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de Souza MA, de Andrade LIF, Gago J, Pereira EG. Photoprotective mechanisms and higher photorespiration are key points for iron stress tolerance under heatwaves in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 342:112031. [PMID: 38346562 DOI: 10.1016/j.plantsci.2024.112031] [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: 09/18/2023] [Revised: 12/28/2023] [Accepted: 02/09/2024] [Indexed: 02/22/2024]
Abstract
Considering the current climate change scenario, the development of heat-tolerant rice cultivars (Oryza sativa L.) is paramount for cultivation in waterlogged systems affected by iron (Fe) excess. The objective of this work was to investigate the physiological basis of tolerance to excess Fe in rice cultivars that would maintain photosynthetic efficiency at higher temperatures. In an experimental approach, two rice cultivars (IRGA424 - tolerant and IRGA417- susceptible to Fe toxicity) were exposed to two concentrations of FeSO4-EDTA, control (0.019 mM) and excess Fe (7 mM) and subsequent exposition to heatwaves at different temperatures (25 °C - control, 35, 40, 45, 50, and 55 °C). The increase in temperatures resulted in a higher Fe concentration in shoots accompanied by a lower Rubisco carboxylation rate in both cultivars, but with lower damage in the tolerant one. Stomatal limitation only occurred as a late response to Fe toxicity, especially in the sensitive cultivar. The activation of photorespiration as electron sink under Fe excess with increasing temperature during heatwaves appear as a major mechanism to alleviate oxidative stress in cultivars tolerant to excess Fe. The tolerance to iron toxicity and heat stress is associated with increased photoprotective mechanisms driving non-photochemical dissipation.
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Affiliation(s)
- Moises Alves de Souza
- Setor de Fisiologia Vegetal, Departamento de Biologia, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil.
| | | | - Jorge Gago
- Instituto de investigaciones Agroambientales y de la Economía del Agua (INAGEA), Universitat deles Illes Balears, Palma de Mallorca, Spain
| | - Eduardo Gusmão Pereira
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa, Rodovia LMG 818, km 06, Campus UFV-Florestal, Florestal, Minas Gerais, Brazil.
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Huang R, Zhang T, Ge X, Cao Y, Li Z, Zhou B. Emission Trade-Off between Isoprene and Other BVOC Components in Pinus massoniana Saplings May Be Regulated by Content of Chlorophylls, Starch and NSCs under Drought Stress. Int J Mol Sci 2023; 24:ijms24108946. [PMID: 37240289 DOI: 10.3390/ijms24108946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/22/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
The aim of this work was to study the changes in the BVOCs emission rates and physiological mechanistic response of Pinus massoniana saplings in response to drought stress. Drought stress significantly reduced the emission rates of total BVOCs, monoterpenes, and sesquiterpenes, but had no significant effect on the emission rate of isoprene, which slightly increased under drought stress. A significant negative relationship was observed between the emission rates of total BVOCs, monoterpenes, and sesquiterpenes and the content of chlorophylls, starch, and NSCs, and a positive relationship was observed between the isoprene emission rate and the content of chlorophylls, starch, and NSCs, indicating different control mechanism over the emission of the different components of BVOCs. Under drought stress, the emission trade-off between isoprene and other BVOCs components may be driven by the content of chlorophylls, starch, and NSCs. Considering the inconsistent responses of the different components of BVOCs to drought stress for different plant species, close attention should be paid to the effect of drought stress and global change on plant BVOCs emissions in the future.
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Affiliation(s)
- Runxia Huang
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
| | - Tianning Zhang
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
| | - Xiaogai Ge
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
| | - Yonghui Cao
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
| | - Zhengcai Li
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
| | - Benzhi Zhou
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
- Qianjiangyuan Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Hangzhou 311400, China
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Dani KGS, Pollastri S, Pinosio S, Reichelt M, Sharkey TD, Schnitzler J, Loreto F. Isoprene enhances leaf cytokinin metabolism and induces early senescence. THE NEW PHYTOLOGIST 2022; 234:961-974. [PMID: 34716577 PMCID: PMC9300082 DOI: 10.1111/nph.17833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/22/2021] [Indexed: 06/02/2023]
Abstract
Isoprene, a major biogenic volatile hydrocarbon of climate-relevance, indisputably mitigates abiotic stresses in emitting plants. However functional relevance of constitutive isoprene emission in unstressed plants remains contested. Isoprene and cytokinins (CKs) are synthesized from a common substrate and pathway in chloroplasts. It was postulated that isoprene emission may affect CK-metabolism. Using transgenic isoprene-emitting (IE) Arabidopsis and isoprene nonemitting (NE) RNA-interference grey poplars (paired with respective NE and IE genotypes), the life of individual IE and NE leaves from emergence to abscission was followed under stress-free conditions. We monitored plant growth rate, aboveground developmental phenotype, modelled leaf photosynthetic energy status, quantified the abundance of leaf CKs, analysed Arabidopsis and poplar leaf transcriptomes by RNA-sequencing in presence and absence of isoprene during leaf senescence. Isoprene emission by unstressed leaves enhanced the abundance of CKs (isopentenyl adenine and its precursor) by > 200%, significantly upregulated genes coding for CK-synthesis, CK-signalling and CK-degradation, hastened plant development, increased chloroplast metabolic rate, altered photosynthetic energy status, induced early leaf senescence in both Arabidopsis and poplar. IE leaves senesced sooner even in decapitated poplars where source-sink relationships and hormone homeostasis were perturbed. Constitutive isoprene emission significantly accelerates CK-led leaf and organismal development and induces early senescence independent of growth constraints. Isoprene emission provides an early-riser evolutionary advantage and shortens lifecycle duration to assist rapid diversification in unstressed emitters.
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Affiliation(s)
- Kaidala Ganesha Srikanta Dani
- Institute for Sustainable Plant ProtectionNational Research Council of ItalyVia Madonna del Piano 1050019Sesto FiorentinoFlorenceItaly
- Department of Biology, Agriculture and Food SciencesNational Research Council of ItalyPiazzale Aldo Moro 700185RomeItaly
| | - Susanna Pollastri
- Institute for Sustainable Plant ProtectionNational Research Council of ItalyVia Madonna del Piano 1050019Sesto FiorentinoFlorenceItaly
| | - Sara Pinosio
- Institute of Biosciences and BioresourcesNational Research Council of ItalyVia Madonna del Piano 1050019Sesto FiorentinoFlorenceItaly
- Institute for Applied GenomicsVia Jacopo Linussio 5133100UdineItaly
| | - Michael Reichelt
- Department of BiochemistryMax Planck Institute for Chemical EcologyHans‐Knöll Strasse 8D‐07745JenaGermany
| | - Thomas D. Sharkey
- MSU‐DOE Plant Research LaboratoryDepartment of Biochemistry and Molecular BiologyMichigan State UniversityEast LansingMI48824USA
| | - Jörg‐Peter Schnitzler
- Research Unit Environmental SimulationInstitute of Biochemical Plant PathologyHelmholtz Zentrum MünchenGerman Research Center for Environmental Health85764NeuherbergGermany
| | - Francesco Loreto
- Department of Biology, Agriculture and Food SciencesNational Research Council of ItalyPiazzale Aldo Moro 700185RomeItaly
- Department of BiologyUniversity of Naples Federico IIVia Cinthia80126NaplesItaly
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Brilli F, Dani KGS, Pasqualini S, Costarelli A, Cannavò S, Paolocci F, Zittelli GC, Mugnai G, Baraldi R, Loreto F. Exposure to different light intensities affects emission of volatiles and accumulations of both pigments and phenolics in Azolla filiculoides. PHYSIOLOGIA PLANTARUM 2022; 174:e13619. [PMID: 34988977 PMCID: PMC9305523 DOI: 10.1111/ppl.13619] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 12/03/2021] [Indexed: 06/01/2023]
Abstract
Many agronomic trials demonstrated the nitrogen-fixing ability of the ferns Azolla spp. and its obligate cyanobiont Trichormus azollae. In this study, we have screened the emission of volatile organic compounds (VOCs) and analyzed pigments (chlorophylls, carotenoids) as well as phenolic compounds in Azolla filiculoides-T. azollae symbionts exposed to different light intensities. Our results revealed VOC emission mainly comprising isoprene and methanol (~82% and ~13% of the overall blend, respectively). In particular, by dissecting VOC emission from A. filiculoides and T. azollae, we found that the cyanobacterium does not emit isoprene, whereas it relevantly contributes to the methanol flux. Enhanced isoprene emission capacity (15.95 ± 2.95 nmol m-2 s-1 ), along with increased content of both phenolic compounds and carotenoids, was measured in A. filiculoides grown for long-term under high (700 μmol m-2 s-1 ) rather than medium (400 μmol m-2 s-1 ) and low (100 μmol m-2 s-1 ) light intensity. Moreover, light-responses of chlorophyll fluorescence demonstrated that A. filiculoides was able to acclimate to high growth light. However, exposure of A. filiculoides from low (100 μmol m-2 s-1 ) to very high light (1000 μmol m-2 s-1 ) did not affect, in the short term, photosynthesis, but slightly decreased isoprene emission and leaf pigment content whereas, at the same time, dramatically raised the accumulation of phenolic compounds (i.e. deoxyanthocyanidins and phlobaphenes). Our results highlight a coordinated photoprotection mechanism consisting of isoprene emission and phenolic compounds accumulation employed by A. filiculoides to cope with increasing light intensities.
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Affiliation(s)
- Federico Brilli
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - K. G. Srikanta Dani
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - Stefania Pasqualini
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Alma Costarelli
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Sara Cannavò
- Department of Chemistry, Biology and BiotechnologyUniversity of PerugiaPerugiaItaly
| | - Francesco Paolocci
- Institute of Biosciences and BioResources (IBBR)National Research Council of Italy (CNR)PerugiaItaly
| | | | - Gianmarco Mugnai
- Institute of BioEconomy (IBE)National Research Council of Italy (CNR)Sesto FiorentinoItaly
| | - Rita Baraldi
- Institute of BioEconomy (IBE)National Research Council of Italy (CNR)BolognaItaly
| | - Francesco Loreto
- Institute for Sustainable Plant Protection (IPSP)National Research Council of Italy (CNR)Sesto FiorentinoItaly
- Department of BiologyThe University of Naples Federico IINaplesItaly
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5
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Du W, Ruan C, Li J, Li H, Ding J, Zhao S, Jiang X. Quantitative proteomic analysis of Xanthoceras sorbifolium Bunge seedlings in response to drought and heat stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 160:8-17. [PMID: 33445043 DOI: 10.1016/j.plaphy.2021.01.002] [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: 10/13/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Yellowhorn (Xanthoceras sorbifolium Bunge) is a woody oil species that is widely distributed in northwestern China. To investigate the molecular mechanisms underlying the drought and heat tolerance response of yellowhorn seedlings, changes in protein abundance were analyzed via comparative proteomics. Drought and heat treatment of seedlings was applied in growth chamber, and the leaves were harvested after 7 days of treatment. The total protein was extracted, and comparative proteomic analysis was performed via isobaric tag for relative and absolute quantitation (iTRAQ). The abundance of most of the proteins associated with oxidative phosphorylation, NADH dehydrogenase and superoxide dismutase (SOD) was reduced. The differential proteins associated with photosynthesis enzymes indicated that stress had different effects on photosystem I (PSI) and photosystem II (PSII). After comprehensively analyzing the results, we speculated that drought and heat stress could hinder the synthesis of riboflavin, reducing NADH dehydrogenase content, which might further have an impact on energy utilization. Yellowhorn seedlings relied on Fe-Mn SOD enzymes rather than Cu/Zn SOD enzymes to remove reactive oxygen species (ROS). In addition, heat-shock proteins (HSPs) had significant increase and played a key role in stress response, which could be divided into two categories according to their transcription and translation efficiency. Over all, the results can provide a basis for understanding the molecular mechanism underlying resistance to drought and heat stress in yellowhorn and for subsequent research of posttranslational modification-related omics of key proteins.
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Affiliation(s)
- Wei Du
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
| | - Chengjiang Ruan
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China.
| | - Jingbin Li
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
| | - He Li
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
| | - Jian Ding
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
| | - Siyang Zhao
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
| | - Xin Jiang
- Institute of Plant Resources, Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Nationalities University, Dalian, 116600, China
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6
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Sun Z, Shen Y, Niinemets Ü. Responses of isoprene emission and photochemical efficiency to severe drought combined with prolonged hot weather in hybrid Populus. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:7364-7381. [PMID: 32996573 PMCID: PMC7906789 DOI: 10.1093/jxb/eraa415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
Isoprene emissions have been considered as a protective response of plants to heat stress, but there is limited information of how prolonged heat spells affect isoprene emission capacity, particularly under the drought conditions that often accompany hot weather. Under combined long-term stresses, presence of isoprene emission could contribute to the maintenance of the precursor pool for rapid synthesis of essential isoprenoids to repair damaged components of leaf photosynthetic apparatus. We studied changes in leaf isoprene emission rate, photosynthetic characteristics, and antioxidant enzyme activities in two hybrid Populus clones, Nanlin 1388 (relatively high drought tolerance) and Nanlin 895 (relatively high thermotolerance) that were subjected to long-term (30 d) soil water stress (25% versus 90% soil field capacity) combined with a natural heat spell (day-time temperatures of 35-40 °C) that affected both control and water-stressed plants. Unexpectedly, isoprene emissions from both the clones were similar and the overall effects of drought on the emission characteristics were initially minor; however, treatment effects and clonal differences increased with time. In particular, the isoprene emission rate only increased slightly in the Nanlin 895 control plants after 15 d of treatment, whereas it decreased by more than 5-fold in all treatment × clone combinations after 30 d. The reduction in isoprene emission rate was associated with a decrease in the pool size of the isoprene precursor dimethylallyl diphosphate in all cases at 30 d after the start of treatment. Net assimilation rate, stomatal conductance, the openness of PSII centers, and the effective quantum yield all decreased, and non-photochemical quenching and catalase activity increased in both control and water-stressed plants. Contrary to the hypothesis of protection of leaf photosynthetic apparatus by isoprene, the data collectively indicated that prolonged stress affected isoprene emissions more strongly than leaf photosynthetic characteristics. This primarily reflected the depletion of isoprene precursor pools under long-term severe stress.
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Affiliation(s)
- Zhihong Sun
- School of Forestry and Bio-Technology, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Zhejiang A&F University State Key Laboratory of Subtropical Silviculture, Hangzhou, Zhejiang, China
| | - Yan Shen
- School of Forestry and Bio-Technology, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Ülo Niinemets
- School of Forestry and Bio-Technology, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi, Tartu, Estonia
- Estonian Academy of Sciences, Kohtu, Tallinn, Estonia
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7
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Ferguson JN, McAusland L, Smith KE, Price AH, Wilson ZA, Murchie EH. Rapid temperature responses of photosystem II efficiency forecast genotypic variation in rice vegetative heat tolerance. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:839-855. [PMID: 32777163 DOI: 10.1111/tpj.14956] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/22/2020] [Accepted: 07/22/2020] [Indexed: 05/24/2023]
Abstract
A key target for the improvement of Oryza sativa (rice) is the development of heat-tolerant varieties. This necessitates the development of high-throughput methodologies for the screening of heat tolerance. Progress has been made to this end via visual scoring and chlorophyll fluorescence; however, these approaches demand large infrastructural investments to expose large populations of adult plants to heat stress. To address this bottleneck, we investigated the response of the maximum quantum efficiency of photosystem II (PSII) to rapidly increasing temperatures in excised leaf segments of juvenile rice plants. Segmented models explained the majority of the observed variation in response. Coefficients from these models, i.e. critical temperature (Tcrit ) and the initial response (m1 ), were evaluated for their usability for forecasting adult heat tolerance, measured as the vegetative heat tolerance of adult rice plants through visual (stay-green) and chlorophyll fluorescence (ɸPSII) approaches. We detected substantial variation in heat tolerance of a randomly selected set of indica rice varieties. Both Tcrit and m1 were associated with measured heat tolerance in adult plants, highlighting their usability as high-throughput proxies. Variation in heat tolerance was associated with daytime respiration but not with photosynthetic capacity, highlighting a role for the non-photorespiratory release of CO2 in heat tolerance. To date, this represents the first published instance of genetic variation in these key gas-exchange traits being quantified in response to heat stress in a diverse set of rice accessions. These results outline an efficient strategy for screening heat tolerance and accentuate the need to focus on reduced rates of respiration to improve heat tolerance in rice.
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Affiliation(s)
- John N Ferguson
- Division of Plant and Crop Science, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
- Future Food Beacon of Excellence, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, UK
| | - Lorna McAusland
- Division of Plant and Crop Science, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Kellie E Smith
- Division of Plant and Crop Science, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Adam H Price
- School of Biological Sciences, University of Aberdeen, Aberdeen, AB24 3UU, UK
| | - Zoe A Wilson
- Division of Plant and Crop Science, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
| | - Erik H Murchie
- Division of Plant and Crop Science, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK
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de Souza VF, Niinemets Ü, Rasulov B, Vickers CE, Duvoisin Júnior S, Araújo WL, Gonçalves JFDC. Alternative Carbon Sources for Isoprene Emission. TRENDS IN PLANT SCIENCE 2018; 23:1081-1101. [PMID: 30472998 PMCID: PMC6354897 DOI: 10.1016/j.tplants.2018.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 09/03/2018] [Accepted: 09/25/2018] [Indexed: 05/07/2023]
Abstract
Isoprene and other plastidial isoprenoids are produced primarily from recently assimilated photosynthates via the 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway. However, when environmental conditions limit photosynthesis, a fraction of carbon for MEP pathway can come from extrachloroplastic sources. The flow of extrachloroplastic carbon depends on the species and on leaf developmental and environmental conditions. The exchange of common phosphorylated intermediates between the MEP pathway and other metabolic pathways can occur via plastidic phosphate translocators. C1 and C2 carbon intermediates can contribute to chloroplastic metabolism, including photosynthesis and isoprenoid synthesis. Integration of these metabolic processes provide an example of metabolic flexibility, and results in the synthesis of primary metabolites for plant growth and secondary metabolites for plant defense, allowing effective use of environmental resources under multiple stresses.
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Affiliation(s)
- Vinícius Fernandes de Souza
- Laboratory of Plant Physiology and Biochemistry, National Institute for Amazonian Research (INPA), Manaus, AM 69011-970, Brazil; University of Amazonas State, Manaus, AM 69050-010, Brazil
| | - Ülo Niinemets
- Department of Crop Science and Plant Biology, Estonian University of Life Sciences, Tartu 51006, Estonia; Estonian Academy of Sciences, 10130 Tallinn, Estonia
| | - Bahtijor Rasulov
- Department of Crop Science and Plant Biology, Estonian University of Life Sciences, Tartu 51006, Estonia; Institute of Technology, University of Tartu, Tartu, Estonia
| | - Claudia E Vickers
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, QLD 4072, Australia; Commonwealth Scientific and Industrial Research Organisation (CSIRO) Synthetic Biology Future Science Platform, EcoSciences Precinct, Brisbane, QLD 4001, Australia
| | | | - Wagner L Araújo
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900 Viçosa, MG, Brazil
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9
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A MODIS Photochemical Reflectance Index (PRI) as an Estimator of Isoprene Emissions in a Temperate Deciduous Forest. REMOTE SENSING 2018. [DOI: 10.3390/rs10040557] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Dani KGS, Loreto F. Trade-Off Between Dimethyl Sulfide and Isoprene Emissions from Marine Phytoplankton. TRENDS IN PLANT SCIENCE 2017; 22:361-372. [PMID: 28242195 DOI: 10.1016/j.tplants.2017.01.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 01/04/2017] [Accepted: 01/24/2017] [Indexed: 05/14/2023]
Abstract
Marine phytoplankton emit volatile organic compounds (VOCs) such as dimethyl sulfide (DMS) and isoprene that influence air quality, cloud dynamics, and planetary albedo. We show that globally (i) marine phytoplankton taxa tend to emit either DMS or isoprene, and (ii) sea-water surface concentration and emission hotspots of DMS and isoprene have opposite latitudinal gradients. We argue that a convergence of antioxidant functions between DMS and isoprene is possible, driven by potential metabolic competition for photosynthetic substrates. Linking phytoplankton emission traits to their latitudinal niches, we hypothesize that natural selection favors DMS emission in cold (polar) waters and isoprene emission in warm (tropical) oceans, and that global warming may expand the geographic range of marine isoprene-emitters. A trade-off between DMS and isoprene at metabolic, organismal, and geographic levels may have important consequences for future marine biosphere-atmosphere interactions.
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Affiliation(s)
- K G Srikanta Dani
- Istituto per lo Studio degli Ecosistemi, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, Sesto Fiorentino, 50019 Firenze, Italy; School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, 695016 Kerala, India.
| | - Francesco Loreto
- Dipartimento di Scienze Bio-Agroalimentari, Consiglio Nazionale delle Ricerche, Piazzale Aldo Moro 7, 00185 Roma, Italy.
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11
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Ahrar M, Doneva D, Tattini M, Brunetti C, Gori A, Rodeghiero M, Wohlfahrt G, Biasioli F, Varotto C, Loreto F, Velikova V. Phenotypic differences determine drought stress responses in ecotypes of Arundo donax adapted to different environments. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2439-2451. [PMID: 28449129 DOI: 10.1093/jxb/erx125] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Arundo donax has been identified as an important biomass and biofuel crop. Yet, there has been little research on photosynthetic and metabolic traits, which sustain the high productivity of A. donax under drought conditions. This study determined phenotypic differences between two A. donax ecotypes coming from stands with contrasting adaptation to dry climate. We hypothesized that the Bulgarian (BG) ecotype, adapted to drier conditions, exhibits greater drought tolerance than the Italian (IT) ecotype, adapted to a more mesic environment. Under well-watered conditions the BG ecotype was characterized by higher photosynthesis, mesophyll conductance, intrinsic water use efficiency, PSII efficiency, isoprene emission rate and carotenoids, whereas the IT ecotype showed higher levels of hydroxycinnamates. Photosynthesis of water-stressed plants was mainly limited by diffusional resistance to CO2 in BG, and by biochemistry in IT. Recovery of photosynthesis was more rapid and complete in BG than in IT, which may indicate better stability of the photosynthetic apparatus associated to enhanced induction of volatile and non-volatile isoprenoids and phenylpropanoid biosynthesis. This study shows that a large phenotypic plasticity among A. donax ecotypes exists, and may be exploited to compensate for the low genetic variability of this species when selecting plant productivity in constrained environments.
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Affiliation(s)
- Mastaneh Ahrar
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Trento, Italy
- Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Dilyana Doneva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Massimiliano Tattini
- The National Research Council of Italy (CNR), Institute for Sustainable Plant Protection, Sesto Fiorentino, Florence, Italy
| | - Cecilia Brunetti
- The National Research Council of Italy (CNR), Trees and Timber Institute, Sesto Fiorentino, Florence, Italy
- Department of Plant, Soil and Environmental Sciences, University of Florence, Florence, Italy
| | - Antonella Gori
- Department of Agri-Food Production and Environmental Sciences, University of Florence, Florence, Italy
| | - Mirco Rodeghiero
- Department of Sustainable Agro-Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Trento, Italy
| | - Georg Wohlfahrt
- Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Franco Biasioli
- Department of Food Quality and Nutrition, Volatile Compound Facility, Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Trento, Italy
| | - Claudio Varotto
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Trento, Italy
| | - Francesco Loreto
- The National Research Council of Italy (CNR), Department of Biology, Agriculture and Food Science, Rome, Italy
| | - Violeta Velikova
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Trento, Italy
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria
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12
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Srikanta Dani KG, Marino G, Taiti C, Mancuso S, Atwell BJ, Loreto F, Centritto M. De novo post-illumination monoterpene burst in Quercus ilex (holm oak). PLANTA 2017; 245:459-465. [PMID: 27990573 DOI: 10.1007/s00425-016-2636-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 12/04/2016] [Indexed: 06/06/2023]
Abstract
Explicit proof for de novo origin of a rare post-illumination monoterpene burst and its consistency under low O 2 , shows interaction of photorespiration, photosynthesis, and isoprenoid biosynthesis during light-dark transitions. Quercus ilex L (holm oak) constitutively emits foliar monoterpenes in an isoprene-like fashion via the methyl erythritol phosphate (MEP) pathway located in chloroplasts. Isoprene-emitting plants are known to exhibit post-illumination isoprene burst, a transient emission of isoprene in darkness. An analogous post-illumination monoterpene burst (PiMB) had remained elusive and is reported here for the first time in Q. ilex. Using 13CO2 labelling, we show that PiMB is made from freshly fixed carbon. PiMB is rare at ambient (20%) O2, absent at high (50%) O2, and becomes consistent in leaves exposed to low (2%) O2. PiMB is stronger and occurs earlier at higher temperatures. We also show that primary and secondary post-illumination CO 2 bursts (PiCO2B) are sensitive to O2 in Q. ilex. The primary photorespiratory PiCO2B is absent under both ambient and low O2, but is induced under high (>50%) O2, while the secondary PiCO2B (of unknown origin) is absent under ambient, but present at low and high O2. We propose that post-illumination recycling of photorespired CO2 competes with the MEP pathway for photosynthetic carbon and energy, making PiMB rare under ambient O2 and absent at high O2. PiMB becomes consistent when photorespiration is suppressed in Q. ilex.
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Affiliation(s)
- K G Srikanta Dani
- Institute of Ecosystem Studies, National Research Council of Italy, via Madonna del Piano 10, 50019, Sesto Fiorentino (FI), Italy.
- Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia.
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695016, India.
| | - Giovanni Marino
- Trees and Timber Institute, National Research Council of Italy, via Madonna del Piano 10, 50019, Sesto Fiorentino (FI), Italy
| | - Cosimo Taiti
- Department of Environmental Science and Agricultural Production, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy
| | - Stefano Mancuso
- Department of Environmental Science and Agricultural Production, University of Florence, Viale delle Idee 30, 50019, Sesto Fiorentino (FI), Italy
| | - Brian J Atwell
- Department of Biological Sciences, Macquarie University, North Ryde, Sydney, NSW 2109, Australia
| | - Francesco Loreto
- Department of Biology, Agriculture and Food Sciences, National Research Council of Italy, Piazzale Aldo Moro 7, 00185, Rome, Italy
| | - Mauro Centritto
- Trees and Timber Institute, National Research Council of Italy, via Madonna del Piano 10, 50019, Sesto Fiorentino (FI), Italy
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13
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Dani KGS, Fineschi S, Michelozzi M, Loreto F. Do cytokinins, volatile isoprenoids and carotenoids synergically delay leaf senescence? PLANT, CELL & ENVIRONMENT 2016; 39:1103-11. [PMID: 26729201 DOI: 10.1111/pce.12705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 12/06/2015] [Accepted: 12/16/2015] [Indexed: 05/09/2023]
Affiliation(s)
- Kaidala Ganesha Srikanta Dani
- Istituto per lo Studio degli Ecosistemi, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Firenze, Italy
- Istituto di Bioscienze e Biorisorse, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Firenze, Italy
- Department of Biological Sciences, Macquarie University, North Ryde, Sydney, 2109, New South Wales, Australia
| | - Silvia Fineschi
- Istituto per la Protezione Sostenibile delle Piante, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Firenze, Italy
| | - Marco Michelozzi
- Istituto di Bioscienze e Biorisorse, Consiglio Nazionale delle Ricerche, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Firenze, Italy
| | - Francesco Loreto
- Dipartimento di Scienze Bio-Agroalimentari, Consiglio Nazionale delle Ricerche, Piazzale Aldo Moro 7, 00185, Roma, Italy
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14
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Yuan H, Cheung CYM, Poolman MG, Hilbers PAJ, van Riel NAW. A genome-scale metabolic network reconstruction of tomato (Solanum lycopersicum L.) and its application to photorespiratory metabolism. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 85:289-304. [PMID: 26576489 DOI: 10.1111/tpj.13075] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 11/01/2015] [Accepted: 11/03/2015] [Indexed: 05/09/2023]
Abstract
Tomato (Solanum lycopersicum L.) has been studied extensively due to its high economic value in the market, and high content in health-promoting antioxidant compounds. Tomato is also considered as an excellent model organism for studying the development and metabolism of fleshy fruits. However, the growth, yield and fruit quality of tomatoes can be affected by drought stress, a common abiotic stress for tomato. To investigate the potential metabolic response of tomato plants to drought, we reconstructed iHY3410, a genome-scale metabolic model of tomato leaf, and used this metabolic network to simulate tomato leaf metabolism. The resulting model includes 3410 genes and 2143 biochemical and transport reactions distributed across five intracellular organelles including cytosol, plastid, mitochondrion, peroxisome and vacuole. The model successfully described the known metabolic behaviour of tomato leaf under heterotrophic and phototrophic conditions. The in silico investigation of the metabolic characteristics for photorespiration and other relevant metabolic processes under drought stress suggested that: (i) the flux distributions through the mevalonate (MVA) pathway under drought were distinct from that under normal conditions; and (ii) the changes in fluxes through core metabolic pathways with varying flux ratio of RubisCO carboxylase to oxygenase may contribute to the adaptive stress response of plants. In addition, we improved on previous studies of reaction essentiality analysis for leaf metabolism by including potential alternative routes for compensating reaction knockouts. Altogether, the genome-scale model provides a sound framework for investigating tomato metabolism and gives valuable insights into the functional consequences of abiotic stresses.
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Affiliation(s)
- Huili Yuan
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | | | - Mark G Poolman
- Cell Systems Modelling Group, Department of Biomedical and Medical Science, Oxford Brookes University, Oxford, UK
| | - Peter A J Hilbers
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Natal A W van Riel
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, The Netherlands
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15
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Nogués I, Muzzini V, Loreto F, Bustamante MA. Drought and soil amendment effects on monoterpene emission in rosemary plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 538:768-778. [PMID: 26335159 DOI: 10.1016/j.scitotenv.2015.08.080] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 08/14/2015] [Accepted: 08/14/2015] [Indexed: 06/05/2023]
Abstract
The aim of this work was to study the changes during 15days in the monoterpene emission rates of the Mediterranean shrub rosemary (Rosmarinus officinalis L.), in response to increasing drought stress and fertilisation using two different composts derived from livestock anaerobic digestates (cattle and pig slurry). Drought stress considerably reduced photosynthetic rates, stomatal conductance and isoprenoid emissions and also induced a change in blend composition. In the drought stressed rosemary plants, a positive relationship of non-oxygenated monoterpene emissions and a negative relationship of oxygenated monoterpene with photosynthesis were observed, indicating a different control mechanism over the emissions of the two types of isoprenoids. The emission of non-oxygenated monoterpenes seemed to depend more on photosynthesis and "de novo" synthesis, whereas emission of oxygenate monoterpenes was more dependent on volatilisation from storage, mainly driven by cumulative temperatures. In the short term, the addition of composted organic materials to the soil did not induce a significant effect on isoprenoid emission rates in the rosemary plants. However, the effect of the interaction between fertilisation and seasonality on isoprenoid emission rates was influenced by the amendment origin. Also, we emphasized changes in potential isoprenoid emission factors throughout the experiment, probably indicating changes in the leaf developmental stage.
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Affiliation(s)
- I Nogués
- Institute of Agro-Environmental and Forest Biology, National Research Council of Italy, Via Salaria km 29,300, 00015 Monterotondo Scalo, Rome, Italy.
| | - V Muzzini
- Institute of Agro-Environmental and Forest Biology, National Research Council of Italy, Via Salaria km 29,300, 00015 Monterotondo Scalo, Rome, Italy
| | - F Loreto
- National Research Council, Department of Biology, Agriculture and Food Sciences (DISBA-CNR), Piazzale Aldo Moro 7, 00185 Rome, Italy
| | - M A Bustamante
- Department of Agrochemistry and Environment, Miguel Hernandez University, EPS-Orihuela, ctra. Beniel km 3.2, 03312 Orihuela, Spain
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