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de Carvalho-Niebel F, Fournier J, Becker A, Marín Arancibia M. Cellular insights into legume root infection by rhizobia. CURRENT OPINION IN PLANT BIOLOGY 2024; 81:102597. [PMID: 39067084 DOI: 10.1016/j.pbi.2024.102597] [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: 04/30/2024] [Revised: 06/08/2024] [Accepted: 06/11/2024] [Indexed: 07/30/2024]
Abstract
Legume plants establish an endosymbiosis with nitrogen-fixing rhizobia bacteria, which are taken up from the environment anew by each host generation. This requires a dedicated genetic program on the host side to control microbe invasion, involving coordinated reprogramming of host cells to create infection structures that facilitate inward movement of the symbiont. Infection initiates in the epidermis, with different legumes utilizing distinct strategies for crossing this cell layer, either between cells (intercellular infection) or transcellularly (infection thread infection). Recent discoveries on the plant side using fluorescent-based imaging approaches have illuminated the spatiotemporal dynamics of infection, underscoring the importance of investigating this process at the dynamic single-cell level. Extending fluorescence-based live-dynamic approaches to the bacterial partner opens the exciting prospect of learning how individual rhizobia reprogram from rhizospheric to a host-confined state during early root infection.
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Affiliation(s)
| | - Joëlle Fournier
- LIPME, INRAE, CNRS, Université de Toulouse, 31326, Castanet-Tolosan, France
| | - Anke Becker
- Center for Synthetic Microbiology (SYNMIKRO), Philipps-Universität Marburg, D-35032, Marburg, Germany; Department of Biology, Philipps-Universität Marburg, D-35032, Marburg, Germany
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2
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Pinto SC, Leong WH, Tan H, McKee L, Prevost A, Ma C, Shirley NJ, Petrella R, Yang X, Koltunow AM, Bulone V, Kanaoka MM, Higashyiama T, Coimbra S, Tucker MR. Germline β-1,3-glucan deposits are required for female gametogenesis in Arabidopsis thaliana. Nat Commun 2024; 15:5875. [PMID: 38997266 PMCID: PMC11245613 DOI: 10.1038/s41467-024-50143-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 06/28/2024] [Indexed: 07/14/2024] Open
Abstract
Correct regulation of intercellular communication is a fundamental requirement for cell differentiation. In Arabidopsis thaliana, the female germline differentiates from a single somatic ovule cell that becomes encased in β-1,3-glucan, a water insoluble polysaccharide implicated in limiting pathogen invasion, regulating intercellular trafficking in roots, and promoting pollen development. Whether β-1,3-glucan facilitates germline isolation and development has remained contentious, since limited evidence is available to support a functional role. Here, transcriptional profiling of adjoining germline and somatic cells revealed differences in gene expression related to β-1,3-glucan metabolism and signalling through intercellular channels (plasmodesmata). Dominant expression of a β-1,3-glucanase in the female germline transiently perturbed β-1,3-glucan deposits, allowed intercellular movement of tracer molecules, and led to changes in germline gene expression and histone marks, eventually leading to termination of germline development. Our findings indicate that germline β-1,3-glucan fulfils a functional role in the ovule by insulating the primary germline cell, and thereby determines the success of downstream female gametogenesis.
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Affiliation(s)
- Sara C Pinto
- LAQV REQUIMTE, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, rua do Campo Alegre s/n, 4169-007, Porto, Portugal
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Weng Herng Leong
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Urrbrae, SA, 5064, Australia
| | - Hweiting Tan
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Urrbrae, SA, 5064, Australia
| | - Lauren McKee
- Department of Chemistry, Division of Glycoscience, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Amelie Prevost
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Urrbrae, SA, 5064, Australia
| | - Chao Ma
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
| | - Neil J Shirley
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Urrbrae, SA, 5064, Australia
| | - Rosanna Petrella
- Dipartimento di Bioscienze, Università Degli Studi di Milano, Via Celoria 26, 20133, Milan, Italy
| | - Xiujuan Yang
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
| | - Anna M Koltunow
- Centre for Crop Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Vincent Bulone
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Australian Research Council Centre of Excellence in Plant Cell Walls, University of Adelaide, Urrbrae, SA, 5064, Australia
- Department of Chemistry, Division of Glycoscience, KTH Royal Institute of Technology, Stockholm, Sweden
- College of Medicine and Public Health, Flinders University, Bedford Park Campus, Sturt Road, Bedford Park, SA, 5042, Australia
| | - Masahiro M Kanaoka
- Institute of Transformative Bio-Molecules, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan
- Faculty of Bioresource Sciences, Prefectural University of Hiroshima, 5562 Nanatsuka-cho, Shobara City, Hiroshima, 727-0023, Japan
| | - Tetsuya Higashyiama
- Institute of Transformative Bio-Molecules, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Sílvia Coimbra
- LAQV REQUIMTE, Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Matthew R Tucker
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia.
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Bayer EM, Benitez-Alfonso Y. Plasmodesmata: Channels Under Pressure. ANNUAL REVIEW OF PLANT BIOLOGY 2024; 75:291-317. [PMID: 38424063 DOI: 10.1146/annurev-arplant-070623-093110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Multicellularity has emerged multiple times in evolution, enabling groups of cells to share a living space and reducing the burden of solitary tasks. While unicellular organisms exhibit individuality and independence, cooperation among cells in multicellular organisms brings specialization and flexibility. However, multicellularity also necessitates intercellular dependence and relies on intercellular communication. In plants, this communication is facilitated by plasmodesmata: intercellular bridges that allow the direct (cytoplasm-to-cytoplasm) transfer of information between cells. Plasmodesmata transport essential molecules that regulate plant growth, development, and stress responses. They are embedded in the extracellular matrix but exhibit flexibility, adapting intercellular flux to meet the plant's needs.In this review, we delve into the formation and functionality of plasmodesmata and examine the capacity of the plant communication network to respond to developmental and environmental cues. We illustrate how environmental pressure shapes cellular interactions and aids the plant in adapting its growth.
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Affiliation(s)
- Emmanuelle M Bayer
- Laboratoire de Biogenèse Membranaire (LBM), CNRS UMR5200, Université de Bordeaux, Villenave D'Ornon, France;
| | - Yoselin Benitez-Alfonso
- School of Biology, Centre for Plant Sciences, and Astbury Centre, University of Leeds, Leeds, United Kingdom;
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4
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Burch-Smith TM. The varied forms and functions of plasmodesmata. THE NEW PHYTOLOGIST 2024; 243:5-6. [PMID: 38708440 DOI: 10.1111/nph.19794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
This article is a Commentary on Tee & Faulkner (2024), 243: 32–47.
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5
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Tee EE, Faulkner C. Plasmodesmata and intercellular molecular traffic control. THE NEW PHYTOLOGIST 2024; 243:32-47. [PMID: 38494438 DOI: 10.1111/nph.19666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 02/13/2024] [Indexed: 03/19/2024]
Abstract
Plasmodesmata are plasma membrane-lined connections that join plant cells to their neighbours, establishing an intercellular cytoplasmic continuum through which molecules can travel between cells, tissues, and organs. As plasmodesmata connect almost all cells in plants, their molecular traffic carries information and resources across a range of scales, but dynamic control of plasmodesmal aperture can change the possible domains of molecular exchange under different conditions. Plasmodesmal aperture is controlled by specialised signalling cascades accommodated in spatially discrete membrane and cell wall domains. Thus, the composition of plasmodesmata defines their capacity for molecular trafficking. Further, their shape and density can likewise define trafficking capacity, with the cell walls between different cell types hosting different numbers and forms of plasmodesmata to drive molecular flux in physiologically important directions. The molecular traffic that travels through plasmodesmata ranges from small metabolites through to proteins, and possibly even larger mRNAs. Smaller molecules are transmitted between cells via passive mechanisms but how larger molecules are efficiently trafficked through plasmodesmata remains a key question in plasmodesmal biology. How plasmodesmata are formed, the shape they take, what they are made of, and what passes through them regulate molecular traffic through plants, underpinning a wide range of plant physiology.
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Affiliation(s)
- Estee E Tee
- Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Christine Faulkner
- Cell and Developmental Biology, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
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Liu J, Fan Y, Liu Y, He M, Sun Y, Zheng Q, Mi L, Liu J, Liu W, Tang N, Zhao X, Hu Z, Guo S, Yan D. APP1/NTL9-CalS8 module ensures proper phloem differentiation by stabilizing callose accumulation and symplastic communication. THE NEW PHYTOLOGIST 2024; 242:154-169. [PMID: 38375601 DOI: 10.1111/nph.19617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/04/2024] [Indexed: 02/21/2024]
Abstract
Phloem sieve elements (PSE), the primary conduits collaborating with neighboring phloem pole pericycle (PPP) cells to facilitate unloading in Arabidopsis roots, undergo a series of developmental stages before achieving maturation and functionality. However, the mechanism that maintains the proper progression of these differentiation stages remains largely unknown. We identified a gain-of-function mutant altered phloem pole pericycle 1 Dominant (app1D), producing a truncated, nuclear-localized active form of NAC with Transmembrane Motif 1-like (NTL9). This mutation leads to ectopic expression of its downstream target CALLOSE SYNTHASE 8 (CalS8), thereby inducing callose accumulation, impeding SE differentiation, impairing phloem transport, and inhibiting root growth. The app1D phenotype could be reproduced by blocking the symplastic channels of cells within APP1 expression domain in wild-type (WT) roots. The WT APP1 is primarily membrane-tethered and dormant in the root meristem cells but entries into the nucleus in several cells in PPP near the unloading region, and this import is inhibited by blocking the symplastic intercellular transport in differentiating SE. Our results suggest a potential maintenance mechanism involving an APP1-CalS8 module, which induces CalS8 expression and modulates symplastic communication, and the proper activation of this module is crucial for the successful differentiation of SE in the Arabidopsis root.
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Affiliation(s)
- Jie Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Yongxiao Fan
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Yao Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Meiqing He
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Yanke Sun
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Qi Zheng
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Lingyu Mi
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Junzhong Liu
- Center for Life Sciences, School of Life Sciences, State Key Laboratory of Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650500, China
| | - Wencheng Liu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Ning Tang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Xiang Zhao
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Zhubing Hu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Siyi Guo
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
| | - Dawei Yan
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Academy for Advanced Interdisciplinary Studies, Henan University, Kaifeng, 475004, China
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7
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Lepetit M, Brouquisse R. Control of the rhizobium-legume symbiosis by the plant nitrogen demand is tightly integrated at the whole plant level and requires inter-organ systemic signaling. FRONTIERS IN PLANT SCIENCE 2023; 14:1114840. [PMID: 36968361 PMCID: PMC10033964 DOI: 10.3389/fpls.2023.1114840] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Symbiotic nodules formed on legume roots with rhizobia fix atmospheric N2. Bacteria reduce N2 to NH4 + that is assimilated into amino acids by the plant. In return, the plant provides photosynthates to fuel the symbiotic nitrogen fixation. Symbiosis is tightly adjusted to the whole plant nutritional demand and to the plant photosynthetic capacities, but regulatory circuits behind this control remain poorly understood. The use of split-root systems combined with biochemical, physiological, metabolomic, transcriptomic, and genetic approaches revealed that multiple pathways are acting in parallel. Systemic signaling mechanisms of the plant N demand are required for the control of nodule organogenesis, mature nodule functioning, and nodule senescence. N-satiety/N-deficit systemic signaling correlates with rapid variations of the nodules' sugar levels, tuning symbiosis by C resources allocation. These mechanisms are responsible for the adjustment of plant symbiotic capacities to the mineral N resources. On the one hand, if mineral N can satisfy the plant N demand, nodule formation is inhibited, and nodule senescence is activated. On the other hand, local conditions (abiotic stresses) may impair symbiotic activity resulting in plant N limitation. In these conditions, systemic signaling may compensate the N deficit by stimulating symbiotic root N foraging. In the past decade, several molecular components of the systemic signaling pathways controlling nodule formation have been identified, but a major challenge remains, that is, to understand their specificity as compared to the mechanisms of non-symbiotic plants that control root development and how they contribute to the whole plant phenotypes. Less is known about the control of mature nodule development and functioning by N and C nutritional status of the plant, but a hypothetical model involving the sucrose allocation to the nodule as a systemic signaling process, the oxidative pentose phosphate pathway, and the redox status as potential effectors of this signaling is emerging. This work highlights the importance of organism integration in plant biology.
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8
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Su C, Zhang G, Rodriguez-Franco M, Hinnenberg R, Wietschorke J, Liang P, Yang W, Uhler L, Li X, Ott T. Transcellular progression of infection threads in Medicago truncatula roots is associated with locally confined cell wall modifications. Curr Biol 2023; 33:533-542.e5. [PMID: 36657449 PMCID: PMC9937034 DOI: 10.1016/j.cub.2022.12.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 11/18/2022] [Accepted: 12/20/2022] [Indexed: 01/19/2023]
Abstract
The root nodule symbiosis with its global impact on nitrogen fertilization of soils is characterized by an intracellular colonization of legume roots by rhizobia. Although the symbionts are initially taken up by morphologically adapted root hairs, rhizobia persistently progress within a membrane-confined infection thread through several root cortical and later nodular cell layers. Throughout this transcellular passaging, rhizobia have to repeatedly pass host plasma membranes and cell walls. Here, we investigated this essential process and describe the concerted action of one of the symbiosis-specific pectin methyl esterases (SyPME1) and the nodulation pectate lyase (NPL) at the infection thread and transcellular passage sites. Their coordinated function mediates spatially confined pectin alterations in the cell-cell interface that result in the establishment of an apoplastic compartment where bacteria are temporarily released into and taken up from the subjacent cell. This process allows successful intracellular progression of infection threads through the entire root cortical tissue.
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Affiliation(s)
- Chao Su
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany.
| | - Guofeng Zhang
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | | | - Rosula Hinnenberg
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Jenny Wietschorke
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Pengbo Liang
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; State Key Laboratory of Plant Physiology and Biochemistry, MOA Key Laboratory of Soil Microbiology, and Rhizobium Research Center, College of Biological Sciences, China Agricultural University, Beijing 100193, P.R. China
| | - Wei Yang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Hongshan District, Wuhan 430070, Hubei, P.R. China
| | - Leonard Uhler
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
| | - Xia Li
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Hongshan District, Wuhan 430070, Hubei, P.R. China
| | - Thomas Ott
- Cell Biology, Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany; CIBSS - Centre of Integrative Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany.
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9
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German L, Yeshvekar R, Benitez‐Alfonso Y. Callose metabolism and the regulation of cell walls and plasmodesmata during plant mutualistic and pathogenic interactions. PLANT, CELL & ENVIRONMENT 2023; 46:391-404. [PMID: 36478232 PMCID: PMC10107507 DOI: 10.1111/pce.14510] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/21/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Cell walls are essential for plant growth and development, providing support and protection from external environments. Callose is a glucan that accumulates in specialized cell wall microdomains including around intercellular pores called plasmodesmata. Despite representing a small percentage of the cell wall (~0.3% in the model plant Arabidopsis thaliana), callose accumulation regulates important biological processes such as phloem and pollen development, cell division, organ formation, responses to pathogenic invasion and to changes in nutrients and toxic metals in the soil. Callose accumulation modifies cell wall properties and restricts plasmodesmata aperture, affecting the transport of signaling proteins and RNA molecules that regulate plant developmental and environmental responses. Although the importance of callose, at and outside plasmodesmata cell walls, is widely recognized, the underlying mechanisms controlling changes in its synthesis and degradation are still unresolved. In this review, we explore the most recent literature addressing callose metabolism with a focus on the molecular factors affecting callose accumulation in response to mutualistic symbionts and pathogenic elicitors. We discuss commonalities in the signaling pathways, identify research gaps and highlight opportunities to target callose in the improvement of plant responses to beneficial versus pathogenic microbes.
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Affiliation(s)
- Liam German
- Centre for Plant Sciences, School of BiologyUniversity of LeedsLeedsUK
| | - Richa Yeshvekar
- Centre for Plant Sciences, School of BiologyUniversity of LeedsLeedsUK
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10
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Barmukh R, Roorkiwal M, Garg V, Khan AW, German L, Jaganathan D, Chitikineni A, Kholova J, Kudapa H, Sivasakthi K, Samineni S, Kale SM, Gaur PM, Sagurthi SR, Benitez‐Alfonso Y, Varshney RK. Genetic variation in CaTIFY4b contributes to drought adaptation in chickpea. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:1701-1715. [PMID: 35534989 PMCID: PMC9398337 DOI: 10.1111/pbi.13840] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/28/2022] [Indexed: 05/26/2023]
Abstract
Chickpea production is vulnerable to drought stress. Identifying the genetic components underlying drought adaptation is crucial for enhancing chickpea productivity. Here, we present the fine mapping and characterization of 'QTL-hotspot', a genomic region controlling chickpea growth with positive consequences on crop production under drought. We report that a non-synonymous substitution in the transcription factor CaTIFY4b regulates seed weight and organ size in chickpea. Ectopic expression of CaTIFY4b in Medicago truncatula enhances root growth under water deficit. Our results suggest that allelic variation in 'QTL-hotspot' improves pre-anthesis water use, transpiration efficiency, root architecture and canopy development, enabling high-yield performance under terminal drought conditions. Gene expression analysis indicated that CaTIFY4b may regulate organ size under water deficit by modulating the expression of GRF-INTERACTING FACTOR1 (GIF1), a transcriptional co-activator of Growth-Regulating Factors. Taken together, our study offers new insights into the role of CaTIFY4b and on diverse physiological and molecular mechanisms underpinning chickpea growth and production under specific drought scenarios.
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Affiliation(s)
- Rutwik Barmukh
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
- Department of GeneticsOsmania UniversityHyderabadIndia
| | - Manish Roorkiwal
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
- Khalifa Center for Genetic Engineering and BiotechnologyUnited Arab Emirates UniversityAl‐AinUnited Arab Emirates
- The UWA Institute of AgricultureThe University of Western AustraliaPerthWestern AustraliaAustralia
| | - Vanika Garg
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Aamir W. Khan
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Liam German
- Centre for Plant ScienceSchool of BiologyUniversity of LeedsLeedsUK
| | - Deepa Jaganathan
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Annapurna Chitikineni
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Jana Kholova
- Crop Physiology and ModellingInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Himabindu Kudapa
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Kaliamoorthy Sivasakthi
- Crop Physiology and ModellingInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Srinivasan Samineni
- Crop BreedingInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Sandip M. Kale
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Pooran M. Gaur
- The UWA Institute of AgricultureThe University of Western AustraliaPerthWestern AustraliaAustralia
- Crop BreedingInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | | | | | - Rajeev K. Varshney
- Centre of Excellence in Genomics and Systems BiologyInternational Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
- The UWA Institute of AgricultureThe University of Western AustraliaPerthWestern AustraliaAustralia
- Murdoch’s Centre for Crop & Food InnovationState Agricultural Biotechnology CentreFood Futures InstituteMurdoch UniversityMurdochWestern AustraliaAustralia
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11
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Cao HR, Peng WT, Nie MM, Bai S, Chen CQ, Liu Q, Guo ZL, Liao H, Chen ZC. Carbon-nitrogen trading in symbiotic nodules depends on magnesium import. Curr Biol 2022; 32:4337-4349.e5. [PMID: 36055239 DOI: 10.1016/j.cub.2022.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/22/2022] [Accepted: 08/10/2022] [Indexed: 11/26/2022]
Abstract
Symbiotic nitrogen fixation provides large amounts of nitrogen for global agricultural systems with little environmental or economic costs. The basis of symbiosis is the nutrient exchange occurring between legumes and rhizobia, but key regulators controlling nutrient exchange are largely unknown. Here, we reveal that magnesium (Mg), an important nutrient factor that preferentially accumulates in inner cortical cells of soybean nodules, shows the most positive correlation with nodule carbon (C) import and nitrogen (N) export. We further identified a pair of Mg transporter genes, GmMGT4 and GmMGT5, that are specifically expressed in the nodule cortex, modulating both nodule Mg import and C-N transport processes. The GmMGT4&5-dependent Mg import activates the activity of a plasmodesmata-located β-1,3-glucanase GmBG2 and consequently keeps plasmodesmata permeable for C-N transport in nodule inner cortical cells. Our studies discovered an important regulating pathway for host plants fine-tuning nodule C-N trading to achieve optimal growth, which may be helpful for optimizing nutrient management for soybean production.
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Affiliation(s)
- Hong-Rui Cao
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wen-Ting Peng
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Miao-Miao Nie
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuang Bai
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chun-Qu Chen
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qian Liu
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zi-Long Guo
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hong Liao
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhi-Chang Chen
- Root Biology Center, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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12
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Legume plant defenses and nutrients mediate indirect interactions between soil rhizobia and chewing herbivores. Basic Appl Ecol 2022. [DOI: 10.1016/j.baae.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Kirk P, Amsbury S, German L, Gaudioso-Pedraza R, Benitez-Alfonso Y. A comparative meta-proteomic pipeline for the identification of plasmodesmata proteins and regulatory conditions in diverse plant species. BMC Biol 2022; 20:128. [PMID: 35655273 PMCID: PMC9164936 DOI: 10.1186/s12915-022-01331-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 05/16/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND A major route for cell-to-cell signalling in plants is mediated by cell wall-embedded pores termed plasmodesmata forming the symplasm. Plasmodesmata regulate the plant development and responses to the environment; however, our understanding of what factors or regulatory cues affect their structure and permeability is still limited. In this paper, a meta-analysis was carried out for the identification of conditions affecting plasmodesmata transport and for the in silico prediction of plasmodesmata proteins in species for which the plasmodesmata proteome has not been experimentally determined. RESULTS Using the information obtained from experimental proteomes, an analysis pipeline (named plasmodesmata in silico proteome 1 or PIP1) was developed to rapidly generate candidate plasmodesmata proteomes for 22 plant species. Using the in silico proteomes to interrogate published transcriptomes, gene interaction networks were identified pointing to conditions likely affecting plasmodesmata transport capacity. High salinity, drought and osmotic stress regulate the expression of clusters enriched in genes encoding plasmodesmata proteins, including those involved in the metabolism of the cell wall polysaccharide callose. Experimental determinations showed restriction in the intercellular transport of the symplasmic reporter GFP and enhanced callose deposition in Arabidopsis roots exposed to 75-mM NaCl and 3% PEG (polyethylene glycol). Using PIP1 and transcriptome meta-analyses, candidate plasmodesmata proteins for the legume Medicago truncatula were generated, leading to the identification of Medtr1g073320, a novel receptor-like protein that localises at plasmodesmata. Expression of Medtr1g073320 affects callose deposition and the root response to infection with the soil-borne bacteria rhizobia in the presence of nitrate. CONCLUSIONS Our study shows that combining proteomic meta-analysis and transcriptomic data can be a valuable tool for the identification of new proteins and regulatory mechanisms affecting plasmodesmata function. We have created the freely accessible pipeline PIP1 as a resource for the screening of experimental proteomes and for the in silico prediction of PD proteins in diverse plant species.
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Affiliation(s)
- Philip Kirk
- Centre for Plant Science, School of Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Sam Amsbury
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Sheffield, S10 2TN, UK
| | - Liam German
- Centre for Plant Science, School of Biology, University of Leeds, Leeds, LS2 9JT, UK
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14
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Auxin methylation by IAMT1, duplicated in the legume lineage, promotes root nodule development in Lotus japonicus. Proc Natl Acad Sci U S A 2022; 119:e2116549119. [PMID: 35235457 PMCID: PMC8915983 DOI: 10.1073/pnas.2116549119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Significance IAA carboxyl methyltransferase 1 (IAMT1) converts auxin (IAA) into its methyl ester (MeIAA). IAMT1 is reportedly critical for shoot development of the nonsymbiotic plant Arabidopsis. On the other hand, the function of IAMT1 in roots is unknown. Here, we found that IAMT1 is duplicated in the legume lineage, which evolved root nodule symbiosis. In the model legume Lotus japonicus, one of two paralogs (named IAMT1a) was mainly expressed in root epidermis, but its function is required in the adjacent cell layer, root cortex, where it promotes nodule development. Application of MeIAA, but not IAA, significantly induced NIN, a master regulator of nodule development, without rhizobia. These findings illuminate our understanding of intertissue communication acquired during evolution of root nodule symbiosis.
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15
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Miras M, Pottier M, Schladt TM, Ejike JO, Redzich L, Frommer WB, Kim JY. Plasmodesmata and their role in assimilate translocation. JOURNAL OF PLANT PHYSIOLOGY 2022; 270:153633. [PMID: 35151953 DOI: 10.1016/j.jplph.2022.153633] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
During multicellularization, plants evolved unique cell-cell connections, the plasmodesmata (PD). PD of angiosperms are complex cellular domains, embedded in the cell wall and consisting of multiple membranes and a large number of proteins. From the beginning, it had been assumed that PD provide passage for a wide range of molecules, from ions to metabolites and hormones, to RNAs and even proteins. In the context of assimilate allocation, it has been hypothesized that sucrose produced in mesophyll cells is transported via PD from cell to cell down a concentration gradient towards the phloem. Entry into the sieve element companion cell complex (SECCC) is then mediated on three potential routes, depending on the species and conditions, - either via diffusion across PD, after conversion to raffinose via PD using a polymer trap mechanism, or via a set of transporters which secrete sucrose from one cell and secondary active uptake into the SECCC. Multiple loading mechanisms can likely coexist. We here review the current knowledge regarding photoassimilate transport across PD between cells as a prerequisite for translocation from leaves to recipient organs, in particular roots and developing seeds. We summarize the state-of-the-art in protein composition, structure, transport mechanism and regulation of PD to apprehend their functions in carbohydrate allocation. Since many aspects of PD biology remain elusive, we highlight areas that require new approaches and technologies to advance our understanding of these enigmatic and important cell-cell connections.
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Affiliation(s)
- Manuel Miras
- Institute for Molecular Physiology, Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
| | - Mathieu Pottier
- Institute for Molecular Physiology, Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
| | - T Moritz Schladt
- Institute for Molecular Physiology, Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
| | - J Obinna Ejike
- Institute for Molecular Physiology and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
| | - Laura Redzich
- Institute for Molecular Physiology and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
| | - Wolf B Frommer
- Institute for Molecular Physiology and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany; Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya, 464-8601, Japan.
| | - Ji-Yun Kim
- Institute for Molecular Physiology and Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-University Düsseldorf, Düsseldorf, 40225, Germany
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16
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Huang C, Mutterer J, Heinlein M. In Vivo Aniline Blue Staining and Semiautomated Quantification of Callose Deposition at Plasmodesmata. Methods Mol Biol 2022; 2457:151-165. [PMID: 35349138 DOI: 10.1007/978-1-0716-2132-5_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The deposition and turnover of callose (beta-1,3 glucan polymer) in the cell wall surrounding the neck regions of plasmodesmata (PD) controls the cell-to-cell diffusion rate of molecules and, therefore, plays an important role in the regulation of intercellular communication in plants.Here we describe a simple and fast in vivo staining procedure for the imaging and quantification of callose at PD. We also introduce calloseQuant, a plug-in for semiautomated image analysis and non-biased quantification of callose levels at PD using ImageJ.
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Affiliation(s)
- Caiping Huang
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Jerôme Mutterer
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Manfred Heinlein
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France.
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17
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Tee EE, Samwald S, Faulkner C. Quantification of Cell-to-Cell Connectivity Using Particle Bombardment. Methods Mol Biol 2022; 2457:263-272. [PMID: 35349146 DOI: 10.1007/978-1-0716-2132-5_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plant cells are connected by cytoplasmic bridges called plasmodesmata. Plasmodesmata are lined by the plasma membrane, essentially forming tunnels that directly connect the cytoplasm of adjacent cells through which soluble molecules can move from cell to cell. This cell-to-cell mobility is underpinned by cytoplasmic advection and diffusion in a manner dependent on molecular size. This movement of molecules is regulated by the aperture of plasmodesmata. GREEN FLUORESCENT PROTEIN (GFP) is a 27 kDa soluble protein that can move passively between cells via plasmodesmata. Thus, it serves as an ideal probe to assess plasmodesmal aperture. GFP can be transgenically produced in single cells by microprojectile bombardment-mediated transformation, and its cell-to-cell mobility can be measured by live-cell imaging and counting the number of cells (or cell layers) to which it has moved. Thus, the number of cells in which GFP is visible serves as a measure of plasmodesmal aperture and functional cell-to-cell connectivity. Here we present methods for microprojectile bombardment of GFP into leaf epidermal cells and statistical analysis of resulting data.
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Affiliation(s)
- Estee E Tee
- Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, UK
| | - Sebastian Samwald
- Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, UK
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18
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Abstract
Plasmodesmata are nanoscale cell wall channels connecting neighboring cells in plants. Intercellular trafficking of molecules via plasmodesmata plays important roles in various developmental processes and stress responses. The turnover of callose, a β-1,3-glucan polysaccharide depositing in the cell wall around plasmodesmata, controls the plasmodesmal permeability and symplasmic transport. Here, we describe a protocol for the spatiotemporally controlled induction of callose synthesis and plasmodesmata closure using the cals3m system. In this system, cals3m, a mutant CALLOSE SYNTHASE 3 (CALS3) gene, is driven by inducible tissue-specific promoters of interest. After appropriate induction by 17-β-estradiol, callose is overproduced within the corresponding specific domains, resulting in temporal closure of plasmodesmata at the cell-cell interfaces. This approach can be used to validate and dissect the function of plasmodesmata-mediated symplasmic communications.
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Affiliation(s)
- Dawei Yan
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China.
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19
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Huang C, Heinlein M. Function of Plasmodesmata in the Interaction of Plants with Microbes and Viruses. Methods Mol Biol 2022; 2457:23-54. [PMID: 35349131 DOI: 10.1007/978-1-0716-2132-5_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plasmodesmata (PD) are gated plant cell wall channels that allow the trafficking of molecules between cells and play important roles during plant development and in the orchestration of cellular and systemic signaling responses during interactions of plants with the biotic and abiotic environment. To allow gating, PD are equipped with signaling platforms and enzymes that regulate the size exclusion limit (SEL) of the pore. Plant-interacting microbes and viruses target PD with specific effectors to enhance their virulence and are useful probes to study PD functions.
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Affiliation(s)
- Caiping Huang
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| | - Manfred Heinlein
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France.
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20
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Booth NJ, Smith PMC, Ramesh SA, Day DA. Malate Transport and Metabolism in Nitrogen-Fixing Legume Nodules. Molecules 2021; 26:6876. [PMID: 34833968 PMCID: PMC8618214 DOI: 10.3390/molecules26226876] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/22/2022] Open
Abstract
Legumes form a symbiosis with rhizobia, a soil bacterium that allows them to access atmospheric nitrogen and deliver it to the plant for growth. Biological nitrogen fixation occurs in specialized organs, termed nodules, that develop on the legume root system and house nitrogen-fixing rhizobial bacteroids in organelle-like structures termed symbiosomes. The process is highly energetic and there is a large demand for carbon by the bacteroids. This carbon is supplied to the nodule as sucrose, which is broken down in nodule cells to organic acids, principally malate, that can then be assimilated by bacteroids. Sucrose may move through apoplastic and/or symplastic routes to the uninfected cells of the nodule or be directly metabolised at the site of import within the vascular parenchyma cells. Malate must be transported to the infected cells and then across the symbiosome membrane, where it is taken up by bacteroids through a well-characterized dct system. The dicarboxylate transporters on the infected cell and symbiosome membranes have been functionally characterized but remain unidentified. Proteomic and transcriptomic studies have revealed numerous candidates, but more work is required to characterize their function and localise the proteins in planta. GABA, which is present at high concentrations in nodules, may play a regulatory role, but this remains to be explored.
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Affiliation(s)
- Nicholas J. Booth
- College of Science & Engineering, Flinders University, GPO Box 5100, Adelaide, SA 5001, Australia; (N.J.B.); (S.A.R.)
| | | | - Sunita A. Ramesh
- College of Science & Engineering, Flinders University, GPO Box 5100, Adelaide, SA 5001, Australia; (N.J.B.); (S.A.R.)
| | - David A. Day
- College of Science & Engineering, Flinders University, GPO Box 5100, Adelaide, SA 5001, Australia; (N.J.B.); (S.A.R.)
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21
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Krönauer C, Radutoiu S. Understanding Nod factor signalling paves the way for targeted engineering in legumes and non-legumes. CURRENT OPINION IN PLANT BIOLOGY 2021; 62:102026. [PMID: 33684882 DOI: 10.1016/j.pbi.2021.102026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/31/2021] [Accepted: 02/05/2021] [Indexed: 05/06/2023]
Abstract
Legumes evolved LysM receptors for recognition of rhizobial Nod factors and initiation of signalling pathways for nodule organogenesis and infection. Intracellularly hosted bacteria are supplied with carbon resources in exchange for fixed nitrogen. Nod factor recognition is crucial for initial signalling, but is reiterated in growing roots initiating novel symbiotic events, and in developing primordia until symbiosis is well-established. Understanding how this signalling coordinates the entire process from cellular to plant level is key for de novo engineering in non-legumes and for improved efficiency in legumes. Here we discuss how recent studies bring new insights into molecular determinants of specificity and sensitivity in Nod factor signalling in legumes, and present some of the unknowns and challenges for engineering.
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Affiliation(s)
- Christina Krönauer
- Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds vej 10, 8000C, Aarhus, Denmark
| | - Simona Radutoiu
- Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds vej 10, 8000C, Aarhus, Denmark.
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22
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Ghahremani M, MacLean AM. Home sweet home: how mutualistic microbes modify root development to promote symbiosis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2275-2287. [PMID: 33369646 DOI: 10.1093/jxb/eraa607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
Post-embryonic organogenesis has uniquely equipped plants to become developmentally responsive to their environment, affording opportunities to remodel organism growth and architecture to an extent not possible in other higher order eukaryotes. It is this developmental plasticity that makes the field of plant-microbe interactions an exceptionally fascinating venue in which to study symbiosis. This review article describes the various ways in which mutualistic microbes alter the growth, development, and architecture of the roots of their plant hosts. We first summarize general knowledge of root development, and then examine how association of plants with beneficial microbes affects these processes. Working our way inwards from the epidermis to the pericycle, this review dissects the cell biology and molecular mechanisms underlying plant-microbe interactions in a tissue-specific manner. We examine the ways in which microbes gain entry into the root, and modify this specialized organ for symbiont accommodation, with a particular emphasis on the colonization of root cortical cells. We present significant advances in our understanding of root-microbe interactions, and conclude our discussion by identifying questions pertinent to root endosymbiosis that at present remain unresolved.
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Affiliation(s)
- Mina Ghahremani
- Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Canada
| | - Allyson M MacLean
- Department of Biology, University of Ottawa, 30 Marie Curie, Ottawa, Canada
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23
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Tribble CM, Martínez-Gómez J, Alzate-Guarín F, Rothfels CJ, Specht CD. Comparative transcriptomics of a monocotyledonous geophyte reveals shared molecular mechanisms of underground storage organ formation. Evol Dev 2021; 23:155-173. [PMID: 33465278 DOI: 10.1111/ede.12369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/25/2020] [Accepted: 12/01/2020] [Indexed: 11/27/2022]
Abstract
Many species from across the vascular plant tree-of-life have modified standard plant tissues into tubers, bulbs, corms, and other underground storage organs (USOs), unique innovations which allow these plants to retreat underground. Our ability to understand the developmental and evolutionary forces that shape these morphologies is limited by a lack of studies on certain USOs and plant clades. We take a comparative transcriptomics approach to characterizing the molecular mechanisms of tuberous root formation in Bomarea multiflora (Alstroemeriaceae) and compare these mechanisms to those identified in other USOs across diverse plant lineages; B. multiflora fills a key gap in our understanding of USO molecular development as the first monocot with tuberous roots to be the focus of this kind of research. We sequenced transcriptomes from the growing tip of four tissue types (aerial shoot, rhizome, fibrous root, and root tuber) of three individuals of B. multiflora. We identified differentially expressed isoforms between tuberous and non-tuberous roots and tested the expression of a priori candidate genes implicated in underground storage in other taxa. We identify 271 genes that are differentially expressed in root tubers versus non-tuberous roots, including genes implicated in cell wall modification, defense response, and starch biosynthesis. We also identify a phosphatidylethanolamine-binding protein, which has been implicated in tuberization signalling in other taxa and, through gene-tree analysis, place this copy in a phylogenetic context. These findings suggest that some similar molecular processes underlie the formation of USOs across flowering plants despite the long evolutionary distances among taxa and non-homologous morphologies (e.g., bulbs vs. tubers). (Plant development, tuberous roots, comparative transcriptomics, geophytes).
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Affiliation(s)
- Carrie M Tribble
- Department of Integrative Biology and, University Herbarium, University of California, Berkeley, California, USA
| | - Jesús Martínez-Gómez
- Department of Integrative Biology and, University Herbarium, University of California, Berkeley, California, USA.,School of Integrative Plant Sciences, Section of Plant Biology and the L.H. Bailey Hortorium, Cornell University, Ithaca, New York, USA
| | - Fernando Alzate-Guarín
- Grupo de Estudios Botánicos (GEOBOTA) and Herbario Universidad de Antioquia (HUA), Facultad de Ciencias Exactas y Naturales, Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
| | - Carl J Rothfels
- Department of Integrative Biology and, University Herbarium, University of California, Berkeley, California, USA
| | - Chelsea D Specht
- School of Integrative Plant Sciences, Section of Plant Biology and the L.H. Bailey Hortorium, Cornell University, Ithaca, New York, USA
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24
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Sarmiento-López LG, López-Meyer M, Sepúlveda-Jiménez G, Cárdenas L, Rodríguez-Monroy M. Arbuscular mycorrhizal symbiosis in Stevia rebaudiana increases trichome development, flavonoid and phenolic compound accumulation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2020.101889] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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25
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Iswanto ABB, Shelake RM, Vu MH, Kim JY, Kim SH. Genome Editing for Plasmodesmal Biology. FRONTIERS IN PLANT SCIENCE 2021; 12:679140. [PMID: 34149780 PMCID: PMC8207191 DOI: 10.3389/fpls.2021.679140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/10/2021] [Indexed: 05/08/2023]
Abstract
Plasmodesmata (PD) are cytoplasmic canals that facilitate intercellular communication and molecular exchange between adjacent plant cells. PD-associated proteins are considered as one of the foremost factors in regulating PD function that is critical for plant development and stress responses. Although its potential to be used for crop engineering is enormous, our understanding of PD biology was relatively limited to model plants, demanding further studies in crop systems. Recently developed genome editing techniques such as Clustered Regularly Interspaced Short Palindromic Repeats/CRISPR associate protein (CRISPR/Cas) might confer powerful approaches to dissect the molecular function of PD components and to engineer elite crops. Here, we assess several aspects of PD functioning to underline and highlight the potential applications of CRISPR/Cas that provide new insight into PD biology and crop improvement.
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Affiliation(s)
- Arya Bagus Boedi Iswanto
- Division of Applied Life Sciences (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Rahul Mahadev Shelake
- Division of Applied Life Sciences (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Minh Huy Vu
- Division of Applied Life Sciences (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
| | - Jae-Yean Kim
- Division of Applied Life Sciences (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
- Division of Applied Life Sciences, Gyeongsang National University, Jinju, South Korea
- Jae-Yean Kim,
| | - Sang Hee Kim
- Division of Applied Life Sciences (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, Jinju, South Korea
- Division of Applied Life Sciences, Gyeongsang National University, Jinju, South Korea
- *Correspondence: Sang Hee Kim,
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26
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Godel-Jedrychowska K, Kulinska-Lukaszek K, Horstman A, Soriano M, Li M, Malota K, Boutilier K, Kurczynska EU. Symplasmic isolation marks cell fate changes during somatic embryogenesis. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2612-2628. [PMID: 31974549 PMCID: PMC7210756 DOI: 10.1093/jxb/eraa041] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 01/22/2020] [Indexed: 05/05/2023]
Abstract
Cell-to-cell signalling is a major mechanism controlling plant morphogenesis. Transport of signalling molecules through plasmodesmata is one way in which plants promote or restrict intercellular signalling over short distances. Plasmodesmata are membrane-lined pores between cells that regulate the intercellular flow of signalling molecules through changes in their size, creating symplasmic fields of connected cells. Here we examine the role of plasmodesmata and symplasmic communication in the establishment of plant cell totipotency, using somatic embryo induction from Arabidopsis explants as a model system. Cell-to-cell communication was evaluated using fluorescent tracers, supplemented with histological and ultrastructural analysis, and correlated with expression of a WOX2 embryo reporter. We showed that embryogenic cells are isolated symplasmically from non-embryogenic cells regardless of the explant type (immature zygotic embryos or seedlings) and inducer system (2,4-dichlorophenoxyacetic acid or the BABY BOOM (BBM) transcription factor), but that the symplasmic domains in different explants differ with respect to the maximum size of molecule capable of moving through the plasmodesmata. Callose deposition in plasmodesmata preceded WOX2 expression in future sites of somatic embryo development, but later was greatly reduced in WOX2-expressing domains. Callose deposition was also associated with a decrease DR5 auxin response in embryogenic tissue. Treatment of explants with the callose biosynthesis inhibitor 2-deoxy-D-glucose supressed somatic embryo formation in all three systems studied, and also blocked the observed decrease in DR5 expression. Together these data suggest that callose deposition at plasmodesmata is required for symplasmic isolation and establishment of cell totipotency in Arabidopsis.
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Affiliation(s)
- Kamila Godel-Jedrychowska
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Katarzyna Kulinska-Lukaszek
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Anneke Horstman
- Bioscience, Wageningen University and Research, AA Wageningen, Netherlands
- Laboratory of Molecular Biology, Wageningen University and Research, AA Wageningen, Netherlands
| | - Mercedes Soriano
- Bioscience, Wageningen University and Research, AA Wageningen, Netherlands
| | - Mengfan Li
- Bioscience, Wageningen University and Research, AA Wageningen, Netherlands
- Laboratory of Molecular Biology, Wageningen University and Research, AA Wageningen, Netherlands
| | - Karol Malota
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in KatowiceKatowice, Poland
| | - Kim Boutilier
- Bioscience, Wageningen University and Research, AA Wageningen, Netherlands
| | - Ewa U Kurczynska
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
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27
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Azarakhsh M, Rumyantsev AM, Lebedeva MA, Lutova LA. Cytokinin biosynthesis genes expressed during nodule organogenesis are directly regulated by the KNOX3 protein in Medicago truncatula. PLoS One 2020; 15:e0232352. [PMID: 32353031 PMCID: PMC7192382 DOI: 10.1371/journal.pone.0232352] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 04/14/2020] [Indexed: 11/20/2022] Open
Abstract
Cytokinin is an important regulator of symbiotic nodule development. Recently, KNOTTED1-LIKE HOMEOBOX 3 transcription factor (TF) was shown to regulate symbiotic nodule development possibly via the activation of cytokinin biosynthesis genes. However, the direct interaction between the KNOX3 TF and its target genes has not been investigated up to date. Here, using EMSA analysis and SPR-based assay, we found that MtKNOX3 homeodomain directly binds to the regulatory sequences of the MtLOG1, MtLOG2, and MtIPT3 genes involved in nodulation in Medicago truncatula. Moreover, we showed that MtLOG2 and MtIPT3 expression patterns partially overlap with MtKNOX3 expression in developing nodules as it was shown by promoter:GUS analysis. Our data suggest that MtKNOX3 TF may directly activate the MtLOG1, MtLOG2, and MtIPT3 genes during nodulation thereby increasing cytokinin biosynthesis in developing nodules.
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Affiliation(s)
- Mahboobeh Azarakhsh
- Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia
- Cell and Molecular Biology Department, Kosar University of Bojnord, Bojnord, North Khorasan Province, Iran
| | - Andrey M Rumyantsev
- Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Maria A Lebedeva
- Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia
| | - Lyudmila A Lutova
- Department of Genetics and Biotechnology, Saint Petersburg State University, Saint Petersburg, Russia
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Ortega-Ortega Y, Carrasco-Castilla J, Juárez-Verdayes MA, Toscano-Morales R, Fonseca-García C, Nava N, Cárdenas L, Quinto C. Actin Depolymerizing Factor Modulates Rhizobial Infection and Nodule Organogenesis in Common Bean. Int J Mol Sci 2020; 21:ijms21061970. [PMID: 32183068 PMCID: PMC7139724 DOI: 10.3390/ijms21061970] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/28/2022] Open
Abstract
Actin plays a critical role in the rhizobium-legume symbiosis. Cytoskeletal rearrangements and changes in actin occur in response to Nod factors secreted by rhizobia during symbiotic interactions with legumes. These cytoskeletal rearrangements are mediated by diverse actin-binding proteins, such as actin depolymerization factors (ADFs). We examined the function of an ADF in the Phaseolus vulgaris-rhizobia symbiotic interaction (PvADFE). PvADFE was preferentially expressed in rhizobia-inoculated roots and nodules. PvADFE promoter activity was associated with root hairs harbouring growing infection threads, cortical cell divisions beneath root hairs, and vascular bundles in mature nodules. Silencing of PvADFE using RNA interference increased the number of infection threads in the transgenic roots, resulting in increased nodule number, nitrogen fixation activity, and average nodule diameter. Conversely, overexpression of PvADFE reduced the nodule number, nitrogen fixation activity, average nodule diameter, as well as NODULE INCEPTION (NIN) and EARLY NODULIN2 (ENOD2) transcript accumulation. Hence, changes in ADFE transcript levels affect rhizobial infection and nodulation, suggesting that ADFE is fine-tuning these processes.
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Affiliation(s)
- Yolanda Ortega-Ortega
- Departamento de Biociencias y Agrobiotecnología, Centro de Investigación en Química Aplicada-CONACYT, Saltillo 25294, Coahuila, Mexico;
| | - Janet Carrasco-Castilla
- Instituto Politécnico Nacional, Centro de Estudios Científicos y Tecnológicos 17 León, León 37358, Guanajuato, Mexico;
| | - Marco A. Juárez-Verdayes
- Departamento de Docencia, Universidad Autónoma Agraria Antonio Narro, Saltillo 25315, Coahuila, Mexico;
| | - Roberto Toscano-Morales
- Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA 95616, USA;
| | - Citlali Fonseca-García
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Noreide Nava
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Luis Cárdenas
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
| | - Carmen Quinto
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, UNAM, Cuernavaca 62210, Morelos, Mexico; (C.F.-G.); (N.N.); (L.C.)
- Correspondence:
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29
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Petit JD, Li ZP, Nicolas WJ, Grison MS, Bayer EM. Dare to change, the dynamics behind plasmodesmata-mediated cell-to-cell communication. CURRENT OPINION IN PLANT BIOLOGY 2020; 53:80-89. [PMID: 31805513 DOI: 10.1016/j.pbi.2019.10.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 06/10/2023]
Abstract
Plasmodesmata pores control the entry and exit of molecules at cell-to-cell boundaries. Hundreds of pores perforate the plant cell wall, connecting cells together and establishing direct cytosolic and membrane continuity. This ability to connect cells in such a way is a hallmark of plant physiology and is thought to have allowed sessile multicellularity in Plantae kingdom. Indeed, plasmodesmata-mediated cell-to-cell signalling is fundamental to many plant-related processes. In fact, there are so many facets of plant biology under the control of plasmodesmata that it is hard to conceive how such tiny structures can do so much. While they provide 'open doors' between cells, they also need to guarantee cellular identities and territories by selectively transporting molecules. Although plasmodesmata operating mode remains difficult to grasp, little by little plant scientists are divulging their secrets. In this review, we highlight novel functions of cell-to-cell signalling and share recent insights into how plasmodesmata structural and molecular signatures confer functional specificity and plasticity to these unique cellular machines.
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Affiliation(s)
- Jules D Petit
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS, Université de Bordeaux, Villenave d'Ornon, France; Laboratoire de Biophysique Moléculaire aux Interfaces, TERRA Research Centre, GX ABT, Université de Liège, Gembloux, Belgium
| | - Ziqiang Patrick Li
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS, Université de Bordeaux, Villenave d'Ornon, France
| | - William J Nicolas
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS, Université de Bordeaux, Villenave d'Ornon, France
| | - Magali S Grison
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS, Université de Bordeaux, Villenave d'Ornon, France
| | - Emmanuelle M Bayer
- Laboratoire de Biogenèse Membranaire, UMR5200 CNRS, Université de Bordeaux, Villenave d'Ornon, France.
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30
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Jimenez-Jimenez S, Santana O, Lara-Rojas F, Arthikala MK, Armada E, Hashimoto K, Kuchitsu K, Salgado S, Aguirre J, Quinto C, Cárdenas L. Differential tetraspanin genes expression and subcellular localization during mutualistic interactions in Phaseolus vulgaris. PLoS One 2019; 14:e0219765. [PMID: 31437164 PMCID: PMC6705802 DOI: 10.1371/journal.pone.0219765] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 07/01/2019] [Indexed: 12/19/2022] Open
Abstract
Arbuscular mycorrhizal fungi and rhizobia association with plants are two of the most successful plant-microbe associations that allow the assimilation of P and N by plants, respectively. These mutualistic interactions require a molecular dialogue, i.e., legume roots exude flavonoids or strigolactones which induce the Nod factors or Myc factors synthesis and secretion from the rhizobia or fungi, respectively. These Nod or Myc factors trigger several responses in the plant root, including calcium oscillations, and reactive oxygen species (ROS). Furthermore, superoxide and H2O2 have emerged as key components that regulate the transitions from proliferation to differentiation in the plant meristems. Similar to the root meristem, the nodule meristem accumulates superoxide and H2O2. Tetraspanins are transmembrane proteins that organize into tetraspanin web regions, where they recruit specific proteins into platforms required for signal transduction, membrane fusion, cell trafficking and ROS generation. Plant tetraspanins are scaffolding proteins associated with root radial patterning, biotic and abiotic stress responses, cell fate determination, and hormonal regulation and recently have been reported as a specific marker of exosomes in animal and plant cells and key players at the site of plant fungal infection. In this study, we conducted transcriptional profiling of the tetraspanin family in common bean (Phaseolus vulgaris L. var. Negro Jamapa) to determine the specific expression patterns and subcellular localization of tetraspanins during nodulation or under mycorrhizal association. Our results demonstrate that the tetraspanins are transcriptionally modulated during the mycorrhizal association, but are also expressed in the infection thread and nodule meristem development. Subcellular localization indicates that tetraspanins have a key role in vesicular trafficking, cell division, and root hair polar growth.
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Affiliation(s)
- Saul Jimenez-Jimenez
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Olivia Santana
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Fernando Lara-Rojas
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Manoj-Kumar Arthikala
- Ciencias Agrogenómicas, Escuela Nacional de Estudios Superiores Unidad León-Universidad Nacional Autónoma de México, León, Guanajuato, México
| | - Elisabeth Armada
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Kenji Hashimoto
- Department of Applied Biological Science, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, Yamazaki, Noda, Chiba, Japan
| | - Sandra Salgado
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Jesús Aguirre
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Carmen Quinto
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Luis Cárdenas
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
- * E-mail:
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31
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Benitez-Alfonso Y. The Role of Abscisic Acid in the Regulation of Plasmodesmata and Symplastic Intercellular Transport. PLANT & CELL PHYSIOLOGY 2019; 60:713-714. [PMID: 30847492 PMCID: PMC6455045 DOI: 10.1093/pcp/pcz046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 03/05/2019] [Indexed: 05/02/2023]
Affiliation(s)
- Yoselin Benitez-Alfonso
- Centre for Plant Science, School of Biology, University of Leeds, Leeds, UK
- Corresponding author: E-mail,
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32
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Sun Y, Huang D, Chen X. Dynamic regulation of plasmodesmatal permeability and its application to horticultural research. HORTICULTURE RESEARCH 2019; 6:47. [PMID: 30962940 PMCID: PMC6441653 DOI: 10.1038/s41438-019-0129-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 05/10/2023]
Abstract
Effective cell-to-cell communication allows plants to fine-tune their developmental processes in accordance with the prevailing environmental stimuli. Plasmodesmata (PD) are intercellular channels that span the plant cell wall and serve as cytoplasmic bridges to facilitate efficient exchange of signaling molecules between neighboring cells. The identification of PD-associated proteins and the subsequent elucidation of the regulation of PD structure have provided vital insights into the role of PD architecture in enforcing crucial cellular processes, including callose deposition, ER-Golgi-based secretion, cytoskeleton dynamics, membrane lipid raft organization, chloroplast metabolism, and cell wall formation. In this review, we summarize the emerging discoveries from recent studies that elucidated the regulatory mechanisms involved in PD biogenesis and the dynamics of PD opening-closure. Retrospectively, PD-mediated cell-to-cell communication has been implicated in diverse cellular and physiological processes that are fundamental for the development of horticultural plants. The potential application of PD biotechnological engineering represents a powerful approach for improving agronomic traits in horticultural crops in the future.
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Affiliation(s)
- Yanbiao Sun
- College of Life Science and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, Fujian Agriculture and Forestry University, Fuzhou, Fujian China
- Haixia Institute of Science and Technology, Horticultural Plant Biology and Metabolomics Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Dingquan Huang
- Haixia Institute of Science and Technology, Horticultural Plant Biology and Metabolomics Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
| | - Xu Chen
- Haixia Institute of Science and Technology, Horticultural Plant Biology and Metabolomics Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 China
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33
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Abstract
During the establishment of root-nodule symbioses between plants and nitrogen-fixing rhizobia, nodule organogenesis in the inner cortex needs to be precisely coordinated with the rhizobial infection site at the root epidermis. A new study shows that rhizobia induce localized callose turnover at plasmodesmata to allow spatiotemporal synchronization of the two processes through symplastic connections.
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Affiliation(s)
- Caroline Gutjahr
- Technical University of Munich (TUM), School of Life Sciences Weihenstephan, Plant Genetics, Emil Ramann Str. 4, 85354 Freising, Germany.
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