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Yun J, Lee I, Lee JH, Kim S, Jung SH, Oh SA, Lee J, Park SK, Soh MS, Lee Y, Kwak JM. The single RRM domain-containing protein SARP1 is required for establishment of the separation zone in Arabidopsis. THE NEW PHYTOLOGIST 2024. [PMID: 39061105 DOI: 10.1111/nph.19997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024]
Abstract
Abscission is the shedding of plant organs in response to developmental and environmental cues. Abscission involves cell separation between two neighboring cell types, residuum cells (RECs) and secession cells (SECs) in the floral abscission zone (AZ) in Arabidopsis thaliana. However, the regulatory mechanisms behind the spatial determination that governs cell separation are largely unknown. The class I KNOTTED-like homeobox (KNOX) transcription factor BREVIPEDICELLUS (BP) negatively regulates AZ cell size and number in Arabidopsis. To identify new players participating in abscission, we performed a genetic screen by activation tagging a weak complementation line of bp-3. We identified the mutant ebp1 (enhancer of BP1) displaying delayed floral organ abscission. The ebp1 mutant showed a concaved surface in SECs and abnormally stacked cells on the top of RECs, in contrast to the precisely separated surface in the wild-type. Molecular and histological analyses revealed that the transcriptional programming during cell differentiation in the AZ is compromised in ebp1. The SECs of ebp1 have acquired REC-like properties, including cuticle formation and superoxide production. We show that SEPARATION AFFECTING RNA-BINDING PROTEIN1 (SARP1) is upregulated in ebp1 and plays a role in the establishment of the cell separation layer during floral organ abscission in Arabidopsis.
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Affiliation(s)
- Ju Yun
- Department of New Biology, DGIST, Daegu, 42988, Korea
| | - Inhye Lee
- Division of Integrative Bioscience and Bioengineering, Sejong University, Seoul, 05006, Korea
| | - Jae Ho Lee
- Korea Bioinformation Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon, 34141, Korea
| | - Seonghwan Kim
- Department of New Biology, DGIST, Daegu, 42988, Korea
| | - Su Hyun Jung
- Department of New Biology, DGIST, Daegu, 42988, Korea
| | - Sung Aeong Oh
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Korea
| | - Jiyoun Lee
- Department of New Biology, DGIST, Daegu, 42988, Korea
| | - Soon Ki Park
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Korea
| | - Moon-Soo Soh
- Division of Integrative Bioscience and Bioengineering, Sejong University, Seoul, 05006, Korea
| | - Yuree Lee
- School of Biological Sciences, Seoul National University, Seoul, 08826, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Korea
| | - June M Kwak
- Department of New Biology, DGIST, Daegu, 42988, Korea
- Center for Cell Fate Control and Reprogramming, DGIST, Daegu, 42988, Korea
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Skripnikov A. Bioassays for Identifying and Characterizing Plant Regulatory Peptides. Biomolecules 2023; 13:1795. [PMID: 38136666 PMCID: PMC10741408 DOI: 10.3390/biom13121795] [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] [Received: 10/31/2023] [Revised: 12/02/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Plant peptides are a new frontier in plant biology, owing to their key regulatory roles in plant growth, development, and stress responses. Synthetic peptides are promising biological agents that can be used to improve crop growth and protection in an environmentally sustainable manner. Plant regulatory peptides identified in pioneering research, including systemin, PSK, HypSys, RALPH, AtPep1, CLV3, TDIF, CLE, and RGF/GLV/CLEL, hold promise for crop improvement as potent regulators of plant growth and defense. Mass spectrometry and bioinformatics are greatly facilitating the discovery and identification of new plant peptides. The biological functions of most novel plant peptides remain to be elucidated. Bioassays are an essential part in studying the biological activity of identified and putative plant peptides. Root growth assays and cultivated plant cell cultures are widely used to evaluate the regulatory potential of plant peptides during growth, differentiation, and stress reactions. These bioassays can be used as universal approaches for screening peptides from different plant species. Development of high-throughput bioassays can facilitate the screening of large numbers of identified and putative plant peptides, which have recently been discovered but remain uncharacterized for biological activity.
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Affiliation(s)
- Alexander Skripnikov
- Shemyakin—Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St. 16/10, 119997 Moscow, Russia;
- Department of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
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Singh P, Maurya SK, Singh D, Sane AP. The rose INFLORESCENCE DEFICIENT IN ABSCISSION-LIKE genes, RbIDL1 and RbIDL4, regulate abscission in an ethylene-responsive manner. PLANT CELL REPORTS 2023; 42:1147-1161. [PMID: 37069436 DOI: 10.1007/s00299-023-03017-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/03/2023] [Indexed: 06/16/2023]
Abstract
KEY MESSAGE RbIDL1 and RbIDL4 are up-regulated in an ethylene-responsive manner during rose petal abscission and restored the Arabidopsis ida-2 mutant abscission defect suggesting functional conservation of the IDA pathway in rose. Abscission is an ethylene-regulated developmental process wherein plants shed unwanted organs in a controlled manner. The INFLORESCENCE DEFICIENT IN ABSCISSION family has been identified as a key regulator of abscission in Arabidopsis, encoding peptides that interact with receptor-like kinases to activate abscission. Loss of function ida mutants show abscission deficiency in Arabidopsis. Functional conservation of the IDA pathway in other plant abscission processes is a matter of interest given the discovery of these genes in several plants. We have identified four members of the INFLORESCENCE DEFICIENT IN ABSCISSION-LIKE family from the ethylene-sensitive, early-abscising fragrant rose, Rosa bourboniana. All four are conserved in sequence and possess well-defined PIP, mIDa and EPIP motifs. Three of these, RbIDL1, RbIDL2 and RbIDL4 show a three-fourfold increase in transcript levels in petal abscission zones (AZ) during ethylene-induced petal abscission as well as natural abscission. The genes are also expressed in other floral tissues but respond differently to ethylene in these tissues. RbIDL1 and RbIDL4, the more prominently expressed IDL genes in rose, can complement the abscission defect of the Arabidopsis ida-2 mutant; while, promoters of both genes can drive AZ-specific expression in an ethylene-responsive manner even in Arabidopsis silique AZs indicating recognition of AZ-specific and ethylene-responsive cis elements in their promoters by the abscission machinery of rose as well as Arabidopsis.
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Affiliation(s)
- Priya Singh
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shiv Kumar Maurya
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Department of Botany, Kishori Raman (PG) College, Mathura, India
| | - Deepika Singh
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India
| | - Aniruddha P Sane
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Wang P, Wu T, Jiang C, Huang B, Li Z. Brt9SIDA/IDALs as peptide signals mediate diverse biological pathways in plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 330:111642. [PMID: 36804389 DOI: 10.1016/j.plantsci.2023.111642] [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: 11/04/2022] [Revised: 01/28/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
As signal molecules, plant peptides play key roles in intercellular communication during growth and development, as well as stress responses. The 14-amino-acid (aa) INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) peptide was originally identified to play an essential role in the floral organ abscission of Arabidopsis. It is synthesized from its precursor, a small protein containing 77-aa residues with an N-terminal signal peptide sequence. Recently, the IDA/IDA-like (IDLs) genes are isolated in several angiosperms and are highly conserved in land plants. In addition, IDA/IDLs are not only involved in organ abscission but also function in multiple biological processes, including biotic and abiotic stress responses. Here, we summarize the post-translational modification and proteolytic processing, the evolutionary conservation, and the potential regulatory function of IDA/IDLs, and also present future perspectives to investigate the IDA/IDLs signaling pathway. We anticipate that this detailed knowledge will help to improve the understanding of the molecular mechanism of plant peptide signaling.
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Affiliation(s)
- Pingyu Wang
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Ting Wu
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Chen Jiang
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Baowen Huang
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China.
| | - Zhengguo Li
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China.
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Stintzi A, Schaller A. Biogenesis of post-translationally modified peptide signals for plant reproductive development. CURRENT OPINION IN PLANT BIOLOGY 2022; 69:102274. [PMID: 35977439 DOI: 10.1016/j.pbi.2022.102274] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/23/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Post-translationally modified peptides (PMPs) are important regulators of plant growth and development. They are derived from larger inactive precursors by post-translational modification (PTM) and proteolytic processing to result in the bioactive peptide signals. We discuss how and why these modifications contribute to the bioactivity of inflorescence deficient in abscission (IDA), phytosulfokine (PSK), and peptides of the Casparian strip integrity factor (CIF) family, as signaling molecules during reproductive development. The emerging picture suggests that PTMs evolved to increase the specificity of interaction of PMPs with cognate receptors and of PMP precursors with processing proteases. Cleavage sites in PMP precursors are recognized by subtilases (SBTs) in a highly specific manner. SBT-mediated processing results in the activation of PMP signals regulating stress-induced flower drop, the formation of the embryonic cuticle, and pollen development.
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Affiliation(s)
- Annick Stintzi
- Department of Plant Physiology and Biochemistry, University of Hohenheim, 70593 Stuttgart, Germany
| | - Andreas Schaller
- Department of Plant Physiology and Biochemistry, University of Hohenheim, 70593 Stuttgart, Germany.
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Dauphin BG, Ranocha P, Dunand C, Burlat V. Cell-wall microdomain remodeling controls crucial developmental processes. TRENDS IN PLANT SCIENCE 2022; 27:1033-1048. [PMID: 35710764 DOI: 10.1016/j.tplants.2022.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/27/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Plant cell walls display cellular and subcellular specificities. At the subcellular level, wall regional territories with specific compositions are necessary for macroscopic developmental processes. These regional specificities were named differently throughout the years, and are unified here under the term 'cell-wall microdomains' that define the local composition and organization of wall polymers underlying territories of wall loosening and/or softening or stiffening. We review the occurrence and developmental role of wall microdomains in different cell types. We primarily focus on the contribution of two categories of wall-remodeling molecular actors: fine-tuning of homogalacturonan (HG; pectin) demethylesterification patterns and two classes of oxidoreductases [class III peroxidases (CIII PRXs) and laccases (LACs)], but we also highlight two different molecular scaffolds recently identified for positioning specific CIII PRXs.
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Affiliation(s)
- Bastien G Dauphin
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier Toulouse 3, Institut National Polytechnique de Toulouse, 24 chemin de Borde Rouge, 31320 Auzeville-Tolosane, France
| | - Philippe Ranocha
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier Toulouse 3, Institut National Polytechnique de Toulouse, 24 chemin de Borde Rouge, 31320 Auzeville-Tolosane, France
| | - Christophe Dunand
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier Toulouse 3, Institut National Polytechnique de Toulouse, 24 chemin de Borde Rouge, 31320 Auzeville-Tolosane, France
| | - Vincent Burlat
- Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier Toulouse 3, Institut National Polytechnique de Toulouse, 24 chemin de Borde Rouge, 31320 Auzeville-Tolosane, France.
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Lee J, Chen H, Lee G, Emonet A, Kim S, Shim D, Lee Y. MSD2-mediated ROS metabolism fine-tunes the timing of floral organ abscission in Arabidopsis. THE NEW PHYTOLOGIST 2022; 235:2466-2480. [PMID: 35689444 PMCID: PMC9543660 DOI: 10.1111/nph.18303] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/27/2022] [Indexed: 06/14/2023]
Abstract
The timely removal of end-of-purpose flowering organs is as essential for reproduction and plant survival as timely flowering. Despite much progress in understanding the molecular mechanisms of floral organ abscission, little is known about how various environmental factors are integrated into developmental programmes that determine the timing of abscission. Here, we investigated whether reactive oxygen species (ROS), mediators of various stress-related signalling pathways, are involved in determining the timing of abscission and, if so, how they are integrated with the developmental pathway in Arabidopsis thaliana. MSD2, encoding a secretory manganese superoxide dismutase, was preferentially expressed in the abscission zone of flowers, and floral organ abscission was accelerated by the accumulation of ROS in msd2 mutants. The expression of the genes encoding the receptor-like kinase HAESA (HAE) and its cognate peptide ligand INFLORESCENCE DEFICIENT IN ABSCISSION (IDA), the key signalling components of abscission, was accelerated in msd2 mutants, suggesting that MSD2 acts upstream of IDA-HAE. Further transcriptome and pharmacological analyses revealed that abscisic acid and nitric oxide facilitate abscission by regulating the expression of IDA and HAE during MSD2-mediated signalling. These results suggest that MSD2-dependent ROS metabolism is an important regulatory point integrating environmental stimuli into the developmental programme leading to abscission.
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Affiliation(s)
- Jinsu Lee
- Research Institute of Basic SciencesSeoul National UniversitySeoul08826Korea
- Research Centre for Plant PlasticitySeoul National UniversitySeoul08826Korea
| | - Huize Chen
- Research Institute of Basic SciencesSeoul National UniversitySeoul08826Korea
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response in Shanxi ProvinceShanxi Normal UniversityTaiyuan030000ShanxiChina
| | - Gisuk Lee
- Department of Biological SciencesKorea Advanced Institute for Science and TechnologyDaejeon34141Korea
| | - Aurélia Emonet
- Department of Plant Molecular BiologyUniversity of Lausanne1015LausanneSwitzerland
| | - Sang‐Gyu Kim
- Department of Biological SciencesKorea Advanced Institute for Science and TechnologyDaejeon34141Korea
| | - Donghwan Shim
- Department of Biological SciencesChungnam National UniversityDaejeon34134Korea
| | - Yuree Lee
- Research Centre for Plant PlasticitySeoul National UniversitySeoul08826Korea
- School of Biological SciencesSeoul National UniversitySeoul08826Korea
- Plant Genomics and Breeding InstituteSeoul National UniversitySeoul08826Korea
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Añibarro-Ortega M, Pinela J, Alexopoulos A, Petropoulos SA, Ferreira ICFR, Barros L. The powerful Solanaceae: Food and nutraceutical applications in a sustainable world. ADVANCES IN FOOD AND NUTRITION RESEARCH 2022; 100:131-172. [PMID: 35659351 DOI: 10.1016/bs.afnr.2022.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The Solanaceae family is considered one of the most important families among plant species because, on one hand encompasses many staple food crops of the human diet while, on the other hand, it includes species rich in powerful secondary metabolites that could be valorized in medicine or drug formulation as well as nutraceuticals and food supplements. The main genera are Solanum, Capsicum, Physalis, and Lycium which comprise several important cultivated crops (e.g., tomato, pepper, eggplant, tomatillo, and goji berry), as well as genera notable for species with several pharmaceutical properties (e.g., Datura, Nicotiana, Atropa, Mandragora, etc.). This chapter discusses the nutritional value of the most important Solanaceae species commonly used for their edible fruit, as well as those used in the development of functional foods, food supplements, and nutraceuticals due to their bioactive constituents. The toxic and poisonous effects are also discussed aiming to highlight possible detrimental consequences due to irrational use. Finally, considering the high amount of waste and by-products generated through the value chain of the main crops, the sustainable management practices implemented so far are presented with the aim to increase the added-value of these crops.
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Affiliation(s)
- Mikel Añibarro-Ortega
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - José Pinela
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal.
| | - Alexios Alexopoulos
- Laboratory of Agronomy, Department of Agriculture, University of the Peloponnese, Kalamata, Messinia, Greece
| | - Spyridon A Petropoulos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Volos, Greece
| | - Isabel C F R Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Bragança, Portugal.
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Cruz-Valderrama JE, Bernal-Gallardo JJ, Herrera-Ubaldo H, de Folter S. Building a Flower: The Influence of Cell Wall Composition on Flower Development and Reproduction. Genes (Basel) 2021; 12:genes12070978. [PMID: 34206830 PMCID: PMC8304806 DOI: 10.3390/genes12070978] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 12/22/2022] Open
Abstract
Floral patterning is a complex task. Various organs and tissues must be formed to fulfill reproductive functions. Flower development has been studied, mainly looking for master regulators. However, downstream changes such as the cell wall composition are relevant since they allow cells to divide, differentiate, and grow. In this review, we focus on the main components of the primary cell wall-cellulose, hemicellulose, and pectins-to describe how enzymes involved in the biosynthesis, modifications, and degradation of cell wall components are related to the formation of the floral organs. Additionally, internal and external stimuli participate in the genetic regulation that modulates the activity of cell wall remodeling proteins.
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