanced root structural defense via recalcitrant compounds including lignin, while H. rosa sinensis enhanced biochemical defense via secretion of antioxidants and fatty acids. In contrast, Clitoria fairchildiana, a legume tree, was not influenced as much by drought but rather by rhizosphere presence where carbohydrate storage was enhanced, indicating a close association with symbiotic microbes. This study demonstrates how multiple techniques can be combined to identify how plants cope with drought through different drought-tolerance strategies and the consequences of such changes on below-ground organic matter composition.
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Affiliation(s)
- Linnea K Honeker
- BIO5 Institute, The University of Arizona, 1657 East Helen Street., Tucson, Arizona 85719, United States
- Biosphere 2, University of Arizona, 32540 South Biosphere Road, Oracle, Arizona 85739, United States
| | - Gina A Hildebrand
- Department of Environmental Science, University of Arizona, 1177 East Fourth Street, Tucson, Arizona 85721, United States
| | - Jane D Fudyma
- Department of Environmental Science, University of Arizona, 1177 East Fourth Street, Tucson, Arizona 85721, United States
| | - L Erik Daber
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - David Hoyt
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Sarah E Flowers
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Juliana Gil-Loaiza
- School of Natural Resources and the Environment, University of Arizona, 1064 East Lowell Sreet, Tucson, Arizona 85721, United States
| | - Angelika Kübert
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Ines Bamberger
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Christopher R Anderton
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - John Cliff
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Sarah Leichty
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Roya AminiTabrizi
- Department of Environmental Science, University of Arizona, 1177 East Fourth Street, Tucson, Arizona 85721, United States
| | - Jürgen Kreuzwieser
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Lingling Shi
- Biogeochemistry of Agroecosystems, Department of Crop Science, Georg August University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Xuejuan Bai
- State Key Laboratory of Soil Erosion and Dry Land Farming on Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, 712100 Shaanxi, China
| | - Dusan Velickovic
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Michaela A Dippold
- Biogeochemistry of Agroecosystems, Department of Crop Science, Georg August University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - S Nemiah Ladd
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Christiane Werner
- Chair of Ecosystem Physiology, Georges-Köhler-Allee 53/54, University of Freiburg, 79110 Freiburg, Germany
| | - Laura K Meredith
- BIO5 Institute, The University of Arizona, 1657 East Helen Street., Tucson, Arizona 85719, United States
- Biosphere 2, University of Arizona, 32540 South Biosphere Road, Oracle, Arizona 85739, United States
- School of Natural Resources and the Environment, University of Arizona, 1064 East Lowell Sreet, Tucson, Arizona 85721, United States
| | - Malak M Tfaily
- BIO5 Institute, The University of Arizona, 1657 East Helen Street., Tucson, Arizona 85719, United States
- Department of Environmental Science, University of Arizona, 1177 East Fourth Street, Tucson, Arizona 85721, United States
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
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9
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Meredith LK, Tfaily MM. Capturing the microbial volatilome: an oft overlooked 'ome'. Trends Microbiol 2022; 30:622-631. [PMID: 35039213 DOI: 10.1016/j.tim.2021.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 12/03/2021] [Accepted: 12/08/2021] [Indexed: 11/26/2022]
Abstract
Among the diverse metabolites produced by microbial communities, some are volatile. Volatile organic compounds (VOCs) are vigorously cycled by microbes as metabolic substrates and products and as signaling molecules. Yet, current microbial metabolomic studies predominantly focus on nonvolatile metabolites and overlook VOCs, which therefore represent a missing component of the metabolome. Advances in VOC detection now allow simultaneous observation of the numerous VOCs constituting the 'volatilome' of microbial systems. We present a roadmap for integrating and advancing VOC and other 'omics approaches and highlight the potential for realtime VOC measurements to help overcome limitations in discrete 'omics sampling. Including volatile metabolites in metabolomics, both conceptually and in practice, will build a more comprehensive understanding of microbial processes across ecological communities.
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Affiliation(s)
- Laura K Meredith
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA; BIO5 Institute, University of Arizona, Tucson, AZ, USA.
| | - Malak M Tfaily
- BIO5 Institute, University of Arizona, Tucson, AZ, USA; Department of Environmental Science, University of Arizona, Tucson, AZ, USA.
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10
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Werner C, Meredith LK, Ladd SN, Ingrisch J, Kübert A, van Haren J, Bahn M, Bailey K, Bamberger I, Beyer M, Blomdahl D, Byron J, Daber E, Deleeuw J, Dippold MA, Fudyma J, Gil-Loaiza J, Honeker LK, Hu J, Huang J, Klüpfel T, Krechmer J, Kreuzwieser J, Kühnhammer K, Lehmann MM, Meeran K, Misztal PK, Ng WR, Pfannerstill E, Pugliese G, Purser G, Roscioli J, Shi L, Tfaily M, Williams J. Ecosystem fluxes during drought and recovery in an experimental forest. Science 2021; 374:1514-1518. [PMID: 34914503 DOI: 10.1126/science.abj6789] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Christiane Werner
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Laura K Meredith
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA.,Biosphere 2, University of Arizona, Oracle, AZ, USA.,BIO5 Institute, The University of Arizona, Tucson, AZ, USA
| | - S Nemiah Ladd
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Johannes Ingrisch
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Angelika Kübert
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Joost van Haren
- Biosphere 2, University of Arizona, Oracle, AZ, USA.,Honors College, University of Arizona, Tucson, AZ, USA
| | - Michael Bahn
- Department of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Kinzie Bailey
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Ines Bamberger
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Matthias Beyer
- Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig, Braunschweig, Germany
| | - Daniel Blomdahl
- Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Joseph Byron
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Erik Daber
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | | | - Michaela A Dippold
- Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany
| | - Jane Fudyma
- Department of Environmental Science, University of Arizona, Tucson, AZ, USA
| | - Juliana Gil-Loaiza
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | | | - Jia Hu
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA
| | - Jianbei Huang
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Thomas Klüpfel
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | | | - Jürgen Kreuzwieser
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany
| | - Kathrin Kühnhammer
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig, Braunschweig, Germany
| | - Marco M Lehmann
- Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland
| | | | - Pawel K Misztal
- Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA
| | - Wei-Ren Ng
- Biosphere 2, University of Arizona, Oracle, AZ, USA
| | - Eva Pfannerstill
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Giovanni Pugliese
- Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.,Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany
| | - Gemma Purser
- Centre for Ecology and Hydrology, University of Edinburgh, Edinburgh, UK
| | | | - Lingling Shi
- Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany
| | - Malak Tfaily
- BIO5 Institute, The University of Arizona, Tucson, AZ, USA.,Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany.,Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jonathan Williams
- Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany.,Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus
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11
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Kreuzwieser J, Meischner M, Grün M, Yáñez-Serrano AM, Fasbender L, Werner C. Drought affects carbon partitioning into volatile organic compound biosynthesis in Scots pine needles. THE NEW PHYTOLOGIST 2021; 232:1930-1943. [PMID: 34523149 DOI: 10.1111/nph.17736] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The effect of drought on the interplay of processes controlling carbon partitioning into plant primary and secondary metabolisms, such as respiratory CO2 release and volatile organic compound (VOC) biosynthesis, is not fully understood. To elucidate the effect of drought on the fate of cellular C sources into VOCs vs CO2 , we conducted tracer experiments with 13 CO2 and position-specific 13 C-labelled pyruvate, a key metabolite between primary and secondary metabolisms, in Scots pine seedlings. We determined the stable carbon isotope composition of leaf exchanged CO2 and VOC. Drought reduced the emission of the sesquiterpenes α-farnesene and β-farnesene but did not affect 13 C-incorporation from 13 C-pyruvate. The labelling patterns suggest that farnesene biosynthesis partially depends on isopentenyl diphosphate crosstalk between chloroplasts and cytosol, and that drought inhibits this process. Contrary to sesquiterpenes, drought did not affect emission of isoprene, monoterpenes and some oxygenated compounds. During the day, pyruvate was used in the TCA cycle to a minor degree but was mainly consumed in pathways of secondary metabolism. Drought partly inhibited such pathways, while allocation into the TCA cycle increased. Drought caused a re-direction of pyruvate consuming pathways, which contributed to maintenance of isoprene and monoterpene production despite strongly inhibited photosynthesis. This underlines the importance of these volatiles for stress tolerance.
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Affiliation(s)
- Jürgen Kreuzwieser
- Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, Freiburg, 79110, Germany
| | - Mirjam Meischner
- Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, Freiburg, 79110, Germany
| | - Michel Grün
- Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, Freiburg, 79110, Germany
| | - Ana Maria Yáñez-Serrano
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), Barcelona, 08034, Spain
- Center for Ecological Research and Forestry Applications (CREAF), Cerdanyola del Vallès, 08193, Spain
- Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, 08193, Spain
| | - Lukas Fasbender
- Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, Freiburg, 79110, Germany
| | - Christiane Werner
- Chair of Ecosystem Physiology, Albert-Ludwigs-Universität Freiburg, Freiburg, 79110, Germany
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12
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Ladd SN, Nelson DB, Bamberger I, Daber LE, Kreuzwieser J, Kahmen A, Werner C. Metabolic exchange between pathways for isoprenoid synthesis and implications for biosynthetic hydrogen isotope fractionation. THE NEW PHYTOLOGIST 2021; 231:1708-1719. [PMID: 34028817 DOI: 10.1111/nph.17510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 05/16/2021] [Indexed: 06/12/2023]
Abstract
Hydrogen isotope ratios of plant lipids are used for paleoclimate reconstruction, but are influenced by both source water and biosynthetic processes. Measuring 2 H : 1 H ratios of multiple compounds produced by different pathways could allow these effects to be separated, but hydrogen isotope fractionations during isoprenoid biosynthesis remain poorly constrained. To investigate how hydrogen isotope fractionation during isoprenoid biosynthesis is influenced by molecular exchange between the cytosolic and plastidial production pathways, we paired position-specific 13 C-pyruvate labeling with hydrogen isotope measurements of lipids in Pachira aquatica saplings. We find that acetogenic compounds primarily incorporated carbon from 13 C2-pyruvate, whereas isoprenoids incorporated 13 C1- and 13 C2-pyruvate equally. This indicates that cytosolic pyruvate is primarily introduced into plastidial isoprenoids via glyceraldehyde 3-phosphate and that plastidial isoprenoid intermediates are incorporated into cytosolic isoprenoids. Probably as a result of the large differences in hydrogen isotope fractionation between plastidial and cytosolic isoprenoid pathways, sterols from P. aquatica are at least 50‰ less 2 H-enriched relative to phytol than sterols in other plants. These results provide the first experimental evidence that incorporation of plastidial intermediates reduces 2 H : 1 H ratios of sterols. This suggests that relative offsets between the 2 H : 1 H ratios of sterols and phytol can trace exchange between the two isoprenoid synthesis pathways.
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Affiliation(s)
- S Nemiah Ladd
- Chair of Ecosystem Physiology, Albert Ludwig University of Freiburg, Georges-Köhler-Allee 053/054, Freiburg, 79110, Germany
| | - Daniel B Nelson
- Plant Physiological Ecology, Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, Basel, 4056, Switzerland
| | - Ines Bamberger
- Chair of Ecosystem Physiology, Albert Ludwig University of Freiburg, Georges-Köhler-Allee 053/054, Freiburg, 79110, Germany
| | - L Erik Daber
- Chair of Ecosystem Physiology, Albert Ludwig University of Freiburg, Georges-Köhler-Allee 053/054, Freiburg, 79110, Germany
| | - Jürgen Kreuzwieser
- Chair of Ecosystem Physiology, Albert Ludwig University of Freiburg, Georges-Köhler-Allee 053/054, Freiburg, 79110, Germany
| | - Ansgar Kahmen
- Plant Physiological Ecology, Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, Basel, 4056, Switzerland
| | - Christiane Werner
- Chair of Ecosystem Physiology, Albert Ludwig University of Freiburg, Georges-Köhler-Allee 053/054, Freiburg, 79110, Germany
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13
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Majchrzak T, Wojnowski W, Wasik A. Revealing dynamic changes of the volatile profile of food samples using PTR-MS. Food Chem 2021; 364:130404. [PMID: 34175628 DOI: 10.1016/j.foodchem.2021.130404] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 10/21/2022]
Abstract
Volatile compounds carry valuable information regarding the properties of foodstuffs. Volatiles emitted from food can be used as, for example, indicators of quality, shelf-life, or authenticity. A better understanding of the multitude of transformations which occur during food processing could facilitate the optimisation of production, increase the desirability of food products, and also their wholesomeness. However, as some of these transformations are fast-paced, it is necessary to monitor them using techniques which enable real-time determination of volatiles, such as proton transfer reaction-mass spectrometry (PTR-MS). Recent years have seen a marked increase in its use in food analysis, since it can be used to obtain insight into the dynamics of the monitored processes and can be the basis for precise quality control methods for food processing. This review highlights recent works in which PTR-MS was used in monitoring during foodstuffs production, preparation and storage.
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Affiliation(s)
- Tomasz Majchrzak
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland.
| | - Wojciech Wojnowski
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Andrzej Wasik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
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14
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Du B, Ma Y, Yáñez-Serrano AM, Arab L, Fasbender L, Alfarraj S, Albasher G, Hedrich R, White PJ, Werner C, Rennenberg H. Physiological responses of date palm (Phoenix dactylifera) seedlings to seawater and flooding. THE NEW PHYTOLOGIST 2021; 229:3318-3329. [PMID: 33259640 DOI: 10.1111/nph.17123] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/22/2020] [Indexed: 06/12/2023]
Abstract
In their natural environment along coast lines, date palms are exposed to seawater inundation and, hence, combined stress by salinity and flooding. To elucidate the consequences of this combined stress on foliar gas exchange and metabolite abundances in leaves and roots, date palm seedlings were exposed to flooding with seawater and its major constituents under controlled conditions. Seawater flooding significantly reduced CO2 assimilation, transpiration and stomatal conductance, but did not affect isoprene emission. A similar effect was observed upon NaCl exposure. By contrast, flooding with distilled water or MgSO4 did not affect CO2 /H2 O gas exchange or stomatal conductance significantly, indicating that neither flooding itself, nor seawater sulfate, contributed greatly to stomatal closure. Seawater exposure increased Na and Cl contents in leaves and roots, but did not affect sulfate contents significantly. Metabolite analyses revealed reduced abundances of foliar compatible solutes, such as sugars and sugar alcohols, whereas nitrogen compounds accumulated in roots. Reduced transpiration upon seawater exposure may contribute to controlling the movement of toxic ions to leaves and, therefore, can be seen as a mechanism to cope with salinity. The present results indicate that date palm seedlings are tolerant towards seawater exposure to some extent, and highly tolerant to flooding.
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Affiliation(s)
- Baoguo Du
- College of Life Science and Biotechnology, Mianyang Normal University, Mianxing Road West 166, Mianyang, 621000, China
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 53, Freiburg, 79110, Germany
| | - Yuhua Ma
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Ningda Road 251, Xining, 810016, China
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 53, Freiburg, 79110, Germany
| | - Ana Maria Yáñez-Serrano
- Ecosystem Physiology, University of Freiburg, Georges-Köhler-Allee 53/54, Freiburg, 79110, Germany
| | - Leila Arab
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 53, Freiburg, 79110, Germany
| | - Lukas Fasbender
- Ecosystem Physiology, University of Freiburg, Georges-Köhler-Allee 53/54, Freiburg, 79110, Germany
| | - Saleh Alfarraj
- King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Gadah Albasher
- King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, Biocenter, University of Würzburg, Würzburg, 97082, Germany
| | - Philip J White
- King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
- The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - Christiane Werner
- Ecosystem Physiology, University of Freiburg, Georges-Köhler-Allee 53/54, Freiburg, 79110, Germany
| | - Heinz Rennenberg
- Chair of Tree Physiology, Institute of Forest Sciences, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 53, Freiburg, 79110, Germany
- King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
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15
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Dewhirst RA, Lei J, Afseth CA, Castanha C, Wistrom CM, Mortimer JC, Jardine KJ. Are Methanol-Derived Foliar Methyl Acetate Emissions a Tracer of Acetate-Mediated Drought Survival in Plants? PLANTS (BASEL, SWITZERLAND) 2021; 10:411. [PMID: 33672332 PMCID: PMC7927132 DOI: 10.3390/plants10020411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 12/04/2022]
Abstract
Upregulation of acetate fermentation in plants has recently been described as an evolutionarily conserved drought survival strategy, with the amount of acetate produced directly correlating to survival. However, destructive measurements are required to evaluate acetate-linked drought responses, limiting the temporal and spatial scales that can be studied. Here, 13C-labeling studies with poplar (Populus trichocarpa) branches confirmed that methyl acetate is produced in plants from the acetate-linked acetylation of methanol. Methyl acetate emissions from detached leaves were strongly stimulated during desiccation, with total emissions decreasing with the leaf developmental stage. In addition, diurnal methyl acetate emissions from whole physiologically active poplar branches increased as a function of temperature, and light-dark transitions resulted in significant emission bursts lasting several hours. During experimental drought treatments of potted poplar saplings, light-dark methyl acetate emission bursts were eliminated while strong enhancements in methyl acetate emissions lasting > 6 days were observed with their initiation coinciding with the suppression of transpiration and photosynthesis. The results suggest that methyl acetate emissions represent a novel non-invasive tracer of acetate-mediated temperature and drought survival response in plants. The findings may have important implications for the future understanding of acetate-mediated drought responses to transcription, cellular metabolism, and hormone signaling, as well as its associated changes in carbon cycling and water use from individual plants to whole ecosystems.
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Affiliation(s)
- Rebecca A. Dewhirst
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (J.L.); (C.A.A.); (C.C.); (K.J.J.)
| | - Joseph Lei
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (J.L.); (C.A.A.); (C.C.); (K.J.J.)
| | - Cassandra A. Afseth
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (J.L.); (C.A.A.); (C.C.); (K.J.J.)
- School of Integrative Biology, University of Illinois at Urbana-Champaign, Champaign, IL 61801, USA
| | - Cristina Castanha
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (J.L.); (C.A.A.); (C.C.); (K.J.J.)
| | - Christina M. Wistrom
- College of Natural Resources, University of California, Berkeley, CA 94704, USA;
| | - Jenny C. Mortimer
- Environmental Genomics and Systems Biology, Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA;
- School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Glen Osmond, SA 5005, Australia
| | - Kolby J. Jardine
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; (J.L.); (C.A.A.); (C.C.); (K.J.J.)
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16
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Dani KGS, Torzillo G, Michelozzi M, Baraldi R, Loreto F. Isoprene Emission in Darkness by a Facultative Heterotrophic Green Alga. FRONTIERS IN PLANT SCIENCE 2020; 11:598786. [PMID: 33262779 PMCID: PMC7686029 DOI: 10.3389/fpls.2020.598786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/15/2020] [Indexed: 06/02/2023]
Abstract
Isoprene is a highly reactive biogenic volatile hydrocarbon that strongly influences atmospheric oxidation chemistry and secondary organic aerosol budget. Many phytoplanktons emit isoprene like terrestrial pants. Planktonic isoprene emission is stimulated by light and heat and is seemingly dependent on photosynthesis, as in higher plants. However, prominent isoprene-emitting phytoplanktons are known to survive also as mixotrophs and heterotrophs. Chlorella vulgaris strain G-120, a unicellular green alga capable of both photoautotrophic and heterotrophic growth, was examined for isoprene emission using GC-MS and real-time PTR-MS in light (+CO2) and in darkness (+glucose). Chlorella emitted isoprene at the same rate both as a photoautotroph under light, and as an exclusive heterotroph while feeding on exogenous glucose in complete darkness. By implication, isoprene synthesis in eukaryotic phytoplankton can be fully supported by glycolytic pathways in absence of photosynthesis, which is not the case in higher plants. Isoprene emission by chlorophyll-depleted mixotrophs and heterotrophs in darkness serves unknown functions and may contribute to anomalies in oceanic isoprene estimates.
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Affiliation(s)
- K. G. Srikanta Dani
- Institute for Sustainable Plant Protection, National Research Council of Italy, Florence, Italy
- Department of Biology, Agriculture and Food Sciences, National Research Council of Italy, Rome, Italy
| | - Giuseppe Torzillo
- Institute of Bioeconomy, National Research Council of Italy, Florence, Italy
| | - Marco Michelozzi
- Institute for Biosciences and Bioresources, National Research Council of Italy, Florence, Italy
| | - Rita Baraldi
- Institute of Bioeconomy, National Research Council of Italy, Bologna, Italy
| | - Francesco Loreto
- Department of Biology, Agriculture and Food Sciences, National Research Council of Italy, Rome, Italy
- Department of Biology, University Federico II, Naples, Italy
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17
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Yáñez-Serrano AM, Bourtsoukidis E, Alves EG, Bauwens M, Stavrakou T, Llusià J, Filella I, Guenther A, Williams J, Artaxo P, Sindelarova K, Doubalova J, Kesselmeier J, Peñuelas J. Amazonian biogenic volatile organic compounds under global change. GLOBAL CHANGE BIOLOGY 2020; 26:4722-4751. [PMID: 32445424 DOI: 10.1111/gcb.15185] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/11/2020] [Indexed: 06/11/2023]
Abstract
Biogenic volatile organic compounds (BVOCs) play important roles at cellular, foliar, ecosystem and atmospheric levels. The Amazonian rainforest represents one of the major global sources of BVOCs, so its study is essential for understanding BVOC dynamics. It also provides insights into the role of such large and biodiverse forest ecosystem in regional and global atmospheric chemistry and climate. We review the current information on Amazonian BVOCs and identify future research priorities exploring biogenic emissions and drivers, ecological interactions, atmospheric impacts, depositional processes and modifications to BVOC dynamics due to changes in climate and land cover. A feedback loop between Amazonian BVOCs and the trends of climate and land-use changes in Amazonia is then constructed. Satellite observations and model simulation time series demonstrate the validity of the proposed loop showing a combined effect of climate change and deforestation on BVOC emission in Amazonia. A decreasing trend of isoprene during the wet season, most likely due to forest biomass loss, and an increasing trend of the sesquiterpene to isoprene ratio during the dry season suggest increasing temperature stress-induced emissions due to climate change.
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Affiliation(s)
- Ana M Yáñez-Serrano
- CREAF, Cerdanyola del Vallès, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Spain
| | - Efstratios Bourtsoukidis
- Atmospheric Chemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, Mainz, Germany
| | - Eliane G Alves
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Maite Bauwens
- Royal Belgian Institute for Space Aeronomy, Brussels, Belgium
| | | | - Joan Llusià
- CREAF, Cerdanyola del Vallès, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Spain
| | - Iolanda Filella
- CREAF, Cerdanyola del Vallès, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Spain
| | - Alex Guenther
- Department of Earth System Science, University of California, Irvine, CA, USA
| | - Jonathan Williams
- Atmospheric Chemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, Mainz, Germany
| | - Paulo Artaxo
- Instituto de Física, Universidade de Sao Paulo, São Paulo, Brazil
| | - Katerina Sindelarova
- Faculty of Mathematics and Physics, Department of Atmospheric Physics, Charles University, Prague, Czechia
| | - Jana Doubalova
- Faculty of Mathematics and Physics, Department of Atmospheric Physics, Charles University, Prague, Czechia
- Modelling and Assessment Department, Czech Hydrometeorological Institute, Prague, Czechia
| | - Jürgen Kesselmeier
- Atmospheric Chemistry and Multiphase Chemistry Departments, Max Planck Institute for Chemistry, Mainz, Germany
| | - Josep Peñuelas
- CREAF, Cerdanyola del Vallès, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Spain
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18
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Comparative transcriptome analysis to identify putative genes related to trichome development in Ocimum species. Mol Biol Rep 2020; 47:6587-6598. [PMID: 32860161 DOI: 10.1007/s11033-020-05710-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 08/02/2020] [Indexed: 10/23/2022]
Abstract
Genus Ocimum is known to have species possessing important therapeutic essential oil. The major phytoconstituents of essential oil in Ocimum species are phenylpropanoids and terpenoids. The essential oil is accumulated in the trichomes; the specialized structures predominantly found on leaves and other tissues. The development of trichome is integrated with development of plant and leaf and also tightly coordinated with the primary and secondary metabolic pathways producing essential oil constituents. In continuation to our studies on elucidating/understanding the mechanism of biosynthesis of essential oil pathways in Ocimum species, we have performed comparative transcriptome analysis to investigate the role of trichome-related gene expression in the regulation of biosynthetic pathways of essential oil. The essential oil biogenesis is tightly integrated with primary metabolic activities, the analysis for the expression pattern of genes related to primary metabolism and its relationship with secondary metabolism was evaluated in comparative manner. Physiological parameters in relation to primary metabolism such as photosynthetic pigment content, soluble sugar content, and invertase enzymes along with morphological parameters were analysed in O. basilicum and O. sanctum. Differential expression profiling uncovered about 8116 and 2810 differentially expressed transcripts in O. basilicum and O. sanctum, respectively. Enrichment of differentially expressed genes were analysed in relation to metabolic pathways, primary metabolism and secondary metabolism. Trichome related genes identified from the Ocimum species vis-à-vis their expression profiles suggested higher expression in O. basilicum. The findings in this study provide interesting insights into the role of trichome-related transcripts in relation to essential oil content in Ocimum species. The study is valuable as this is the first study on revealing the transcripts and their role in trichome development and essential oil biogenesis in two major species of Ocimum.
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19
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Majchrzak T, Wojnowski W, Rutkowska M, Wasik A. Real-Time Volatilomics: A Novel Approach for Analyzing Biological Samples. TRENDS IN PLANT SCIENCE 2020; 25:302-312. [PMID: 31948793 DOI: 10.1016/j.tplants.2019.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 11/21/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
The use of the 'omics techniques in environmental research has become common-place. The most widely implemented of these include metabolomics, proteomics, genomics, and transcriptomics. In recent years, a similar approach has also been taken with the analysis of volatiles from biological samples, giving rise to the so-called 'volatilomics' in plant analysis. Developments in direct infusion mass spectrometry (DI-MS) techniques have made it possible to monitor the changes in the composition of volatile flux from parts of plants, single specimens, and entire ecosystems in real-time. The application of these techniques enables a unique insight into the dynamic metabolic processes that occur in plants. Here, we provide an overview of the use of DI-MS in real-time volatilomics research involving plants.
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Affiliation(s)
- Tomasz Majchrzak
- Gdańsk University of Technology, Faculty of Chemistry, Department of Analytical Chemistry, 80-233, Gdańsk, Poland
| | - Wojciech Wojnowski
- Gdańsk University of Technology, Faculty of Chemistry, Department of Analytical Chemistry, 80-233, Gdańsk, Poland
| | - Małgorzata Rutkowska
- Gdańsk University of Technology, Faculty of Chemistry, Department of Analytical Chemistry, 80-233, Gdańsk, Poland
| | - Andrzej Wasik
- Gdańsk University of Technology, Faculty of Chemistry, Department of Analytical Chemistry, 80-233, Gdańsk, Poland.
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20
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Werner C, Fasbender L, Romek KM, Yáñez-Serrano AM, Kreuzwieser J. Heat Waves Change Plant Carbon Allocation Among Primary and Secondary Metabolism Altering CO 2 Assimilation, Respiration, and VOC Emissions. FRONTIERS IN PLANT SCIENCE 2020; 11:1242. [PMID: 32922421 PMCID: PMC7456945 DOI: 10.3389/fpls.2020.01242] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 07/29/2020] [Indexed: 05/17/2023]
Abstract
Processes controlling plant carbon allocation among primary and secondary metabolism, i.e., carbon assimilation, respiration, and VOC synthesis are still poorly constrained, particularly regarding their response to stress. To investigate these processes, we simulated a 10-day 38°C heat wave, analysing real-time carbon allocation into primary and secondary metabolism in the Mediterranean shrub Halimium halimifolium L. We traced position-specific 13C-labeled pyruvate into daytime VOC and CO2 emissions and during light-dark transition. Net CO2 assimilation strongly declined under heat, due to three-fold higher respiration rates. Interestingly, day respiration also increased two-fold. Decarboxylation of the C1-atom of pyruvate was the main process driving daytime CO2 release, whereas the C2-moiety was not decarboxylated in the TCA cycle. Heat induced high emissions of methanol, methyl acetate, acetaldehyde as well as mono- and sesquiterpenes, particularly during the first two days. After 10-days of heat a substantial proportion of 13C-labeled pyruvate was allocated into de novo synthesis of VOCs. Thus, during extreme heat waves high respiratory losses and reduced assimilation can shift plants into a negative carbon balance. Still, plants enhanced their investment into de novo VOC synthesis despite associated metabolic CO2 losses. We conclude that heat stress re-directed the proportional flux of key metabolites into pathways of VOC biosynthesis most likely at the expense of reactions of plant primary metabolism, which might highlight their importance for stress protection.
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Affiliation(s)
- Christiane Werner
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
- *Correspondence: Christiane Werner,
| | - Lukas Fasbender
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | | | - Ana Maria Yáñez-Serrano
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
- Center of Ecological Research and Forest Applications (CREAF), Universitat Autònoma de Barcelona, Barcelona, Spain
- Global Ecology Unit CREAF-CSIC-UAB, Cerdanyola del Vallès, Barcelona, Spain
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21
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Yáñez-Serrano AM, Mahlau L, Fasbender L, Byron J, Williams J, Kreuzwieser J, Werner C. Heat stress increases the use of cytosolic pyruvate for isoprene biosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5827-5838. [PMID: 31396620 PMCID: PMC6812709 DOI: 10.1093/jxb/erz353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 07/18/2019] [Indexed: 05/28/2023]
Abstract
The increasing occurrence of heatwaves has intensified temperature stress on terrestrial vegetation. Here, we investigate how two contrasting isoprene-emitting tropical species, Ficus benjamina and Pachira aquatica, cope with heat stress and assess the role of internal plant carbon sources for isoprene biosynthesis in relation to thermotolerance. To our knowledge, this is the first study to report isoprene emissions from P. aquatica. We exposed plants to two levels of heat stress and determined the temperature response curves for isoprene and photosynthesis. To assess the use of internal C sources in isoprene biosynthesis, plants were fed with 13C position-labelled pyruvate. F. benjamina was more heat tolerant with higher constitutive isoprene emissions and stronger acclimation to higher temperatures than P. aquatica, which showed higher induced isoprene emissions at elevated temperatures. Under heat stress, both isoprene emissions and the proportion of cytosolic pyruvate allocated into isoprene synthesis increased. This represents a mechanism that P. aquatica, and to a lesser extent F. benjamina, has adopted as an immediate response to sudden increase in heat stress. However, in the long run under prolonged heat, the species with constitutive emissions (F. benjamina) was better adapted, indicating that plants that invest more carbon into protective emissions of biogenic volatile organic compounds tend to suffer less from heat stress.
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Affiliation(s)
| | - Lucas Mahlau
- Institute of Ecosystem Physiology, University Freiburg, Freiburg, Germany
| | - Lukas Fasbender
- Institute of Ecosystem Physiology, University Freiburg, Freiburg, Germany
| | - Joseph Byron
- Atmospheric Chemistry Department, Max-Planck Institute for Chemistry, Mainz, Germany
| | - Jonathan Williams
- Atmospheric Chemistry Department, Max-Planck Institute for Chemistry, Mainz, Germany
| | - Jürgen Kreuzwieser
- Institute of Ecosystem Physiology, University Freiburg, Freiburg, Germany
| | - Christiane Werner
- Institute of Ecosystem Physiology, University Freiburg, Freiburg, Germany
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22
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Guidolotti G, Pallozzi E, Gavrichkova O, Scartazza A, Mattioni M, Loreto F, Calfapietra C. Emission of constitutive isoprene, induced monoterpenes, and other volatiles under high temperatures in Eucalyptus camaldulensis: A 13 C labelling study. PLANT, CELL & ENVIRONMENT 2019; 42:1929-1938. [PMID: 30663094 DOI: 10.1111/pce.13521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 06/09/2023]
Abstract
Eucalypts are major emitters of biogenic volatile organic compounds (BVOCs), especially volatile isoprenoids. Emissions and incorporation of 13 C in BVOCs were measured in Eucalyptus camaldulensis branches exposed to rapid heat stress or progressive temperature increases, in order to detect both metabolic processes and their dynamics. Isoprene emission increased and photosynthesis decreased with temperatures rising from 30°C to 45°C, and an increasing percentage of unlabelled carbon was incorporated into isoprene in heat-stressed leaves. Intramolecular labelling was also incomplete in isoprene emitted by heat-stressed leaves, suggesting increasing contribution of respiratory (and possibly also photorespiratory) carbon. At temperature above 45°C, a drop of isoprene emission was mirrored by the appearance of unlabelled monoterpenes, green leaf volatiles, methanol, and ethanol, indicating that the emission of stored volatiles was mainly induced by cellular damage. Emission of partially labelled acetaldehyde was also observed at very high temperatures, suggesting a double source of carbon, with a large unlabelled component likely transported from roots and associated to the surge of transpiration at very high temperatures. Eucalypt plantations cover large areas worldwide, and our findings may dramatically change forecast and modelling of future BVOC emissions at planetary level, especially considering climate warming and frequent heat waves.
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Affiliation(s)
- Gabriele Guidolotti
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Monterotondo Scalo, 01500, Italy
| | - Emanuele Pallozzi
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Monterotondo Scalo, 01500, Italy
| | - Olga Gavrichkova
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, 05010, Italy
- Department of Landscape Design and Sustainable Ecosystems, Agrarian-technological Institute, RUDN University, Moscow, 117198, Russia
| | - Andrea Scartazza
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Pisa, 56124, Italy
| | - Michele Mattioni
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, 05010, Italy
| | - Francesco Loreto
- Department of Biology, Agriculture and Food Sciences (DISBA), National Research Council of Italy (CNR), Rome, 00185, Italy
| | - Carlo Calfapietra
- Institute of Research on Terrestrial Ecosystems (IRET), National Research Council of Italy (CNR), Porano, 05010, Italy
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