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Neri A, Francini A, Giovannelli A, Traversari S, Sebastiani L. Differences in mineral and osmotic balances enhance zinc translocation in an aquaporin overexpressing poplar. Plant Physiol Biochem 2024; 208:108528. [PMID: 38493662 DOI: 10.1016/j.plaphy.2024.108528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/08/2024] [Accepted: 03/11/2024] [Indexed: 03/19/2024]
Abstract
Zinc (Zn) is an essential micronutrient for plants, but it is toxic beyond a certain threshold. Populus alba (L.) 'Villafranca' clone is known for its good tolerance to high Zn concentration compared to other poplar species. A line of this species overexpressing the tonoplast intrinsic aquaporin AQUA1 gene has showed an improved tolerance to Zn excess in comparison to the wild-type (wt) line. The aims of this work were to: 1) verify if AQUA1 plants can uptake Zn more efficiently after a longer period of exposure; 2) evaluate if a higher Zn uptake in transgenic lines can have negative effects; 3) assess Zn competing elements (iron and manganese), soluble sugars, osmolytes, and potassium to investigate differences in water and osmotic homeostasis between lines. Under Zn excess, AQUA1 plants showed a twofold Zn translocation factor and a higher xylem sap Zn concentration than the wt plants. Transgenic plants preferentially allocated Zn in aerial biomass and this different behaviour matched with modified manganese and iron balances suggesting that the increased Zn uptake might be related to a decrease in iron transport in the transgenic line. Moreover, a higher instantaneous water use efficiency in control conditions and an increase in bark soluble sugars under Zn excess could allow a higher resistance of AQUA1 plants to the water and osmotic perturbations caused by Zn. Indeed, the Zn excess increased the xylem osmolyte content only in wt plants. Further investigations are required to understand the role of AQUA1 in osmotic regulation.
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Affiliation(s)
- Andrea Neri
- Crop Science Research Center, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Alessandra Francini
- Crop Science Research Center, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Alessio Giovannelli
- Crop Science Research Center, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy; Research Institute on Terrestrial Ecosystems (IRET), National Research Council (CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino (FI), Italy
| | - Silvia Traversari
- Crop Science Research Center, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy; Research Institute on Terrestrial Ecosystems (IRET), National Research Council (CNR), Via Giuseppe Moruzzi 1, 56124, Pisa, Italy.
| | - Luca Sebastiani
- Crop Science Research Center, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
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Traversari S, Cardarelli M, Brambilla M, Cutini M, Burchi G, Fedrizzi M, Massa D, Orlandini A, Cacini S. Trichoderma atroviride Enhances Impatiens walleriana Hook. f Growth and Flowering in Different Growing Media. Plants (Basel) 2024; 13:583. [PMID: 38475430 DOI: 10.3390/plants13050583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/13/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024]
Abstract
Trichoderma spp. are widely reported to regulate plant growth by improving nutrient uptake, photosynthesis, and abiotic stress tolerance. However, their possible application for bedding plants is little explored, especially when comparing different growing media. Considering that coconut coir dust is finding broader application in the ornamental plants sector as a peat substitute, this work was aimed to test the combination of Trichoderma atroviride AT10 and coconut coir dust on Impatiens walleriana plants. Four treatments were tested as a mix of: (i) two growing media (70:30), peat:perlite or coconut coir dust:perlite; and (ii) the absence or presence of a T. atroviride treatment. At the end of the production cycle, the biomass and ornamental parameters, leaf pigments, nutrient content of the plant tissues, and Trichoderma abundance were assessed. The results revealed that T. atroviride can readily colonize coir, and the same positive effects of inoculum were found in plants grown on both substrates. The biostimulant effect of T. atroviride was observed as an increase in the aboveground biomass, number and weight of flowers, pigments and nutrient concentration, thereby improving the commercial quality of I. walleriana. Thus, T. atroviride has shown its potential in making bedding plant cultivation more sustainable and improving the yield and aesthetic parameters of plants grown on peat and coconut coir dust substrates.
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Affiliation(s)
- Silvia Traversari
- Research Institute on Terrestrial Ecosystems (IRET), National Research Council (CNR), Via Giuseppe Moruzzi 1, 56124 Pisa, Italy
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
| | - Mariateresa Cardarelli
- Department of Agriculture and Forest Sciences, University of Tuscia, Via S. Camillo De Lellis snc, 01100 Viterbo, Italy
| | - Massimo Brambilla
- Research Centre for Engineering and Agro-Food Processing, Council for Agricultural Research and Economics (CREA), Via Milano 43, 24027 Treviglio, Bergamo, Italy
| | - Maurizio Cutini
- Research Centre for Engineering and Agro-Food Processing, Council for Agricultural Research and Economics (CREA), Via Milano 43, 24027 Treviglio, Bergamo, Italy
| | - Gianluca Burchi
- Research Centre for Vegetables and Ornamental Crops, Council for Agricultural Research and Economics (CREA), Via dei Fiori 8, 51017 Pescia, Pistoia, Italy
| | - Marco Fedrizzi
- Research Centre for Engineering and Agro-Food Processing, Council for Agricultural Research and Economics (CREA), Via della Pascolare 16, 00015 Monterotondo Scalo, Rome, Italy
| | - Daniele Massa
- Research Centre for Vegetables and Ornamental Crops, Council for Agricultural Research and Economics (CREA), Via dei Fiori 8, 51017 Pescia, Pistoia, Italy
| | - Alessandro Orlandini
- Research Centre for Engineering and Agro-Food Processing, Council for Agricultural Research and Economics (CREA), Via della Pascolare 16, 00015 Monterotondo Scalo, Rome, Italy
- Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics (CREA), Via di Lanciola 12/a, 50125 Firenze, Italy
| | - Sonia Cacini
- Research Centre for Vegetables and Ornamental Crops, Council for Agricultural Research and Economics (CREA), Via dei Fiori 8, 51017 Pescia, Pistoia, Italy
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De Meester B, Van Acker R, Wouters M, Traversari S, Steenackers M, Neukermans J, Van Breusegem F, Déjardin A, Pilate G, Boerjan W. Field and saccharification performances of poplars severely downregulated in CAD1. New Phytol 2022; 236:2075-2090. [PMID: 35808905 DOI: 10.1111/nph.18366] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Lignin is one of the main factors causing lignocellulosic biomass recalcitrance to enzymatic hydrolysis. Glasshouse-grown poplars severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE 1 (CAD1), the enzyme catalysing the last step in the monolignol-specific branch of lignin biosynthesis, have increased saccharification yields and normal growth. Here, we assess the performance of these hpCAD poplars in the field under short rotation coppice culture for two consecutive rotations of 1 yr and 3 yr. While 1-yr-old hpCAD wood had 10% less lignin, 3-yr-old hpCAD wood had wild-type lignin levels. Because of their altered cell wall composition, including elevated levels of cinnamaldehydes, both 1-yr-old and 3-yr-old hpCAD wood showed enhanced saccharification yields upon harsh alkaline pretreatments (up to +85% and +77%, respectively). In contrast with previous field trials with poplars less severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE (CAD), the hpCAD poplars displayed leaning phenotypes, early bud set, early flowering and yield penalties. Moreover, hpCAD wood had enlarged vessels, decreased wood density and reduced relative and free water contents. Our data show that the phenotypes of CAD-deficient poplars are strongly dependent on the environment and underpin the importance of field trials in translating basic research towards applications.
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Affiliation(s)
- Barbara De Meester
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Rebecca Van Acker
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Marlies Wouters
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Silvia Traversari
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
- Research Institute on Terrestrial Ecosytems (IRET-CNR), Via Moruzzi 1, 56124, Pisa, Italy
| | - Marijke Steenackers
- Research Institute for Nature and Forest (INBO), Gaverstraat 4, 9500, Geraardsbergen, Belgium
| | - Jenny Neukermans
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Frank Van Breusegem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Annabelle Déjardin
- INRAE, ONF, BioForA Orléans, 2163 Avenue de la pomme de pin, 45075, Ardon, France
| | - Gilles Pilate
- INRAE, ONF, BioForA Orléans, 2163 Avenue de la pomme de pin, 45075, Ardon, France
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
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Traversari S, Pistelli L, Del Ministro B, Cacini S, Costamagna G, Ginepro M, Marchioni I, Orlandini A, Massa D. Combined effect of silicon and non-thermal plasma treatments on yield, mineral content, and nutraceutical proprieties of edible flowers of Begonia cucullata. Plant Physiol Biochem 2021; 166:1014-1021. [PMID: 34273738 DOI: 10.1016/j.plaphy.2021.07.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 06/21/2021] [Accepted: 07/10/2021] [Indexed: 06/13/2023]
Abstract
Edible flowers are becoming popular as a nutraceutical and functional food that can contribute to human nutrition with high antioxidant molecules and mineral elements. While comparative studies between different flower species have been performed, less is known about the best agronomical practices to increase yield and nutraceutical proprieties of blooms. Silicon stimulates plant resistance against stress and promotes plant growth while non-thermal plasma (NTP) technology has been applied for the disinfection and decontamination of water, as well as for increasing plant production and quality. The application of silicon and NTP technology through nutrient solution and spraying was investigated in edible flowers given that the combination of these treatments may play a role in promoting their nutritional and nutraceutical proprieties. The treatments were applied on two varieties of Begonia cucullata Willd. (white and red flowers) to explore their effects on different flower pigmentations. Plants with red flowers showed higher nutraceutical proprieties than the white ones but yielded a lower flower number. While the NTP treatment did not improve flower yield and quality, the silicon treatment increased anthocyanins and dry weight percentage in red flowers. NTP treatment increased zinc concentration, while it decreased potassium, magnesium, and manganese, and increased silicon concentration in white flowers. The combination of silicon and NTP showed negative effects on some nutraceutical proprieties of red flowers thus highlighting that the two treatments cannot be combined in edible flower production. In conclusion, the positive effect of silicon use in edible flower production has been demonstrated while the NTP technology showed contrasting results and its use should be explored in greater depth, including a consideration of its role in biotic attack prevention and reduced chemical input.
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Affiliation(s)
- Silvia Traversari
- CREA Research Centre for Vegetable and Ornamental Crops, Via dei Fiori 8, 51017, Pescia (PT), Italy.
| | - Laura Pistelli
- Department of Agriculture, Food and Agro-environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy; Interdepartmental Research Center Nutraceuticals and Food for Health (NUTRAFOOD), University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Bianca Del Ministro
- CREA Research Centre for Vegetable and Ornamental Crops, Via dei Fiori 8, 51017, Pescia (PT), Italy
| | - Sonia Cacini
- CREA Research Centre for Vegetable and Ornamental Crops, Via dei Fiori 8, 51017, Pescia (PT), Italy
| | - Giulia Costamagna
- Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125, Torino, Italy
| | - Marco Ginepro
- Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125, Torino, Italy
| | - Ilaria Marchioni
- Department of Agriculture, Food and Agro-environment, University of Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Alessandro Orlandini
- CREA Research Centre for Vegetable and Ornamental Crops, Via dei Fiori 8, 51017, Pescia (PT), Italy
| | - Daniele Massa
- CREA Research Centre for Vegetable and Ornamental Crops, Via dei Fiori 8, 51017, Pescia (PT), Italy
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Neri A, Traversari S, Andreucci A, Francini A, Sebastiani L. The Role of Aquaporin Overexpression in the Modulation of Transcription of Heavy Metal Transporters under Cadmium Treatment in Poplar. Plants (Basel) 2020; 10:plants10010054. [PMID: 33383680 PMCID: PMC7824648 DOI: 10.3390/plants10010054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/10/2020] [Accepted: 12/25/2020] [Indexed: 12/25/2022]
Abstract
Populus alba ‘Villafranca’ clone is well-known for its tolerance to cadmium (Cd). To determine the mechanisms of Cd tolerance of this species, wild-type (wt) plants were compared with transgenic plants over-expressing an aquaporin (aqua1, GenBank GQ918138). Plants were maintained in hydroponic conditions with Hoagland’s solution and treated with 10 µM of Cd, renewed every 5 d. The transcription levels of heavy metal transporter genes (PaHMA2, PaNRAMP1.3, PaNRAMP2, PaNRAMP3.1, PaNRAMP3.2, PaABCC9, and PaABCC13) were analyzed at 1, 7, and 60 d of treatment. Cd application did not induce visible toxicity symptoms in wt and aqua1 plants even after 2 months of treatment confirming the high tolerance of this poplar species to Cd. Most of the analyzed genes showed in wt plants a quick response in transcription at 1 d of treatment and an adaptation at 60 d. On the contrary, a lower transcriptional response was observed in aqua1 plants in concomitance with a higher Cd concentration in medial leaves. Moreover, PaHMA2 showed at 1 d an opposite trend within organs since it was up-regulated in root and stem of wt plants and in leaves of aqua1 plants. In summary, aqua1 overexpression in poplar improved Cd translocation suggesting a lower Cd sensitivity of aqua1 plants. This different response might be due to a different transcription of PaNRAMP3 genes that were more transcribed in wt line because of the importance of this gene in Cd compartmentalization.
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Affiliation(s)
- Andrea Neri
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
| | - Silvia Traversari
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
| | - Andrea Andreucci
- Department of Biology, University of Pisa, via Luca Ghini 13, 56126 Pisa, Italy
- Correspondence: (A.A.); (A.F.)
| | - Alessandra Francini
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
- Correspondence: (A.A.); (A.F.)
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy; (A.N.); (S.T.); (L.S.)
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Traversari S, De Carlo A, Traversi ML, Minnocci A, Francini A, Sebastiani L, Giovannelli A. Osmotic adjustments support growth of poplar cultured cells under high concentrations of carbohydrates. Plant Cell Rep 2020; 39:971-982. [PMID: 32314047 DOI: 10.1007/s00299-020-02542-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Poplar callus maintained a specific difference in osmotic potential with respect to media when supplemented with different carbohydrate concentrations. This balance in osmotic potential guaranteed the growth capacity. Osmotic stress is caused by several abiotic factors such as drought, salinity, or freezing. However, the threshold of osmotic potential that allows the growth under stress conditions has not been thoroughly studied. In this study, different levels of osmotic stress in Populus alba (L.) callus have been induced with the addition of mannitol or sorbitol in the medium (from 0 to 500 mM). The key factor for preserving the growth was observed to be the restoration of a constant difference in osmotic potential between callus and medium for all the tested conditions. The osmotic adjustments were primarily achieved with the uptake of mannitol or sorbitol from the media considering their chemical properties instead of their biological functions. The decrease in water content (from - 1 to - 10% after 21 days) and mineral elements, such as potassium, calcium, and magnesium, together with the alterations in cell morphology, did not show negative effects on growth. The activity of sorbitol dehydrogenase was detected for the first time in poplar (+ 4.7 U l-1 in callus treated with sorbitol compared to control callus). This finding suggested the importance of choosing carefully the molecules used to exert osmotic stress for separating the dual function of carbohydrates in osmotic adjustments and cell metabolism.
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Affiliation(s)
- Silvia Traversari
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Anna De Carlo
- Institute of Bioeconomy (IBE-CNR), Via Madonna del Piano 10, Sesto F.no, 50019, Florence, Italy
| | - Maria Laura Traversi
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, Sesto F.no, 50019, Florence, Italy
| | - Antonio Minnocci
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Alessandra Francini
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy.
| | - Alessio Giovannelli
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, Sesto F.no, 50019, Florence, Italy
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Traversari S, Neri A, Traversi ML, Giovannelli A, Francini A, Sebastiani L. Daily osmotic adjustments in stem may be good predictors of water stress intensity in poplar. Plant Physiol Biochem 2020; 146:13-22. [PMID: 31710921 DOI: 10.1016/j.plaphy.2019.10.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
Drought events impair the carbon and water balances in plants. Climate changes highlight the importance to understand the limits of woody species to reallocate carbon in different processes and the mechanisms driving the osmotic adjustments during the day under stress. In this frame, the aim of this work was to investigate the plant capability to shift energy among competing sinks and preserve the osmotic balance during the day under severe short periods of water deficit. The role of carbohydrates as osmolytes as well as energy sources was investigated in poplar plants. Results highlighted that during water deficit soluble sugars, derived both from the new synthetised carbon and starch degradation, were principally convoyed in the bark. This increase in carbohydrates allowed the maintenance of a water reserve used during the day to prevent a water decrease within the xylem. The decrease of xylem sap osmotic potential during the night, driven by an increase of K, Ca, and fructose (+0.46, 0.52, and 0.26 mg ml-1 in water limited plants after 8 days of withholding water, respectively), probably further attracted water into the xylem. This response mechanism increased at higher water deficit intensity. The little variations in carbohydrates and mineral elements within the leaves highlighted the main role of sinks rather than sources in the early response to water deficit.
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Affiliation(s)
- Silvia Traversari
- BioLabs Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Andrea Neri
- BioLabs Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
| | - Maria Laura Traversi
- Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, 50019, Sesto F.no, Florence, Italy
| | - Alessio Giovannelli
- BioLabs Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy; Research Institute on Terrestrial Ecosystems (IRET-CNR), Via Madonna del Piano 10, 50019, Sesto F.no, Florence, Italy
| | - Alessandra Francini
- BioLabs Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy.
| | - Luca Sebastiani
- BioLabs Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
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Traversari S, Francini A, Traversi ML, Emiliani G, Sorce C, Sebastiani L, Giovannelli A. Can sugar metabolism in the cambial region explain the water deficit tolerance in poplar? J Exp Bot 2018; 69:4083-4097. [PMID: 29846657 PMCID: PMC6054210 DOI: 10.1093/jxb/ery195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/16/2018] [Indexed: 05/06/2023]
Abstract
Drought dramatically affects wood production by adversely impacting cambial cells and their derivatives. Photosynthesis and assimilate transport are also affected by drought conditions. Two poplar genotypes, Populus deltoides 'Dvina' and Populus alba 'Marte', demonstrated contrasting growth performance and water-carbon balance strategies; a mechanistic understanding of the water deficit response was provided by these poplar species. 'Marte' was found to be more anisohydric than 'Dvina'. This characteristic was associated with the capacity to reallocate carbohydrates during water deficits. In contrast, 'Dvina' displayed more conservative water management; carbohydrates were preferably stored or used for cellulose production rather than to achieve an osmotic balance between the phloem and the xylem. Data confirmed that the more 'risk-taking' characteristic of 'Marte' allowed a rapid recovery following water deficit and was connected to a different carbohydrate metabolism.
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Affiliation(s)
- Silvia Traversari
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà, Pisa, Italy
| | - Alessandra Francini
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà, Pisa, Italy
| | - Maria Laura Traversi
- Trees and Timber Institute (IVALSA-CNR), Via Madonna del Piano, Sesto F.no (Florence), Italy
| | - Giovanni Emiliani
- Trees and Timber Institute (IVALSA-CNR), Via Madonna del Piano, Sesto F.no (Florence), Italy
| | - Carlo Sorce
- Department of Biology, University of Pisa, Via Luca Ghini, Pisa, Italy
| | - Luca Sebastiani
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà, Pisa, Italy
| | - Alessio Giovannelli
- Institute of Life Sciences, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà, Pisa, Italy
- Trees and Timber Institute (IVALSA-CNR), Via Madonna del Piano, Sesto F.no (Florence), Italy
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