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Saberi Riseh R, Gholizadeh Vazvani M, Taheri A, Kennedy JF. Pectin-associated immune responses in plant-microbe interactions: A review. Int J Biol Macromol 2024; 273:132790. [PMID: 38823736 DOI: 10.1016/j.ijbiomac.2024.132790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 05/04/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
This review explores the role of pectin, a complex polysaccharide found in the plant cell wall, in mediating immune responses during interactions between plants and microbes. The objectives of this study were to investigate the molecular mechanisms underlying pectin-mediated immune responses and to understand how these interactions shape plant-microbe communication. Pectin acts as a signaling molecule, triggering immune responses such as the production of antimicrobial compounds, reinforcement of the cell wall, and activation of defense-related genes. Pectin functions as a target for pathogen-derived enzymes, enabling successful colonization by certain microbial species. The document discusses the complexity of pectin-based immune signaling networks and their modulation by various factors, including pathogen effectors and host proteins. It also emphasizes the importance of understanding the crosstalk between pectin-mediated immunity and other defense pathways to develop strategies for enhancing plant resistance against diseases. The insights gained from this study have implications for the development of innovative approaches to enhance crop protection and disease management in agriculture. Further investigations into the components and mechanisms involved in pectin-mediated immunity will pave the way for future advancements in plant-microbe interaction research.
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Affiliation(s)
- Roohallah Saberi Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, 7718897111 Rafsanjan, Iran.
| | - Mozhgan Gholizadeh Vazvani
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, 7718897111 Rafsanjan, Iran
| | - Abdolhossein Taheri
- Department of Plant Protection, Faculty of Plant Production, University of agricultural Sciences and natural resources of Gorgan, Iran.
| | - John F Kennedy
- Chembiotech Laboratories Ltd, WR15 8FF Tenbury Wells, United Kingdom.
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2
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Nogueira RM, Freitas MDSC, Picoli EADT, Isaias RMDS. Implications of cell wall immunocytochemical profiles on the structural and functional traits of root and stem galls induced by Eriosoma lanigerum on Malus domestica. PROTOPLASMA 2024:10.1007/s00709-024-01939-w. [PMID: 38499789 DOI: 10.1007/s00709-024-01939-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 02/26/2024] [Indexed: 03/20/2024]
Abstract
Alterations in cell wall composition imply in new structural and functional traits in gall developmental sites, even when the inducer is a sucking exophytophagous insect with strict feeding sites as the aphid associated to Malus domestica Borkh. This host plant is an economically important, fruit-bearing species, susceptible to gall induction by the sucking aphid Eriosoma lanigerum Hausmann, 1802. Herein, the immunocytochemical detection of arabinogalactan-proteins (AGPs), pectins, and hemicelluloses using monoclonal antibodies was performed in samples of non-galled roots and stems, and of root and stem galls on M. domestica. The dynamics of these cell wall components was discussed under the structural and functional traits of the galls proximal, median, and distal regions, according to the proximity of E. lanigerum colony feeding site. In the proximal region, the epitopes of AGPs and homogalacturonans (HGs) are related to cell growth and divisions, which result in the overproduction of parenchyma cells both in root and stem galls. In the proximal and median regions, the co-occurrence of HGs and arabinans in the cell walls of parenchyma and secondary tissues favors the nutrient flow and water-holding capacity, while the xylogalacturonans and hemicelluloses may function as additional carbohydrate resources to E. lanigerum. The immunocytochemical profile of the cell walls support the feeding activity of E. lanigerum mainly in the gall proximal region. The similarity of the cell wall components of the gall distal region and the non-galled portions, both in roots and stems, relates to the decrease of the cecidogenetic field the more distant the E. lanigerum colony is.
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3
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Huerta AI, Sancho-Andrés G, Montesinos JC, Silva-Navas J, Bassard S, Pau-Roblot C, Kesten C, Schlechter R, Dora S, Ayupov T, Pelloux J, Santiago J, Sánchez-Rodríguez C. The WAK-like protein RFO1 acts as a sensor of the pectin methylation status in Arabidopsis cell walls to modulate root growth and defense. MOLECULAR PLANT 2023; 16:865-881. [PMID: 37002606 PMCID: PMC10168605 DOI: 10.1016/j.molp.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 12/20/2022] [Accepted: 03/28/2023] [Indexed: 05/04/2023]
Abstract
Most organisms adjust their development according to the environmental conditions. For the majority, this implies the sensing of alterations to cell walls caused by different cues. Despite the relevance of this process, few molecular players involved in cell wall sensing are known and characterized. Here, we show that the wall-associated kinase-like protein RESISTANCE TO FUSARIUM OXYSPORUM 1 (RFO1) is required for plant growth and early defense against Fusarium oxysporum and functions by sensing changes in the pectin methylation levels in the cell wall. The RFO1 dwell time at the plasma membrane is affected by the pectin methylation status at the cell wall, regulating MITOGEN-ACTIVATED PROTEIN KINASE and gene expression. We show that the extracellular domain of RFO1 binds de-methylated pectin in vitro, whose distribution in the cell wall is altered during F. oxysporum infection. Further analyses also indicate that RFO1 is required for the BR-dependent plant growth alteration in response to inhibition of pectin de-methyl-esterase activity at the cell wall. Collectively, our work demonstrates that RFO1 is a sensor of the pectin methylation status that plays a unique dual role in plant growth and defense against vascular pathogens.
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Affiliation(s)
- Apolonio I Huerta
- ETH Zurich, Institute of Molecular Plant Biology (D-BIOL), Zurich, Switzerland
| | | | | | - Javier Silva-Navas
- University of Lausanne, Department of Plant Molecular Biology, Lausanne, Switzerland
| | - Solène Bassard
- UMRT INRAE 1158 BioEcoAgro - BIOPI Biologie des Plantes et Innovation, Université de Picardie, 33 Rue St Leu, 80039 Amiens, France
| | - Corinne Pau-Roblot
- UMRT INRAE 1158 BioEcoAgro - BIOPI Biologie des Plantes et Innovation, Université de Picardie, 33 Rue St Leu, 80039 Amiens, France
| | - Christopher Kesten
- ETH Zurich, Institute of Molecular Plant Biology (D-BIOL), Zurich, Switzerland
| | - Rudolf Schlechter
- ETH Zurich, Institute of Molecular Plant Biology (D-BIOL), Zurich, Switzerland
| | - Susanne Dora
- ETH Zurich, Institute of Molecular Plant Biology (D-BIOL), Zurich, Switzerland
| | - Temurkhan Ayupov
- ETH Zurich, Institute of Molecular Plant Biology (D-BIOL), Zurich, Switzerland
| | - Jérôme Pelloux
- UMRT INRAE 1158 BioEcoAgro - BIOPI Biologie des Plantes et Innovation, Université de Picardie, 33 Rue St Leu, 80039 Amiens, France
| | - Julia Santiago
- University of Lausanne, Department of Plant Molecular Biology, Lausanne, Switzerland
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Golovchenko V, Popov S, Smirnov V, Khlopin V, Vityazev F, Naranmandakh S, Dmitrenok AS, Shashkov AS. Polysaccharides of Salsola passerina: Extraction, Structural Characterization and Antioxidant Activity. Int J Mol Sci 2022; 23:13175. [PMID: 36361966 PMCID: PMC9657462 DOI: 10.3390/ijms232113175] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 11/19/2023] Open
Abstract
The above-ground part of the Salsola passerine was found to contain ~13% (w/w) of polysaccharides extractable with water and aqueous solutions of ammonium oxalate and sodium carbonate. The fractions extracted with aqueous sodium carbonate solutions had the highest yield. The polysaccharides of majority fractions are characterized by similar monosaccharide composition; namely, galacturonic acid and arabinose residues are the principal components of their carbohydrate chains. The present study focused on the determination of antioxidant activity of the extracted polysaccharide fractions and elucidation of the structure of polysaccharides using nuclear magnetic resonance (NMR) spectroscopy. Homogalacturonan (HG), consisting of 1,4-linked residues of α-D-galactopyranosyluronic acid (GalpA), rhamnogalacturonan-I (RG-I), which contains a diglycosyl repeating unit with a strictly alternating sequence of 1,4-linked D-GalpA and 1,2-linked L-rhamnopyranose (Rhap) residues in the backbone, and arabinan, were identified as the structural units of the obtained polysaccharides. HMBC spectra showed that arabinan consisted of alternating regions formed by 3,5-substituted and 1,5-linked arabinofuranose residues, but there was no alternation of these residues in the arabinan structure. Polysaccharide fractions scavenged the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical at 0.2-1.8 mg/mL. The correlation analysis showed that the DPPH scavenging activity of polysaccharide fractions was associated with the content of phenolic compounds (PCs).
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Affiliation(s)
- Victoria Golovchenko
- Institute of Physiology of Federal Research Centre “Komi Science Centre of the Urals Branch of the Russian Academy of Sciences”, 167982 Syktyvkar, Russia
| | - Sergey Popov
- Institute of Physiology of Federal Research Centre “Komi Science Centre of the Urals Branch of the Russian Academy of Sciences”, 167982 Syktyvkar, Russia
| | - Vasily Smirnov
- Institute of Physiology of Federal Research Centre “Komi Science Centre of the Urals Branch of the Russian Academy of Sciences”, 167982 Syktyvkar, Russia
| | - Victor Khlopin
- Institute of Physiology of Federal Research Centre “Komi Science Centre of the Urals Branch of the Russian Academy of Sciences”, 167982 Syktyvkar, Russia
| | - Fedor Vityazev
- Institute of Physiology of Federal Research Centre “Komi Science Centre of the Urals Branch of the Russian Academy of Sciences”, 167982 Syktyvkar, Russia
| | - Shinen Naranmandakh
- School of Arts and Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia
| | - Andrey S. Dmitrenok
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander S. Shashkov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
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Gámez-Arjona FM, Vitale S, Voxeur A, Dora S, Müller S, Sancho-Andrés G, Montesinos JC, Di Pietro A, Sánchez-Rodríguez C. Impairment of the cellulose degradation machinery enhances Fusarium oxysporum virulence but limits its reproductive fitness. SCIENCE ADVANCES 2022; 8:eabl9734. [PMID: 35442735 PMCID: PMC9020665 DOI: 10.1126/sciadv.abl9734] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Fungal pathogens grow in the apoplastic space, in constant contact with the plant cell wall (CW) that hinders microbe progression while representing a source of nutrients. Although numerous fungal CW modifying proteins have been identified, their role during host colonization remains underexplored. Here, we show that the root-infecting plant pathogen Fusarium oxysporum (Fo) does not require its complete arsenal of cellulases to infect the host plant. Quite the opposite: Fo mutants impaired in cellulose degradation become hypervirulent by enhancing the secretion of virulence factors. On the other hand, the reduction in cellulase activity had a severe negative effect on saprophytic growth and microconidia production during the final stages of the Fo infection cycle. These findings enhance our understanding of the function of plant CW degradation on the outcome of host-microbe interactions and reveal an unexpected role of cellulose degradation in a pathogen's reproductive success.
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Affiliation(s)
| | - Stefania Vitale
- Departamento de Genética, Campus de Excelencia Internacional Agroalimentario ceiA3, Universidad de Córdoba, 14014 Córdoba, Spain
| | - Aline Voxeur
- Institut Jean-Pierre Bourgin, INRA, Centre National pour la Recherche Scientifique, AgroParisTech, Université Paris-Saclay, RD10, 78026 Versailles Cedex, France
| | - Susanne Dora
- Department of Biology, ETH Zurich, 8092 Zurich, Switzerland
| | - Sascha Müller
- Department of Biology, ETH Zurich, 8092 Zurich, Switzerland
| | | | | | - Antonio Di Pietro
- Departamento de Genética, Campus de Excelencia Internacional Agroalimentario ceiA3, Universidad de Córdoba, 14014 Córdoba, Spain
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6
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Son SU, Lee SJ, Choi EH, Shin KS. Clarification of the structural features of Rhamnogalacturonan-I type polysaccharide purified from radish leaves. Int J Biol Macromol 2022; 209:923-934. [PMID: 35447261 DOI: 10.1016/j.ijbiomac.2022.04.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/21/2022] [Accepted: 04/06/2022] [Indexed: 11/26/2022]
Abstract
Determining the structure of REPI, an immunostimulatory polysaccharide fraction from radish leaves, is an important health objective. Herein, we show that REP-I contains nine different monosaccharides, including GalA (22.2%), Gal (32.6%), Ara (27.5%), and Rha (10.2%) as main sugars. REP-I was also reacted with β-glucosyl Yariv reagent (29.8%), suggesting the presence of the arabino-β-3,6-galactan. Furthermore, methylated-product analysis revealed that REP-I contains 13 different glycosyl linkages, including 4-linked GalpA (21.0%), 2,4-linked Rhap (7.0%), 4-linked Galp (5.8%), 5-linked Araf (10.1%), and 3,6-linked Galp (7.9%), which are characteristic of RG-I. Microstructural information was obtained by sequential degradation using four linkage-specific glycosylases and β-elimination, with fragments analyzed on the basis of sugar composition, methylation, and MS/MS spectra. The results show that the immunostimulatory activity of REP-I is possibly due to the structure of RG-I, which is composed of a main chain with repeating [→2)-Rhap-(1 → 4)-GalpA-(1→] linkage units and three side-chains: a branched α(1 → 5)arabinan, a β(1 → 4)galactan, and arabino-β-3,6-galactan, which are branched at the C(O)4 position of each Rha residue in the REP-I main chain.
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Affiliation(s)
- Seung-U Son
- Department of Food Science and Biotechnology, Kyonggi University, Suwon 16227, Republic of Korea; Transdisciplinary Major in Learning Health System, Department of Integrated Biomedical and Life Science, Graduate School, Korea University, Seoul 02841, Republic of Korea.
| | - Sue Jung Lee
- KIST Gangneung Institute of Natural Products, Korea Institute of Science and Technology (KIST), Gangneung 25451, Republic of Korea.
| | - Eun Hye Choi
- Department of Food Science and Biotechnology, Kyonggi University, Suwon 16227, Republic of Korea.
| | - Kwang-Soon Shin
- Department of Food Science and Biotechnology, Kyonggi University, Suwon 16227, Republic of Korea.
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7
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Ognyanov M, Remoroza CA, Schols HA, Petkova NT, Georgiev YN. Structural study of a pectic polysaccharide fraction isolated from "mountain tea" (Sideritis scardica Griseb.). Carbohydr Polym 2021; 260:117798. [PMID: 33712146 DOI: 10.1016/j.carbpol.2021.117798] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/23/2021] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
The present study was conducted to investigate the structural characteristics of an acid-extracted polysaccharide fraction from mountain tea. The monosaccharide composition revealed that uronic acids (72.4 mol%) considerably predominated in the fraction, followed by smaller amounts of galactose (14.5 mol%) and glucose (6.2 mol%). The fraction contained mostly a highly methyl-esterified homogalacturonan (HG) - 71 mol%. The pectin had a high molecular weight population (∼60-100 kDa). Enzymatic fingerprinting was employed with a combination of HG degrading enzymes and LC-HILIC-MS, HPAEC, HPSEC to examine the structure in greater detail. Unsaturated oligomers released indicated the presence of large blocks of highly methyl-esterified GalA residues. Furthermore, the presence of blocks of non-esterified GalA residues and partly methyl-esterified and acetylated GalA residues in HG domain was demonstrated. The research findings provide a basis for further investigations regarding biological activity and commercial exploitation of mountain tea.
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Affiliation(s)
- Manol Ognyanov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Laboratory of Biologically Active Substances, 139 Ruski Blvd., 4000, Plovdiv, Bulgaria.
| | - Connie A Remoroza
- Mass Spectrometry Data Center, Biomolecular Measurement Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899-8362, USA.
| | - Henk A Schols
- Wageningen University & Research, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands.
| | - Nadezhda Tr Petkova
- University of Food Technologies, Technological Faculty, Department of Organic Chemistry and Inorganic Chemistry, 26 Maritza Blvd., 4002, Plovdiv, Bulgaria.
| | - Yordan N Georgiev
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Laboratory of Biologically Active Substances, 139 Ruski Blvd., 4000, Plovdiv, Bulgaria.
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8
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Patience NA, Schieppati D, Boffito DC. Continuous and pulsed ultrasound pectin extraction from navel orange peels. ULTRASONICS SONOCHEMISTRY 2021; 73:105480. [PMID: 33601279 PMCID: PMC7898032 DOI: 10.1016/j.ultsonch.2021.105480] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/24/2020] [Accepted: 01/26/2021] [Indexed: 05/10/2023]
Abstract
Pectin is a valuable product (up to 30 $kg-1) that makes-up 20-30% of an orange's peel. The commercial extraction is lengthy (up to 6h) and energy intensive as it requires heating aqueous solutions (60-100 °C). Ultrasound speeds up the extraction process reducing processing time by macroscopic and microscopic mixing by acoustic cavitation. We adopted an ultrasonic horn to deliver a rated power of 500W at amplitudes of 20%, 40%, and 60% with and without pulsation to extract pectin from waste orange peels. These correspond to power densities of 0.08Wml-1, 0.16Wml-1 and 0.24Wml-1, respectively. The extractions operated at a pH of either 2 or 3. The experimental data agree with the fitted values from the statistical model (R2=95.5%). The model confirms our predictions that yield increases with amplitude/power density and decreasing pH. The highest yield was (11%) at a pH of 2 and with continuous ultrasonic irradiation at a power density of 0.24Wml-1. There is only a 1.3% difference between this datum and pulse ultrasound mode (1 s on/1 s off) at the same conditions - a Student's t test confirmed that there was no significant difference in yield between continuous and pulse mode. However, pulsing is more efficient in that it consumes less than half the energy of continuous operation (80kJ vs. 190kJ).
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Affiliation(s)
- N A Patience
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. CV, Montréal, H3C 3A7 Québec, Canada
| | - D Schieppati
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. CV, Montréal, H3C 3A7 Québec, Canada
| | - D C Boffito
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. CV, Montréal, H3C 3A7 Québec, Canada.
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Tsuru C, Umada A, Noma S, Demura M, Hayashi N. Extraction of Pectin from Satsuma Mandarin Orange Peels by Combining Pressurized Carbon Dioxide and Deionized Water: a Green Chemistry Method. FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02644-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Low KE, Xing X, Moote PE, Inglis GD, Venketachalam S, Hahn MG, King ML, Tétard-Jones CY, Jones DR, Willats WGT, Slominski BA, Abbott DW. Combinatorial Glycomic Analyses to Direct CAZyme Discovery for the Tailored Degradation of Canola Meal Non-Starch Dietary Polysaccharides. Microorganisms 2020; 8:microorganisms8121888. [PMID: 33260318 PMCID: PMC7761036 DOI: 10.3390/microorganisms8121888] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022] Open
Abstract
Canola meal (CM), the protein-rich by-product of canola oil extraction, has shown promise as an alternative feedstuff and protein supplement in poultry diets, yet its use has been limited due to the abundance of plant cell wall fibre, specifically non-starch polysaccharides (NSP) and lignin. The addition of exogenous enzymes to promote the digestion of CM NSP in chickens has potential to increase the metabolizable energy of CM. We isolated chicken cecal bacteria from a continuous-flow mini-bioreactor system and selected for those with the ability to metabolize CM NSP. Of 100 isolates identified, Bacteroides spp. and Enterococcus spp. were the most common species with these capabilities. To identify enzymes specifically for the digestion of CM NSP, we used a combination of glycomics techniques, including enzyme-linked immunosorbent assay characterization of the plant cell wall fractions, glycosidic linkage analysis (methylation-GC-MS analysis) of CM NSP and their fractions, bacterial growth profiles using minimal media supplemented with CM NSP, and the sequencing and de novo annotation of bacterial genomes of high-efficiency CM NSP utilizing bacteria. The SACCHARIS pipeline was used to select plant cell wall active enzymes for recombinant production and characterization. This approach represents a multidisciplinary innovation platform to bioprospect endogenous CAZymes from the intestinal microbiota of herbivorous and omnivorous animals which is adaptable to a variety of applications and dietary polysaccharides.
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Affiliation(s)
- Kristin E. Low
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
| | - Xiaohui Xing
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Paul E. Moote
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - G. Douglas Inglis
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Sivasankari Venketachalam
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (S.V.); (M.G.H.)
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Michael G. Hahn
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA; (S.V.); (M.G.H.)
- Center for Bioenergy Innovation, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Department of Plant Biology, University of Georgia, Athens, GA 30602, USA
| | - Marissa L. King
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
| | - Catherine Y. Tétard-Jones
- School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; (C.Y.T.-J.); (W.G.T.W.)
| | - Darryl R. Jones
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
| | - William G. T. Willats
- School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne NE1 7RU, UK; (C.Y.T.-J.); (W.G.T.W.)
| | - Bogdan A. Slominski
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - D. Wade Abbott
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (K.E.L.); (X.X.); (P.E.M.); (G.D.I.); (M.L.K.); (D.R.J.)
- Department of Chemistry and Biochemistry, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
- Correspondence:
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Ognyanov M, Remoroza C, Schols HA, Georgiev YN, Petkova NT, Krystyjan M. Structural, rheological and functional properties of galactose-rich pectic polysaccharide fraction from leek. Carbohydr Polym 2020; 229:115549. [DOI: 10.1016/j.carbpol.2019.115549] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/14/2019] [Accepted: 10/27/2019] [Indexed: 10/25/2022]
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12
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Kirsch R, Kunert G, Vogel H, Pauchet Y. Pectin Digestion in Herbivorous Beetles: Impact of Pseudoenzymes Exceeds That of Their Active Counterparts. Front Physiol 2019; 10:685. [PMID: 31191365 PMCID: PMC6549527 DOI: 10.3389/fphys.2019.00685] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 05/16/2019] [Indexed: 12/11/2022] Open
Abstract
Many protein families harbor pseudoenzymes that have lost the catalytic function of their enzymatically active counterparts. Assigning alternative function and importance to these proteins is challenging. Because the evolution toward pseudoenzymes is driven by gene duplication, they often accumulate in multigene families. Plant cell wall-degrading enzymes (PCWDEs) are prominent examples of expanded gene families. The pectolytic glycoside hydrolase family 28 (GH28) allows herbivorous insects to break down the PCW polysaccharide pectin. GH28 in the Phytophaga clade of beetles contains many active enzymes but also many inactive counterparts. Using functional characterization, gene silencing, global transcriptome analyses, and recordings of life history traits, we found that not only catalytically active but also inactive GH28 proteins are part of the same pectin-digesting pathway. The robustness and plasticity of this pathway and thus its importance for the beetle is supported by extremely high steady-state expression levels and counter-regulatory mechanisms. Unexpectedly, the impact of pseudoenzymes on the pectin-digesting pathway in Phytophaga beetles exceeds even the influence of their active counterparts, such as a lowered efficiency of food-to-energy conversion and a prolongation of the developmental period.
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Affiliation(s)
- Roy Kirsch
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Grit Kunert
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Heiko Vogel
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Yannick Pauchet
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
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John A, Yang J, Liu J, Jiang Y, Yang B. The structure changes of water-soluble polysaccharides in papaya during ripening. Int J Biol Macromol 2018; 115:152-156. [DOI: 10.1016/j.ijbiomac.2018.04.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 03/26/2018] [Accepted: 04/10/2018] [Indexed: 11/16/2022]
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Yang Y, Yu Y, Liang Y, Anderson CT, Cao J. A Profusion of Molecular Scissors for Pectins: Classification, Expression, and Functions of Plant Polygalacturonases. FRONTIERS IN PLANT SCIENCE 2018; 9:1208. [PMID: 30154820 PMCID: PMC6102391 DOI: 10.3389/fpls.2018.01208] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 07/27/2018] [Indexed: 05/21/2023]
Abstract
In plants, the construction, differentiation, maturation, and degradation of the cell wall are essential for development. Pectins, which are major constituents of primary cell walls in eudicots, function in multiple developmental processes through their synthesis, modification, and degradation. Several pectin modifying enzymes regulate pectin degradation via different modes of action. Polygalacturonases (PGs), which function in the last step of pectin degradation, are a crucial class of pectin-modifying enzymes. Based on differences in their hydrolyzing activities, PGs can be divided into three main types: exo-PGs, endo-PGs, and rhamno-PGs. Their functions were initially investigated based on the expression patterns of PG genes and measurements of total PG activity in organs. In most plant species, PGs are encoded by a large, multigene family. However, due to the lack of genome sequencing data in early studies, the number of identified PG genes was initially limited. Little was initially known about the evolution and expression patterns of PG family members in different species. Furthermore, the functions of PGs in cell dynamics and developmental processes, as well as the regulatory pathways that govern these functions, are far from fully understood. In this review, we focus on how recent studies have begun to fill in these blanks. On the basis of identified PG family members in multiple species, we review their structural characteristics, classification, and molecular evolution in terms of plant phylogenetics. We also highlight the diverse expression patterns and biological functions of PGs during various developmental processes, as well as their mechanisms of action in cell dynamic processes. How PG functions are potentially regulated by hormones, transcription factors, environmental factors, pH and Ca2+ is discussed, indicating directions for future research into PG function and regulation.
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Affiliation(s)
- Yang Yang
- Laboratory of Cell and Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture – Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, China
| | - Youjian Yu
- Laboratory of Cell and Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, China
- Department of Horticulture, College of Agriculture and Food Science, Zhejiang A & F University, Hangzhou, China
| | - Ying Liang
- Laboratory of Cell and Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture – Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, China
| | - Charles T. Anderson
- Department of Biology, The Pennsylvania State University, University Park, Pennsylvania, PA, United States
- Center for Lignocellulose Structure and Formation, The Pennsylvania State University, University Park, Pennsylvania, PA, United States
| | - Jiashu Cao
- Laboratory of Cell and Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture – Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, China
- *Correspondence: Jiashu Cao,
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Yang JS, Mu TH, Ma MM. Extraction, structure, and emulsifying properties of pectin from potato pulp. Food Chem 2017; 244:197-205. [PMID: 29120771 DOI: 10.1016/j.foodchem.2017.10.059] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/28/2017] [Accepted: 10/09/2017] [Indexed: 11/29/2022]
Abstract
Effects of HCl, H2SO4, HNO3, citric acid, and acetic acid on the yield, structure, and emulsifying properties of potato pectins were investigated. Results showed that the highest yield (14.34%) was obtained using citric acid, followed by HNO3 (9.83%), HCl (9.72%), H2SO4 (8.38%), and acetic acid (4.08%). The degrees of methylation (37.45%) and acetylation (15.38%), protein content (6.97%), and molecular weight (3.207 × 105 g/mol) were the highest for pectin extracted using acetic acid, and (galactose + arabinose)/rhamnose was 33.34, indicating that it had a highly branched rhamnogalacturonan I domain. Fourier transform infrared spectroscopy showed a specific absorbance peak at 1064 cm-1, which corresponds to the acetyl groups in potato pectins. SEM showed that all potato pectins are morphologically different. The emulsifying activity (EA, 44.97%-47.71%) and emulsion stability (ES, 36.54%-46.00%) of the pectins were influenced by acid types, and were higher than those of commercial citrus and apple pectin.
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Affiliation(s)
- Jin-Shu Yang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No. 2 Yuan Ming Yuan West Road, Haidian District, PO Box 5109, Beijing 100193, China.
| | - Tai-Hua Mu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No. 2 Yuan Ming Yuan West Road, Haidian District, PO Box 5109, Beijing 100193, China.
| | - Meng-Mei Ma
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing, Ministry of Agriculture, No. 2 Yuan Ming Yuan West Road, Haidian District, PO Box 5109, Beijing 100193, China.
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Pectins functionalized biomaterials; a new viable approach for biomedical applications: A review. Int J Biol Macromol 2017; 101:254-272. [DOI: 10.1016/j.ijbiomac.2017.03.029] [Citation(s) in RCA: 160] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 03/03/2017] [Accepted: 03/06/2017] [Indexed: 12/31/2022]
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Diekjürgen D, Grainger DW. Polysaccharide matrices used in 3D in vitro cell culture systems. Biomaterials 2017; 141:96-115. [PMID: 28672214 DOI: 10.1016/j.biomaterials.2017.06.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/14/2017] [Accepted: 06/19/2017] [Indexed: 12/22/2022]
Abstract
Polysaccharides comprise a diverse class of polymeric materials with a history of proven biocompatibility and continual use as biomaterials. Recent focus on new matrices appropriate for three-dimensional (3D) cell culture offers new opportunities to apply polysaccharides as extracellular matrix mimics. However, chemical and structural bases for specific cell-polysaccharide interactions essential for their utility as 3-D cell matrices are not well defined. This review describes how these naturally sourced biomaterials satisfy several key properties for current 3D cell culture needs and can also be synthetically modified or blended with additional components to tailor their cell engagement properties. Beyond their benign interactions with many cell types in cultures, their economical and high quality sourcing, optical clarity for ex situ analytical interrogation and in situ gelation represent important properties of these polymers for 3D cell culture applications. Continued diversification of their versatile glycan chemistry, new bio-synthetic sourcing strategies and elucidation of new cell-specific properties are attractive to expand the polysaccharide polymer utility for cell culture needs. Many 3D cell culture priorities are addressed with the portfolio of polysaccharide materials available and under development. This review provides a critical analysis of their properties, capabilities and challenges in 3D cell culture applications.
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Affiliation(s)
- Dorina Diekjürgen
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112-5820, USA
| | - David W Grainger
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, 84112-5820, USA; Department of Bioengineering, University of Utah, Salt Lake City, UT, 84112-5820, USA.
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Thieme N, Wu VW, Dietschmann A, Salamov AA, Wang M, Johnson J, Singan VR, Grigoriev IV, Glass NL, Somerville CR, Benz JP. The transcription factor PDR-1 is a multi-functional regulator and key component of pectin deconstruction and catabolism in Neurospora crassa. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:149. [PMID: 28616073 PMCID: PMC5469009 DOI: 10.1186/s13068-017-0807-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 04/29/2017] [Indexed: 05/09/2023]
Abstract
BACKGROUND Pectin is an abundant component in many fruit and vegetable wastes and could therefore be an excellent resource for biorefinery, but is currently underutilized. Fungal pectinases already play a crucial role for industrial purposes, such as for foodstuff processing. However, the regulation of pectinase gene expression is still poorly understood. For an optimal utilization of plant biomass for biorefinery and biofuel production, a detailed analysis of the underlying regulatory mechanisms is warranted. In this study, we applied the genetic resources of the filamentous ascomycete species Neurospora crassa to screen for transcription factors that play a major role in pectinase induction. RESULTS The pectin degradation regulator-1 (PDR-1) was identified through a transcription factor mutant screen in N. crassa. The Δpdr-1 mutant exhibited a severe growth defect on pectin and all tested pectin-related poly- and monosaccharides. Biochemical as well as transcriptional analyses of WT and the Δpdr-1 mutant revealed that while PDR-1-mediated gene induction was dependent on the presence of l-rhamnose, it also strongly affected the degradation of the homogalacturonan backbone. The expression of the endo-polygalacturonase gh28-1 was greatly reduced in the Δpdr-1 mutant, while the expression levels of all pectate lyase genes increased. Moreover, a pdr-1 overexpression strain displayed substantially increased pectinase production. Promoter analysis of the PDR-1 regulon allowed refinement of the putative PDR-1 DNA-binding motif. CONCLUSIONS PDR-1 is highly conserved in filamentous ascomycete fungi and is present in many pathogenic and industrially important fungi. Our data demonstrate that the function of PDR-1 in N. crassa combines features of two recently described transcription factors in Aspergillus niger (RhaR) and Botrytis cinerea (GaaR). The results presented in this study contribute to a broader understanding of how pectin degradation is orchestrated in filamentous fungi and how it could be manipulated for optimized pectinase production.
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Affiliation(s)
- Nils Thieme
- HFM, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Vincent W. Wu
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA USA
- Energy Biosciences Institute, University of California, Berkeley, Berkeley, CA USA
| | - Axel Dietschmann
- HFM, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
- Department of Infection Biology, Institute for Clinical Microbiology, Immunology and Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität, Erlangen-Nuremberg, Germany
| | - Asaf A. Salamov
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA USA
| | - Mei Wang
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA USA
| | - Jenifer Johnson
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA USA
| | - Vasanth R. Singan
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA USA
| | - Igor V. Grigoriev
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA USA
- US Department of Energy Joint Genome Institute (JGI), Walnut Creek, CA USA
| | - N. Louise Glass
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA USA
- Energy Biosciences Institute, University of California, Berkeley, Berkeley, CA USA
- Environmental Genomics and System Biology, Lawrence Berkeley National Laboratory, Berkeley, CA USA
| | - Chris R. Somerville
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA USA
- Energy Biosciences Institute, University of California, Berkeley, Berkeley, CA USA
| | - J. Philipp Benz
- HFM, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
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Ognyanov M, Remoroza C, Schols HA, Georgiev Y, Kratchanova M, Kratchanov C. Isolation and structure elucidation of pectic polysaccharide from rose hip fruits (Rosa canina L.). Carbohydr Polym 2016; 151:803-811. [DOI: 10.1016/j.carbpol.2016.06.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/05/2016] [Accepted: 06/06/2016] [Indexed: 01/19/2023]
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20
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Influence of common and excessive enzymatic treatment on juice yield and anthocyanin content and profile during bilberry (Vaccinium myrtillus L.) juice production. Eur Food Res Technol 2016. [DOI: 10.1007/s00217-016-2722-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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22
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Buffetto F, Cornuault V, Rydahl MG, Ropartz D, Alvarado C, Echasserieau V, Le Gall S, Bouchet B, Tranquet O, Verhertbruggen Y, Willats WGT, Knox JP, Ralet MC, Guillon F. The Deconstruction of Pectic Rhamnogalacturonan I Unmasks the Occurrence of a Novel Arabinogalactan Oligosaccharide Epitope. PLANT & CELL PHYSIOLOGY 2015; 56:2181-96. [PMID: 26384432 DOI: 10.1093/pcp/pcv128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 09/02/2015] [Indexed: 05/18/2023]
Abstract
Rhamnogalacturonan I (RGI) is a pectic polysaccharide composed of a backbone of alternating rhamnose and galacturonic acid residues with side chains containing galactose and/or arabinose residues. The structure of these side chains and the degree of substitution of rhamnose residues are extremely variable and depend on species, organs, cell types and developmental stages. Deciphering RGI function requires extending the current set of monoclonal antibodies (mAbs) directed to this polymer. Here, we describe the generation of a new mAb that recognizes a heterogeneous subdomain of RGI. The mAb, INRA-AGI-1, was produced by immunization of mice with RGI oligosaccharides isolated from potato tubers. These oligomers consisted of highly branched RGI backbones substituted with short side chains. INRA-AGI-1 bound specifically to RGI isolated from galactan-rich cell walls and displayed no binding to other pectic domains. In order to identify its RGI-related epitope, potato RGI oligosaccharides were fractionated by anion-exchange chromatography. Antibody recognition was assessed for each chromatographic fraction. INRA-AGI-1 recognizes a linear chain of (1→4)-linked galactose and (1→5)-linked arabinose residues. By combining the use of INRA-AGI-1 with LM5, LM6 and INRA-RU1 mAbs and enzymatic pre-treatments, evidence is presented of spatial differences in RGI motif distribution within individual cell walls of potato tubers and carrot roots. These observations raise questions about the biosynthesis and assembly of pectin structural domains and their integration and remodeling in cell walls.
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Affiliation(s)
- Fanny Buffetto
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France Present address: Institute for Wine Biotechnology, Department of Viticulture and Oenology, Faculty of AgriSciences, Stellenbosch University, Matieland 7602, South Africa
| | - Valérie Cornuault
- Centre for Plant Sciences, Faculty of Biological Sciences University of Leeds, Leeds LS2 9JT, UK
| | - Maja Gro Rydahl
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - David Ropartz
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | - Camille Alvarado
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | | | - Sophie Le Gall
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | - Brigitte Bouchet
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | - Olivier Tranquet
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | | | - William G T Willats
- Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - J Paul Knox
- Centre for Plant Sciences, Faculty of Biological Sciences University of Leeds, Leeds LS2 9JT, UK
| | | | - Fabienne Guillon
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
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Ngouémazong ED, Christiaens S, Shpigelman A, Van Loey A, Hendrickx M. The Emulsifying and Emulsion-Stabilizing Properties of Pectin: A Review. Compr Rev Food Sci Food Saf 2015. [DOI: 10.1111/1541-4337.12160] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Eugénie D. Ngouémazong
- Dept. of Microbial and Molecular Systems (M²S), Laboratory of Food Technology; Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Univ. Leuven; Kasteelpark Arenberg 22, Box 2457 3001 Leuven Belgium
| | - Stefanie Christiaens
- Dept. of Microbial and Molecular Systems (M²S), Laboratory of Food Technology; Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Univ. Leuven; Kasteelpark Arenberg 22, Box 2457 3001 Leuven Belgium
| | - Avi Shpigelman
- Dept. of Microbial and Molecular Systems (M²S), Laboratory of Food Technology; Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Univ. Leuven; Kasteelpark Arenberg 22, Box 2457 3001 Leuven Belgium
| | - Ann Van Loey
- Dept. of Microbial and Molecular Systems (M²S), Laboratory of Food Technology; Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Univ. Leuven; Kasteelpark Arenberg 22, Box 2457 3001 Leuven Belgium
| | - Marc Hendrickx
- Dept. of Microbial and Molecular Systems (M²S), Laboratory of Food Technology; Leuven Food Science and Nutrition Research Centre (LFoRCe), Katholieke Univ. Leuven; Kasteelpark Arenberg 22, Box 2457 3001 Leuven Belgium
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Daher FB, Braybrook SA. How to let go: pectin and plant cell adhesion. FRONTIERS IN PLANT SCIENCE 2015; 6:523. [PMID: 26236321 PMCID: PMC4500915 DOI: 10.3389/fpls.2015.00523] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 06/29/2015] [Indexed: 05/18/2023]
Abstract
Plant cells do not, in general, migrate. They maintain a fixed position relative to their neighbors, intimately linked through growth and differentiation. The mediator of this connection, the pectin-rich middle lamella, is deposited during cell division and maintained throughout the cell's life to protect tissue integrity. The maintenance of adhesion requires cell wall modification and is dependent on the actin cytoskeleton. There are developmental processes that require cell separation, such as organ abscission, dehiscence, and ripening. In these instances, the pectin-rich middle lamella must be actively altered to allow cell separation, a process which also requires cell wall modification. In this review, we will focus on the role of pectin and its modification in cell adhesion and separation. Recent insights gained in pectin gel mechanics will be discussed in relation to existing knowledge of pectin chemistry as it relates to cell adhesion. As a whole, we hope to begin defining the physical mechanisms behind a cells' ability to hang on, and how it lets go.
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Ranganathan K, Subramanian V, Shanmugam N. Effect of Thermal and Nonthermal Processing on Textural Quality of Plant Tissues. Crit Rev Food Sci Nutr 2015; 56:2665-94. [DOI: 10.1080/10408398.2014.908348] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Christiaens S, Van Buggenhout S, Houben K, Jamsazzadeh Kermani Z, Moelants KR, Ngouémazong ED, Van Loey A, Hendrickx ME. Process–Structure–Function Relations of Pectin in Food. Crit Rev Food Sci Nutr 2015; 56:1021-42. [DOI: 10.1080/10408398.2012.753029] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Jamsazzadeh Kermani Z, Shpigelman A, Kyomugasho C, Van Buggenhout S, Ramezani M, Van Loey AM, Hendrickx ME. The impact of extraction with a chelating agent under acidic conditions on the cell wall polymers of mango peel. Food Chem 2014; 161:199-207. [DOI: 10.1016/j.foodchem.2014.03.131] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/28/2014] [Accepted: 03/31/2014] [Indexed: 11/28/2022]
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Gorshkova TA, Kozlova LV, Mikshina PV. Spatial structure of plant cell wall polysaccharides and its functional significance. BIOCHEMISTRY (MOSCOW) 2014; 78:836-53. [PMID: 24010845 DOI: 10.1134/s0006297913070146] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Plant polysaccharides comprise the major portion of organic matter in the biosphere. The cell wall built on the basis of polysaccharides is the key feature of a plant organism largely determining its biology. All together, around 10 types of polysaccharide backbones, which can be decorated by different substituents giving rise to endless diversity of carbohydrate structures, are present in cell walls of higher plants. Each of the numerous cell types present in plants has cell wall with specific parameters, the features of which mostly arise from the structure of polymeric components. The structure of polysaccharides is not directly encoded by the genome and has variability in many parameters (molecular weight, length, and location of side chains, presence of modifying groups, etc.). The extent of such variability is limited by the "functional fitting" of the polymer, which is largely based on spatial organization of the polysaccharide and its ability to form supramolecular complexes of an appropriate type. Consequently, the carrier of the functional specificity is not the certain molecular structure but the certain type of the molecules having a certain degree of heterogeneity. This review summarizes the data on structural features of plant cell wall polysaccharides, considers formation of supramolecular complexes, gives examples of tissue- and stage-specific polysaccharides and functionally significant carbohydrate-carbohydrate interactions in plant cell wall, and presents approaches to analyze the spatial structure of polysaccharides and their complexes.
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Affiliation(s)
- T A Gorshkova
- Kazan Institute of Biochemistry and Biophysics, Kazan Scientific Center, Russian Academy of Sciences, 420111 Kazan, Russia.
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31
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32
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Yapo BM. Rhamnogalacturonan-I: A Structurally Puzzling and Functionally Versatile Polysaccharide from Plant Cell Walls and Mucilages. POLYM REV 2011. [DOI: 10.1080/15583724.2011.615962] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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33
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Holck J, Hjernø K, Lorentzen A, Vigsnæs LK, Hemmingsen L, Licht TR, Mikkelsen JD, Meyer AS. Tailored enzymatic production of oligosaccharides from sugar beet pectin and evidence of differential effects of a single DP chain length difference on human faecal microbiota composition after in vitro fermentation. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.01.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Wang JH, Luo JP, Zha XQ. Structural features of a pectic polysaccharide from the stems of Dendrobium nobile Lindl. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.01.040] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Burana-osot J, Soonthornchareonnon N, Hosoyama S, Linhardt RJ, Toida T. Partial depolymerization of pectin by a photochemical reaction. Carbohydr Res 2010; 345:1205-10. [PMID: 20451177 DOI: 10.1016/j.carres.2010.04.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 04/06/2010] [Accepted: 04/08/2010] [Indexed: 10/19/2022]
Abstract
Complex heterogeneous polysaccharides that comprise pectin were partially depolymerized by a photochemical reaction using ultraviolet light in the presence of titanium dioxide catalyst. In a period of 6h at pH 7, this UV/TiO(2) process decreased the average molecular weight of pectin from 400kDa to 200kDa. The characterization of the partially depolymerized pectin, which was fractionated by size-exclusion chromatography, was performed by (1)H NMR spectroscopy, and the spectra obtained showed that the resulting oligosaccharides and polysaccharides maintained the intact core structure of pectin. The monosaccharide content and depolymerization profile were determined by high-performance anion-exchange chromatography coupled with pulsed amperometric detection. This controlled photochemical depolymerization technique might be useful for preparation of pectin oligosaccharides as an ingredient in food and pharmaceutical products.
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Affiliation(s)
- Jankana Burana-osot
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Silpakorn University, Nakorn-pathom, Thailand
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Westphal Y, Schols H, Voragen A, Gruppen H. Introducing porous graphitized carbon liquid chromatography with evaporative light scattering and mass spectrometry detection into cell wall oligosaccharide analysis. J Chromatogr A 2010; 1217:689-95. [DOI: 10.1016/j.chroma.2009.12.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 11/16/2009] [Accepted: 12/02/2009] [Indexed: 11/16/2022]
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Protsenko MA, Buza NL, Krinitsyna AA, Bulantseva EA, Korableva NP. Polygalacturonase-inhibiting protein is a structural component of plant cell wall. BIOCHEMISTRY (MOSCOW) 2008; 73:1053-62. [PMID: 18991551 DOI: 10.1134/s0006297908100015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
It is generally believed that plants "evolved a strategy of defending themselves from a phytopathogen attack" during evolution. This metaphor is used frequently, but it does not facilitate understanding of the mechanisms providing plant resistance to the invasion of foreign organisms and to other unfavorable external factors, as well as the role of these mechanisms in plant growth and development. Information on processes involving one of the plant resistance factors--polygalacturonase-inhibiting protein (PGIP)--is considered in this review. The data presented here indicate that PGIP, being an extracellular leucine-rich repeat-containing protein, performs important functions in the structure of plant cell wall. Amino acid residues participating in PGIP binding to homogalacturonan in the cell wall have been determined. The degree of methylation and the mode of distribution of homogalacturonan methyl groups are responsible for the formation of a complex structure, which perhaps determines the specificity of PGIP binding to pectin. PGIP is apparently one of the components of plant cell wall determining some of its mechanical properties; it is involved in biochemical processes related to growth, expansion, and maceration, and it influences plant morphology. Polygalacturonase (PG) is present within practically all plant tissues, but the manifestation of its activity varies significantly depending on physiological conditions in the tissue. Apparently, the regulation of PG functioning in apoplast significantly affects the development of processes associated with the modification of the structure of plant cell wall. PGIP can regulate PG activity through binding to homogalacturonan. The genetically determined structure of PGIP in plants determines the mode of its interaction with an invader and perhaps is one of the factors responsible for the set of pathogens causing diseases in a given plant species.
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Affiliation(s)
- M A Protsenko
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, 119071, Russia.
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Lee Y, Derbyshire P, Knox JP, Hvoslef-Eide AK. Sequential cell wall transformations in response to the induction of a pedicel abscission event in Euphorbia pulcherrima (poinsettia). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2008; 54:993-1003. [PMID: 18298669 DOI: 10.1111/j.1365-313x.2008.03456.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Alterations in the detection of cell wall polysaccharides during an induced abscission event in the pedicel of Euphorbia pulcherrima (poinsettia) have been determined using monoclonal antibodies and Fourier transform infrared (FT-IR) microspectroscopy. Concurrent with the appearance of a morphologically distinct abscission zone (AZ) on day 5 after induction, a reduction in the detection of the LM5 (1-->4)-beta-D-galactan and LM6 (1-->5)-alpha-L-arabinan epitopes in AZ cell walls was observed. Prior to AZ activation, a loss of the (1-->4)-beta-D-galactan and (1-->5)-alpha-L-arabinan epitopes was detected in cell walls distal to the AZ, i.e. in the to-be-shed organ. The earliest detected change, on day 2 after induction, was a specific loss of the LM5 (1-->4)-beta-D-galactan epitope from epidermal cells distal to the region where the AZ would form. Such alteration in the cell walls was an early, pre-AZ activation event. An AZ-associated de-esterification of homogalacturonan (HG) was detected in the AZ and distal area on day 7 after induction. The FT-IR analysis indicated that lignin and xylan were abundant in the AZ and that lower levels of cellulose, arabinose and pectin were present. Xylan and xyloglucan epitopes were detected in the cell walls of both the AZ and also the primary cell walls of the distal region at a late stage of the abscission process, on day 7 after induction. These observations indicate that the induction of an abscission event results in a temporal sequence of cell wall modifications involving the spatially regulated loss, appearance and/or remodelling of distinct sets of cell wall polymers.
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Affiliation(s)
- Yeonkyeong Lee
- Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, 1432 Aas, Norway
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Mort A, Zheng Y, Qiu F, Nimtz M, Bell-Eunice G. Structure of xylogalacturonan fragments from watermelon cell-wall pectin. Endopolygalacturonase can accommodate a xylosyl residue on the galacturonic acid just following the hydrolysis site. Carbohydr Res 2008; 343:1212-21. [DOI: 10.1016/j.carres.2008.03.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2007] [Revised: 03/07/2008] [Accepted: 03/12/2008] [Indexed: 11/30/2022]
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Coenen GJ, Kabel MA, Schols HA, Voragen AGJ. CE-MSn of complex pectin-derived oligomers. Electrophoresis 2008; 29:2101-11. [DOI: 10.1002/elps.200700465] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dinu D, Nechifor MT, Stoian G, Costache M, Dinischiotu A. Enzymes with new biochemical properties in the pectinolytic complex produced by Aspergillus niger MIUG 16. J Biotechnol 2007; 131:128-37. [PMID: 17655960 DOI: 10.1016/j.jbiotec.2007.06.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Revised: 05/21/2007] [Accepted: 06/14/2007] [Indexed: 10/23/2022]
Abstract
A comprehensive study on the purification and characterization of pectinolytic enzymes produced by Aspergillus niger MIUG 16 on raw materials solid-state fermentation is reported. Five pectinolytic enzymes were purified using a combination of chromatographic techniques. The properties of these homogenous enzymes were analyzed. The purified enzymes were classified with respect to their biochemical properties and substrate specificity. Among these proteins, one revealed polygalacturonase activity, another appeared to be a pectin methylesterase and three were identified as pectate lyases. The capacity of the fungus A. niger to produce pectate lyases with optimum pH in acidic domain was reported for the first time.
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Affiliation(s)
- Diana Dinu
- Department of Biochemistry, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, Bucharest 050095, Romania
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Jackson CL, Dreaden TM, Theobald LK, Tran NM, Beal TL, Eid M, Gao MY, Shirley RB, Stoffel MT, Kumar MV, Mohnen D. Pectin induces apoptosis in human prostate cancer cells: correlation of apoptotic function with pectin structure. Glycobiology 2007; 17:805-19. [PMID: 17513886 DOI: 10.1093/glycob/cwm054] [Citation(s) in RCA: 148] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Treatment options for androgen-independent prostate cancer cells are limited. Therefore, it is critical to identify agents that induce death of both androgen-responsive and androgen-insensitive cells. Here we demonstrate that a product of plant cell walls, pectin, is capable of inducing apoptosis in androgen-responsive (LNCaP) and androgen-independent (LNCaP C4-2) human prostate cancer cells. Commercially available fractionated pectin powder (FPP) induced apoptosis (approximately 40-fold above non-treated cells) in both cell lines as determined by the Apoptosense assay and activation of caspase-3 and its substrate, poly(ADP-ribose) polymerase. Conversely, citrus pectin (CP) and the pH-modified CP, PectaSol, had little or no apoptotic activity. Glycosyl residue composition and linkage analyses revealed no significant differences among the pectins. Mild base treatment to remove ester linkages destroyed FPP's apoptotic activity and yielded homogalacturonan (HG) oligosaccharides. The treatment of FPP with pectinmethylesterase to remove galacturonosyl carboxymethylesters and/or with endopolygalacturonase to cleave nonmethylesterified HG caused no major reduction in apoptotic activity, implicating the requirement for a base-sensitive linkage other than the carboxymethylester. Heat treatment of CP (HTCP) led to the induction of significant levels of apoptosis comparable to FPP, suggesting a means for generating apoptotic pectic structures. These results indicate that specific structural elements within pectin are responsible for the apoptotic activity, and that this structure can be generated, or enriched for, by heat treatment of CP. These findings provide the foundation for mechanistic studies of pectin apoptotic activity and a basis for the development of pectin-based pharmaceuticals, nutraceuticals, or recommended diet changes aimed at combating prostate cancer occurrence and progression.
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Affiliation(s)
- Crystal L Jackson
- Complex Carbohydrate Research Center, Department of Biochemistry and Molecular Biology, The University of Georgia, Athens, GA 30602, USA
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Douchiche O, Rihouey C, Schaumann A, Driouich A, Morvan C. Cadmium-induced alterations of the structural features of pectins in flax hypocotyl. PLANTA 2007; 225:1301-12. [PMID: 17086399 DOI: 10.1007/s00425-006-0425-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Accepted: 09/26/2006] [Indexed: 05/12/2023]
Abstract
In the course of our studies on the putative role of pectins in the control of cell growth, we have investigated the effect of cadmium on their composition, remodelling and distribution within the epidermis and fibre tissues of flax hypocotyl (Linum usitatissimum L.). Cadmium-stressed seedlings showed a significant inhibition of growth whereas the hypocotyl volume did not significantly change, due to the swelling of most tissues. The structural alterations consisted of significant increase of the thickness of all cell walls and the marked collapse of the sub-epidermal layer. The pectic epitopes recognized by the anti-PGA/RGI and JIM5 antibodies increased in the outer parts of the epidermis (external tangential wall and junctions) and fibres (primary wall and junctions). Concomitantly, there was a remarkable decrease of JIM7 antibody labelling and consequently an increase of the ratio JIM5/JIM7. Conversely, the ratio JIM7/JIM5 increased in the wall domains closest to the plasmalemma, which would expel the cadmium ions from the cytoplasm. The hydrolysis of cell walls revealed a cadmium-induced increase of uronic acid in the pectic matrix. Sequential extractions showed a remodelling of both homogalacturonan and rhamnogalacturonan I. In fractions enriched in primary walls, the main part of the pectins became cross-linked and could be extracted only with alkali. In fractions enriched in secondary walls, the homogalacturonan moieties were found more abundantly in the calcium-chelator extract while the rhamnogacturonan level increased in the boiling water extract.
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Affiliation(s)
- O Douchiche
- UMR 6037 CNRS, IFRMP 23, Université de Rouen, 76821 Mont Saint Aignan Cedex, France
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Kang HJ, Jo C, Kwon JH, Son JH, An BJ, Byun MW. Antioxidant and Cancer Cell Proliferation Inhibition Effect of Citrus Pectin-Oligosaccharide Prepared by Irradiation. J Med Food 2006; 9:313-20. [PMID: 17004892 DOI: 10.1089/jmf.2006.9.313] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Pectin was dissolved in deionized distilled water (2%, vol/vol) and irradiated at 20 kGy using a Co-60 gamma ray irradiator. The resulting solution was dialyzed and lyophilized. The samples were separated into three groups to estimate their antioxidant and cancer cell proliferation effects: non-irradiated (0 kGy), irradiated (20 kGy), and dialyzed (20 kGy-F, mol wt <10,000) samples. Antioxidant properties of each treatment was tested by a beta-carotene-linoleic acid bleaching assay and electron donating ability and compared for antioxidant index, which indicated that the activity was higher in the order of 20 kGy-F > 20 kGy > 0 kGy. Spleen cell survival effect of the irradiated pectin (20 kGy) and dialyzed (20 kGy-F) samples was higher than the non-irradiated control (0 kGy). The pectins inhibited growth of the cancer cell in the order of 20 kGy- F > 20 kGy > 0 kGy. The Ames test revealed that none of the fractions was mutagenic, and there was no indication of a dose-dependent response for any of the samples. These results suggest that a functional pectin oligosaccharide can be produced by irradiation for the food industry without any chemical treatment.
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Affiliation(s)
- Ho Jin Kang
- Department of Radiation Food Science and Biotechnology, Advanced Radiation Technology Institute, KAERI, Jeongeup, Republic of Korea
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Martín I, Dopico B, Muñoz FJ, Esteban R, Oomen RJFJ, Driouich A, Vincken JP, Visser R, Labrador E. In vivo expression of a Cicer arietinum beta-galactosidase in potato tubers leads to a reduction of the galactan side-chains in cell wall pectin. PLANT & CELL PHYSIOLOGY 2005; 46:1613-22. [PMID: 16076877 DOI: 10.1093/pcp/pci177] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We report the generation of Solanum tuberosum transformants expressing Cicer arietinum betaIII-Gal. betaIII-Gal is a beta-galactosidase able to degrade cell wall pectins during cell wall loosening that occurs prior to cell elongation. cDNA corresponding to the gene encoding this protein was identified among several chickpea beta-galactosidase cDNAs, and named CanBGal-3. CanBGal-3 cDNA was expressed in potato under the control of the granule-bound starch synthase promoter. Three betaIII-Gal transformants with varying levels of expression were chosen for further analysis. The transgenic plants displayed no significant altered phenotype compared to the wild type. However, beta-galactanase and beta-galactosidase activities were increased in the transgenic tuber cell walls and this affected the potato tuber pectins. A reduction in the galactosyl content of up to 50% compared to the wild type was observed in the most extreme transformant, indicating a reduction of 1,4-beta-galactan side-chains, as revealed by analysis with LM5 specific antibodies. Our results confirm the notion that the pectin-degrading activity of chickpea betaIII-Gal reported in vitro also occurs in vivo and in other plants, and confirm the involvement of betaIII-Gal in the cell wall autolysis process. An increase in the homogalacturonan content of transgenic tuber cell walls was also observed by Fourier transform infrared spectroscopy (FTIR) analysis.
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Affiliation(s)
- Ignacio Martín
- Departamento de Fisiología Vegetal, Centro Hispano Luso de Investigaciones Agrarias, Universidad de Salamanca, Plaza Doctores de la Reina s/n, Campus Miguel Unamuno, Spain
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Ten Have A, Dekkers E, Kay J, Phylip LH, van Kan JAL. An aspartic proteinase gene family in the filamentous fungus Botrytis cinerea contains members with novel features. MICROBIOLOGY-SGM 2004; 150:2475-2489. [PMID: 15256589 DOI: 10.1099/mic.0.27058-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Botrytis cinerea, an important fungal plant pathogen, secretes aspartic proteinase (AP) activity in axenic cultures. No cysteine, serine or metalloproteinase activity could be detected. Proteinase activity was higher in culture medium containing BSA or wheat germ extract, as compared to minimal medium. A proportion of the enzyme activity remained in the extracellular glucan sheath. AP was also the only type of proteinase activity in fluid obtained from B. cinerea-infected tissue of apple, pepper, tomato and zucchini. Five B. cinerea genes encoding an AP were cloned and denoted Bcap1-5. Features of the encoded proteins are discussed. BcAP1, especially, has novel characteristics. A phylogenetic analysis was performed comprising sequences originating from different kingdoms. BcAP1 and BcAP5 did not cluster in a bootstrap-supported clade. BcAP2 clusters with vacuolar APs. BcAP3 and BcAP4 cluster with secreted APs in a clade that also contains glycosylphosphatidylinositol-anchored proteinases from Saccharomyces cerevisiae and Candida albicans. All five Bcap genes are expressed in liquid cultures. Transcript levels of Bcap1, Bcap2, Bcap3 and Bcap4 are subject to glucose and peptone repression. Transcripts from all five Bcap genes were detected in infected plant tissue, indicating that at least part of the AP activity in planta originates from the pathogen.
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Affiliation(s)
- Arjen Ten Have
- Laboratory of Phytopathology, Wageningen University, Binnenhaven 5, PO Box 8025, 6700 EE Wageningen, The Netherlands
| | - Ester Dekkers
- Laboratory of Phytopathology, Wageningen University, Binnenhaven 5, PO Box 8025, 6700 EE Wageningen, The Netherlands
| | - John Kay
- Cardiff School of Biosciences, Cardiff University, PO Box 911, Cardiff CF10 3US, UK
| | - Lowri H Phylip
- Cardiff School of Biosciences, Cardiff University, PO Box 911, Cardiff CF10 3US, UK
| | - Jan A L van Kan
- Laboratory of Phytopathology, Wageningen University, Binnenhaven 5, PO Box 8025, 6700 EE Wageningen, The Netherlands
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Hugouvieux-Cotte-Pattat N. The RhaS activator controls the Erwinia chrysanthemi 3937 genes rhiN, rhiT and rhiE involved in rhamnogalacturonan catabolism. Mol Microbiol 2004; 51:1361-74. [PMID: 14982630 DOI: 10.1046/j.1365-2958.2003.03908.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Erwinia chrysanthemi causes soft-rot diseases of various plants by enzymatic degradation of the pectin in plant cell walls. The linear regions of pectin are composed of an acidic sugar, D-galacturonic acid. The ramified regions of pectin also include neutral sugars, and are rich in L-rhamnose residues. E. chrysanthemi is able to degrade these polysaccharides, polygalacturonate and rhamnogalacturonate. In E. chrysanthemi, the production of pectinases acting on linear regions is induced in the presence of polygalacturonate by a mechanism involving the repressor KdgR. The induction of the two adjacent E. chrysanthemi genes, designated rhiT and rhiN, is maximal after the simultaneous addition of both polygalacturonate and L-rhamnose. The rhiT product is homologous to the oligogalacturonide transporter TogT of E. chrysanthemi. The rhiN product is homologous to various proteins of unknown function, including a protein encoded by the plant-inducible locus picA of Agrobacterium tumefaciens. Both rhiT and rhiN are highly induced during plant infection. Various data suggest that RhiT and RhiN are involved in rhamnogalacturonate catabolism. RhiN is able to degrade the oligomers liberated by the rhamnogalacturonate lyase RhiE. The induction of the rhiTN operon in the presence of polygalacturonate results from control by the repressor KdgR. The additional induction of these genes by rhamnose is directly mediated by RhaS, a protein homologous to the activator of rhamnose catabolism in Escherichia coli. The virulence of an E. chrysanthemi rhaS mutant towards different host plants was clearly reduced. In this phytopathogenic bacterial species, RhaS positively regulates the transcription of the rhaBAD operon, involved in rhamnose catabolism, of the rhiE gene and of the rhiTN operon. The regulator RhaS plays a larger role in E. chrysanthemi than in other enterobacteria. Indeed, the RhaS control is not restricted to the catabolism of rhamnose but is extended to the degradation of plant polysaccharides that contain this sugar.
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Affiliation(s)
- Nicole Hugouvieux-Cotte-Pattat
- Unité de Microbiologie et Génétique-Composante INSA, UMR CNRS-INSA-UCB 5122, bat Lwoff, 10 rue Dubois, Domaine Scientifique de la Doua, 69622 Villeurbanne Cedex, France.
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Laatu M, Condemine G. Rhamnogalacturonate lyase RhiE is secreted by the out system in Erwinia chrysanthemi. J Bacteriol 2003; 185:1642-9. [PMID: 12591882 PMCID: PMC148073 DOI: 10.1128/jb.185.5.1642-1649.2003] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Supernatants of rhamnose-induced Erwinia chrysanthemi strain 3937 cultures contain a principal secreted protein named RhiE. A rhiE mutant has been found among a set of rhamnose-induced MudI1681 lacZ fusions. RhiE is a 62-kDa protein that has rhamnogalacturonate lyase activity on rhamnogalacturonan I (RG-I). It does not require a divalent cation for its activity and has an optimal pH of 6.0. rhiE expression is strongly induced in the presence of rhamnose but is also regulated by PecT and Crp, two regulators of the transcription of pectinolytic enzyme genes. RhiE is secreted through the type II Out secretion pathway. RhiE has no disulfide bond. The absence of RhiE secretion in a dsb mutant indicated that disulfide bond formation is required for the biogenesis of the secretion apparatus. RhiE was searched for in several E. chrysanthemi strains by using antibodies, and it was found to be present in one-third of the strains tested. However, the reduced virulence of the rhiE mutant indicates that degradation of the RG-I region of pectin is important for full virulence of E. chrysanthemi.
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Affiliation(s)
- Minna Laatu
- Unité Microbiologie et Génétique, UMR CNRS-INSA-UCB 5122, Domaine Universitaire de la Doua, 69622 Villeurbanne, France
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