1
|
Shen S, Ma S, Wu L, Zhou SL, Ruan YL. Winners take all: competition for carbon resource determines grain fate. TRENDS IN PLANT SCIENCE 2023; 28:893-901. [PMID: 37080837 DOI: 10.1016/j.tplants.2023.03.015] [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: 11/28/2022] [Revised: 03/13/2023] [Accepted: 03/18/2023] [Indexed: 05/03/2023]
Abstract
As an evolutionary strategy, plants overproduce ovaries as a safety net for survival, with those losing in the competition for resources being aborted. Grain abortion is, however, highly detrimental agronomically. The molecular basis of selective abortion of grain siblings remains unknown. In this opinion article we assess the current understanding of the molecular players controlling carbon resource import into ovaries and young grains, followed by an evaluation of the spatial hierarchy of sink capacity among grain siblings, focusing on the roles exerted by sugar transporters and enzymes. We argue that, upon sequential pollination and fertilization, robust activation of the carbon import and sugar signaling system plays a key role in establishing the capacity of grain siblings to acquire enough carbon resources to survive and thrive.
Collapse
Affiliation(s)
- Si Shen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Si Ma
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Limin Wu
- Agriculture and Food, CSIRO, Canberra, ACT 2617, Australia
| | - Shun-Li Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Yong-Ling Ruan
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of Horticulture, Northwest A&F University, Yangling, 712100, China; Division of Plant Sciences, Research School of Biology, The Australian National University, Canberra, ACT 2601, Australia.
| |
Collapse
|
2
|
Borisjuk L, Horn P, Chapman K, Jakob PM, Gündel A, Rolletschek H. Seeing plants as never before. THE NEW PHYTOLOGIST 2023; 238:1775-1794. [PMID: 36895109 DOI: 10.1111/nph.18871] [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: 12/15/2022] [Accepted: 02/06/2023] [Indexed: 05/04/2023]
Abstract
Imaging has long supported our ability to understand the inner life of plants, their development, and response to a dynamic environment. While optical microscopy remains the core tool for imaging, a suite of novel technologies is now beginning to make a significant contribution to visualize plant metabolism. The purpose of this review was to provide the scientific community with an overview of current imaging methods, which rely variously on either nuclear magnetic resonance (NMR), mass spectrometry (MS) or infrared (IR) spectroscopy, and to present some examples of their application in order to illustrate their utility. In addition to providing a description of the basic principles underlying these technologies, the review discusses their various advantages and limitations, reveals the current state of the art, and suggests their potential application to experimental practice. Finally, a view is presented as to how the technologies will likely develop, how these developments may encourage the formulation of novel experimental strategies, and how the enormous potential of these technologies can contribute to progress in plant science.
Collapse
Affiliation(s)
- Ljudmilla Borisjuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| | - Patrick Horn
- Department of Biological Sciences, BioDiscovery Institute, University of North Texas, Denton, TX, 76203, USA
| | - Kent Chapman
- Department of Biological Sciences, BioDiscovery Institute, University of North Texas, Denton, TX, 76203, USA
| | - Peter M Jakob
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Andre Gündel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| | - Hardy Rolletschek
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| |
Collapse
|
3
|
Langer M, Hilo A, Guan JC, Koch KE, Xiao H, Verboven P, Gündel A, Wagner S, Ortleb S, Radchuk V, Mayer S, Nicolai B, Borisjuk L, Rolletschek H. Causes and consequences of endogenous hypoxia on growth and metabolism of developing maize kernels. PLANT PHYSIOLOGY 2023; 192:1268-1288. [PMID: 36691698 PMCID: PMC10231453 DOI: 10.1093/plphys/kiad038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/13/2022] [Accepted: 12/19/2022] [Indexed: 06/01/2023]
Abstract
Maize (Zea mays) kernels are the largest cereal grains, and their endosperm is severely oxygen deficient during grain fill. The causes, dynamics, and mechanisms of acclimation to hypoxia are minimally understood. Here, we demonstrate that hypoxia develops in the small, growing endosperm, but not the nucellus, and becomes the standard state, regardless of diverse structural and genetic perturbations in modern maize (B73, popcorn, sweet corn), mutants (sweet4c, glossy6, waxy), and non-domesticated wild relatives (teosintes and Tripsacum species). We also uncovered an interconnected void space at the chalazal pericarp, providing superior oxygen supply to the placental tissues and basal endosperm transfer layer. Modeling indicated a very high diffusion resistance inside the endosperm, which, together with internal oxygen consumption, could generate steep oxygen gradients at the endosperm surface. Manipulation of oxygen supply induced reciprocal shifts in gene expression implicated in controlling mitochondrial functions (23.6 kDa Heat-Shock Protein, Voltage-Dependent Anion Channel 2) and multiple signaling pathways (core hypoxia genes, cyclic nucleotide metabolism, ethylene synthesis). Metabolite profiling revealed oxygen-dependent shifts in mitochondrial pathways, ascorbate metabolism, starch synthesis, and auxin degradation. Long-term elevated oxygen supply enhanced the rate of kernel development. Altogether, evidence here supports a mechanistic framework for the establishment of and acclimation to hypoxia in the maize endosperm.
Collapse
Affiliation(s)
- Matthias Langer
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Alexander Hilo
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Jiahn-Chou Guan
- University of Florida, Horticultural Sciences Department, Fifield Hall, 2550 Hull Rd., PO Box 110690, Gainesville, Florida, 32611, USA
| | - Karen E Koch
- University of Florida, Horticultural Sciences Department, Fifield Hall, 2550 Hull Rd., PO Box 110690, Gainesville, Florida, 32611, USA
| | - Hui Xiao
- Biosystems Department, KU Leuven—University of Leuven, BIOSYST-MeBioS, Willem de Croylaan 42, B-3001 Leuven, Belgium
| | - Pieter Verboven
- Biosystems Department, KU Leuven—University of Leuven, BIOSYST-MeBioS, Willem de Croylaan 42, B-3001 Leuven, Belgium
| | - Andre Gündel
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Steffen Wagner
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Stefan Ortleb
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Volodymyr Radchuk
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Simon Mayer
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Bart Nicolai
- Biosystems Department, KU Leuven—University of Leuven, BIOSYST-MeBioS, Willem de Croylaan 42, B-3001 Leuven, Belgium
| | - Ljudmilla Borisjuk
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| | - Hardy Rolletschek
- Molecular Genetics Department, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung, Corrensstrasse, 06466 Seeland-Gatersleben, Germany
| |
Collapse
|
4
|
Radchuk V, Belew ZM, Gündel A, Mayer S, Hilo A, Hensel G, Sharma R, Neumann K, Ortleb S, Wagner S, Muszynska A, Crocoll C, Xu D, Hoffie I, Kumlehn J, Fuchs J, Peleke FF, Szymanski JJ, Rolletschek H, Nour-Eldin HH, Borisjuk L. SWEET11b transports both sugar and cytokinin in developing barley grains. THE PLANT CELL 2023; 35:2186-2207. [PMID: 36857316 DOI: 10.1093/plcell/koad055] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/17/2023] [Accepted: 02/17/2023] [Indexed: 05/30/2023]
Abstract
Even though Sugars Will Eventually be Exported Transporters (SWEETs) have been found in every sequenced plant genome, a comprehensive understanding of their functionality is lacking. In this study, we focused on the SWEET family of barley (Hordeum vulgare). A radiotracer assay revealed that expressing HvSWEET11b in African clawed frog (Xenopus laevis) oocytes facilitated the bidirectional transfer of not only just sucrose and glucose, but also cytokinin. Barley plants harboring a loss-of-function mutation of HvSWEET11b could not set viable grains, while the distribution of sucrose and cytokinin was altered in developing grains of plants in which the gene was knocked down. Sucrose allocation within transgenic grains was disrupted, which is consistent with the changes to the cytokinin gradient across grains, as visualized by magnetic resonance imaging and Fourier transform infrared spectroscopy microimaging. Decreasing HvSWEET11b expression in developing grains reduced overall grain size, sink strength, the number of endopolyploid endosperm cells, and the contents of starch and protein. The control exerted by HvSWEET11b over sugars and cytokinins likely predetermines their synergy, resulting in adjustments to the grain's biochemistry and transcriptome.
Collapse
Affiliation(s)
- Volodymyr Radchuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Zeinu M Belew
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Andre Gündel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Simon Mayer
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Alexander Hilo
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Goetz Hensel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- Centre of Region Haná for Biotechnological and Agricultural Research, Czech Advanced Technology and Research Institute, Palacký University Olomouc, 78371 Olomouc, Czech Republic
| | - Rajiv Sharma
- Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JGUK
| | - Kerstin Neumann
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Stefan Ortleb
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Steffen Wagner
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Aleksandra Muszynska
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Christoph Crocoll
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Deyang Xu
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Iris Hoffie
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Jochen Kumlehn
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Joerg Fuchs
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Fritz F Peleke
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Jedrzej J Szymanski
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
- IBG-4 Bioinformatics, Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Hardy Rolletschek
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| | - Hussam H Nour-Eldin
- Faculty of Science, Department of Plant and Environmental Sciences, DynaMo Center of Excellence, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Ljudmilla Borisjuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466 Gatersleben, Germany
| |
Collapse
|
5
|
Gersony JT, Holbrook NM. Phloem turgor is maintained during severe drought in Ricinus communis. PLANT, CELL & ENVIRONMENT 2022; 45:2898-2905. [PMID: 35854434 DOI: 10.1111/pce.14401] [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: 05/04/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
The phloem is a key player in whole plant functioning-transporting carbon from sites of production to sites of demand-and is likely influenced by drought due to its dependence on water for generating pressure-driven bulk flow transport. Yet, phloem functioning during drought remains largely unknown due to a lack of experimental studies. Here, we use a phloem-bleeding species, Ricinus communis, to investigate phloem loss-of-function in the context of leaf physiological processes, the mechanisms of phloem turgor maintenance during drought, and the role of turgor in phloem loss-of-function. We found that the solute concentration in the phloem sap doubled over the drought, which allowed phloem turgor to be maintained past the point at which leaves have reached permanent stomatal closure. We also found that phloem turgor did not decline before bleeding ceased, which suggests that phloem bleeding ceassation (interpreted as the cessation of transport) occurred when the phloem still had turgor. In sum, our findings highlight the robustness of phloem functioning, with important implications for forecasting whole-plant carbon dynamics and drought-induced tree mortality.
Collapse
Affiliation(s)
- Jess Toby Gersony
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
- Department of Natural Resources and the Environment, University of New Hampshire, Durham, New Hampshire, USA
- Department of Biological Sciences, Smith College, Northampton, Massachusetts, USA
| | - Noel M Holbrook
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, USA
| |
Collapse
|
6
|
Hsiao AS, Huang JY. Bioimaging tools move plant physiology studies forward. FRONTIERS IN PLANT SCIENCE 2022; 13:976627. [PMID: 36204075 PMCID: PMC9530904 DOI: 10.3389/fpls.2022.976627] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Affiliation(s)
- An-Shan Hsiao
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Ji-Ying Huang
- Cell Biology Core Lab, Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| |
Collapse
|
7
|
Siriwong S, Tanthanuch W, Srisamut D, Chantarakhon C, Kamkajon K, Thumanu K. Performance Evaluation of Focal Plane Array (FPA)-FTIR and Synchrotron Radiation (SR)-FTIR Microspectroscopy to Classify Rice Components. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-10. [PMID: 36062386 DOI: 10.1017/s1431927622012454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of biochemical analysis techniques to study heterogeneous biological samples is increasing. These techniques include synchrotron radiation Fourier transform infrared (SR-FTIR) microspectroscopy. This method has been applied to analyze biological tissue with multivariate statistical analysis to classify the components revealed by the spectral data. This study aims to compare the efficiencies of SR-FTIR microspectroscopy and focal plane array (FPA)-FTIR microspectroscopy when classifying rice tissue components. Spectral data were acquired for mapping the same sample areas from both techniques. Principal component analysis and cluster imaging were used to investigate the biochemical variations of the tissue types. The classification was based on the functional groups of pectin, protein, and polysaccharide. Four layers from SR-FTIR microspectroscopy including pericarp, aleurone layer, sub-aleurone layer, and endosperm were classified using cluster imaging, while FPA-FTIR microspectroscopy could classify only three layers of pericarp, aleurone layer, and endosperm. Moreover, SR-FTIR microspectroscopy increased the image contrast of the biochemical distribution in rice tissue more efficiently than FPA-FTIR microspectroscopy. We have demonstrated the capability of the high-resolution synchrotron technique and its ability to clarify small structures in rice tissue. The use of this technique might increase in future studies of tissue characterization.
Collapse
Affiliation(s)
- Supatcharee Siriwong
- Research Facility Department, Synchrotron Light Research Institute (Public Organization), Mueang District, Nakhon Ratchasima, 30000, Thailand
| | - Waraporn Tanthanuch
- Research Facility Department, Synchrotron Light Research Institute (Public Organization), Mueang District, Nakhon Ratchasima, 30000, Thailand
| | - Duangjai Srisamut
- Research Facility Department, Synchrotron Light Research Institute (Public Organization), Mueang District, Nakhon Ratchasima, 30000, Thailand
| | - Chulalak Chantarakhon
- Research Facility Department, Synchrotron Light Research Institute (Public Organization), Mueang District, Nakhon Ratchasima, 30000, Thailand
| | - Kanokwan Kamkajon
- Center of Calcium and Bone Research (COCAB), Department of Physiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Kanjana Thumanu
- Research Facility Department, Synchrotron Light Research Institute (Public Organization), Mueang District, Nakhon Ratchasima, 30000, Thailand
| |
Collapse
|
8
|
Mayer S, Munz E, Hammer S, Wagner S, Guendel A, Rolletschek H, Jakob PM, Borisjuk L, Neuberger T. Quantitative monitoring of paramagnetic contrast agents and their allocation in plant tissues via DCE-MRI. PLANT METHODS 2022; 18:47. [PMID: 35410361 PMCID: PMC8996644 DOI: 10.1186/s13007-022-00877-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 03/18/2022] [Indexed: 05/12/2023]
Abstract
BACKGROUND Studying dynamic processes in living organisms with MRI is one of the most promising research areas. The use of paramagnetic compounds as contrast agents (CA), has proven key to such studies, but so far, the lack of appropriate techniques limits the application of CA-technologies in experimental plant biology. The presented proof-of-principle aims to support method and knowledge transfer from medical research to plant science. RESULTS In this study, we designed and tested a new approach for plant Dynamic Contrast Enhanced Magnetic Resonance Imaging (pDCE-MRI). The new approach has been applied in situ to a cereal crop (Hordeum vulgare). The pDCE-MRI allows non-invasive investigation of CA allocation within plant tissues. In our experiments, gadolinium-DTPA, the most commonly used contrast agent in medical MRI, was employed. By acquiring dynamic T1-maps, a new approach visualizes an alteration of a tissue-specific MRI parameter T1 (longitudinal relaxation time) in response to the CA. Both, the measurement of local CA concentration and the monitoring of translocation in low velocity ranges (cm/h) was possible using this CA-enhanced method. CONCLUSIONS A novel pDCE-MRI method is presented for non-invasive investigation of paramagnetic CA allocation in living plants. The temporal resolution of the T1-mapping has been significantly improved to enable the dynamic in vivo analysis of transport processes at low-velocity ranges, which are common in plants. The newly developed procedure allows to identify vascular regions and to estimate their involvement in CA allocation. Therefore, the presented technique opens a perspective for further development of CA-aided MRI experiments in plant biology.
Collapse
Affiliation(s)
- Simon Mayer
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Eberhard Munz
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Sebastian Hammer
- Institute of Experimental Physics 6, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Steffen Wagner
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| | - Andre Guendel
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| | - Hardy Rolletschek
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany
| | - Peter M Jakob
- Institute of Experimental Physics 5, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Ljudmilla Borisjuk
- Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Thomas Neuberger
- Huck Institutes of the Life Sciences, The Pennsylvania State University, 113 Chandlee Lab, University Park, PA, 16802, USA.
- Department of Biomedical Engineering, The Pennsylvania State University, 113 Chandlee Lab, University Park, PA, 16802, USA.
| |
Collapse
|
9
|
Dinant S, Le Hir R. Delving deeper into the link between sugar transport, sugar signaling, and vascular system development. PHYSIOLOGIA PLANTARUM 2022; 174:e13684. [PMID: 35396718 DOI: 10.1111/ppl.13684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Plant growth and development rely on the transport and use of sugars produced during photosynthesis. Sugars have a dual function as nutrients and signal molecules in the cell. Many factors maintaining sugar homeostasis and signaling are now identified, but our understanding of the mechanisms involved in coordinating intracellular and intercellular sugar translocation is still limited. We also know little about the interplay between sugar transport and signaling and the formation of the vascular system, which controls long-distance sugar translocation. Sugar signaling has been proposed to play a role; however, evidence to support this hypothesis is still limited. Here, we exploited recent transcriptomics datasets produced in aerial organs of Arabidopsis to identify genes coding for sugar transporters or signaling components expressed in the vascular cells. We identified genes belonging to sugar transport and signaling for which no information is available regarding a role in vasculature development. In addition, the transcriptomics datasets obtained from sugar-treated Arabidopsis seedlings were used to assess the sugar-responsiveness of known genes involved in vascular differentiation. Interestingly, several key regulators of vascular development were found to be regulated by either sucrose or glucose. Especially CLE41, which controls the procambial cell fate, was oppositely regulated by sucrose or glucose in these datasets. Even if more experimental data are necessary to confirm these findings, this survey supports a link between sugar transport/signaling and vascular system development.
Collapse
Affiliation(s)
- Sylvie Dinant
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Rozenn Le Hir
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| |
Collapse
|
10
|
Muszynska A, Guendel A, Melzer M, Tandron Moya YA, Röder MS, Rolletschek H, Rutten T, Munz E, Melz G, Ortleb S, Borisjuk L, Börner A. A mechanistic view on lodging resistance in rye and wheat: a multiscale comparative study. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:2646-2661. [PMID: 34449959 PMCID: PMC8633492 DOI: 10.1111/pbi.13689] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 07/10/2021] [Accepted: 08/22/2021] [Indexed: 05/12/2023]
Abstract
The development of crop varieties that are resistant to lodging is a top priority for breeding programmes. Herein, we characterize the rye mutant ´Stabilstroh' ('stable straw') possessing an exceptional combination of high lodging resistance, tall posture and high biomass production. Nuclear magnetic resonance imaging displayed the 3-dimensional assembly of vascular bundles in stem. A higher number of vascular bundles and a higher degree of their incline were the features of lodging-resistant versus lodging-prone lines. Histology and electron microscopy revealed that stems are fortified by a higher proportion of sclerenchyma and thickened cell walls, as well as some epidermal invaginations. Biochemical analysis using Fourier-transform infrared spectroscopy and inductively coupled plasma-optical emission spectrometry further identified elevated levels of lignin, xylan, zinc and silicon as features associated with high lodging resistance. Combined effects of above features caused superior culm stability. A simplistic mathematical model showed how mechanical forces distribute within the stem under stress. Main traits of the lodging-resistant parental line were heritable and could be traced back to the genetic structure of the mutant. Evaluation of lodging-resistant wheat 'Babax' ('Baviacora') versus contrasting, lodging-prone, genotype ´Pastor´ agreed with above findings on rye. Our findings on mechanical stability and extraordinary culm properties may be important for breeders for the improvement of lodging resistance of tall posture cereal crops.
Collapse
Affiliation(s)
- Aleksandra Muszynska
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Andre Guendel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Michael Melzer
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | | | - Marion S. Röder
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Hardy Rolletschek
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Twan Rutten
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Eberhard Munz
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
- Institute of Experimental Physics 5University of WürzburgWürzburgGermany
| | | | - Stefan Ortleb
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Ljudmilla Borisjuk
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| | - Andreas Börner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)Stadt SeelandGermany
| |
Collapse
|
11
|
Probing the Metabolic Landscape of Plant Vascular Bundles by Infrared Fingerprint Analysis, Imaging and Mass Spectrometry. Biomolecules 2021; 11:biom11111717. [PMID: 34827716 PMCID: PMC8615794 DOI: 10.3390/biom11111717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 11/27/2022] Open
Abstract
Fingerprint analysis is a common technique in forensic and criminal investigations. Similar techniques exist in the field of infrared spectroscopy to identify biomolecules according to their characteristic spectral fingerprint features. These unique markers are located in a wavenumber range from 1800 to 600 cm−1 in the mid infrared region. Here, a novel bioanalytical concept of correlating these spectral features with corresponding mass spectrometry datasets to unravel metabolic clusters within complex plant tissues was applied. As proof of concept, vascular bundles of oilseed rape (Brassica napus) were investigated, one of the most important and widely cultivated temperate zone oilseed crops. The link between mass spectrometry data and spectral data identified features that co-aligned within both datasets. Regions of origin were then detected by searching for these features in hyperspectral images of plant tissues. This approach, based on co-alignment and co-localization, finally enabled the detection of eight distinct metabolic clusters, reflecting functional and structural arrangements within the vascular bundle. The proposed analytical concept may assist future synergistic research approaches and may lead to biotechnological innovations with regard to crop yield and sustainability.
Collapse
|
12
|
Rolletschek H, Mayer S, Boughton B, Wagner S, Ortleb S, Kiel C, Roessner U, Borisjuk L. The metabolic environment of the developing embryo: A multidisciplinary approach on oilseed rapeseed. JOURNAL OF PLANT PHYSIOLOGY 2021; 265:153505. [PMID: 34481359 DOI: 10.1016/j.jplph.2021.153505] [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: 05/28/2021] [Revised: 08/09/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Brassicaceae seeds consist of three genetically distinct structures: the embryo, endosperm and seed coat, all of which are involved in assimilate allocation during seed development. The complexity of their metabolic interrelations remains unresolved to date. In the present study, we apply state-of-the-art imaging and analytical approaches to assess the metabolic environment of the Brassica napus embryo. Nuclear magnetic resonance imaging (MRI) provided volumetric data on the living embryo and endosperm, revealing how the endosperm envelops the embryo, determining endosperm's priority in assimilate uptake from the seed coat during early development. MRI analysis showed higher levels of sugars in the peripheral endosperm facing the seed coat, but a lower sugar content within the central vacuole and the region surrounding the embryo. Feeding intact siliques with 13C-labeled sucrose allowed tracing of the post-phloem route of sucrose transfer within the seed at the heart stage of embryogenesis, by means of mass spectrometry imaging. Quantification of over 70 organic and inorganic compounds in the endosperm revealed shifts in their abundance over different stages of development, while sugars and potassium were the main determinants of osmolality throughout these stages. Our multidisciplinary approach allows access to the hidden aspects of endosperm metabolism, a task which remains unattainable for the small-seeded model plant Arabidopsis thaliana.
Collapse
Affiliation(s)
- Hardy Rolletschek
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Simon Mayer
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Berin Boughton
- Australian National Phenome Centre, Murdoch University, Western Australia, 6150, Australia.
| | - Steffen Wagner
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Stefan Ortleb
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Christina Kiel
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| | - Ute Roessner
- School of BioSciences, The University of Melbourne, Victoria, 3010, Australia.
| | - Ljudmilla Borisjuk
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Corrensstrasse 3, 06466, Seeland-Gatersleben, Germany.
| |
Collapse
|
13
|
Gersony JT, McClelland A, Holbrook NM. Raman spectroscopy reveals high phloem sugar content in leaves of canopy red oak trees. THE NEW PHYTOLOGIST 2021; 232:418-424. [PMID: 33991343 DOI: 10.1111/nph.17465] [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: 09/15/2020] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
A robust understanding of phloem functioning in tall trees evades us because current methods for collecting phloem sap do not lend themselves to measuring actively photosynthesizing canopy leaves. We show that Raman spectroscopy can be used as a quantitative tool to assess sucrose concentration in leaf samples. Specifically, we found that Raman spectroscopy can predict physiologically relevant sucrose concentrations (adjusted R2 of 0.9) in frozen leaf extract spiked with sucrose. We then apply this method to estimate sieve element sucrose concentration in rapidly frozen petioles of canopy red oak (Quercus rubra) trees and found that sucrose concentrations are > 1100 mM at midday and midnight. This concentration is predicted to generate a sieve element turgor pressure high enough to generate bulk flow through the phloem, but is potentially too high to allow for sucrose diffusion from photosynthetic cells. Our findings support the Münch hypothesis for phloem transport once the carbon is in the phloem and challenge the passive-loading hypothesis for carbon movement into the phloem for red oak. This study provides the first ˜in-situ (frozen in the functioning state) source sieve element sucrose concentration characterization in any plant, opening a new avenue for investigation of phloem functioning.
Collapse
Affiliation(s)
- Jess T Gersony
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Arthur McClelland
- Center for Nanoscale Systems, Harvard University, Cambridge, MA, 02138, USA
| | - N Michele Holbrook
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA
| |
Collapse
|
14
|
Ray DM, Savage JA. Seasonal changes in temperate woody plant phloem anatomy and physiology: implications for long-distance transport. AOB PLANTS 2021; 13:plab028. [PMID: 34234934 PMCID: PMC8255074 DOI: 10.1093/aobpla/plab028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 05/21/2021] [Indexed: 06/13/2023]
Abstract
Seasonal changes in climate are accompanied by shifts in carbon allocation and phenological changes in woody angiosperms, the timing of which can have broad implications for species distributions, interactions and ecosystem processes. During critical transitions from autumn to winter and winter to spring, physiological and anatomical changes within the phloem could impose a physical limit on the ability of woody angiosperms to transport carbon and signals. There is a paucity of the literature that addresses tree (floral or foliar) phenology, seasonal phloem anatomy and seasonal phloem physiology together, so our knowledge of how carbon transport could fluctuate seasonally, especially in temperate climates is limited. We review phloem phenology focussing on how sieve element anatomy and phloem sap flow could affect carbon availability throughout the year with a focus on winter. To investigate whether flow is possible in the winter, we construct a simple model of phloem sap flow and investigate how changes to the sap concentration, pressure gradient and sieve plate pores could influence flow during the winter. Our model suggests that phloem transport in some species could occur year-round, even in winter, but current methods for measuring all the parameters surrounding phloem sap flow make it difficult to test this hypothesis. We highlight outstanding questions that remain about phloem functionality in the winter and emphasize the need for new methods to address gaps in our knowledge about phloem function.
Collapse
Affiliation(s)
- Dustin M Ray
- Department of Biology, University of Minnesota Duluth, Duluth, MN 55811, USA
| | - Jessica A Savage
- Department of Biology, University of Minnesota Duluth, Duluth, MN 55811, USA
| |
Collapse
|
15
|
Radchuk V, Tran V, Hilo A, Muszynska A, Gündel A, Wagner S, Fuchs J, Hensel G, Ortleb S, Munz E, Rolletschek H, Borisjuk L. Grain filling in barley relies on developmentally controlled programmed cell death. Commun Biol 2021; 4:428. [PMID: 33785858 PMCID: PMC8009944 DOI: 10.1038/s42003-021-01953-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 03/02/2021] [Indexed: 11/25/2022] Open
Abstract
Cereal grains contribute substantially to the human diet. The maternal plant provides the carbohydrate and nitrogen sources deposited in the endosperm, but the basis for their spatial allocation during the grain filling process is obscure. Here, vacuolar processing enzymes have been shown to both mediate programmed cell death (PCD) in the maternal tissues of a barley grain and influence the delivery of assimilate to the endosperm. The proposed centrality of PCD has implications for cereal crop improvement. Radchuk et al. report on the role of vacuolar processing enzymes (VPEs) in mediating programmed cell death (PCD) in the maternal tissues of a barley grain and influencing the delivery of assimilate to the endosperm. This study presents a means of increasing the efficiency of the grain filling process in the major cereal crop species by manipulating the timing of PCD.
Collapse
Affiliation(s)
- Volodymyr Radchuk
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany.
| | - Van Tran
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Alexander Hilo
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Aleksandra Muszynska
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Andre Gündel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Steffen Wagner
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Joerg Fuchs
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Goetz Hensel
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Stefan Ortleb
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Eberhard Munz
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Hardy Rolletschek
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany
| | - Ljudmilla Borisjuk
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Seeland, Germany.
| |
Collapse
|
16
|
Zhan L, Huang X, Xue J, Liu H, Xiong C, Wang J, Nie Z. MALDI-TOF/TOF tandem mass spectrometry imaging reveals non-uniform distribution of disaccharide isomers in plant tissues. Food Chem 2020; 338:127984. [PMID: 33092001 DOI: 10.1016/j.foodchem.2020.127984] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/20/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022]
Abstract
Mass spectrometry imaging (MSI) is a powerful technique for investigating the biomolecular locations within tissues. However, the isomeric compounds are rarely distinguished due to inability of MSI to differentiate isomers in the probing area. Coupling tandem mass spectrometry with MSI can facilitate differentiating isomeric compounds. Here MALDI-TOF/TOF tandem mass spectrometry imaging approach was applied to probing the spatial distributions of isomeric disaccharides in plant tissues. First, MS/MS imaging analysis of disaccharide-matrix droplet spots demonstrated the feasibility of distinguishing isomeric species in tissues, by measuring the relative intensity of specific fragments. Then, tandem MS imaging of disaccharides in onion bulb tissues indicated that sucrose and other unknown non-sucrose disaccharides exhibit heterogeneous locations throughout the tissues. This method enables us to image disaccharide isomers differentially in biological tissues, and to discover new saccharide species in plant. This work also emphasizes the necessity of considering isobaric compounds when interpreting MSI results.
Collapse
Affiliation(s)
- Lingpeng Zhan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xi Huang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jinjuan Xue
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huihui Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Caiqiao Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Jiyun Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Zongxiu Nie
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; National Center for Mass Spectrometry in Beijing, Beijing 100190, China.
| |
Collapse
|
17
|
Gersony JT, Hochberg U, Rockwell FE, Park M, Gauthier PPG, Holbrook NM. Leaf Carbon Export and Nonstructural Carbohydrates in Relation to Diurnal Water Dynamics in Mature Oak Trees. PLANT PHYSIOLOGY 2020; 183:1612-1621. [PMID: 32471810 PMCID: PMC7401141 DOI: 10.1104/pp.20.00426] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 05/21/2020] [Indexed: 05/03/2023]
Abstract
Trees typically experience large diurnal depressions in water potential, which may impede carbon export from leaves during the day because the xylem is the source of water for the phloem. As water potential becomes more negative, higher phloem osmotic concentrations are needed to draw water in from the xylem. Generating this high concentration of sugar in the phloem is particularly an issue for the ∼50% of trees that exhibit passive loading. These ideas motivate the hypothesis that carbon export in woody plants occurs predominantly at night, with sugars that accumulate during the day assisting in mesophyll turgor maintenance or being converted to starch. To test this, diurnal and seasonal patterns of leaf nonstructural carbohydrates, photosynthesis, solute, and water potential were measured, and carbon export was estimated in leaves of five mature (>20 m tall) red oak (Quercus rubra) trees, a species characterized as a passive loader. Export occurred throughout the day at equal or higher rates than at night despite a decrease in water potential to -1.8 MPa at midday. Suc and starch accumulated over the course of the day, with Suc contributing ∼50% of the 0.4 MPa diurnal osmotic adjustment. As a result of this diurnal osmotic adjustment, estimates of midday turgor were always >0.7 MPa. These findings illustrate the robustness of phloem functioning despite diurnal fluctuations in leaf water potential and the role of nonstructural carbohydrates in leaf turgor maintenance.
Collapse
Affiliation(s)
- Jess T Gersony
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Uri Hochberg
- Department of Soil, Water and Environmental Science, Agriculture Research Organisation, 7505101 Rishon LeZion, Israel
| | - Fulton E Rockwell
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Maria Park
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Paul P G Gauthier
- Department of Geosciences, Princeton University, Princeton, New Jersey 08544
| | - N Michele Holbrook
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138
| |
Collapse
|
18
|
Schnurbusch T. Wheat and barley biology: Towards new frontiers. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2019; 61:198-203. [PMID: 30694021 DOI: 10.1111/jipb.12782] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Thorsten Schnurbusch
- Independent HEISENBERG-Research Group Plant Architecture, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, OT Gatersleben, 06466 Seeland, Germany
| |
Collapse
|
19
|
Aubry E, Dinant S, Vilaine F, Bellini C, Le Hir R. Lateral Transport of Organic and Inorganic Solutes. PLANTS (BASEL, SWITZERLAND) 2019; 8:E20. [PMID: 30650538 PMCID: PMC6358943 DOI: 10.3390/plants8010020] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/10/2019] [Accepted: 01/11/2019] [Indexed: 12/20/2022]
Abstract
Organic (e.g., sugars and amino acids) and inorganic (e.g., K⁺, Na⁺, PO₄2-, and SO₄2-) solutes are transported long-distance throughout plants. Lateral movement of these compounds between the xylem and the phloem, and vice versa, has also been reported in several plant species since the 1930s, and is believed to be important in the overall resource allocation. Studies of Arabidopsis thaliana have provided us with a better knowledge of the anatomical framework in which the lateral transport takes place, and have highlighted the role of specialized vascular and perivascular cells as an interface for solute exchanges. Important breakthroughs have also been made, mainly in Arabidopsis, in identifying some of the proteins involved in the cell-to-cell translocation of solutes, most notably a range of plasma membrane transporters that act in different cell types. Finally, in the future, state-of-art imaging techniques should help to better characterize the lateral transport of these compounds on a cellular level. This review brings the lateral transport of sugars and inorganic solutes back into focus and highlights its importance in terms of our overall understanding of plant resource allocation.
Collapse
Affiliation(s)
- Emilie Aubry
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
| | - Sylvie Dinant
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
| | - Françoise Vilaine
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
| | - Catherine Bellini
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 90183 Umeå, Sweden.
| | - Rozenn Le Hir
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France.
| |
Collapse
|
20
|
Walerowski P, Gündel A, Yahaya N, Truman W, Sobczak M, Olszak M, Rolfe S, Borisjuk L, Malinowski R. Clubroot Disease Stimulates Early Steps of Phloem Differentiation and Recruits SWEET Sucrose Transporters within Developing Galls. THE PLANT CELL 2018; 30:3058-3073. [PMID: 30413655 PMCID: PMC6354258 DOI: 10.1105/tpc.18.00283] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 11/01/2018] [Indexed: 05/20/2023]
Abstract
Successful biotrophic plant pathogens can divert host nutrition toward infection sites. Here we describe how the protist Plasmodiophora brassicae establishes a long-term feeding relationship with its host by stimulating phloem differentiation and phloem-specific expression of sugar transporters within developing galls. Development of galls in infected Arabidopsis (Arabidopsis thaliana) plants is accompanied by stimulation of host BREVIS RADIX, COTYLEDON VASCULAR PATTERN, and OCTOPUS gene expression leading to an increase in phloem complexity. We characterized how the arrest of this developmental reprogramming influences both the host and the invading pathogen. Furthermore, we found that infection leads to phloem-specific accumulation of SUGARS WILL EVENTUALLY BE EXPORTED TRANSPORTERS11 and 12 facilitating local distribution of sugars toward the pathogen. Utilizing Fourier-transform infrared microspectroscopy to monitor spatial distribution of carbohydrates, we found that infection leads to the formation of a strong physiological sink at the site of infection. High resolution metabolic and structural imaging of sucrose distributions revealed that sweet11 sweet12 double mutants are impaired in sugar transport toward the pathogen, delaying disease progression. This work highlights the importance of precise regulation of sugar partitioning for plant-pathogen interactions and the dependence of P brassicae's performance on its capacity to induce a phloem sink at the feeding site.
Collapse
Affiliation(s)
- Piotr Walerowski
- Department of Integrative Plant Biology, Institute of Plant Genetics of the Polish Academy of Sciences, 60-479 Poznań, Poland
| | - André Gündel
- Leibniz Institute of Plant Genetics and Crop Plant Research, D-06466 Stadt Seeland, Germany
| | - Nazariyah Yahaya
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - William Truman
- Department of Integrative Plant Biology, Institute of Plant Genetics of the Polish Academy of Sciences, 60-479 Poznań, Poland
| | - Mirosław Sobczak
- Department of Botany, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Marcin Olszak
- Department of Integrative Plant Biology, Institute of Plant Genetics of the Polish Academy of Sciences, 60-479 Poznań, Poland
| | - Stephen Rolfe
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Ljudmilla Borisjuk
- Leibniz Institute of Plant Genetics and Crop Plant Research, D-06466 Stadt Seeland, Germany
| | - Robert Malinowski
- Department of Integrative Plant Biology, Institute of Plant Genetics of the Polish Academy of Sciences, 60-479 Poznań, Poland
| |
Collapse
|