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Oubohssaine M, Hnini M, Rabeh K. Exploring lipid signaling in plant physiology: From cellular membranes to environmental adaptation. JOURNAL OF PLANT PHYSIOLOGY 2024; 300:154295. [PMID: 38885581 DOI: 10.1016/j.jplph.2024.154295] [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: 02/15/2024] [Revised: 05/23/2024] [Accepted: 06/07/2024] [Indexed: 06/20/2024]
Abstract
Lipids have evolved as versatile signaling molecules that regulate a variety of physiological processes in plants. Convincing evidence highlights their critical role as mediators in a wide range of plant processes required for survival, growth, development, and responses to environmental conditions such as water availability, temperature changes, salt, pests, and diseases. Understanding lipid signaling as a critical process has helped us expand our understanding of plant biology by explaining how plants sense and respond to environmental cues. Lipid signaling pathways constitute a complex network of lipids, enzymes, and receptors that coordinate important cellular responses and stressing plant biology's changing and adaptable traits. Plant lipid signaling involves a wide range of lipid classes, including phospholipids, sphingolipids, oxylipins, and sterols, each of which contributes differently to cellular communication and control. These lipids function not only as structural components, but also as bioactive molecules that transfer signals. The mechanisms entail the production of lipid mediators and their detection by particular receptors, which frequently trigger downstream cascades that affect gene expression, cellular functions, and overall plant growth. This review looks into lipid signaling in plant physiology, giving an in-depth look and emphasizing its critical function as a master regulator of vital activities.
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Affiliation(s)
- Malika Oubohssaine
- Microbiology and Molecular Biology Team, Center of Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, 10000, Morocco.
| | - Mohamed Hnini
- Microbiology and Molecular Biology Team, Center of Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, 10000, Morocco
| | - Karim Rabeh
- Microbiology and Molecular Biology Team, Center of Plant and Microbial Biotechnology, Biodiversity and Environment, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat, 10000, Morocco
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Ohta D, Fuwa A, Yamaroku Y, Isobe K, Nakamoto M, Okazawa A, Ogawa T, Ebine K, Ueda T, Mercier P, Schaller H. Characterization of Subcellular Dynamics of Sterol Methyltransferases Clarifies Defective Cell Division in smt2 smt3, a C-24 Ethyl Sterol-Deficient Mutant of Arabidopsis. Biomolecules 2024; 14:868. [PMID: 39062582 PMCID: PMC11275053 DOI: 10.3390/biom14070868] [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: 06/28/2024] [Revised: 07/14/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
An Arabidopsis sterol mutant, smt2 smt3, defective in sterolmethyltransferase2 (SMT2), exhibits severe growth abnormalities. The loss of C-24 ethyl sterols, maintaining the biosynthesis of C-24 methyl sterols and brassinosteroids, suggests specific roles of C-24 ethyl sterols. We characterized the subcellular localizations of fluorescent protein-fused sterol biosynthetic enzymes, such as SMT2-GFP, and found these enzymes in the endoplasmic reticulum during interphase and identified their movement to the division plane during cytokinesis. The mobilization of endoplasmic reticulum-localized SMT2-GFP was independent of the polarized transport of cytokinetic vesicles to the division plane. In smt2 smt3, SMT2-GFP moved to the abnormal division plane, and unclear cell plate ends were surrounded by hazy structures from SMT2-GFP fluorescent signals and unincorporated cellulose debris. Unusual cortical microtubule organization and impaired cytoskeletal function accompanied the failure to determine the cortical division site and division plane formation. These results indicated that both endoplasmic reticulum membrane remodeling and cytokinetic vesicle transport during cytokinesis were impaired, resulting in the defects of cell wall generation. The cell wall integrity was compromised in the daughter cells, preventing the correct determination of the subsequent cell division site. We discuss the possible roles of C-24 ethyl sterols in the interaction between the cytoskeletal network and the plasma membrane.
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Affiliation(s)
- Daisaku Ohta
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Sakai 599-8531, Japan; (D.O.); (T.O.)
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Ayaka Fuwa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Yuka Yamaroku
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Kazuki Isobe
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Sakai 599-8531, Japan; (D.O.); (T.O.)
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Masatoshi Nakamoto
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Atsushi Okazawa
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Sakai 599-8531, Japan; (D.O.); (T.O.)
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Takumi Ogawa
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Sakai 599-8531, Japan; (D.O.); (T.O.)
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai 599-8531, Japan
| | - Kazuo Ebine
- National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan; (K.E.); (T.U.)
- The Graduate Institute for Advanced Studies, SOKENDAI, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan
| | - Takashi Ueda
- National Institute for Basic Biology, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan; (K.E.); (T.U.)
- The Graduate Institute for Advanced Studies, SOKENDAI, Nishigonaka 38, Myodaiji, Okazaki 444-8585, Japan
| | - Pierre Mercier
- Institute de Biologie Moléculaire des Plantes, CNRS, 12, Rue du Général Zimmer, F-67084 Strasbourg, France; (P.M.); (H.S.)
| | - Hubert Schaller
- Institute de Biologie Moléculaire des Plantes, CNRS, 12, Rue du Général Zimmer, F-67084 Strasbourg, France; (P.M.); (H.S.)
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Kamińska M, Styczynska A, Szakiel A, Pączkowski C, Kućko A. Comprehensive elucidation of the differential physiological kale response to cytokinins under in vitro conditions. BMC PLANT BIOLOGY 2024; 24:674. [PMID: 39004738 PMCID: PMC11247843 DOI: 10.1186/s12870-024-05396-8] [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: 05/09/2024] [Accepted: 07/09/2024] [Indexed: 07/16/2024]
Abstract
BACKGROUND Kale, a versatile cruciferous crop, valued for its pro-health benefits, stress resistance, and potential applications in forage and cosmetics, holds promise for further enhancement of its bioactive compounds through in vitro cultivation methods. Micropropagation techniques use cytokinins (CKs) which are characterized by various proliferative efficiency. Despite the extensive knowledge regarding CKs, there remains a gap in understanding their role in the physiological mechanisms. That is why, here we investigated the effects of three CKs - kinetin (Kin), 6-benzylaminopurine (BAP), and 2-isopentenyladenine (2iP) - on kale physiology, antioxidant status, steroidal metabolism, and membrane integrity under in vitro cultivation. RESULTS Our study revealed that while BAP and 2iP stimulated shoot proliferation, they concurrently diminished pigment levels and photosynthetic efficiency. Heightened metabolic activity in response to all CKs was reflected by increased respiratory rate. Despite the differential burst of ROS, the antioxidant properties of kale were associated with the upregulation of guaiacol peroxidase and the scavenging properties of ascorbate rather than glutathione. Notably, CKs fostered the synthesis of sterols, particularly sitosterol, pivotal for cell proliferation and structure of membranes which are strongly disrupted under the action of BAP and 2iP possibly via pathway related to phospholipase D and lipoxygenase which were upregulated. Intriguingly, both CKs treatment spurred the accumulation of sitostenone, known for its ROS scavenging and therapeutic potential. The differential effects of CKs on brassicasterol levels and brassinosteroid (BRs) receptor suggest potential interactions between CKs and BRs. CONCLUSION Based on the presented results we conclude that the effect evoked by BAP and 2iP in vitro can improve the industrial significance of kale because this treatment makes possible to control proliferation and/or biosynthesis routes of valuable beneficial compounds. Our work offers significant insights into the nuanced effects of CKs on kale physiology and metabolism, illuminating potential avenues for their application in plant biotechnology and medicinal research.
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Affiliation(s)
- Monika Kamińska
- Department of Plant Biochemistry, Faculty of Biology, University of Warsaw, Miecznikowa 1, Warsaw, 02-096, Poland.
| | - Agata Styczynska
- Department of Plant Biochemistry, Faculty of Biology, University of Warsaw, Miecznikowa 1, Warsaw, 02-096, Poland
| | - Anna Szakiel
- Department of Plant Biochemistry, Faculty of Biology, University of Warsaw, Miecznikowa 1, Warsaw, 02-096, Poland
| | - Cezary Pączkowski
- Department of Plant Biochemistry, Faculty of Biology, University of Warsaw, Miecznikowa 1, Warsaw, 02-096, Poland
| | - Agata Kućko
- Department of Plant Physiology, Institute of Biology, Warsaw University of Life Sciences- SGGW (WULS-SGGW), Nowoursynowska 159, Warsaw, 02-776, Poland
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Delmer D, Dixon RA, Keegstra K, Mohnen D. The plant cell wall-dynamic, strong, and adaptable-is a natural shapeshifter. THE PLANT CELL 2024; 36:1257-1311. [PMID: 38301734 PMCID: PMC11062476 DOI: 10.1093/plcell/koad325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 12/19/2023] [Indexed: 02/03/2024]
Abstract
Mythology is replete with good and evil shapeshifters, who, by definition, display great adaptability and assume many different forms-with several even turning themselves into trees. Cell walls certainly fit this definition as they can undergo subtle or dramatic changes in structure, assume many shapes, and perform many functions. In this review, we cover the evolution of knowledge of the structures, biosynthesis, and functions of the 5 major cell wall polymer types that range from deceptively simple to fiendishly complex. Along the way, we recognize some of the colorful historical figures who shaped cell wall research over the past 100 years. The shapeshifter analogy emerges more clearly as we examine the evolving proposals for how cell walls are constructed to allow growth while remaining strong, the complex signaling involved in maintaining cell wall integrity and defense against disease, and the ways cell walls adapt as they progress from birth, through growth to maturation, and in the end, often function long after cell death. We predict the next century of progress will include deciphering cell type-specific wall polymers; regulation at all levels of polymer production, crosslinks, and architecture; and how walls respond to developmental and environmental signals to drive plant success in diverse environments.
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Affiliation(s)
- Deborah Delmer
- Section of Plant Biology, University of California Davis, Davis, CA 95616, USA
| | - Richard A Dixon
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Kenneth Keegstra
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI 48823, USA
| | - Debra Mohnen
- Complex Carbohydrate Research Center and Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA
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Liu X, Ma Z, Tran TM, Rautengarten C, Cheng Y, Yang L, Ebert B, Persson S, Miao Y. Balanced callose and cellulose biosynthesis in Arabidopsis quorum-sensing signaling and pattern-triggered immunity. PLANT PHYSIOLOGY 2023; 194:137-152. [PMID: 37647538 PMCID: PMC10756761 DOI: 10.1093/plphys/kiad473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 07/18/2023] [Indexed: 09/01/2023]
Abstract
The plant cell wall (CW) is one of the most important physical barriers that phytopathogens must conquer to invade their hosts. This barrier is a dynamic structure that responds to pathogen infection through a complex network of immune receptors, together with CW-synthesizing and CW-degrading enzymes. Callose deposition in the primary CW is a well-known physical response to pathogen infection. Notably, callose and cellulose biosynthesis share an initial substrate, UDP-glucose, which is the main load-bearing component of the CW. However, how these 2 critical biosynthetic processes are balanced during plant-pathogen interactions remains unclear. Here, using 2 different pathogen-derived molecules, bacterial flagellin (flg22) and the diffusible signal factor (DSF) produced by Xanthomonas campestris pv. campestris, we show a negative correlation between cellulose and callose biosynthesis in Arabidopsis (Arabidopsis thaliana). By quantifying the abundance of callose and cellulose under DSF or flg22 elicitation and characterizing the dynamics of the enzymes involved in the biosynthesis and degradation of these 2 polymers, we show that the balance of these 2 CW components is mediated by the activity of a β-1,3-glucanase (BG2). Our data demonstrate balanced cellulose and callose biosynthesis during plant immune responses.
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Affiliation(s)
- Xiaolin Liu
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Zhiming Ma
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Tuan Minh Tran
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
- Department of Biology, University of South Alabama, Mobile, AL 36688, USA
| | - Carsten Rautengarten
- School of BioSciences, University of Melbourne, Parkville, Victoria 3010, Australia
- Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum 44810, Germany
| | - Yingying Cheng
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore
| | - Liang Yang
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore
- School of Medicine, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
| | - Berit Ebert
- School of BioSciences, University of Melbourne, Parkville, Victoria 3010, Australia
- Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum 44810, Germany
| | - Staffan Persson
- Department of Plant and Environmental Sciences (PLEN), University of Copenhagen, 1871 Frederiksberg C, Denmark
- Copenhagen Plant Science Center, University of Copenhagen, 1871 Frederiksberg C, Denmark
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, SJTU-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yansong Miao
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
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Wen X, Chen Z, Yang Z, Wang M, Jin S, Wang G, Zhang L, Wang L, Li J, Saeed S, He S, Wang Z, Wang K, Kong Z, Li F, Zhang X, Chen X, Zhu Y. A comprehensive overview of cotton genomics, biotechnology and molecular biological studies. SCIENCE CHINA. LIFE SCIENCES 2023; 66:2214-2256. [PMID: 36899210 DOI: 10.1007/s11427-022-2278-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/09/2023] [Indexed: 03/12/2023]
Abstract
Cotton is an irreplaceable economic crop currently domesticated in the human world for its extremely elongated fiber cells specialized in seed epidermis, which makes it of high research and application value. To date, numerous research on cotton has navigated various aspects, from multi-genome assembly, genome editing, mechanism of fiber development, metabolite biosynthesis, and analysis to genetic breeding. Genomic and 3D genomic studies reveal the origin of cotton species and the spatiotemporal asymmetric chromatin structure in fibers. Mature multiple genome editing systems, such as CRISPR/Cas9, Cas12 (Cpf1) and cytidine base editing (CBE), have been widely used in the study of candidate genes affecting fiber development. Based on this, the cotton fiber cell development network has been preliminarily drawn. Among them, the MYB-bHLH-WDR (MBW) transcription factor complex and IAA and BR signaling pathway regulate the initiation; various plant hormones, including ethylene, mediated regulatory network and membrane protein overlap fine-regulate elongation. Multistage transcription factors targeting CesA 4, 7, and 8 specifically dominate the whole process of secondary cell wall thickening. And fluorescently labeled cytoskeletal proteins can observe real-time dynamic changes in fiber development. Furthermore, research on the synthesis of cotton secondary metabolite gossypol, resistance to diseases and insect pests, plant architecture regulation, and seed oil utilization are all conducive to finding more high-quality breeding-related genes and subsequently facilitating the cultivation of better cotton varieties. This review summarizes the paramount research achievements in cotton molecular biology over the last few decades from the above aspects, thereby enabling us to conduct a status review on the current studies of cotton and provide strong theoretical support for the future direction.
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Affiliation(s)
- Xingpeng Wen
- Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China
- College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Zhiwen Chen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, University of CAS, Chinese Academy of Sciences, Shanghai, 200032, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China
| | - Zuoren Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Maojun Wang
- Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shuangxia Jin
- Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Guangda Wang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Li Zhang
- Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China
| | - Lingjian Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, University of CAS, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jianying Li
- Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Sumbul Saeed
- Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shoupu He
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Zhi Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Kun Wang
- College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Zhaosheng Kong
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.
- Shanxi Agricultural University, Jinzhong, 030801, China.
| | - Fuguang Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China.
| | - Xianlong Zhang
- Hubei Hongshan Laboratory, National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Xiaoya Chen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, University of CAS, Chinese Academy of Sciences, Shanghai, 200032, China.
- Hainan Yazhou Bay Seed Laboratory, Sanya, 572025, China.
| | - Yuxian Zhu
- Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China.
- College of Life Sciences, Wuhan University, Wuhan, 430072, China.
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Pons C, Casals J, Brower M, Sacco A, Riccini A, Hendrickx P, Figás MDR, Fisher J, Grandillo S, Mazzucato A, Soler S, Zamir D, Causse M, Díez MJ, Finkers R, Prohens J, Monforte AJ, Granell A. Diversity and genetic architecture of agro-morphological traits in a core collection of European traditional tomato. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5896-5916. [PMID: 37527560 PMCID: PMC10540738 DOI: 10.1093/jxb/erad306] [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: 03/07/2023] [Accepted: 07/28/2023] [Indexed: 08/03/2023]
Abstract
European traditional tomato varieties have been selected by farmers given their consistent performance and adaptation to local growing conditions. Here we developed a multipurpose core collection, comprising 226 accessions representative of the genotypic, phenotypic, and geographical diversity present in European traditional tomatoes, to investigate the basis of their phenotypic variation, gene×environment interactions, and stability for 33 agro-morphological traits. Comparison of the traditional varieties with a modern reference panel revealed that some traditional varieties displayed excellent agronomic performance and high trait stability, as good as or better than that of their modern counterparts. We conducted genome-wide association and genome-wide environment interaction studies and detected 141 quantitative trait loci (QTLs). Out of those, 47 QTLs were associated with the phenotype mean (meanQTLs), 41 with stability (stbQTLs), and 53 QTL-by-environment interactions (QTIs). Most QTLs displayed additive gene actions, with the exception of stbQTLs, which were mostly recessive and overdominant QTLs. Both common and specific loci controlled the phenotype mean and stability variation in traditional tomato; however, a larger proportion of specific QTLs was observed, indicating that the stability gene regulatory model is the predominant one. Developmental genes tended to map close to meanQTLs, while genes involved in stress response, hormone metabolism, and signalling were found within regions affecting stability. A total of 137 marker-trait associations for phenotypic means and stability were novel, and therefore our study enhances the understanding of the genetic basis of valuable agronomic traits and opens up a new avenue for an exploitation of the allelic diversity available within European traditional tomato germplasm.
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Affiliation(s)
- Clara Pons
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
- Instituto de Biología Molecular y Celular de Plantas (IBMCP). Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
| | - Joan Casals
- Department of Agri-Food Engineering and Biotechnology/Miquel Agustí Foundation, Universitat Politècnica de Catalunya, Campus Baix Llobregat, Esteve Terrades 8, 08860 Castelldefels, Spain
| | - Matthijs Brower
- Wageningen University & Research, Plant Breeding, POB 386, NL-6700 AJ Wageningen, The Netherlands
| | - Adriana Sacco
- Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), Via Università 133, 80055 Portici, Italy
| | - Alessandro Riccini
- Department of Agriculture and Forest Sciences (DAFNE), Università degli Studi della Tuscia, Viterbo, Italy
| | - Patrick Hendrickx
- Wageningen University & Research, Plant Breeding, POB 386, NL-6700 AJ Wageningen, The Netherlands
| | - Maria del Rosario Figás
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
| | - Josef Fisher
- Hebrew University of Jerusalem, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Rehovot, Israel
| | - Silvana Grandillo
- Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), Via Università 133, 80055 Portici, Italy
| | - Andrea Mazzucato
- Department of Agriculture and Forest Sciences (DAFNE), Università degli Studi della Tuscia, Viterbo, Italy
| | - Salvador Soler
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
| | - Dani Zamir
- Hebrew University of Jerusalem, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Rehovot, Israel
| | - Mathilde Causse
- INRAE, UR1052, Génétique et Amélioration des Fruits et Légumes 67 Allée des Chênes, Domaine Saint Maurice, CS60094, Montfavet, 84143, France
| | - Maria José Díez
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
| | - Richard Finkers
- Wageningen University & Research, Plant Breeding, POB 386, NL-6700 AJ Wageningen, The Netherlands
| | - Jaime Prohens
- Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Universitat Politècnica de València, València, Spain
| | - Antonio Jose Monforte
- Instituto de Biología Molecular y Celular de Plantas (IBMCP). Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
| | - Antonio Granell
- Instituto de Biología Molecular y Celular de Plantas (IBMCP). Consejo Superior de Investigaciones Científicas (CSIC), Universitat Politècnica de València, València, Spain
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Evtyugin DD, Evtuguin DV, Casal S, Domingues MR. Advances and Challenges in Plant Sterol Research: Fundamentals, Analysis, Applications and Production. Molecules 2023; 28:6526. [PMID: 37764302 PMCID: PMC10535520 DOI: 10.3390/molecules28186526] [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: 07/28/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Plant sterols (PS) are cholesterol-like terpenoids widely spread in the kingdom Plantae. Being the target of extensive research for more than a century, PS have topped with evidence of having beneficial effects in healthy subjects and applications in food, cosmetic and pharmaceutical industries. However, many gaps in several fields of PS's research still hinder their widespread practical applications. In fact, many of the mechanisms associated with PS supplementation and their health benefits are still not fully elucidated. Furthermore, compared to cholesterol data, many complex PS chemical structures still need to be fully characterized, especially in oxidized PS. On the other hand, PS molecules have also been the focus of structural modifications for applications in diverse areas, including not only the above-mentioned but also in e.g., drug delivery systems or alternative matrixes for functional foods and fats. All the identified drawbacks are also superimposed by the need of new PS sources and technologies for their isolation and purification, taking into account increased environmental and sustainability concerns. Accordingly, current and future trends in PS research warrant discussion.
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Affiliation(s)
- Dmitry D. Evtyugin
- CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (D.D.E.); (D.V.E.)
- LAQV-REQUIMTE, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Dmitry V. Evtuguin
- CICECO, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; (D.D.E.); (D.V.E.)
| | - Susana Casal
- LAQV-REQUIMTE, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Maria Rosário Domingues
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
- CESAM, Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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9
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Mudalungu CM, Mokaya HO, Tanga CM. Beneficial sterols in selected edible insects and their associated antibacterial activities. Sci Rep 2023; 13:10786. [PMID: 37402875 DOI: 10.1038/s41598-023-37905-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 06/29/2023] [Indexed: 07/06/2023] Open
Abstract
Edible insects are increasingly gaining popularity as research reveals multiple benefits. However, the rediscovery of natural products from insects as medicinal agents has received limited attention. This study aimed at evaluating the diversity of sterols in extracts of nine edible insects and potential antibacterial activities. Dichloromethane extracts of these insects were analyzed using gas chromatography-mass spectrometry to identify important sterols, followed by evaluation of their anti-bacterial activities. Nineteen sterols were identified with the highest recorded in African fruit beetle [Pachnoda sinuata (47.37%)], crickets [Gryllus bimaculatus (36.84%) and Scapsipedus icipe (31.58%)]. Cholesterol was the most prevalent, except in black soldier fly (Hermetia illucens). Bioactivity revealed S. icipe as the most potent extract against Escherichia coli and Bacillus subtilis whereas G. bimaculatus was highest against Methicillin-susceptible Staphylococcus aureus 25923. These findings unravels the diversity of sterols in edible insects and their possible application in food, pharmaceutical and cosmetic industries.
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Affiliation(s)
- Cynthia Muhavi Mudalungu
- International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, 00100, Kenya.
| | - Hosea Oginda Mokaya
- International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, 00100, Kenya
| | - Chrysantus Mbi Tanga
- International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, 00100, Kenya
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10
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Pedersen GB, Blaschek L, Frandsen KEH, Noack LC, Persson S. Cellulose synthesis in land plants. MOLECULAR PLANT 2023; 16:206-231. [PMID: 36564945 DOI: 10.1016/j.molp.2022.12.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
All plant cells are surrounded by a cell wall that provides cohesion, protection, and a means of directional growth to plants. Cellulose microfibrils contribute the main biomechanical scaffold for most of these walls. The biosynthesis of cellulose, which typically is the most prominent constituent of the cell wall and therefore Earth's most abundant biopolymer, is finely attuned to developmental and environmental cues. Our understanding of the machinery that catalyzes and regulates cellulose biosynthesis has substantially improved due to recent technological advances in, for example, structural biology and microscopy. Here, we provide a comprehensive overview of the structure, function, and regulation of the cellulose synthesis machinery and its regulatory interactors. We aim to highlight important knowledge gaps in the field, and outline emerging approaches that promise a means to close those gaps.
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Affiliation(s)
- Gustav B Pedersen
- Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Leonard Blaschek
- Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Kristian E H Frandsen
- Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Lise C Noack
- Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Staffan Persson
- Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark; Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, SJTU-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
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11
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Stroppa N, Onelli E, Moreau P, Maneta-Peyret L, Berno V, Cammarota E, Ambrosini R, Caccianiga M, Scali M, Moscatelli A. Sterols and Sphingolipids as New Players in Cell Wall Building and Apical Growth of Nicotiana tabacum L. Pollen Tubes. PLANTS (BASEL, SWITZERLAND) 2022; 12:8. [PMID: 36616135 PMCID: PMC9824051 DOI: 10.3390/plants12010008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/05/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Pollen tubes are tip-growing cells that create safe routes to convey sperm cells to the embryo sac for double fertilization. Recent studies have purified and biochemically characterized detergent-insoluble membranes from tobacco pollen tubes. These microdomains, called lipid rafts, are rich in sterols and sphingolipids and are involved in cell polarization in organisms evolutionarily distant, such as fungi and mammals. The presence of actin in tobacco pollen tube detergent-insoluble membranes and the preferential distribution of these domains on the apical plasma membrane encouraged us to formulate the intriguing hypothesis that sterols and sphingolipids could be a "trait d'union" between actin dynamics and polarized secretion at the tip. To unravel the role of sterols and sphingolipids in tobacco pollen tube growth, we used squalestatin and myriocin, inhibitors of sterol and sphingolipid biosynthesis, respectively, to determine whether lipid modifications affect actin fringe morphology and dynamics, leading to changes in clear zone organization and cell wall deposition, thus suggesting a role played by these lipids in successful fertilization.
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Affiliation(s)
- Nadia Stroppa
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Elisabetta Onelli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Patrick Moreau
- CNRS, Laboratoire de Biogenèse Membranaire, University of Bordeaux, UMR 5200, 71 Avenue Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Lilly Maneta-Peyret
- CNRS, Laboratoire de Biogenèse Membranaire, University of Bordeaux, UMR 5200, 71 Avenue Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Valeria Berno
- ALEMBIC Advanced Light and Electron Microscopy BioImaging Center, San Raffaele Scientific Institute, DIBIT 1, Via Olgettina 58, 20132 Milan, Italy
| | - Eugenia Cammarota
- ALEMBIC Advanced Light and Electron Microscopy BioImaging Center, San Raffaele Scientific Institute, DIBIT 1, Via Olgettina 58, 20132 Milan, Italy
| | - Roberto Ambrosini
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Marco Caccianiga
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Monica Scali
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Alessandra Moscatelli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
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12
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Du Y, Fu X, Chu Y, Wu P, Liu Y, Ma L, Tian H, Zhu B. Biosynthesis and the Roles of Plant Sterols in Development and Stress Responses. Int J Mol Sci 2022; 23:ijms23042332. [PMID: 35216448 PMCID: PMC8875669 DOI: 10.3390/ijms23042332] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 01/01/2023] Open
Abstract
Plant sterols are important components of the cell membrane and lipid rafts, which play a crucial role in various physiological and biochemical processes during development and stress resistance in plants. In recent years, many studies in higher plants have been reported in the biosynthesis pathway of plant sterols, whereas the knowledge about the regulation and accumulation of sterols is not well understood. In this review, we summarize and discuss the recent findings in the field of plant sterols, including their biosynthesis, regulation, functions, as well as the mechanism involved in abiotic stress responses. These studies provide better knowledge on the synthesis and regulation of sterols, and the review also aimed to provide new insights for the global role of sterols, which is liable to benefit future research on the development and abiotic stress tolerance in plant.
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Affiliation(s)
- Yinglin Du
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Xizhe Fu
- The College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310012, China;
| | - Yiyang Chu
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Peiwen Wu
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Ye Liu
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Lili Ma
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Huiqin Tian
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
| | - Benzhong Zhu
- The College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (Y.D.); (Y.C.); (P.W.); (Y.L.); (L.M.); (H.T.)
- Correspondence:
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13
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Nartea A, Falcone PM, Torri L, Ghanbarzadeh B, Frega NG, Pacetti D. Modeling Softening Kinetics at Cellular Scale and Phytochemicals Extractability in Cauliflower under Different Cooking Treatments. Foods 2021; 10:1969. [PMID: 34574079 PMCID: PMC8472173 DOI: 10.3390/foods10091969] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 01/18/2023] Open
Abstract
The effects induced by heat on Depurple and Cheddar (Brassica oleracea L. var. botrytis) during boiling, steaming, and sous-vide were investigated to elucidate the role of the basic cellular elements in softening and extractability of sterols and tocopherols. With this aim, an elastoplastic mechanical model was conceptualized at a cell scale-size and validated under creep experiments. The total amount of the phytochemicals was used to validate multivariate regression models in forecasting. Boiling was the most effective method to enhance the softening mechanisms causing tissue decompartmentalization through cell wall loosening with respect to those causing cell separation, having no impact on the phytochemical extractability. Sous-vide showed the lowest impact on cell wall integrity, but the highest in terms of cell separation. Steaming showed an intermediate behavior. Tissue of the Depurple cauliflower was the most resistant to the heat, irrespectively to the heating technology. Local heterogeneity in the cell wall and cell membrane, expected as a plant variety-dependent functional property, was proposed as a possible explanation because sterol extractability under lower heat-transfer efficiency, i.e., steaming and sous-vide, decreased in Depurple and increased in Cheddar as well as because the extractability of sterols and tocopherols was greater in Cheddar.
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Affiliation(s)
- Ancuta Nartea
- Department of Agricultural, Food and Environmental Sciences (D3A)—Marche University Polytechnical, Monte Dago, Via Brecce Bianche, 10-60131 Ancona, Italy; (A.N.); (N.G.F.); (D.P.)
| | - Pasquale Massimiliano Falcone
- Department of Agricultural, Food and Environmental Sciences (D3A)—Marche University Polytechnical, Monte Dago, Via Brecce Bianche, 10-60131 Ancona, Italy; (A.N.); (N.G.F.); (D.P.)
| | - Luisa Torri
- University of Gastronomic Sciences, Piazza Vittorio Emanuele II, 9-12042 Pollenzo, Cuneo, Italy;
| | - Babak Ghanbarzadeh
- Department of Food Science and Technology, University of Tabriz, Tabriz 51666-16471, Iran;
| | - Natale Giuseppe Frega
- Department of Agricultural, Food and Environmental Sciences (D3A)—Marche University Polytechnical, Monte Dago, Via Brecce Bianche, 10-60131 Ancona, Italy; (A.N.); (N.G.F.); (D.P.)
| | - Deborah Pacetti
- Department of Agricultural, Food and Environmental Sciences (D3A)—Marche University Polytechnical, Monte Dago, Via Brecce Bianche, 10-60131 Ancona, Italy; (A.N.); (N.G.F.); (D.P.)
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14
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Xu F, Chen Q, Huang L, Luo M. Advances about the Roles of Membranes in Cotton Fiber Development. MEMBRANES 2021; 11:membranes11070471. [PMID: 34202386 PMCID: PMC8307351 DOI: 10.3390/membranes11070471] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/18/2022]
Abstract
Cotton fiber is an extremely elongated single cell derived from the ovule epidermis and is an ideal model for studying cell development. The plasma membrane is tremendously expanded and accompanied by the coordination of various physiological and biochemical activities on the membrane, one of the three major systems of a eukaryotic cell. This review compiles the recent progress and advances for the roles of the membrane in cotton fiber development: the functions of membrane lipids, especially the fatty acids, sphingolipids, and phytosterols; membrane channels, including aquaporins, the ATP-binding cassette (ABC) transporters, vacuolar invertase, and plasmodesmata; and the regulation mechanism of membrane proteins, such as membrane binding enzymes, annexins, and receptor-like kinases.
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Affiliation(s)
- Fan Xu
- Biotechnology Research Center, Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture, Southwest University, Chongqing 400715, China; (F.X.); (L.H.)
| | - Qian Chen
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400715, China;
| | - Li Huang
- Biotechnology Research Center, Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture, Southwest University, Chongqing 400715, China; (F.X.); (L.H.)
| | - Ming Luo
- Biotechnology Research Center, Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture, Southwest University, Chongqing 400715, China; (F.X.); (L.H.)
- Correspondence:
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15
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Jayawardhane KN, Singer SD, Ozga JA, Rizvi SM, Weselake RJ, Chen G. Seed-specific down-regulation of Arabidopsis CELLULOSE SYNTHASE 1 or 9 reduces seed cellulose content and differentially affects carbon partitioning. PLANT CELL REPORTS 2020; 39:953-969. [PMID: 32314045 DOI: 10.1007/s00299-020-02541-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 04/04/2020] [Indexed: 06/11/2023]
Abstract
Seed-specific down-regulation of AtCESA1 and AtCESA9, which encode cellulose synthase subunits, differentially affects seed storage compound accumulation in Arabidopsis. High amounts of cellulose can negatively affect crop seed quality, and, therefore, diverting carbon partitioning from cellulose to oil, protein and/or starch via molecular breeding may improve seed quality. To determine the effect of seed cellulose content reduction on levels of storage compounds, Arabidopsis thaliana CELLULOSE SYNTHASE1 (AtCESA1) and AtCESA9 genes, which both encode cellulose synthase subunits, were individually down-regulated using seed-specific intron-spliced hairpin RNA (hpRNAi) constructs. The selected seed-specific AtCESA1 and AtCESA9 Arabidopsis RNAi lines displayed reduced cellulose contents in seeds, and exhibited no obvious visual phenotypic growth defects with the exception of a minor effect on early root development in AtCESA1 RNAi seedlings and early hypocotyl elongation in the dark in both types of RNAi line. The seed-specific down-regulation of AtCESA9 resulted in a reduction in seed weight compared to empty vector controls, which was not observed in AtCESA1 RNAi lines. In terms of effects on carbon partitioning, AtCESA1 and AtCESA9 RNAi lines exhibited distinct effects. The down-regulation of AtCESA1 led to a ~ 3% relative increase in seed protein content (P = 0.04) and a ~ 3% relative decrease in oil content (P = 0.02), but caused no alteration in soluble glucose levels. On the contrary, AtCESA9 RNAi lines did not display a significant reduction in seed oil, protein or soluble glucose content. Taken together, our results indicate that the seed-specific down-regulation of AtCESA1 causes alterations in seed storage compound accumulation, while the effect of AtCESA9 on carbon partitioning is absent or minor in Arabidopsis.
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Affiliation(s)
- Kethmi N Jayawardhane
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Stacy D Singer
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, AB, T1J 4B1, Canada
| | - Jocelyn A Ozga
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Syed Masood Rizvi
- Corteva Agriscience, Site 600, RR #6, PO Box 12, Saskatoon, SK, S7K 3J9, Canada
| | - Randall J Weselake
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Guanqun Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada.
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16
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The Plasma Membrane-An Integrating Compartment for Mechano-Signaling. PLANTS 2020; 9:plants9040505. [PMID: 32295309 PMCID: PMC7238056 DOI: 10.3390/plants9040505] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/11/2020] [Accepted: 04/12/2020] [Indexed: 12/30/2022]
Abstract
Plants are able to sense their mechanical environment. This mechanical signal is used by the plant to determine its phenotypic features. This is true also at a smaller scale. Morphogenesis, both at the cell and tissue level, involves mechanical signals that influence specific patterns of gene expression and trigger signaling pathways. How a mechanical stress is perceived and how this signal is transduced into the cell remains a challenging question in the plant community. Among the structural components of plant cells, the plasma membrane has received very little attention. Yet, its position at the interface between the cell wall and the interior of the cell makes it a key factor at the nexus between biochemical and mechanical cues. So far, most of the key players that are described to perceive and maintain mechanical cell status and to respond to a mechanical stress are localized at or close to the plasma membrane. In this review, we will focus on the importance of the plasma membrane in mechano-sensing and try to illustrate how the composition of this dynamic compartment is involved in the regulatory processes of a cell to respond to mechanical stress.
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17
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Niu Q, Tan K, Zang Z, Xiao Z, Chen K, Hu M, Luo M. Modification of phytosterol composition influences cotton fiber cell elongation and secondary cell wall deposition. BMC PLANT BIOLOGY 2019; 19:208. [PMID: 31109298 PMCID: PMC6528235 DOI: 10.1186/s12870-019-1830-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 05/13/2019] [Indexed: 05/30/2023]
Abstract
BACKGROUND Cotton fiber is a single cell that arises from the epidermis of ovule. It is not only a main economic product of cotton, but an ideal material for studying on the growth and development of plant cell. Our previous study indicated that phytosterol content and the ratio of campesterol to sitosterol fluctuated regularly in cotton fiber development. However, what effects of modified phytosterol content and composition on the growth and development of cotton fiber cell is unknown. In this study, we overexpressed the GhSMT2-1, a cotton homologue of sterol C-24 methyltransferase 2 gene in transgenic upland cotton plants to modify phytosterol content and composition in fiber cells and investigated the changes on fiber elongation and secondary cell wall deposition. RESULTS GhSMT2-1 overexpression led to changes of phytosterol content and the ratio of campesterol to sitosterol in fiber cell. At the rapid elongation stage of fiber cell, total phytosterol and sitosterol contents were increased while campesterol content was decreased in transgenic fibers when compared to control fibers. Accordingly, the ratio of campesterol to sitosterol declined strikingly. Simultaneously, the transgenic fibers were shorter and thicker than control fibers. Exogenous application of sitosterol or campesterol separately inhibited control fiber cell elongation in cotton ovule culture system in vitro. In addition, campesterol treatment partially rescued transgenic fiber elongation. CONCLUSION These results elucidated that modification of phytosterol content and composition influenced fiber cell elongation and secondary cell wall formation. High sitosterol or low ratio of campesterol to sitosterol suppresses fiber elongation and/or promote secondary cell wall deposition. The roles of sitosterol and campesterol were discussed in fiber cell development. There might be a specific ratio of campesterol to sitosterol in different developmental stage of cotton fibers, in which GhSMT2-1 play an important role. Our study, at a certain degree, provides novel insights into the regulatory mechanisms of fiber cell development.
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Affiliation(s)
- Qi Niu
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Kunling Tan
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Zhenle Zang
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Zhongyi Xiao
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Kuijun Chen
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Mingyu Hu
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
| | - Ming Luo
- Key Laboratory of Biotechnology and Crop Quality Improvement, Ministry of Agriculture/Biotechnology Research Center, Southwest University, Tiansheng Road 2, Beibei, Chongqing, 400716 People’s Republic of China
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18
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Aboobucker SI, Suza WP. Why Do Plants Convert Sitosterol to Stigmasterol? FRONTIERS IN PLANT SCIENCE 2019; 10:354. [PMID: 30984220 PMCID: PMC6447690 DOI: 10.3389/fpls.2019.00354] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/07/2019] [Indexed: 05/11/2023]
Abstract
A direct role for cholesterol signaling in mammals is clearly established; yet, the direct role in signaling for a plant sterol or sterol precursor is unclear. Fluctuations in sitosterol and stigmasterol levels during development and stress conditions suggest their involvement in signaling activities essential for plant development and stress compensation. Stigmasterol may be involved in gravitropism and tolerance to abiotic stress. The isolation of stigmasterol biosynthesis mutants offers a promising tool to test the function of sterol end products in signaling responses to developmental and environmental cues.
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Affiliation(s)
| | - Walter P. Suza
- Department of Agronomy, Iowa State University, Ames, IA, United States
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19
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Zhang HM, Devine LB, Xia X, Offler CE, Patrick JW. Ethylene and hydrogen peroxide regulate formation of a sterol-enriched domain essential for wall labyrinth assembly in transfer cells. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:1469-1482. [PMID: 30649402 PMCID: PMC6411373 DOI: 10.1093/jxb/erz003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/02/2019] [Indexed: 05/20/2023]
Abstract
Transfer cells (TCs) facilitate high rates of nutrient transport into, and within, the plant body. Their transport function is conferred by polarized wall ingrowth papillae, deposited upon a specialized uniform wall layer, that form a scaffold supporting an amplified area of plasma membrane enriched in nutrient transporters. We explored the question of whether lipid-enriched domains of the TC plasma membrane could serve as organizational platforms for proteins regulating the construction of the intricate TC wall labyrinth using developing Vicia faba cotyledons. When these cotyledons are placed in culture, their adaxial epidermal cells trans-differentiate to a TC phenotype regulated by auxin, ethylene, extracellular hydrogen peroxide (apoH2O2), and cytosolic Ca2+ ([Ca2+]cyt) arranged in series. Staining cultured cotyledons with the sterol-specific dye, Filipin III, detected a polarized sterol-enriched domain in the plasma membrane of their trans-differentiating epidermal transfer cells (ETCs). Ethylene activated sterol biosynthesis while extracellular apoH2O2 directed sterol-enriched vesicles to fuse with the outer periclinal region of the ETC plasma membrane. The sterol-enriched domain was essential for generating the [Ca2+]cyt signal and orchestrating construction of both the uniform wall layer and wall ingrowth papillae. A model is presented outlining how the sterol-enriched plasma membrane domain forms and functions to regulate wall labyrinth assembly.
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Affiliation(s)
- Hui-Ming Zhang
- School of Environmental and Life Sciences, University of Newcastle, Newcastle NSW, Australia
| | - Luke B Devine
- School of Environmental and Life Sciences, University of Newcastle, Newcastle NSW, Australia
| | - Xue Xia
- School of Environmental and Life Sciences, University of Newcastle, Newcastle NSW, Australia
| | - Christina E Offler
- School of Environmental and Life Sciences, University of Newcastle, Newcastle NSW, Australia
- Correspondence: or
| | - John W Patrick
- School of Environmental and Life Sciences, University of Newcastle, Newcastle NSW, Australia
- Correspondence: or
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20
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Buti M, Moretto M, Barghini E, Mascagni F, Natali L, Brilli M, Lomsadze A, Sonego P, Giongo L, Alonge M, Velasco R, Varotto C, Šurbanovski N, Borodovsky M, Ward JA, Engelen K, Cavallini A, Cestaro A, Sargent DJ. The genome sequence and transcriptome of Potentilla micrantha and their comparison to Fragaria vesca (the woodland strawberry). Gigascience 2018; 7:1-14. [PMID: 29659812 PMCID: PMC5893959 DOI: 10.1093/gigascience/giy010] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 02/07/2018] [Indexed: 11/20/2022] Open
Abstract
Background The genus Potentilla is closely related to that of Fragaria, the economically important strawberry genus. Potentilla micrantha is a species that does not develop berries but shares numerous morphological and ecological characteristics with Fragaria vesca. These similarities make P. micrantha an attractive choice for comparative genomics studies with F. vesca. Findings In this study, the P. micrantha genome was sequenced and annotated, and RNA-Seq data from the different developmental stages of flowering and fruiting were used to develop a set of gene predictions. A 327 Mbp sequence and annotation of the genome of P. micrantha, spanning 2674 sequence contigs, with an N50 size of 335,712, estimated to cover 80% of the total genome size of the species was developed. The genus Potentilla has a characteristically larger genome size than Fragaria, but the recovered sequence scaffolds were remarkably collinear at the micro-syntenic level with the genome of F. vesca, its closest sequenced relative. A total of 33,602 genes were predicted, and 95.1% of bench-marking universal single-copy orthologous genes were complete within the presented sequence. Thus, we argue that the majority of the gene-rich regions of the genome have been sequenced. Conclusions Comparisons of RNA-Seq data from the stages of floral and fruit development revealed genes differentially expressed between P. micrantha and F. vesca.The data presented are a valuable resource for future studies of berry development in Fragaria and the Rosaceae and they also shed light on the evolution of genome size and organization in this family.
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Affiliation(s)
- Matteo Buti
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy.,Center for the Development and Improvement of Agri-Food Resources (BIOGEST-SITEIA) University of Modena and Reggio Emilia, P.le Europa 1, 42124 Reggio nell'Emilia (RE), Italy
| | - Marco Moretto
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Elena Barghini
- Department of Agricultural, Food, and Environmental Sciences, University of Pisa, Pisa I-56124, Italy
| | - Flavia Mascagni
- Department of Agricultural, Food, and Environmental Sciences, University of Pisa, Pisa I-56124, Italy
| | - Lucia Natali
- Department of Agricultural, Food, and Environmental Sciences, University of Pisa, Pisa I-56124, Italy
| | - Matteo Brilli
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy.,Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, V.le dell'Università 16, 35020 Legnaro (PD), Italy.,Dipartimento di Bioscienze e Centro di Ricerca Pediatrica Romeo ed Enrica Invernizzi, Università degli Studi di Milano, Via Celoria 26, 20133 Milano
| | - Alexandre Lomsadze
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech, Atlanta, Georgia
| | - Paolo Sonego
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Lara Giongo
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Michael Alonge
- Driscoll's Strawberry Associates, Cassin Ranch, 121 Silliman Drive, Watsonville, California
| | - Riccardo Velasco
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Claudio Varotto
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Nada Šurbanovski
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Mark Borodovsky
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova Agripolis, V.le dell'Università 16, 35020 Legnaro (PD), Italy
| | - Judson A Ward
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Tech, Atlanta, Georgia
| | - Kristof Engelen
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Andrea Cavallini
- Department of Agricultural, Food, and Environmental Sciences, University of Pisa, Pisa I-56124, Italy
| | - Alessandro Cestaro
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy
| | - Daniel James Sargent
- Department of Genomics and Biology of Fruit Crops, Research and Innovation Centre, Fondazione Edmund Mach (FEM) Via E. Mach 1, 38010 San Michele all'Adige, Italy.,Driscoll's Genetics Limited, East Malling Enterprise Centre, New Road, East Malling, Kent ME19 6BJ, UK
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Hitting the Wall-Sensing and Signaling Pathways Involved in Plant Cell Wall Remodeling in Response to Abiotic Stress. PLANTS 2018; 7:plants7040089. [PMID: 30360552 PMCID: PMC6313904 DOI: 10.3390/plants7040089] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/16/2018] [Accepted: 10/16/2018] [Indexed: 11/24/2022]
Abstract
Plant cells are surrounded by highly dynamic cell walls that play important roles regulating aspects of plant development. Recent advances in visualization and measurement of cell wall properties have enabled accumulation of new data about wall architecture and biomechanics. This has resulted in greater understanding of the dynamics of cell wall deposition and remodeling. The cell wall is the first line of defense against different adverse abiotic and biotic environmental influences. Different abiotic stress conditions such as salinity, drought, and frost trigger production of Reactive Oxygen Species (ROS) which act as important signaling molecules in stress activated cellular responses. Detection of ROS by still-elusive receptors triggers numerous signaling events that result in production of different protective compounds or even cell death, but most notably in stress-induced cell wall remodeling. This is mediated by different plant hormones, of which the most studied are jasmonic acid and brassinosteroids. In this review we highlight key factors involved in sensing, signal transduction, and response(s) to abiotic stress and how these mechanisms are related to cell wall-associated stress acclimatization. ROS, plant hormones, cell wall remodeling enzymes and different wall mechanosensors act coordinately during abiotic stress, resulting in abiotic stress wall acclimatization, enabling plants to survive adverse environmental conditions.
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Phytosterols and their derivatives: Structural diversity, distribution, metabolism, analysis, and health-promoting uses. Prog Lipid Res 2018; 70:35-61. [DOI: 10.1016/j.plipres.2018.04.001] [Citation(s) in RCA: 208] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 01/08/2023]
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23
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Ferrer A, Altabella T, Arró M, Boronat A. Emerging roles for conjugated sterols in plants. Prog Lipid Res 2017; 67:27-37. [DOI: 10.1016/j.plipres.2017.06.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 06/22/2017] [Indexed: 11/29/2022]
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24
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Parra-Lobato MC, Paredes MA, Labrador J, Saucedo-García M, Gavilanes-Ruiz M, Gomez-Jimenez MC. Localization of Sphingolipid Enriched Plasma Membrane Regions and Long-Chain Base Composition during Mature-Fruit Abscission in Olive. FRONTIERS IN PLANT SCIENCE 2017; 8:1138. [PMID: 28706527 PMCID: PMC5489598 DOI: 10.3389/fpls.2017.01138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/13/2017] [Indexed: 05/20/2023]
Abstract
Sphingolipids, found in membranes of eukaryotic cells, have been demonstrated to carry out functions in various processes in plant cells. However, the roles of these lipids in fruit abscission remain to be determined in plants. Biochemical and fluorescence microscopy imaging approach has been adopted to investigate the accumulation and distribution of sphingolipids during mature-fruit abscission in olive (Olea europaea L. cv. Picual). Here, a lipid-content analysis in live protoplasts of the olive abscission zone (AZ) was made with fluorescent dyes and lipid analogs, particularly plasma membrane sphingolipid-enriched domains, and their dynamics were investigated in relation to the timing of mature-fruit abscission. In olive AZ cells, the measured proportion of both polar lipids and sphingolipids increased as well as endocytosis was stimulated during mature-fruit abscission. Likewise, mature-fruit abscission resulted in quantitative and qualitative changes in sphingolipid long-chain bases (LCBs) in the olive AZ. The total LCB increase was due essentially to the increase of t18:1(8E) LCBs, suggesting that C-4 hydroxylation and Δ8 desaturation with a preference for (E)-isomer formation were quantitatively the most important sphingolipids in olive AZ during abscission. However, our results also showed a specific association between the dihydroxylated LCB sphinganine (d18:0) and the mature-fruit abscission. These results indicate a clear correlation between the sphingolipid composition and mature-fruit abscission. Moreover, measurements of endogenous sterol levels in the olive AZ revealed that it accumulated sitosterol and campesterol with a concomitant decrease in cycloartenol during abscission. In addition, underlying the distinct sterol composition of AZ during abscission, genes for key biosynthetic enzymes for sterol synthesis, for obtusifoliol 14α-demethylase (CYP51) and C-24 sterol methyltransferase2 (SMT2), were up-regulated during mature-fruit abscission, in parallel to the increase in sitosterol content. The differences found in AZ lipid content and the relationships established between LCB and sterol composition, offer new insights about sphingolipids and sterols in abscission.
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Affiliation(s)
| | - Miguel A. Paredes
- Department of Plant Physiology, University of ExtremaduraBadajoz, Spain
| | - Juana Labrador
- Department of Plant Physiology, University of ExtremaduraBadajoz, Spain
| | - Mariana Saucedo-García
- Institute of Agricultural Sciences, Autonomous University of the State of HidalgoTulancingo, Mexico
| | - Marina Gavilanes-Ruiz
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de MéxicoMexico City, Mexico
| | - Maria C. Gomez-Jimenez
- Department of Plant Physiology, University of ExtremaduraBadajoz, Spain
- *Correspondence: Maria C. Gomez-Jimenez,
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Ramirez-Estrada K, Castillo N, Lara JA, Arró M, Boronat A, Ferrer A, Altabella T. Tomato UDP-Glucose Sterol Glycosyltransferases: A Family of Developmental and Stress Regulated Genes that Encode Cytosolic and Membrane-Associated Forms of the Enzyme. FRONTIERS IN PLANT SCIENCE 2017. [PMID: 28649260 PMCID: PMC5465953 DOI: 10.3389/fpls.2017.00984] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Sterol glycosyltransferases (SGTs) catalyze the glycosylation of the free hydroxyl group at C-3 position of sterols to produce sterol glycosides. Glycosylated sterols and free sterols are primarily located in cell membranes where in combination with other membrane-bound lipids play a key role in modulating their properties and functioning. In contrast to most plant species, those of the genus Solanum contain very high levels of glycosylated sterols, which in the case of tomato may account for more than 85% of the total sterol content. In this study, we report the identification and functional characterization of the four members of the tomato (Solanum lycopersicum cv. Micro-Tom) SGT gene family. Expression of recombinant SlSGT proteins in E. coli cells and N. benthamiana leaves demonstrated the ability of the four enzymes to glycosylate different sterol species including cholesterol, brassicasterol, campesterol, stigmasterol, and β-sitosterol, which is consistent with the occurrence in their primary structure of the putative steroid-binding domain found in steroid UDP-glucuronosyltransferases and the UDP-sugar binding domain characteristic for a superfamily of nucleoside diphosphosugar glycosyltransferases. Subcellular localization studies based on fluorescence recovery after photobleaching and cell fractionation analyses revealed that the four tomato SGTs, like the Arabidopsis SGTs UGT80A2 and UGT80B1, localize into the cytosol and the PM, although there are clear differences in their relative distribution between these two cell fractions. The SlSGT genes have specialized but still largely overlapping expression patterns in different organs of tomato plants and throughout the different stages of fruit development and ripening. Moreover, they are differentially regulated in response to biotic and abiotic stress conditions. SlSGT4 expression increases markedly in response to osmotic, salt, and cold stress, as well as upon treatment with abscisic acid and methyl jasmonate. Stress-induced SlSGT2 expression largely parallels that of SlSGT4. On the contrary, SlSGT1 and SlSGT3 expression remains almost unaltered under the tested stress conditions. Overall, this study contributes to broaden the current knowledge on plant SGTs and provides support to the view that tomato SGTs play overlapping but not completely redundant biological functions involved in mediating developmental and stress responses.
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Affiliation(s)
- Karla Ramirez-Estrada
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
| | - Nídia Castillo
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
| | - Juan A. Lara
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
| | - Monserrat Arró
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
| | - Albert Boronat
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of BarcelonaBarcelona, Spain
| | - Albert Ferrer
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
- *Correspondence: Teresa Altabella, Albert Ferrer,
| | - Teresa Altabella
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG) (CSIC-IRTA-UAB-UB)Barcelona, Spain
- Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of BarcelonaBarcelona, Spain
- *Correspondence: Teresa Altabella, Albert Ferrer,
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26
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Rao X, Dixon RA. Brassinosteroid Mediated Cell Wall Remodeling in Grasses under Abiotic Stress. FRONTIERS IN PLANT SCIENCE 2017; 8:806. [PMID: 28567047 PMCID: PMC5434148 DOI: 10.3389/fpls.2017.00806] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 04/28/2017] [Indexed: 05/19/2023]
Abstract
Unlike animals, plants, being sessile, cannot escape from exposure to severe abiotic stresses such as extreme temperature and water deficit. The dynamic structure of plant cell wall enables them to undergo compensatory changes, as well as maintain physical strength, with changing environments. Plant hormones known as brassinosteroids (BRs) play a key role in determining cell wall expansion during stress responses. Cell wall deposition differs between grasses (Poaceae) and dicots. Grass species include many important food, fiber, and biofuel crops. In this article, we focus on recent advances in BR-regulated cell wall biosynthesis and remodeling in response to stresses, comparing our understanding of the mechanisms in grass species with those in the more studied dicots. A more comprehensive understanding of BR-mediated changes in cell wall integrity in grass species will benefit the development of genetic tools to improve crop productivity, fiber quality and plant biomass recalcitrance.
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Affiliation(s)
- Xiaolan Rao
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, DentonTX, United States
- BioEnergy Science Center, US Department of Energy, Oak RidgeTN, United States
- *Correspondence: Xiaolan Rao,
| | - Richard A. Dixon
- BioDiscovery Institute and Department of Biological Sciences, University of North Texas, DentonTX, United States
- BioEnergy Science Center, US Department of Energy, Oak RidgeTN, United States
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27
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Manzano D, Andrade P, Caudepón D, Altabella T, Arró M, Ferrer A. Suppressing Farnesyl Diphosphate Synthase Alters Chloroplast Development and Triggers Sterol-Dependent Induction of Jasmonate- and Fe-Related Responses. PLANT PHYSIOLOGY 2016; 172:93-117. [PMID: 27382138 PMCID: PMC5074618 DOI: 10.1104/pp.16.00431] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 06/30/2016] [Indexed: 05/22/2023]
Abstract
Farnesyl diphosphate synthase (FPS) catalyzes the synthesis of farnesyl diphosphate from isopentenyl diphosphate and dimethylallyl diphosphate. Arabidopsis (Arabidopsis thaliana) contains two genes (FPS1 and FPS2) encoding FPS. Single fps1 and fps2 knockout mutants are phenotypically indistinguishable from wild-type plants, while fps1/fps2 double mutants are embryo lethal. To assess the effect of FPS down-regulation at postembryonic developmental stages, we generated Arabidopsis conditional knockdown mutants expressing artificial microRNAs devised to simultaneously silence both FPS genes. Induction of silencing from germination rapidly caused chlorosis and a strong developmental phenotype that led to seedling lethality. However, silencing of FPS after seed germination resulted in a slight developmental delay only, although leaves and cotyledons continued to show chlorosis and altered chloroplasts. Metabolomic analyses also revealed drastic changes in the profile of sterols, ubiquinones, and plastidial isoprenoids. RNA sequencing and reverse transcription-quantitative polymerase chain reaction transcriptomic analysis showed that a reduction in FPS activity levels triggers the misregulation of genes involved in biotic and abiotic stress responses, the most prominent one being the rapid induction of a set of genes related to the jasmonic acid pathway. Down-regulation of FPS also triggered an iron-deficiency transcriptional response that is consistent with the iron-deficient phenotype observed in FPS-silenced plants. The specific inhibition of the sterol biosynthesis pathway by chemical and genetic blockage mimicked these transcriptional responses, indicating that sterol depletion is the primary cause of the observed alterations. Our results highlight the importance of sterol homeostasis for normal chloroplast development and function and reveal important clues about how isoprenoid and sterol metabolism is integrated within plant physiology and development.
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Affiliation(s)
- David Manzano
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Paola Andrade
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Daniel Caudepón
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Teresa Altabella
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Montserrat Arró
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Albert Ferrer
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics, CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain (D.M., P.A., D.C., T.A., M.A., A.F.); andDepartment of Biochemistry and Molecular Biology (D.M., P.A., D.C., M.A., A.F.) and Plant Physiology Unit (T.A.), Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
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28
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Nakamoto M, Schmit AC, Heintz D, Schaller H, Ohta D. Diversification of sterol methyltransferase enzymes in plants and a role for β-sitosterol in oriented cell plate formation and polarized growth. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 84:860-74. [PMID: 26426526 DOI: 10.1111/tpj.13043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 05/06/2023]
Abstract
Phytosterols are classified into C24-ethylsterols and C24-methylsterols according to the different C24-alkylation levels conferred by two types of sterol methyltransferases (SMTs). The first type of SMT (SMT1) is widely conserved, whereas the second type (SMT2) has diverged in charophytes and land plants. The Arabidopsis smt2 smt3 mutant is defective in the SMT2 step, leading to deficiency in C24-ethylsterols while the C24-methylsterol pathway is unchanged. smt2 smt3 plants exhibit severe dwarfism and abnormal development throughout their life cycle, with irregular cell division followed by collapsed cell files. Preprophase bands are occasionally formed in perpendicular directions in adjacent cells, and abnormal phragmoplasts with mislocalized KNOLLE syntaxin and tubulin are observed. Defects in auxin-dependent processes are exemplified by mislocalizations of the PIN2 auxin efflux carrier due to disrupted cell division and failure to distribute PIN2 asymmetrically after cytokinesis. Although endocytosis of PIN2-GFP from the plasma membrane (PM) is apparently unaffected in smt2 smt3, strong inhibition of the endocytic recycling is associated with a remarkable reduction in the level of PIN2-GFP on the PM. Aberrant localization of the cytoplasmic linker associated protein (CLASP) and microtubules is implicated in the disrupted endocytic recycling in smt2 smt3. Exogenous C24-ethylsterols partially recover lateral root development and auxin distribution in smt2 smt3 roots. These results indicate that C24-ethylsterols play a crucial role in division plane determination, directional auxin transport, and polar growth. It is proposed that the divergence of SMT2 genes together with the ability to produce C24-ethylsterols were critical events to achieve polarized growth in the plant lineage.
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Affiliation(s)
- Masatoshi Nakamoto
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 599-8531, Sakai, Japan
| | - Anne-Catherine Schmit
- Institut de Biologie Moléculaire des Plantes, CNRS, UPR2357, Conventionné Avec l'Université de Strasbourg, 67084, Strasbourg, France
| | - Dimitri Heintz
- Institut de Biologie Moléculaire des Plantes, CNRS, UPR2357, Conventionné Avec l'Université de Strasbourg, 67084, Strasbourg, France
| | - Hubert Schaller
- Institut de Biologie Moléculaire des Plantes, CNRS, UPR2357, Conventionné Avec l'Université de Strasbourg, 67084, Strasbourg, France
| | - Daisaku Ohta
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 599-8531, Sakai, Japan
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Gas-Pascual E, Simonovik B, Schaller H, Bach TJ. Inhibition of Cycloartenol Synthase (CAS) Function in Tobacco BY-2 Cells. Lipids 2015; 50:761-72. [PMID: 26033687 DOI: 10.1007/s11745-015-4036-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 05/15/2015] [Indexed: 01/06/2023]
Abstract
Tobacco BY-2 cell suspensions are our preferred model for studying isoprenoid biosynthesis pathways, due to their easy genetic transformation and the efficient absorption of metabolic precursors, intermediates, and/or inhibitors. Using this model system, we have analyzed the effects of chemical and genetic blockage of cycloartenol synthase (CAS, EC 5.4.99.8), an oxidosqualene cyclase that catalyzes the first committed step in the sterol pathway of plants. BY-2 cells were treated with RO 48-8071, a potent inhibitor of oxidosqualene cyclization. Short-term treatments (24 h) resulted in accumulation of oxidosqualene with no changes in the final sterol products. Interestingly, long-term treatments (6 days) induced down-regulation in gene expression not only of CAS but also of the SMT2 gene coding sterol methyltransferase 2 (EC 2.1.1.41). This explains some of the increase in 24-methyl sterols at the expense of the 24-ethyl sterols stigmasterol and sitosterol. In our alternative strategy, CAS gene expression was partially blocked by using an inducible artificial microRNA. The limited effectiveness of this approach might be explained by some dependence of the machinery for RNAi formation on an operating MVA/sterol pathway. For comparison we checked the effect of RO 48-8071 on a green cell suspension of Arabidopsis and on seedlings, containing a small spectrum of triterpenes besides phytosterols. Triterpenes remained essentially unaffected, but phytosterol accumulation was clearly diminished.
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Affiliation(s)
- Elisabet Gas-Pascual
- Department of Horticulture and Crop Science, The Ohio State University, Wooster, OH, 44691, USA
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Moscatelli A, Gagliardi A, Maneta-Peyret L, Bini L, Stroppa N, Onelli E, Landi C, Scali M, Idilli AI, Moreau P. Characterisation of detergent-insoluble membranes in pollen tubes of Nicotiana tabacum (L.). Biol Open 2015; 4:378-99. [PMID: 25701665 PMCID: PMC4359744 DOI: 10.1242/bio.201410249] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Pollen tubes are the vehicle for sperm cell delivery to the embryo sac during fertilisation of Angiosperms. They provide an intriguing model for unravelling mechanisms of growing to extremes. The asymmetric distribution of lipids and proteins in the pollen tube plasma membrane modulates ion fluxes and actin dynamics and is maintained by a delicate equilibrium between exocytosis and endocytosis. The structural constraints regulating polarised secretion and asymmetric protein distribution on the plasma membrane are mostly unknown. To address this problem, we investigated whether ordered membrane microdomains, namely membrane rafts, might contribute to sperm cell delivery. Detergent insoluble membranes, rich in sterols and sphingolipids, were isolated from tobacco pollen tubes. MALDI TOF/MS analysis revealed that actin, prohibitins and proteins involved in methylation reactions and in phosphoinositide pattern regulation are specifically present in pollen tube detergent insoluble membranes. Tubulins, voltage-dependent anion channels and proteins involved in membrane trafficking and signalling were also present. This paper reports the first evidence of membrane rafts in Angiosperm pollen tubes, opening new perspectives on the coordination of signal transduction, cytoskeleton dynamics and polarised secretion.
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Affiliation(s)
- Alessandra Moscatelli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Assunta Gagliardi
- Laboratorio di Proteomica Funzionale, Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Lilly Maneta-Peyret
- Laboratoire de Biogenèse Membranaire, Université Bordeaux Segalen, 71 Avenue Edouard Bourlaux, 33883 Villenave d'Ornon, France
| | - Luca Bini
- Laboratorio di Proteomica Funzionale, Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Nadia Stroppa
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Elisabetta Onelli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Claudia Landi
- Laboratorio di Proteomica Funzionale, Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Monica Scali
- Dipartimento di Scienze della Vita, Università degli Studi di Siena, Via P. A. Mattioli 4, 53100 Siena, Italy
| | - Aurora Irene Idilli
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy Present address: Institute of Biophysics, National Research Council and FBK, 38123 Trento, Italy
| | - Patrick Moreau
- Laboratoire de Biogenèse Membranaire, Université Bordeaux Segalen, 71 Avenue Edouard Bourlaux, 33883 Villenave d'Ornon, France
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Stucky DF, Arpin JC, Schrick K. Functional diversification of two UGT80 enzymes required for steryl glucoside synthesis in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:189-201. [PMID: 25316063 PMCID: PMC4265157 DOI: 10.1093/jxb/eru410] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Steryl glucosides (SG) are abundant steroid conjugates in plant membranes. Beyond structural roles in lipid bilayers, functions in sugar transport, storage, and/or signalling are predicted. UDP-glucose:sterol glucosyltransferase 80A2 (UGT80A2) and UGT80B1, which share similarity to fungal counterparts, are implicated in SG synthesis in Arabidopsis thaliana. A third related enzyme, which seems specific to the plant lineage, is encoded by UGT713B1/At5g24750. Genetic and biochemical approaches were employed to determine the role of each UGT gene in the production of specific SGs and acyl SGs (ASGs). Using direct infusion electrospray ionization tandem mass spectrometry (ESI-MS/MS), SG and acyl SG (ASG) contents of ugt80 and ugt713 mutants, and triple and double mutants were profiled in seeds. In vitro enzyme assays were performed to assay substrate preferences. Both UGT80A2 and UGT80B1, but not UGT713B1 were shown to be coordinately down-regulated during seed imbibition when SG levels decline, consistent with similar functions as UGT80 enzymes. UGT80A2 was found to be required for normal levels of major SGs in seeds, whereas UGT80B1 is involved in accumulation of minor SG and ASG compounds. Although the results demonstrate specific activities for UGT80A2 and UGT80B1, a role for UGT713B1 in SG synthesis was not supported. The data show that UGT80A2, the more highly conserved enzyme, is responsible for the bulk production of SGs in seeds, whereas UGT80B1 plays a critical accessory role. This study extends our knowledge of UGT80 enzymes and provides evidence for specialized functions for distinct classes of SG and ASG molecules in plants.
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Affiliation(s)
- Daniel F Stucky
- Division of Biology, Kansas State University, Manhattan, KS 66506-4901, USA Molecular, Cellular and Developmental Biology, Kansas State University, Manhattan, KS 66506-4901, USA
| | - James C Arpin
- Division of Biology, Kansas State University, Manhattan, KS 66506-4901, USA
| | - Kathrin Schrick
- Division of Biology, Kansas State University, Manhattan, KS 66506-4901, USA Molecular, Cellular and Developmental Biology, Kansas State University, Manhattan, KS 66506-4901, USA Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, KS 66506-4901, USA
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Onelli E, Idilli AI, Moscatelli A. Emerging roles for microtubules in angiosperm pollen tube growth highlight new research cues. FRONTIERS IN PLANT SCIENCE 2015; 6:51. [PMID: 25713579 PMCID: PMC4322846 DOI: 10.3389/fpls.2015.00051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/20/2015] [Indexed: 05/21/2023]
Abstract
In plants, actin filaments have an important role in organelle movement and cytoplasmic streaming. Otherwise microtubules (MTs) have a role in restricting organelles to specific areas of the cell and in maintaining organelle morphology. In somatic plant cells, MTs also participate in cell division and morphogenesis, allowing cells to take their definitive shape in order to perform specific functions. In the latter case, MTs influence assembly of the cell wall, controlling the delivery of enzymes involved in cellulose synthesis and of wall modulation material to the proper sites. In angiosperm pollen tubes, organelle movement is generally attributed to the acto-myosin system, the main role of which is in distributing organelles in the cytoplasm and in carrying secretory vesicles to the apex for polarized growth. Recent data on membrane trafficking suggests a role of MTs in fine delivery and repositioning of vesicles to sustain pollen tube growth. This review examines the role of MTs in secretion and endocytosis, highlighting new research cues regarding cell wall construction and pollen tube-pistil crosstalk, that help unravel the role of MTs in polarized growth.
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Affiliation(s)
| | - Aurora I. Idilli
- Institute of Biophysics, National Research Council and Fondazione Bruno Kessler, Trento, Italy
| | - Alessandra Moscatelli
- Department of Biosciences, University of Milan, Milan, Italy
- *Correspondence: Alessandra Moscatelli, Department of Biosciences, University of Milan, Via Celoria, 26, 20113 Milano, Italy e-mail:
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Li S, Bashline L, Lei L, Gu Y. Cellulose synthesis and its regulation. THE ARABIDOPSIS BOOK 2014; 12:e0169. [PMID: 24465174 PMCID: PMC3894906 DOI: 10.1199/tab.0169] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Cellulose, the most abundant biopolymer synthesized on land, is made of linear chains of ß (1-4) linked D-glucose. As a major structural component of the cell wall, cellulose is important not only for industrial use but also for plant growth and development. Cellulose microfibrils are tethered by other cell wall polysaccharides such as hemicellulose, pectin, and lignin. In higher plants, cellulose is synthesized by plasma membrane-localized rosette cellulose synthase complexes. Despite the recent advances using a combination of molecular genetics, live cell imaging, and spectroscopic tools, many aspects of the cellulose synthesis remain a mystery. In this chapter, we highlight recent research progress towards understanding the mechanism of cellulose synthesis in Arabidopsis.
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Affiliation(s)
- Shundai Li
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802
| | - Logan Bashline
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802
| | - Lei Lei
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802
| | - Ying Gu
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA 16802
- Address correspondence to
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Lei L, Li S, Bashline L, Gu Y. Dissecting the molecular mechanism underlying the intimate relationship between cellulose microfibrils and cortical microtubules. FRONTIERS IN PLANT SCIENCE 2014; 5:90. [PMID: 24659994 PMCID: PMC3952479 DOI: 10.3389/fpls.2014.00090] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 02/24/2014] [Indexed: 05/04/2023]
Abstract
A central question in plant cell development is how the cell wall determines directional cell expansion and therefore the final shape of the cell. As the major load-bearing component of the cell wall, cellulose microfibrils are laid down transversely to the axis of elongation, thus forming a spring-like structure that reinforces the cell laterally and while favoring longitudinal expansion in most growing cells. Mounting evidence suggests that cortical microtubules organize the deposition of cellulose microfibrils, but the precise molecular mechanisms linking microtubules to cellulose organization have remained unclear until the recent discovery of cellulose synthase interactive protein 1 , a linker protein between the cortical microtubules and the cellulose biosynthesizing machinery. In this review, we will focus on the intimate relationship between cellulose microfibrils and cortical microtubules, in particular, we will discuss microtubule arrangement and cell wall architecture, the linkage between cellulose synthase complexes and microtubules, and the feedback mechanisms between cell wall and microtubules.
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Affiliation(s)
| | | | | | - Ying Gu
- *Correspondence: Ying Gu, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA e-mail:
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35
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Zauber H, Burgos A, Garapati P, Schulze WX. Plasma membrane lipid-protein interactions affect signaling processes in sterol-biosynthesis mutants in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2014; 5:78. [PMID: 24672530 PMCID: PMC3957024 DOI: 10.3389/fpls.2014.00078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/18/2014] [Indexed: 05/06/2023]
Abstract
The plasma membrane is an important organelle providing structure, signaling and transport as major biological functions. Being composed of lipids and proteins with different physicochemical properties, the biological functions of membranes depend on specific protein-protein and protein-lipid interactions. Interactions of proteins with their specific sterol and lipid environment were shown to be important factors for protein recruitment into sub-compartmental structures of the plasma membrane. System-wide implications of altered endogenous sterol levels for membrane functions in living cells were not studied in higher plant cells. In particular, little is known how alterations in membrane sterol composition affect protein and lipid organization and interaction within membranes. Here, we conducted a comparative analysis of the plasma membrane protein and lipid composition in Arabidopsis sterol-biosynthesis mutants smt1 and ugt80A2;B1. smt1 shows general alterations in sterol composition while ugt80A2;B1 is significantly impaired in sterol glycosylation. By systematically analyzing different cellular fractions and combining proteomic with lipidomic data we were able to reveal contrasting alterations in lipid-protein interactions in both mutants, with resulting differential changes in plasma membrane signaling status.
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Affiliation(s)
- Henrik Zauber
- Max Planck Institute of Molecular Plant PhysiologyGolm, Germany
- Max-Delbrück-Centrum für Molekulare MedizinBerlin-Buch, Germany
| | - Asdrubal Burgos
- Max Planck Institute of Molecular Plant PhysiologyGolm, Germany
| | | | - Waltraud X. Schulze
- Max Planck Institute of Molecular Plant PhysiologyGolm, Germany
- Plant Systems Biology, University of HohenheimStuttgart, Germany
- *Correspondence: Waltraud X. Schulze, Plant Systems Biology, University of Hohenheim, Garbenstrasse 30, Stuttgart 70593, Germany e-mail:
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36
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Zauber H, Burgos A, Garapati P, Schulze WX. Plasma membrane lipid-protein interactions affect signaling processes in sterol-biosynthesis mutants in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2014; 5:78. [PMID: 24672530 DOI: 10.3389/fpls.2014.00078014.00078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/18/2014] [Indexed: 05/22/2023]
Abstract
The plasma membrane is an important organelle providing structure, signaling and transport as major biological functions. Being composed of lipids and proteins with different physicochemical properties, the biological functions of membranes depend on specific protein-protein and protein-lipid interactions. Interactions of proteins with their specific sterol and lipid environment were shown to be important factors for protein recruitment into sub-compartmental structures of the plasma membrane. System-wide implications of altered endogenous sterol levels for membrane functions in living cells were not studied in higher plant cells. In particular, little is known how alterations in membrane sterol composition affect protein and lipid organization and interaction within membranes. Here, we conducted a comparative analysis of the plasma membrane protein and lipid composition in Arabidopsis sterol-biosynthesis mutants smt1 and ugt80A2;B1. smt1 shows general alterations in sterol composition while ugt80A2;B1 is significantly impaired in sterol glycosylation. By systematically analyzing different cellular fractions and combining proteomic with lipidomic data we were able to reveal contrasting alterations in lipid-protein interactions in both mutants, with resulting differential changes in plasma membrane signaling status.
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Affiliation(s)
- Henrik Zauber
- Max Planck Institute of Molecular Plant Physiology Golm, Germany ; Max-Delbrück-Centrum für Molekulare Medizin Berlin-Buch, Germany
| | - Asdrubal Burgos
- Max Planck Institute of Molecular Plant Physiology Golm, Germany
| | | | - Waltraud X Schulze
- Max Planck Institute of Molecular Plant Physiology Golm, Germany ; Plant Systems Biology, University of Hohenheim Stuttgart, Germany
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De Storme N, Geelen D. Callose homeostasis at plasmodesmata: molecular regulators and developmental relevance. FRONTIERS IN PLANT SCIENCE 2014; 5:138. [PMID: 24795733 PMCID: PMC4001042 DOI: 10.3389/fpls.2014.00138] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 03/23/2014] [Indexed: 05/18/2023]
Abstract
Plasmodesmata are membrane-lined channels that are located in the plant cell wall and that physically interconnect the cytoplasm and the endoplasmic reticulum (ER) of adjacent cells. Operating as controllable gates, plasmodesmata regulate the symplastic trafficking of micro- and macromolecules, such as endogenous proteins [transcription factors (TFs)] and RNA-based signals (mRNA, siRNA, etc.), hence mediating direct cell-to-cell communication and long distance signaling. Besides this physiological role, plasmodesmata also form gateways through which viral genomes can pass, largely facilitating the pernicious spread of viral infections. Plasmodesmatal trafficking is either passive (e.g., diffusion) or active and responses both to developmental and environmental stimuli. In general, plasmodesmatal conductivity is regulated by the controlled build-up of callose at the plasmodesmatal neck, largely mediated by the antagonistic action of callose synthases (CalSs) and β-1,3-glucanases. Here, in this theory and hypothesis paper, we outline the importance of callose metabolism in PD SEL control, and highlight the main molecular factors involved. In addition, we also review other proteins that regulate symplastic PD transport, both in a developmental and stress-responsive framework, and discuss on their putative role in the modulation of PD callose turn-over. Finally, we hypothesize on the role of structural sterols in the regulation of (PD) callose deposition and outline putative mechanisms by which this regulation may occur.
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Affiliation(s)
| | - Danny Geelen
- *Correspondence: Danny Geelen, Laboratory for In Vitro Biology and Horticulture, Department of Plant Production, Faculty of Bioscience Engineering, University of Ghent, Coupure Links 653, 9000 Ghent, Belgium e-mail:
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38
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McMichael CM, Bednarek SY. Cytoskeletal and membrane dynamics during higher plant cytokinesis. THE NEW PHYTOLOGIST 2013; 197:1039-1057. [PMID: 23343343 DOI: 10.1111/nph.12122] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 12/02/2012] [Indexed: 05/08/2023]
Abstract
Following mitosis, cytoplasm, organelles and genetic material are partitioned into daughter cells through the process of cytokinesis. In somatic cells of higher plants, two cytoskeletal arrays, the preprophase band and the phragmoplast, facilitate the positioning and de novo assembly of the plant-specific cytokinetic organelle, the cell plate, which develops across the division plane and fuses with the parental plasma membrane to yield distinct new cells. The coordination of cytoskeletal and membrane dynamics required to initiate, assemble and shape the cell plate as it grows toward the mother cell cortex is dependent upon a large array of proteins, including molecular motors, membrane tethering, fusion and restructuring factors and biosynthetic, structural and regulatory elements. This review focuses on the temporal and molecular requirements of cytokinesis in somatic cells of higher plants gleaned from recent studies using cell biology, genetics, pharmacology and biochemistry.
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Affiliation(s)
- Colleen M McMichael
- Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Dr, Madison, WI, 53713, USA
| | - Sebastian Y Bednarek
- Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Dr, Madison, WI, 53713, USA
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Griffiths EJ, Hu G, Fries B, Caza M, Wang J, Gsponer J, Gates-Hollingsworth MA, Kozel TR, De Repentigny L, Kronstad JW. A defect in ATP-citrate lyase links acetyl-CoA production, virulence factor elaboration and virulence in Cryptococcus neoformans. Mol Microbiol 2012; 86:1404-23. [PMID: 23078142 DOI: 10.1111/mmi.12065] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2012] [Indexed: 01/25/2023]
Abstract
The interaction of Cryptococcus neoformans with phagocytic cells of the innate immune system is a key step in disseminated disease leading to meningoencephalitis in immunocompromised individuals. Transcriptional profiling of cryptococcal cells harvested from cell culture medium or from macrophages found differential expression of metabolic and other functions during fungal adaptation to the intracellular environment. We focused on the ACL1 gene for ATP-citrate lyase, which converts citrate to acetyl-CoA, because this gene showed elevated transcript levels in macrophages and because of the importance of acetyl-CoA as a central metabolite. Mutants lacking ACL1 showed delayed growth on medium containing glucose, reduced cellular levels of acetyl-CoA, defective production of virulence factors, increased susceptibility to the antifungal drug fluconazole and decreased survival within macrophages. Importantly, acl1 mutants were unable to cause disease in a murine inhalation model, a phenotype that was more extreme than other mutants with defects in acetyl-CoA production (e.g. an acetyl-CoA synthetase mutant). Loss of virulence is likely due to perturbation of critical physiological interconnections between virulence factor expression and metabolism in C. neoformans. Phylogenetic analysis and structural modelling of cryptococcal Acl1 identified three indels unique to fungal protein sequences; these differences may provide opportunities for the development of pathogen-specific inhibitors.
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Affiliation(s)
- Emma J Griffiths
- The Michael Smith Laboratories, Department of Microbiology and Immunology, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada, V6T 1Z4
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DeBolt S, Estevez JM. Current challenges in plant cell walls: editorial overview. FRONTIERS IN PLANT SCIENCE 2012; 3:232. [PMID: 23087699 PMCID: PMC3473367 DOI: 10.3389/fpls.2012.00232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 09/27/2012] [Indexed: 06/01/2023]
Affiliation(s)
- Seth DeBolt
- Department of Horticulture, University of KentuckyLexington, KY, USA
| | - Jose M. Estevez
- Laboratorio de Fisiología y Biología Molecular, University of Buenos Aires and Consejo Nacional de Investigaciones Científicas y Técnicas, IFIByNEBuenos aires, Argentina
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