1
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Zheng B, Zhang L, Zhou Z, Chen S, Chen L, Li Y, Wu A, Li H. Understanding the dynamic evolution of hemicellulose during Pinus taeda L. growth. Int J Biol Macromol 2024; 273:132914. [PMID: 38844290 DOI: 10.1016/j.ijbiomac.2024.132914] [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: 12/05/2023] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/13/2024]
Abstract
Pinus taeda L. is a fast-growing softwood with significant commercial value. Understanding structural changes in hemicellulose during growth is essential to understanding the biosynthesis processes occurring in the cell walls of this tree. In this study, alkaline extraction is applied to isolate hemicellulose from Pinus taeda L. stem segments of different ages (1, 2, 3, and 4 years old). The results show that the extracted hemicellulose is mainly comprised of O-acetylgalactoglucomannan (GGM) and 4-O-methylglucuronoarabinoxylan (GAX), with the molecular weights and ratios (i.e., GGM:GAX) of GGM and GAX increasing alongside Pinus taeda L. age. Mature Pinus taeda L. hemicellulose is mainly composed of GGM, and the ratio of (mannose:glucose) in the GGM main chain gradually increases from 2.45 to 3.60 with growth, while the galactose substitution of GGM decreases gradually from 21.36% to 14.65%. The acetylation of GGM gradually increases from 0.33 to 0.45 with the acetyl groups mainly substituting into the O-3 position in the mannan. Furthermore, the contents of arabinose and glucuronic acid in GAX gradually decrease with growth. This study can provide useful information to the research in genetic breeding and high-value utilization of Pinus taeda L.
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Affiliation(s)
- Biao Zheng
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Liuyang Zhang
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Zibin Zhou
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Siyi Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Luoting Chen
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
| | - Yuanhua Li
- School of Chemistry and Materials Engineering, Huizhou University, Huizhou 516007, China
| | - Aimin Wu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
| | - Huiling Li
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China.
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2
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Barbut FR, Cavel E, Donev EN, Gaboreanu I, Urbancsok J, Pandey G, Demailly H, Jiao D, Yassin Z, Derba-Maceluch M, Master ER, Scheepers G, Gutierrez L, Mellerowicz EJ. Integrity of xylan backbone affects plant responses to drought. FRONTIERS IN PLANT SCIENCE 2024; 15:1422701. [PMID: 38984158 PMCID: PMC11231379 DOI: 10.3389/fpls.2024.1422701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 06/07/2024] [Indexed: 07/11/2024]
Abstract
Drought is a major factor affecting crops, thus efforts are needed to increase plant resilience to this abiotic stress. The overlapping signaling pathways between drought and cell wall integrity maintenance responses create a possibility of increasing drought resistance by modifying cell walls. Here, using herbaceous and woody plant model species, Arabidopsis and hybrid aspen, respectively, we investigated how the integrity of xylan in secondary walls affects the responses of plants to drought stress. Plants, in which secondary wall xylan integrity was reduced by expressing fungal GH10 and GH11 xylanases or by affecting genes involved in xylan backbone biosynthesis, were subjected to controlled drought while their physiological responses were continuously monitored by RGB, fluorescence, and/or hyperspectral cameras. For Arabidopsis, this was supplemented with survival test after complete water withdrawal and analyses of stomatal function and stem conductivity. All Arabidopsis xylan-impaired lines showed better survival upon complete watering withdrawal, increased stomatal density and delayed growth inhibition by moderate drought, indicating increased resilience to moderate drought associated with modified xylan integrity. Subtle differences were recorded between xylan biosynthesis mutants (irx9, irx10 and irx14) and xylanase-expressing lines. irx14 was the most drought resistant genotype, and the only genotype with increased lignin content and unaltered xylem conductivity despite its irx phenotype. Rosette growth was more affected by drought in GH11- than in GH10-expressing plants. In aspen, mild downregulation of GT43B and C genes did not affect drought responses and the transgenic plants grew better than the wild-type in drought and well-watered conditions. Both GH10 and GH11 xylanases strongly inhibited stem elongation and root growth in well-watered conditions but growth was less inhibited by drought in GH11-expressing plants than in wild-type. Overall, plants with xylan integrity impairment in secondary walls were less affected than wild-type by moderately reduced water availability but their responses also varied among genotypes and species. Thus, modifying the secondary cell wall integrity can be considered as a potential strategy for developing crops better suited to withstand water scarcity, but more research is needed to address the underlying molecular causes of this variability.
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Affiliation(s)
- Félix R Barbut
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - Emilie Cavel
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), University of Picardie Jules Verne, Amiens, France
| | - Evgeniy N Donev
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - Ioana Gaboreanu
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - János Urbancsok
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - Garima Pandey
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - Hervé Demailly
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), University of Picardie Jules Verne, Amiens, France
| | - Dianyi Jiao
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), University of Picardie Jules Verne, Amiens, France
| | - Zakiya Yassin
- RISE Research Institutes of Sweden, Built Environment Division, Stockholm, Sweden
| | - Marta Derba-Maceluch
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
| | - Emma R Master
- Department of Chemical Engineering and Applied Chemistry Department, University of Toronto, Toronto, ON, Canada
| | - Gerhard Scheepers
- RISE Research Institutes of Sweden, Built Environment Division, Stockholm, Sweden
| | - Laurent Gutierrez
- Centre de Ressources Régionales en Biologie Moléculaire (CRRBM), University of Picardie Jules Verne, Amiens, France
| | - Ewa J Mellerowicz
- Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå, Sweden
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3
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Baş Y, Berglund L, Niittylä T, Zattarin E, Aili D, Sotra Z, Rinklake I, Junker J, Rakar J, Oksman K. Preparation and Characterization of Softwood and Hardwood Nanofibril Hydrogels: Toward Wound Dressing Applications. Biomacromolecules 2023; 24:5605-5619. [PMID: 37950687 PMCID: PMC10716857 DOI: 10.1021/acs.biomac.3c00596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 11/13/2023]
Abstract
Hydrogels of cellulose nanofibrils (CNFs) are promising wound dressing candidates due to their biocompatibility, high water absorption, and transparency. Herein, two different commercially available wood species, softwood and hardwood, were subjected to TEMPO-mediated oxidation to proceed with delignification and oxidation in a one-pot process, and thereafter, nanofibrils were isolated using a high-pressure microfluidizer. Furthermore, transparent nanofibril hydrogel networks were prepared by vacuum filtration. Nanofibril properties and network performance correlated with oxidation were investigated and compared with commercially available TEMPO-oxidized pulp nanofibrils and their networks. Softwood nanofibril hydrogel networks exhibited the best mechanical properties, and in vitro toxicological risk assessment showed no detrimental effect for any of the studied hydrogels on human fibroblast or keratinocyte cells. This study demonstrates a straightforward processing route for direct oxidation of different wood species to obtain nanofibril hydrogels for potential use as wound dressings, with softwood having the most potential.
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Affiliation(s)
- Yağmur Baş
- Division
of Materials Science, Luleå University
of Technology, SE-971 87 Luleå, Sweden
| | - Linn Berglund
- Division
of Materials Science, Luleå University
of Technology, SE-971 87 Luleå, Sweden
| | - Totte Niittylä
- Umeå
Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-901 87 Umeå, Sweden
| | - Elisa Zattarin
- Laboratory
of Molecular Materials, Division of Biophysics and Biotechnology,
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Daniel Aili
- Laboratory
of Molecular Materials, Division of Biophysics and Biotechnology,
Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Zeljana Sotra
- Center
for Disaster Medicine and Traumatology, Department of Biomedical and
Clinical Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Ivana Rinklake
- Center
for Disaster Medicine and Traumatology, Department of Biomedical and
Clinical Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Johan Junker
- Center
for Disaster Medicine and Traumatology, Department of Biomedical and
Clinical Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Jonathan Rakar
- Center
for Disaster Medicine and Traumatology, Department of Biomedical and
Clinical Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Kristiina Oksman
- Division
of Materials Science, Luleå University
of Technology, SE-971 87 Luleå, Sweden
- Department
of Mechanical & Industrial Engineering (MIE), University of Toronto, Toronto, Ontario M5S 3G8, Canada
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4
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Urbancsok J, Donev EN, Sivan P, van Zalen E, Barbut FR, Derba-Maceluch M, Šimura J, Yassin Z, Gandla ML, Karady M, Ljung K, Winestrand S, Jönsson LJ, Scheepers G, Delhomme N, Street NR, Mellerowicz EJ. Flexure wood formation via growth reprogramming in hybrid aspen involves jasmonates and polyamines and transcriptional changes resembling tension wood development. THE NEW PHYTOLOGIST 2023; 240:2312-2334. [PMID: 37857351 DOI: 10.1111/nph.19307] [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: 07/11/2023] [Accepted: 09/19/2023] [Indexed: 10/21/2023]
Abstract
Stem bending in trees induces flexure wood but its properties and development are poorly understood. Here, we investigated the effects of low-intensity multidirectional stem flexing on growth and wood properties of hybrid aspen, and on its transcriptomic and hormonal responses. Glasshouse-grown trees were either kept stationary or subjected to several daily shakes for 5 wk, after which the transcriptomes and hormones were analyzed in the cambial region and developing wood tissues, and the wood properties were analyzed by physical, chemical and microscopy techniques. Shaking increased primary and secondary growth and altered wood differentiation by stimulating gelatinous-fiber formation, reducing secondary wall thickness, changing matrix polysaccharides and increasing cellulose, G- and H-lignin contents, cell wall porosity and saccharification yields. Wood-forming tissues exhibited elevated jasmonate, polyamine, ethylene and brassinosteroids and reduced abscisic acid and gibberellin signaling. Transcriptional responses resembled those during tension wood formation but not opposite wood formation and revealed several thigmomorphogenesis-related genes as well as novel gene networks including FLA and XTH genes encoding plasma membrane-bound proteins. Low-intensity stem flexing stimulates growth and induces wood having improved biorefinery properties through molecular and hormonal pathways similar to thigmomorphogenesis in herbaceous plants and largely overlapping with the tension wood program of hardwoods.
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Affiliation(s)
- János Urbancsok
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Evgeniy N Donev
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Pramod Sivan
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Elena van Zalen
- Umeå Plant Science Centre (UPSC), Department of Plant Physiology, Umeå University, 90187, Umeå, Sweden
| | - Félix R Barbut
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Marta Derba-Maceluch
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Jan Šimura
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Zakiya Yassin
- RISE Research Institutes of Sweden, Drottning Kristinas väg 61, 11428, Stockholm, Sweden
| | | | - Michal Karady
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences and Faculty of Science of Palacký University, 78371, Olomouc, Czech Republic
| | - Karin Ljung
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | | | - Leif J Jönsson
- Department of Chemistry, Umeå University, 90187, Umeå, Sweden
| | - Gerhard Scheepers
- RISE Research Institutes of Sweden, Drottning Kristinas väg 61, 11428, Stockholm, Sweden
| | - Nicolas Delhomme
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Nathaniel R Street
- Umeå Plant Science Centre (UPSC), Department of Plant Physiology, Umeå University, 90187, Umeå, Sweden
- SciLifeLab, Umeå University, 90187, Umeå, Sweden
| | - Ewa J Mellerowicz
- Umeå Plant Science Centre (UPSC), Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
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5
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Derba-Maceluch M, Mitra M, Hedenström M, Liu X, Gandla ML, Barbut FR, Abreu IN, Donev EN, Urbancsok J, Moritz T, Jönsson LJ, Tsang A, Powlowski J, Master ER, Mellerowicz EJ. Xylan glucuronic acid side chains fix suberin-like aliphatic compounds to wood cell walls. THE NEW PHYTOLOGIST 2023; 238:297-312. [PMID: 36600379 DOI: 10.1111/nph.18712] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Wood is the most important repository of assimilated carbon in the biosphere, in the form of large polymers (cellulose, hemicelluloses including glucuronoxylan, and lignin) that interactively form a composite, together with soluble extractives including phenolic and aliphatic compounds. Molecular interactions among these compounds are not fully understood. We have targeted the expression of a fungal α-glucuronidase to the wood cell wall of aspen (Populus tremula L. × tremuloides Michx.) and Arabidopsis (Arabidopsis thaliana (L.) Heynh), to decrease contents of the 4-O-methyl glucuronopyranose acid (mGlcA) substituent of xylan, to elucidate mGlcA's functions. The enzyme affected the content of aliphatic insoluble cell wall components having composition similar to suberin, which required mGlcA for binding to cell walls. Such suberin-like compounds have been previously identified in decayed wood, but here, we show their presence in healthy wood of both hardwood and softwood species. By contrast, γ-ester bonds between mGlcA and lignin were insensitive to cell wall-localized α-glucuronidase, supporting the intracellular formation of these bonds. These findings challenge the current view of the wood cell wall composition and reveal a novel function of mGlcA substituent of xylan in fastening of suberin-like compounds to cell wall. They also suggest an intracellular initiation of lignin-carbohydrate complex assembly.
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Affiliation(s)
- Marta Derba-Maceluch
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Madhusree Mitra
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | | | - Xiaokun Liu
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | | | - Félix R Barbut
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Ilka N Abreu
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Evgeniy N Donev
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - János Urbancsok
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Thomas Moritz
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Leif J Jönsson
- Department of Chemistry, Umeå University, 901 87, Umeå, Sweden
| | - Adrian Tsang
- Centre for Structural and Functional Genomics, Concordia University, Montreal, QC, H4B 1R6, Canada
| | - Justin Powlowski
- Centre for Structural and Functional Genomics, Concordia University, Montreal, QC, H4B 1R6, Canada
| | - Emma R Master
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada
| | - Ewa J Mellerowicz
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
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6
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Progress in the pretreatment and analysis of carbohydrates in food: An update since 2013. J Chromatogr A 2021; 1655:462496. [PMID: 34492577 DOI: 10.1016/j.chroma.2021.462496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/21/2021] [Accepted: 08/22/2021] [Indexed: 11/21/2022]
Abstract
Carbohydrates in foods and other matrices plays vital roles in their diverse biological functions. Carbohydrates serve not only as functional substances but also as structural materials, such as components of membranes, and participate in cellular recognition. The fact that carbohydrates are indispensable has contributed to the need for pretreatment and analytical methods to be developed for their characterization. The aim of this review is to provide a comprehensive overview of carbohydrate pretreatment and determination methods in various matrices. The pretreatment methods include simple and more developed approaches (e.g., solid phase extraction, supercritical fluid extraction, and different microextraction methods, among others). The analytical methods include those by liquid chromatography (including high-performance anion-exchange chromatography), capillary electrophoresis, gas chromatography and supercritical fluid chromatography, and others. Different pretreatment methods and determination approaches are updated, compared, and discussed. Moreover, we discuss and compare the strengths and weaknesses of different methods and suggest their future prospects.
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7
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Cebin AV, Ralet MC, Vigouroux J, Karača S, Martinić A, Komes D, Bonnin E. Valorisation of walnut shell and pea pod as novel sources for the production of xylooligosaccharides. Carbohydr Polym 2021; 263:117932. [PMID: 33858566 DOI: 10.1016/j.carbpol.2021.117932] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/16/2021] [Accepted: 03/09/2021] [Indexed: 10/21/2022]
Abstract
According to the high interest in agro-industrial waste reutilisation, underutilised lignocellulosic materials, such as walnut shell (WS) and pea pod (PP), come in focus. The aim of this paper was to evaluate WS and PP as sources for the production of xylooligosaccharides (XOS). Hemicelluloses from WS and PP were recovered by combining varying parameters of delignification and alkaline extraction. At optimal recovery conditions, the fractions were further hydrolysed to XOS using GH11 endo-xylanase, by varying time and enzyme concentration. Xylose was predominant in the monomeric composition of the obtained hemicelluloses, building low-branched (arabino)glucuronoxylan, in WS exclusively, while in PP some xyloglucan as well. Delignification was essential for high recovery of total xylose from the materials, up to at least 70 %. High xylan conversions were obtained for 24 h hydrolysis, resulting in xylobiose and xylotriose when using low enzyme concentration, while in xylose and xylobiose with high enzyme concentration.
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Affiliation(s)
- Aleksandra Vojvodić Cebin
- Faculty of Food Technology and Biotechnology University of Zagreb, Department of Food Engineering, Pierottijeva 6, 10 000, Zagreb, Croatia.
| | | | | | - Sara Karača
- Faculty of Food Technology and Biotechnology University of Zagreb, Department of Food Engineering, Pierottijeva 6, 10 000, Zagreb, Croatia.
| | - Arijana Martinić
- Faculty of Food Technology and Biotechnology University of Zagreb, Department of Food Engineering, Pierottijeva 6, 10 000, Zagreb, Croatia.
| | - Draženka Komes
- Faculty of Food Technology and Biotechnology University of Zagreb, Department of Food Engineering, Pierottijeva 6, 10 000, Zagreb, Croatia.
| | - Estelle Bonnin
- INRAE, UR BIA Biopolymers - Interactions - Assemblies, F-44316, Nantes, France.
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8
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Pramod S, Gandla ML, Derba-Maceluch M, Jönsson LJ, Mellerowicz EJ, Winestrand S. Saccharification Potential of Transgenic Greenhouse- and Field-Grown Aspen Engineered for Reduced Xylan Acetylation. FRONTIERS IN PLANT SCIENCE 2021; 12:704960. [PMID: 34557213 PMCID: PMC8454504 DOI: 10.3389/fpls.2021.704960] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/22/2021] [Indexed: 05/20/2023]
Abstract
High acetylation of xylan in hardwoods decreases their value as biorefinery feedstocks. To counter this problem, we have constitutively suppressed RWA genes encoding acetyl-CoA transporters using the 35S promoter, or constitutively and wood-specifically (using the WP promoter) expressed fungal acetyl xylan esterases of families CE1 (AnAXE1) and CE5 (HjAXE), to reduce acetylation in hybrid aspen. All these transformations improved the saccharification of wood from greenhouse-grown trees. Here, we describe the chemical properties and saccharification potential of the resulting lines grown in a five-year field trial, and one type of them (WP:AnAXE1) in greenhouse conditions. Chemically, the lignocellulose of the field- and greenhouse-field-grown plants slightly differed, but the reductions in acetylation and saccharification improvement of engineered trees were largely maintained in the field. The main novel phenotypic observation in the field was higher lignification in lines with the WP promoter than those with the 35S promoter. Following growth in the field, saccharification glucose yields were higher from most transformed lines than from wild-type (WT) plants with no pretreatment, but there was no improvement in saccharification with acid pretreatment. Thus, acid pretreatment removes most recalcitrance caused by acetylation. We found a complex relationship between acetylation and glucose yields in saccharification without pretreatment, suggesting that other variables, for example, the acetylation pattern, affect recalcitrance. Bigger gains in glucose yields were observed in lines with the 35S promoter than in those with the WP promoter, possibly due to their lower lignin content. However, better lignocellulose saccharification of these lines was offset by a growth penalty and their glucose yield per tree was lower. In a comparison of the best lines with each construct, WP:AnAXE1 provided the highest glucose yield per tree from saccharification, with and without pretreatment, WP:HjAXE yields were similar to those of WT plants, and yields of lines with other constructs were lower. These results show that lignocellulose properties of field-grown trees can be improved by reducing cell wall acetylation using various approaches, but some affect productivity in the field. Thus, better understanding of molecular and physiological consequences of deacetylation is needed to obtain quantitatively better results.
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Affiliation(s)
- Sivan Pramod
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, Sweden
| | | | - Marta Derba-Maceluch
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, Sweden
| | | | - Ewa J. Mellerowicz
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, Umeå, Sweden
- *Correspondence: Ewa J. Mellerowicz,
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9
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Smith PJ, O'Neill MA, Backe J, York WS, Peña MJ, Urbanowicz BR. Analytical Techniques for Determining the Role of Domain of Unknown Function 579 Proteins in the Synthesis of O-Methylated Plant Polysaccharides. SLAS Technol 2020; 25:345-355. [PMID: 32204644 DOI: 10.1177/2472630320912692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Matrix polysaccharides are a diverse group of structurally complex carbohydrates and account for a large portion of the biomass consumed as food or used to produce fuels and materials. Glucuronoxylan and arabinogalactan protein are matrix glycans that have sidechains decorated with 4-O-methyl glucuronosyl residues. Methylation is a key determinant of the physical properties of these wall glycopolymers and consequently affects both their biological function and ability to interact with other wall polymers. Indeed, there is increasing interest in determining the distribution and abundance of methyl-etherified polysaccharides in different plant species, tissues, and developmental stages. There is also a need to understand the mechanisms involved in their biosynthesis. Members of the Domain of Unknown Function (DUF) 579 family have been demonstrated to have a role in the biosynthesis of methyl-etherified glycans. Here we describe methods for the analysis of the 4-O-methyl glucuronic acid moieties that are present in sidechains of arabinogalactan proteins. These methods are then applied toward the analysis of loss-of-function mutants of two DUF579 family members that lack this modification in muro. We also present a procedure to assay DUF579 family members for enzymatic activity in vitro using acceptor oligosaccharides prepared from xylan of loss-of-function mutants. Our approach facilitates the characterization of enzymes that modify glycosyl residues during cell wall synthesis and the structures that they generate.
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Affiliation(s)
- Peter J Smith
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.,Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA.,Center for Bioenergy Innovation (CBI), Oak Ridge National Laboratory, OakRidge, TN, USA
| | - Malcolm A O'Neill
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Jason Backe
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.,Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA.,Center for Bioenergy Innovation (CBI), Oak Ridge National Laboratory, OakRidge, TN, USA
| | - William S York
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.,Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA.,Center for Bioenergy Innovation (CBI), Oak Ridge National Laboratory, OakRidge, TN, USA
| | - Maria J Peña
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.,Center for Bioenergy Innovation (CBI), Oak Ridge National Laboratory, OakRidge, TN, USA
| | - Breeanna R Urbanowicz
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA.,Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, USA.,Center for Bioenergy Innovation (CBI), Oak Ridge National Laboratory, OakRidge, TN, USA
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10
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Lahtinen MH, Valoppi F, Juntti V, Heikkinen S, Kilpeläinen PO, Maina NH, Mikkonen KS. Lignin-Rich PHWE Hemicellulose Extracts Responsible for Extended Emulsion Stabilization. Front Chem 2019; 7:871. [PMID: 31921786 PMCID: PMC6927942 DOI: 10.3389/fchem.2019.00871] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/03/2019] [Indexed: 01/01/2023] Open
Abstract
Wood hemicelluloses have an excellent capacity to form and stabilize oil-in-water emulsions. Galactoglucomannans (GGM) from spruce and glucuronoxylans (GX) from birch provide multifunctional protection against physical breakdown and lipid oxidation in emulsions. Phenolic residues, coextracted with hemicelluloses using the pressurized hot water (PHWE) process, seem to further enhance emulsion stability. According to hypothesis, phenolic residues associated with hemicelluloses deliver and anchor hemicelluloses at the emulsion interface. This study is the first to characterize the structure of the phenolic residues in both GGM- and GX-rich wood extracts and their role in the stabilization of emulsions. PHWE GGM and GX were fractionated by centrifugation to obtain concentrated phenolic residues as one fraction (GGM-phe and GX-phe) and partially purified hemicelluloses as the other fraction (GGM-pur and GX-pur). To evaluate the role of each fraction in terms of physical and oxidative stabilization, rapeseed oil-in-water emulsions were prepared using GGM, GX, GGM-pur, and GX-pur as stabilizers. Changes in droplet-size distribution and peroxide values were measured during a 3-month accelerated storage test. The results for fresh emulsions indicated that the phenolic-rich fractions in hemicelluloses take part in the formation of emulsions. Furthermore, results from the accelerated storage test indicated that phenolic structures improve the long-term physical stability of emulsions. According to measured peroxide values, all hemicelluloses examined inhibited lipid oxidation in emulsions, GX being the most effective. This indicates that phenolic residues associated with hemicelluloses act as antioxidants in emulsions. According to chemical characterization using complementary methods, the phenolic fractions, GGM-phe and GX-phe, were composed mainly of lignin. Furthermore, the total carbohydrate content of the phenolic fractions was clearly lower compared to the starting hemicelluloses GGM and GX, and the purified fractions GGM-pur and GX-pur. Apparently, the phenolic structures were enriched in the GGM-phe and GX-phe fractions, which was confirmed by NMR spectroscopy as well as by other characterization methods. The frequency of the main bonding pattern in lignins, the β-O-4 structure, was clearly very high, suggesting that extracted lignin remains in native form. Furthermore, the lignin carbohydrate complex of γ-ester type was found, which could explain the excellent stabilizing properties of PHWE hemicelluloses in emulsions.
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Affiliation(s)
- Maarit H Lahtinen
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Fabio Valoppi
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland.,Faculty of Agriculture and Forestry, Helsinki Institute of Sustainability Science, University of Helsinki, Helsinki, Finland
| | - Venla Juntti
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Sami Heikkinen
- Department of Chemistry, University of Helsinki, Helsinki, Finland
| | | | - Ndegwa H Maina
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Kirsi S Mikkonen
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland.,Faculty of Agriculture and Forestry, Helsinki Institute of Sustainability Science, University of Helsinki, Helsinki, Finland
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11
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Kishani S, Vilaplana F, Ruda M, Hansson P, Wågberg L. Influence of Solubility on the Adsorption of Different Xyloglucan Fractions at Cellulose–Water Interfaces. Biomacromolecules 2019; 21:772-782. [DOI: 10.1021/acs.biomac.9b01465] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Saina Kishani
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
| | - Francisco Vilaplana
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
- School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Department of Chemistry, Division of Glycoscience, Royal Institute of Technology, Albanova University Centre, SE-10691 Stockholm, Sweden
| | - Marcus Ruda
- Ren Com AB, Drottning Kristinas väg 61, SE-11428 Stockholm, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, Box 580, 75123 Uppsala, Sweden
| | - Lars Wågberg
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
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12
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Alonso-Serra J, Safronov O, Lim KJ, Fraser-Miller SJ, Blokhina OB, Campilho A, Chong SL, Fagerstedt K, Haavikko R, Helariutta Y, Immanen J, Kangasjärvi J, Kauppila TJ, Lehtonen M, Ragni L, Rajaraman S, Räsänen RM, Safdari P, Tenkanen M, Yli-Kauhaluoma JT, Teeri TH, Strachan CJ, Nieminen K, Salojärvi J. Tissue-specific study across the stem reveals the chemistry and transcriptome dynamics of birch bark. THE NEW PHYTOLOGIST 2019; 222:1816-1831. [PMID: 30724367 DOI: 10.1111/nph.15725] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/25/2019] [Indexed: 05/09/2023]
Abstract
Tree bark is a highly specialized array of tissues that plays important roles in plant protection and development. Bark tissues develop from two lateral meristems; the phellogen (cork cambium) produces the outermost stem-environment barrier called the periderm, while the vascular cambium contributes with phloem tissues. Although bark is diverse in terms of tissues, functions and species, it remains understudied at higher resolution. We dissected the stem of silver birch (Betula pendula) into eight major tissue types, and characterized these by a combined transcriptomics and metabolomics approach. We further analyzed the varying bark types within the Betulaceae family. The two meristems had a distinct contribution to the stem transcriptomic landscape. Furthermore, inter- and intraspecies analyses illustrated the unique molecular profile of the phellem. We identified multiple tissue-specific metabolic pathways, such as the mevalonate/betulin biosynthesis pathway, that displayed differential evolution within the Betulaceae. A detailed analysis of suberin and betulin biosynthesis pathways identified a set of underlying regulators and highlighted the important role of local, small-scale gene duplication events in the evolution of metabolic pathways. This work reveals the transcriptome and metabolic diversity among bark tissues and provides insights to its development and evolution, as well as its biotechnological applications.
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Affiliation(s)
- Juan Alonso-Serra
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Omid Safronov
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Kean-Jin Lim
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Department of Agricultural Sciences, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, Hangzhou, China
| | - Sara J Fraser-Miller
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
- The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Chemistry, University of Otago, 9054, Dunedin, New Zealand
| | - Olga B Blokhina
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Ana Campilho
- Research Center in Biodiversity and Genetic Resources, Department of Biology, Faculty of Sciences, University of Porto, 4485-661, Porto, Portugal
| | - Sun-Li Chong
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, 311300, Hangzhou, China
- Department of Food and Nutrition, University of Helsinki, 00014, Helsinki, Finland
| | - Kurt Fagerstedt
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Raisa Haavikko
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
| | - Ykä Helariutta
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, UK
| | - Juha Immanen
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Natural Resources Institute Finland (Luke), 00710, Helsinki, Finland
| | - Jaakko Kangasjärvi
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Tiina J Kauppila
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
| | - Mari Lehtonen
- Laboratory Center, Finnish Environment Institute (SYKE), 00790, Helsinki, Finland
| | - Laura Ragni
- ZMBP-Center for Plant Molecular Biology, University of Tübingen, D-72076, Tübingen, Germany
| | - Sitaram Rajaraman
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Riikka-Marjaana Räsänen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
| | - Pezhman Safdari
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Maija Tenkanen
- Department of Food and Nutrition, University of Helsinki, 00014, Helsinki, Finland
| | - Jari T Yli-Kauhaluoma
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
| | - Teemu H Teeri
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- Department of Agricultural Sciences, University of Helsinki, Helsinki, 00014, Helsinki, Finland
| | - Clare J Strachan
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00014, Helsinki, Finland
| | - Kaisa Nieminen
- Natural Resources Institute Finland (Luke), 00710, Helsinki, Finland
| | - Jarkko Salojärvi
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, 00014, Helsinki, Finland
- Viikki Plant Science Centre, University of Helsinki, Helsinki, 00014, Helsinki, Finland
- School of Biological Sciences, Nanyang Technological University, 637551, Singapore, Singapore
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 637551, Singapore, Singapore
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13
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Kishani S, Escalante A, Toriz G, Vilaplana F, Gatenholm P, Hansson P, Wagberg L. Experimental and Theoretical Evaluation of the Solubility/Insolubility of Spruce Xylan (Arabino Glucuronoxylan). Biomacromolecules 2019; 20:1263-1270. [DOI: 10.1021/acs.biomac.8b01686] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Saina Kishani
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
| | - Alfredo Escalante
- Wood, Cellulose
and Paper Research Department, Universidad de Guadalajara, Guadalajara Jalisco Mexico
| | - Guillermo Toriz
- Wood, Cellulose
and Paper Research Department, Universidad de Guadalajara, Guadalajara Jalisco Mexico
- WWSC, Chalmers University of Technology, Gothenburg, Sweden
| | - Francisco Vilaplana
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
- School of Biotechnology, Division of Glycoscience, Royal Institute of Technology, Albanova University Centre, SE-10691 Stockholm, Sweden
| | - Paul Gatenholm
- Chemical Biological Engineering/Biopolymer, Chalmers University of Technology, Goteborg, Sweden
- WWSC, Chalmers University of Technology, Gothenburg, Sweden
| | - Per Hansson
- Department of Pharmacy, Uppsala University, Box 580, 75123 Uppsala, Sweden
| | - Lars Wagberg
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg Wood Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
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14
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Bhattarai M, Pitkänen L, Kitunen V, Korpinen R, Ilvesniemi H, Kilpeläinen PO, Lehtonen M, Mikkonen KS. Functionality of spruce galactoglucomannans in oil-in-water emulsions. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.03.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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15
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Affiliation(s)
- Saina Kishani
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg
Wood
Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
| | - Francisco Vilaplana
- Wallenberg
Wood
Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
- School of Biotechnology, Division of Glycoscience, Royal Institute of Technology, Albanova University Centre, SE-10691 Stockholm, Sweden
| | - Wenyang Xu
- Johan Gadolin Process Chemistry Centre, Laboratory of Wood and Paper Chemistry, Åbo Akademi University, FI-20500 Turku/Åbo, Finland
| | - Chunlin Xu
- Johan Gadolin Process Chemistry Centre, Laboratory of Wood and Paper Chemistry, Åbo Akademi University, FI-20500 Turku/Åbo, Finland
| | - Lars Wågberg
- School of Chemical Science and Engineering, Fibre and Polymer Technology, Royal Institute of Technology, Teknikringen 56-58, SE-10044 Stockholm, Sweden
- Wallenberg
Wood
Science Centre (WWSC), Teknikringen 56-58, SE-10044 Stockholm, Sweden
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16
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Mikkonen KS, Merger D, Kilpeläinen P, Murtomäki L, Schmidt US, Wilhelm M. Determination of physical emulsion stabilization mechanisms of wood hemicelluloses via rheological and interfacial characterization. SOFT MATTER 2016; 12:8690-8700. [PMID: 27722424 DOI: 10.1039/c6sm01557c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Materials manufacturing industries seek efficient, economic, and sustainable compounds for stabilizing dispersed systems such as emulsions. In this study, novel, abundant biobased hydrocolloids spruce galactoglucomannans (GGM) and birch glucuronoxylans (GX) were obtained from a forestry biorefining process and characterized as versatile stabilizers of rapeseed oil-in-water emulsions. For the first time, GGM and GX isolated by pressurized hot water extraction (PHWE) of spruce and birch saw meal, respectively, were studied in emulsions. The PHWE wood hemicelluloses-polysaccharides with relatively low molar mass-facilitated the formation of emulsions with small average droplet size and efficiently prevented droplet coalescence. GGM and GX lowered the surface tension of emulsions' oil-water interface and increased the viscosity of the continuous phase. However, viscosity of the wood hemicellulose-based systems was low compared to that of commercial polymeric stabilizers. GGM-stabilized emulsions with varying oil volume fractions were characterized in terms of their rheological properties, including large amplitude oscillation shear (LAOS) measurements, and compared to emulsions prepared with a classical small-molecular surfactant, Tween20. The physical emulsion stabilization mechanisms of GGM and GX are suggested as steric repulsion assisted by Pickering-type stabilization. Wood hemicelluloses have potential as highly promising future bioproducts for versatile industrial applications involving colloidal systems and soft materials.
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Affiliation(s)
- K S Mikkonen
- Department of Food and Environmental Sciences, 00014 University of Helsinki, P. O. Box 27, Finland.
| | - D Merger
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Germany
| | - P Kilpeläinen
- Natural Resources Institute Finland, Viikinkaari 4, 00790 Helsinki, Finland
| | - L Murtomäki
- Department of Chemistry, Aalto University, P. O. Box 16100, 00076 Aalto, Finland
| | - U S Schmidt
- Institute of Process Engineering in Life Sciences, Section I: Food Process Engineering, Karlsruhe Institute of Technology, Germany
| | - M Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Germany
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17
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Morais de Carvalho D, Martínez-Abad A, Evtuguin DV, Colodette JL, Lindström ME, Vilaplana F, Sevastyanova O. Isolation and characterization of acetylated glucuronoarabinoxylan from sugarcane bagasse and straw. Carbohydr Polym 2016; 156:223-234. [PMID: 27842817 DOI: 10.1016/j.carbpol.2016.09.022] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 09/06/2016] [Accepted: 09/07/2016] [Indexed: 10/21/2022]
Abstract
Sugarcane bagasse and straw are generated in large volumes as by-products of agro-industrial production. They are an emerging valuable resource for the generation of hemicellulose-based materials and products, since they contain significant quantities of xylans (often twice as much as in hardwoods). Heteroxylans (yields of ca 20% based on xylose content in sugarcane bagasse and straw) were successfully isolated and purified using mild delignification followed by dimethyl sulfoxide (DMSO) extraction. Delignification with peracetic acid (PAA) was more efficient than traditional sodium chlorite (NaClO2) delignification for xylan extraction from both biomasses, resulting in higher extraction yields and purity. We have shown that the heteroxylans isolated from sugarcane bagasse and straw are acetylated glucuronoarabinoxylans (GAX), with distinct molecular structures. Bagasse GAX had a slightly lower glycosyl substitution molar ratio of Araf to Xylp to (0.5:10) and (4-O-Me)GlpA to Xylp (0.1:10) than GAX from straw (0.8:10 and 0.1:10 respectively), but a higher degree of acetylation (0.33 and 0.10, respectively). A higher frequency of acetyl groups substitution at position α-(1→3) (Xyl-3Ac) than at position α-(1→2) (Xyl-2Ac) was confirmed for both bagasse and straw GAX, with a minor ratio of diacetylation (Xyl-2,3Ac). The size and molecular weight distributions for the acetylated GAX extracted from the sugarcane bagasse and straw were analyzed using multiple-detection size-exclusion chromatography (SEC-DRI-MALLS). Light scattering data provided absolute molar mass values for acetylated GAX with higher average values than did standard calibration. Moreover, the data highlighted differences in the molar mass distributions between the two isolation methods for both types of sugarcane GAX, which can be correlated with the different Araf and acetyl substitution patterns. We have developed an empirical model for the molecular structure of acetylated GAX extracted from sugarcane bagasse and straw with PAA/DMSO through the integration of results obtained from glycosidic linkage analysis, 1H NMR spectroscopy and acetyl quantification. This knowledge of the structure of xylans in sugarcane bagasse and straw will provide a better understanding of the isolation-structure-properties relationship of these biopolymers and, ultimately, create new possibilities for the use of sugarcane xylan in high-value applications, such as biochemicals and bio-based materials.
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Affiliation(s)
- Danila Morais de Carvalho
- Pulp and Paper Laboratory, Department of Forestry Engineering, Federal University of Viçosa, Av. P. H. Rolfs, S/N, Campus, 36570-900 Viçosa, Minas Gerais, Brazil; Department of Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Antonio Martínez-Abad
- Division of Glycoscience, School of Biotechnology, KTH, Royal Institute of Technology, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - Dmitry V Evtuguin
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Jorge Luiz Colodette
- Pulp and Paper Laboratory, Department of Forestry Engineering, Federal University of Viçosa, Av. P. H. Rolfs, S/N, Campus, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Mikael E Lindström
- Department of Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Francisco Vilaplana
- Division of Glycoscience, School of Biotechnology, KTH, Royal Institute of Technology, AlbaNova University Center, SE-106 91 Stockholm, Sweden; Wallenberg Wood Science Center, Department of Fibre and Polymer Technology, KTH, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Olena Sevastyanova
- Department of Fibre and Polymer Technology, KTH, Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden; Wallenberg Wood Science Center, Department of Fibre and Polymer Technology, KTH, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
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18
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McKee LS, Sunner H, Anasontzis GE, Toriz G, Gatenholm P, Bulone V, Vilaplana F, Olsson L. A GH115 α-glucuronidase from Schizophyllum commune contributes to the synergistic enzymatic deconstruction of softwood glucuronoarabinoxylan. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:2. [PMID: 26734072 PMCID: PMC4700659 DOI: 10.1186/s13068-015-0417-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 12/15/2015] [Indexed: 05/11/2023]
Abstract
BACKGROUND Lignocellulosic biomass from softwood represents a valuable resource for the production of biofuels and bio-based materials as alternatives to traditional pulp and paper products. Hemicelluloses constitute an extremely heterogeneous fraction of the plant cell wall, as their molecular structures involve multiple monosaccharide components, glycosidic linkages, and decoration patterns. The complete enzymatic hydrolysis of wood hemicelluloses into monosaccharides is therefore a complex biochemical process that requires the activities of multiple degradative enzymes with complementary activities tailored to the structural features of a particular substrate. Glucuronoarabinoxylan (GAX) is a major hemicellulose component in softwood, and its structural complexity requires more enzyme specificities to achieve complete hydrolysis compared to glucuronoxylans from hardwood and arabinoxylans from grasses. RESULTS We report the characterisation of a recombinant α-glucuronidase (Agu115) from Schizophyllum commune capable of removing (4-O-methyl)-glucuronic acid ((Me)GlcA) residues from polymeric and oligomeric xylan. The enzyme is required for the complete deconstruction of spruce glucuronoarabinoxylan (GAX) and acts synergistically with other xylan-degrading enzymes, specifically a xylanase (Xyn10C), an α-l-arabinofuranosidase (AbfA), and a β-xylosidase (XynB). Each enzyme in this mixture showed varying degrees of potentiation by the other activities, likely due to increased physical access to their respective target monosaccharides. The exo-acting Agu115 and AbfA were unable to remove all of their respective target side chain decorations from GAX, but their specific activity was significantly boosted by the addition of the endo-Xyn10C xylanase. We demonstrate that the proposed enzymatic cocktail (Agu115 with AbfA, Xyn10C and XynB) achieved almost complete conversion of GAX to arabinofuranose (Araf), xylopyranose (Xylp), and MeGlcA monosaccharides. Addition of Agu115 to the enzymatic cocktail contributes specifically to 25 % of the conversion. However, traces of residual oligosaccharides resistant to this combination of enzymes were still present after deconstruction, due to steric hindrances to enzyme access to the substrate. CONCLUSIONS Our GH115 α-glucuronidase is capable of finely tailoring the molecular structure of softwood GAX, and contributes to the almost complete saccharification of GAX in synergy with other exo- and endo-xylan-acting enzymes. This has great relevance for the cost-efficient production of biofuels from softwood lignocellulose.
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Affiliation(s)
- Lauren S. McKee
- />Wallenberg Wood Science Centre, Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
| | - Hampus Sunner
- />Wallenberg Wood Science Centre, Division of Industrial Biotechnology, Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - George E. Anasontzis
- />Wallenberg Wood Science Centre, Division of Industrial Biotechnology, Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Guillermo Toriz
- />Wallenberg Wood Science Centre, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
- />Department of Wood, Cellulose and Paper Research, University of Guadalajara, Guadalajara, Mexico
| | - Paul Gatenholm
- />Wallenberg Wood Science Centre, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Vincent Bulone
- />Wallenberg Wood Science Centre, Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
- />ARC Centre of Excellence in Plant Cell Walls and School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, Urrbrae, SA 5064 Australia
| | - Francisco Vilaplana
- />Wallenberg Wood Science Centre, Division of Glycoscience, School of Biotechnology, KTH Royal Institute of Technology, AlbaNova University Centre, 106 91 Stockholm, Sweden
| | - Lisbeth Olsson
- />Wallenberg Wood Science Centre, Division of Industrial Biotechnology, Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
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19
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Lorenz D, Erasmy N, Akil Y, Saake B. A new method for the quantification of monosaccharides, uronic acids and oligosaccharides in partially hydrolyzed xylans by HPAEC-UV/VIS. Carbohydr Polym 2015; 140:181-7. [PMID: 26876842 DOI: 10.1016/j.carbpol.2015.12.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/07/2015] [Accepted: 12/10/2015] [Indexed: 11/30/2022]
Abstract
A new method for the chemical characterization of xylans is presented, to overcome the difficulties in quantification of 4-O-methyl-α-D-glucuronic acid (meGlcA). In this regard, the hydrolysis behavior of xylans from beech and birch wood was investigated to obtain the optimum conditions for hydrolysis, using sulfuric acid. Due to varying linkage strengths and degradation, no general method for complete hydrolysis can be designed. Therefore, partial hydrolysis was applied, yielding monosaccharides and small meGlcA containing oligosaccharides. For a new method by HPAEC-UV/VIS, these samples were reductively aminated by 2-aminobenzoic acid. By quantification of monosaccharides and oligosaccharides, as well as comparison with borate-HPAEC and (13)C NMR-spectroscopy, we revealed that the concentrations meGlcA are significantly underestimated compared to conventional methods. The detected concentrations are 85.4% (beech) and 76.3% (birch) higher with the new procedure. Furthermore, the quantified concentrations of xylose were 9.3% (beech) and 6.5% (birch) higher by considering the unhydrolyzed oligosaccharides as well.
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Affiliation(s)
- Dominic Lorenz
- Department of Wood Science, University of Hamburg, Leuschnerstr. 91 b, 21031, Hamburg, Germany.
| | - Nicole Erasmy
- Thünen-Insitute of Wood Research, Leuschnerstr. 91 b, 21031, Hamburg, Germany.
| | - Youssef Akil
- Department of Wood Science, University of Hamburg, Leuschnerstr. 91 b, 21031, Hamburg, Germany.
| | - Bodo Saake
- Department of Wood Science, University of Hamburg, Leuschnerstr. 91 b, 21031, Hamburg, Germany.
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20
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Glucuronic acid in Arabidopsis thaliana xylans carries a novel pentose substituent. Int J Biol Macromol 2015; 79:807-12. [DOI: 10.1016/j.ijbiomac.2015.05.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/23/2015] [Accepted: 05/30/2015] [Indexed: 01/15/2023]
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21
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Chong SL, Derba-Maceluch M, Koutaniemi S, Gómez LD, McQueen-Mason SJ, Tenkanen M, Mellerowicz EJ. Active fungal GH115 α-glucuronidase produced in Arabidopsis thaliana affects only the UX1-reactive glucuronate decorations on native glucuronoxylans. BMC Biotechnol 2015; 15:56. [PMID: 26084671 PMCID: PMC4472178 DOI: 10.1186/s12896-015-0154-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 04/27/2015] [Indexed: 12/22/2022] Open
Abstract
Background Expressing microbial polysaccharide-modifying enzymes in plants is an attractive approach to custom tailor plant lignocellulose and to study the importance of wall structures to plant development. Expression of α-glucuronidases in plants to modify the structures of glucuronoxylans has not been yet attempted. Glycoside hydrolase (GH) family 115 α-glucuronidases cleave the internal α-D-(4-O-methyl)glucopyranosyluronic acid ((Me)GlcA) from xylans or xylooligosaccharides. In this work, a GH115 α-glucuronidase from Schizophyllum commune, ScAGU115, was expressed in Arabidopsis thaliana and targeted to apoplast. The transgene effects on native xylans’ structures, plant development, and lignocellulose saccharification were evaluated and compared to those of knocked out glucuronyltransferases AtGUX1 and AtGUX2. Results The ScAGU115 extracted from cell walls of Arabidopsis was active on the internally substituted aldopentaouronic acid (XUXX). The transgenic plants did not show any change in growth or in lignocellulose saccharification. The cell wall (Me)GlcA and other non-cellulosic sugars, as well as the lignin content, remained unchanged. In contrast, the gux1gux2 double mutant showed a 70% decrease in (Me)GlcA to xylose molar ratio, and, interestingly, a 60% increase in the xylose content. Whereas ScAGU115-expressing plants exhibited a decreased signal in native secondary walls from the monoclonal antibody UX1 that recognizes (Me)GlcA on non-acetylated xylan, the signal was not affected after wall deacetylation. In contrast, gux1gux2 mutant was lacking UX1 signals in both native and deacetylated cell walls. This indicates that acetyl substitution on the xylopyranosyl residue carrying (Me)GlcA or on the neighboring xylopyranosyl residues may restrict post-synthetic modification of xylans by ScAGU115 in planta. Conclusions Active GH115 α-glucuronidase has been produced for the first time in plants. The cell wall–targeted ScAGU115 was shown to affect those glucuronate substitutions of xylan, which are accessible to UX1 antibody and constitute a small fraction in Arabidopsis, whereas majority of (Me)GlcA substitutions were resistant, most likely due to the shielding by acetyl groups. Plants expressing ScAGU115 did not show any defects under laboratory conditions indicating that the UX1 epitope of xylan is not essential under these conditions. Moreover the removal of the UX1 xylan epitope does not affect lignocellulose saccharification. Electronic supplementary material The online version of this article (doi:10.1186/s12896-015-0154-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sun-Li Chong
- Department of Food and Environmental Sciences, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, Helsinki, 00014, Finland.
| | - Marta Derba-Maceluch
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, 901-83, Sweden.
| | - Sanna Koutaniemi
- Department of Food and Environmental Sciences, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, Helsinki, 00014, Finland.
| | - Leonardo D Gómez
- Center for Novel Agricultural Products Department of Biology, University of York, York, YO10 5DD, UK.
| | - Simon J McQueen-Mason
- Center for Novel Agricultural Products Department of Biology, University of York, York, YO10 5DD, UK.
| | - Maija Tenkanen
- Department of Food and Environmental Sciences, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, Helsinki, 00014, Finland.
| | - Ewa J Mellerowicz
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, Umeå, 901-83, Sweden.
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22
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Testova L, Roselli A, Costabel L, Kovasin K, Tenkanen M, Sixta H. Combined Production of Polymeric Birch Xylan and Paper Pulp by Alkaline Pre-extraction Followed by Alkaline Cooking. Ind Eng Chem Res 2014. [DOI: 10.1021/ie500694c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lidia Testova
- Department
of Forest Products Technology, Aalto University School of Chemical Technology, P.O. Box
16300, Vuorimiehentie 1, Espoo, FI-00076 Aalto, Finland
| | - Annariikka Roselli
- Department
of Forest Products Technology, Aalto University School of Chemical Technology, P.O. Box
16300, Vuorimiehentie 1, Espoo, FI-00076 Aalto, Finland
| | - Luciana Costabel
- Department
of Forest Products Technology, Aalto University School of Chemical Technology, P.O. Box
16300, Vuorimiehentie 1, Espoo, FI-00076 Aalto, Finland
| | - Kari Kovasin
- Metsä
Fibre Oy, P.O. Box 165, Maanpääntie 9, Rauma, FI-26101, Finland
| | - Maija Tenkanen
- Department
of Food and Environmental Sciences, University of Helsinki, P.O. Box 66, Agnes Sjöbergin katu 2, Helsinki, FI-00014, Finland
| | - Herbert Sixta
- Department
of Forest Products Technology, Aalto University School of Chemical Technology, P.O. Box
16300, Vuorimiehentie 1, Espoo, FI-00076 Aalto, Finland
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23
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Chong SL, Virkki L, Maaheimo H, Juvonen M, Derba-Maceluch M, Koutaniemi S, Roach M, Sundberg B, Tuomainen P, Mellerowicz EJ, Tenkanen M. O-Acetylation of glucuronoxylan in Arabidopsis thaliana wild type and its change in xylan biosynthesis mutants. Glycobiology 2014; 24:494-506. [DOI: 10.1093/glycob/cwu017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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24
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Manabe Y, Verhertbruggen Y, Gille S, Harholt J, Chong SL, Pawar PMA, Mellerowicz EJ, Tenkanen M, Cheng K, Pauly M, Scheller HV. Reduced Wall Acetylation proteins play vital and distinct roles in cell wall O-acetylation in Arabidopsis. PLANT PHYSIOLOGY 2013; 163:1107-17. [PMID: 24019426 PMCID: PMC3813637 DOI: 10.1104/pp.113.225193] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/03/2013] [Indexed: 05/17/2023]
Abstract
The Reduced Wall Acetylation (RWA) proteins are involved in cell wall acetylation in plants. Previously, we described a single mutant, rwa2, which has about 20% lower level of O-acetylation in leaf cell walls and no obvious growth or developmental phenotype. In this study, we generated double, triple, and quadruple loss-of-function mutants of all four members of the RWA family in Arabidopsis (Arabidopsis thaliana). In contrast to rwa2, the triple and quadruple rwa mutants display severe growth phenotypes revealing the importance of wall acetylation for plant growth and development. The quadruple rwa mutant can be completely complemented with the RWA2 protein expressed under 35S promoter, indicating the functional redundancy of the RWA proteins. Nevertheless, the degree of acetylation of xylan, (gluco)mannan, and xyloglucan as well as overall cell wall acetylation is affected differently in different combinations of triple mutants, suggesting their diversity in substrate preference. The overall degree of wall acetylation in the rwa quadruple mutant was reduced by 63% compared with the wild type, and histochemical analysis of the rwa quadruple mutant stem indicates defects in cell differentiation of cell types with secondary cell walls.
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Affiliation(s)
- Yuzuki Manabe
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Yves Verhertbruggen
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | | | - Jesper Harholt
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Sun-Li Chong
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Prashant Mohan-Anupama Pawar
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Ewa J. Mellerowicz
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Maija Tenkanen
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Kun Cheng
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
| | - Markus Pauly
- Joint BioEnergy Institute, Feedstocks Division, Emeryville, California 94608 (Y.M., Y.V., H.V.S.); Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (Y.M., Y.V., H.V.S.)
- Energy Biosciences Institute, Berkeley, California 94720 (S.G., K.C., M.P.)
- Department of Plant and Environmental Sciences, University of Copenhagen, DK–1871 Frederiksberg, Denmark (J.H.)
- Department of Food and Environmental Sciences, University of Helsinki, FI–00014 Helsinki, Finland (S.-L.C., M.T.)
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 901 83 Umea, Sweden (P.M.-A.P., E.J.M); and
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720 (M.P., H.V.S.)
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25
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Koutaniemi S, van Gool MP, Juvonen M, Jokela J, Hinz SW, Schols HA, Tenkanen M. Distinct roles of carbohydrate esterase family CE16 acetyl esterases and polymer-acting acetyl xylan esterases in xylan deacetylation. J Biotechnol 2013; 168:684-92. [PMID: 24140638 DOI: 10.1016/j.jbiotec.2013.10.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 10/02/2013] [Accepted: 10/07/2013] [Indexed: 10/26/2022]
Abstract
Mass spectrometric analysis was used to compare the roles of two acetyl esterases (AE, carbohydrate esterase family CE16) and three acetyl xylan esterases (AXE, families CE1 and CE5) in deacetylation of natural substrates, neutral (linear) and 4-O-methyl glucuronic acid (MeGlcA) substituted xylooligosaccharides (XOS). AEs were similarly restricted in their action and apparently removed in most cases only one acetyl group from the non-reducing end of XOS, acting as exo-deacetylases. In contrast, AXEs completely deacetylated longer neutral XOS but had difficulties with the shorter ones. Complete deacetylation of neutral XOS was obtained after the combined action of AEs and AXEs. MeGlcA substituents partially restricted the action of both types of esterases and the remaining acidic XOS were mainly substituted with one MeGlcA and one acetyl group, supposedly on the same xylopyranosyl residue. These resisting structures were degraded to great extent only after inclusion of α-glucuronidase, which acted with the esterases in a synergistic manner. When used together with xylan backbone degrading endoxylanase and β-xylosidase, both AE and AXE enhanced the hydrolysis of complex XOS equally.
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Affiliation(s)
- S Koutaniemi
- Department of Food and Environmental Chemistry, University of Helsinki, P.O. Box 27, 00014 Helsinki, Finland.
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