51
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Borsacchi S, Calucci L, Geppi M, La Terra F, Pinzino C, Bertoldo M. Characterization of an amylose-graft-poly(n-butyl methacrylate) copolymer obtained by click chemistry by EPR and SS-NMR spectroscopies. Carbohydr Polym 2014; 112:245-54. [DOI: 10.1016/j.carbpol.2014.05.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 04/28/2014] [Accepted: 05/19/2014] [Indexed: 11/28/2022]
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52
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Wübbeler JH, Steinbüchel A. New pathways for bacterial polythioesters. Curr Opin Biotechnol 2014; 29:85-92. [DOI: 10.1016/j.copbio.2014.02.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/24/2014] [Accepted: 02/25/2014] [Indexed: 11/25/2022]
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53
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McQualter RB, Somleva MN, Gebbie LK, Li X, Petrasovits LA, Snell KD, Nielsen LK, Brumbley SM. Factors affecting polyhydroxybutyrate accumulation in mesophyll cells of sugarcane and switchgrass. BMC Biotechnol 2014; 14:83. [PMID: 25209261 PMCID: PMC4165624 DOI: 10.1186/1472-6750-14-83] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 08/29/2014] [Indexed: 12/04/2022] Open
Abstract
Background Polyhydroxyalkanoates are linear biodegradable polyesters produced by bacteria as a carbon store and used to produce a range of bioplastics. Widespread polyhydroxyalkanoate production in C4 crops would decrease petroleum dependency by producing a renewable supply of biodegradable plastics along with residual biomass that could be converted into biofuels or energy. Increasing yields to commercial levels in biomass crops however remains a challenge. Previously, lower accumulation levels of the short side chain polyhydroxyalkanoate, polyhydroxybutyrate (PHB), were observed in the chloroplasts of mesophyll (M) cells compared to bundle sheath (BS) cells in transgenic maize (Zea mays), sugarcane (Saccharum sp.), and switchgrass (Panicum virgatum L.) leading to a significant decrease in the theoretical yield potential. Here we explore various factors which might affect polymer accumulation in mesophyll cells, including targeting of the PHB pathway enzymes to the mesophyll plastid and their access to substrate. Results The small subunit of Rubisco from pea effectively targeted the PHB biosynthesis enzymes to both M and BS chloroplasts of sugarcane and switchgrass. PHB enzyme activity was retained following targeting to M plastids and was equivalent to that found in the BS plastids. Leaf total fatty acid content was not affected by PHB production. However, when fatty acid synthesis was chemically inhibited, polymer accumulated in M cells. Conclusions In this study, we provide evidence that access to substrate and neither poor targeting nor insufficient activity of the PHB biosynthetic enzymes may be the limiting factor for polymer production in mesophyll chloroplasts of C4 plants.
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Affiliation(s)
| | | | | | | | | | | | | | - Stevens M Brumbley
- Australian Institute for Bioengineering and Nanotechnology, the University of Queensland, Brisbane QLD 4072, Australia.
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Fan B, Trant JF, Wong AD, Gillies ER. Polyglyoxylates: A Versatile Class of Triggerable Self-Immolative Polymers from Readily Accessible Monomers. J Am Chem Soc 2014; 136:10116-23. [DOI: 10.1021/ja504727u] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bo Fan
- Department of Chemistry, and ‡Department of
Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - John F. Trant
- Department of Chemistry, and ‡Department of
Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - Andrew D. Wong
- Department of Chemistry, and ‡Department of
Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - Elizabeth R. Gillies
- Department of Chemistry, and ‡Department of
Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
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55
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Influence of microwave heating time on the structure and properties of chitosan films. J Appl Polym Sci 2014. [DOI: 10.1002/app.40779] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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56
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Vilela C, Sousa AF, Fonseca AC, Serra AC, Coelho JFJ, Freire CSR, Silvestre AJD. The quest for sustainable polyesters – insights into the future. Polym Chem 2014. [DOI: 10.1039/c3py01213a] [Citation(s) in RCA: 367] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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57
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Petrasovits LA, McQualter RB, Gebbie LK, Blackman DM, Nielsen LK, Brumbley SM. Chemical inhibition of acetyl coenzyme A carboxylase as a strategy to increase polyhydroxybutyrate yields in transgenic sugarcane. PLANT BIOTECHNOLOGY JOURNAL 2013; 11:1146-51. [PMID: 24112832 DOI: 10.1111/pbi.12109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 07/21/2013] [Accepted: 07/24/2013] [Indexed: 05/11/2023]
Abstract
Polyhydroxybutyrate (PHB) is a naturally occurring bacterial polymer that can be used as a biodegradable replacement for some petrochemical-derived plastics. Polyhydroxybutyrate is produced commercially by fermentation, but to reduce production costs, efforts are underway to produce it in engineered plants, including sugarcane. However, PHB levels in this high-biomass crop are not yet commercially viable. Chemical ripening with herbicides is a strategy used to enhance sucrose production in sugarcane and was investigated here as a tool to increase PHB production. Class A herbicides inhibit ACCase activity and thus reduce fatty acid biosynthesis, with which PHB production competes directly for substrate. Treatment of PHB-producing transgenic sugarcane plants with 100 μM of the class A herbicide fluazifop resulted in a fourfold increase in PHB content in the leaves, which peaked ten days post-treatment. The minimum effective concentration of herbicide required to maximize PHB production was 30 μM for fluazifop and 70 μM for butroxydim when applied to saturation. Application of a range of class A herbicides from the DIM and FOP groups consistently resulted in increased PHB yields, particularly in immature leaf tissue. Butroxydim or fluazifop treatment of mature transgenic sugarcane grown under glasshouse conditions increased the total leaf biomass yield of PHB by 50%-60%. Application of an ACCase inhibitor in the form of a class A herbicide to mature sugarcane plants prior to harvest is a promising strategy for improving overall PHB yield. Further testing is required on field-grown transgenic sugarcane to more precisely determine the effectiveness of this strategy.
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Affiliation(s)
- Lars A Petrasovits
- Australian Institute for Bioengineering and Nanotechnology, the University of Queensland, Brisbane, Qld, Australia
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58
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Breitling R, Ceniceros A, Jankevics A, Takano E. Metabolomics for secondary metabolite research. Metabolites 2013; 3:1076-83. [PMID: 24958266 PMCID: PMC3937839 DOI: 10.3390/metabo3041076] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 10/25/2013] [Accepted: 11/01/2013] [Indexed: 01/26/2023] Open
Abstract
Metabolomics, the global characterization of metabolite profiles, is becoming an increasingly powerful tool for research on secondary metabolite discovery and production. In this review we discuss examples of recent technological advances and biological applications of metabolomics in the search for chemical novelty and the engineered production of bioactive secondary metabolites.
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Affiliation(s)
- Rainer Breitling
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
| | - Ana Ceniceros
- Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborg 7, Groningen 9747 AG, The Netherlands.
| | - Andris Jankevics
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
| | - Eriko Takano
- Manchester Institute of Biotechnology, University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
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59
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Zribi-Maaloul E, Trabelsi I, Elleuch L, Chouayekh H, Ben Salah R. Purification and characterization of two polyhydroxyalcanoates from Bacillus cereus. Int J Biol Macromol 2013; 61:82-8. [DOI: 10.1016/j.ijbiomac.2013.06.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/21/2013] [Accepted: 06/26/2013] [Indexed: 10/26/2022]
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60
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Karamanlioglu M, Robson GD. The influence of biotic and abiotic factors on the rate of degradation of poly(lactic) acid (PLA) coupons buried in compost and soil. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.07.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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61
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Sanchez-Vazquez SA, Hailes HC, Evans JRG. Hydrophobic Polymers from Food Waste: Resources and Synthesis. POLYM REV 2013. [DOI: 10.1080/15583724.2013.834933] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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62
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Bahaji A, Li J, Sánchez-López ÁM, Baroja-Fernández E, Muñoz FJ, Ovecka M, Almagro G, Montero M, Ezquer I, Etxeberria E, Pozueta-Romero J. Starch biosynthesis, its regulation and biotechnological approaches to improve crop yields. Biotechnol Adv 2013; 32:87-106. [PMID: 23827783 DOI: 10.1016/j.biotechadv.2013.06.006] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 06/21/2013] [Indexed: 01/08/2023]
Abstract
Structurally composed of the glucose homopolymers amylose and amylopectin, starch is the main storage carbohydrate in vascular plants, and is synthesized in the plastids of both photosynthetic and non-photosynthetic cells. Its abundance as a naturally occurring organic compound is surpassed only by cellulose, and represents both a cornerstone for human and animal nutrition and a feedstock for many non-food industrial applications including production of adhesives, biodegradable materials, and first-generation bioethanol. This review provides an update on the different proposed pathways of starch biosynthesis occurring in both autotrophic and heterotrophic organs, and provides emerging information about the networks regulating them and their interactions with the environment. Special emphasis is given to recent findings showing that volatile compounds emitted by microorganisms promote both growth and the accumulation of exceptionally high levels of starch in mono- and dicotyledonous plants. We also review how plant biotechnologists have attempted to use basic knowledge on starch metabolism for the rational design of genetic engineering traits aimed at increasing starch in annual crop species. Finally we present some potential biotechnological strategies for enhancing starch content.
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Affiliation(s)
- Abdellatif Bahaji
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Jun Li
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Ángela María Sánchez-López
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Edurne Baroja-Fernández
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Francisco José Muñoz
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Miroslav Ovecka
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain; Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Cell Biology, Faculty of Science, Palacky University, Šlechtitelů 11, CZ-783 71 Olomouc, Czech Republic
| | - Goizeder Almagro
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Manuel Montero
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Ignacio Ezquer
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain
| | - Ed Etxeberria
- University of Florida, Institute of Food and Agricultural Sciences, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850-2299, USA
| | - Javier Pozueta-Romero
- Instituto de Agrobiotecnología (CSIC/UPNA/Gobierno de Navarra), Mutiloako etorbidea z/g, 31192 Mutiloabeti, Nafarroa, Spain.
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63
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Saigo M, Alvarez CE, Andreo CS, Drincovich MF. Plastidial NADP-malic enzymes from grasses: unraveling the way to the C4 specific isoforms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 63:39-48. [PMID: 23228551 DOI: 10.1016/j.plaphy.2012.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 11/06/2012] [Indexed: 05/11/2023]
Abstract
Malic enzyme is present in many plant cell compartments such as plastids, cytosol and mitochondria. Particularly relevant is the plastidial isoform that participates in the C(4) cycle providing CO(2) to RuBisCO in C(4) species. This type of photosynthesis is more frequent among grasses where anatomical preconditioning would have facilitated the evolution of the C(4) syndrome. In maize (C(4) grass), the photosynthetic NADP dependent Malic enzyme (ZmC(4)-NADP-ME, l-malate:NADP oxidoreductase, E.C. 1.1.1.40) and the closest related non-photosynthetic isoform (ZmnonC(4)-NADP-ME, l-malate:NADP oxidoreductase, E.C. 1.1.1.40) are both plastidial but differ in expression pattern, kinetics and structure. Features like high catalytic efficiency, inhibition by high malate concentration at pH 7.0, redox modulation and tetramerization are characteristic of the photosynthetic NADP-ME. In this work, the proteins encoded by sorghum (C(4) grass) and rice (C(3) grass) NADP-ME genes, orthologues of the plastidial NADP-MEs from maize, were recombinantly expressed, purified and characterized. In a global comparison, we could identify a small group of residues which may explain the special features of C(4) enzymes. Overall, the present work presents biochemical and molecular data that helps to elucidate the changes that took place in the evolution of C(4) NADP-ME in grasses.
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Affiliation(s)
- Mariana Saigo
- Centro de Estudios Fotosintéticos y Bioquímicos (CEFOBI), Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina.
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64
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Fox DM, Lee J, Citro CJ, Novy M. Flame retarded poly(lactic acid) using POSS-modified cellulose. 1. Thermal and combustion properties of intumescing composites. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2012.11.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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65
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A low molecular mass cutinase of Thielavia terrestris efficiently hydrolyzes poly(esters). ACTA ACUST UNITED AC 2013; 40:217-26. [DOI: 10.1007/s10295-012-1222-x] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 12/07/2012] [Indexed: 11/29/2022]
Abstract
Abstract
A low molecular mass cutinase (designated TtcutA) from Thielavia terrestris was purified and biochemically characterized. The thermophilic fungus T. terrestris CAU709 secreted a highly active cutinase (90.4 U ml−1) in fermentation broth containing wheat bran as the carbon source. The cutinase was purified 19-fold with a recovery yield of 4.8 %. The molecular mass of the purified TtcutA was determined as 25.3 and 22.8 kDa using SDS-PAGE and gel filtration, respectively. TtcutA displayed optimal activity at pH 4.0 and 50 °C. It was highly stable up to 65 °C and in the broad pH range 2.5–10.5. Extreme stability in high concentrations (80 %, v/v) of solvents such as methanol, ethanol, acetone, acetonitrile, isopropanol, and dimethyl sulfoxide was observed for the enzyme. The K m values for this enzyme towards p-nitrophenyl (pNP) acetate, pNP butyrate, and pNP caproate were 7.7, 1.0, and 0.52 mM, respectively. TtcutA was able to efficiently degrade various ester polymers, including cutin, polyethylene terephthalate (PET), polycaprolactone (PCL), and poly(butylene succinate) (PBS) at hydrolytic rates of 3 μmol h−1 mg−1 protein, 1.1 mg h−1 mg−1 protein, 203.6 mg h−1 mg−1 protein, and 56.4 mg h−1 mg−1 protein, respectively. Because of these unique biochemical properties, TtcutA of T. terrestris may be useful in various industrial applications in the future.
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66
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Morandini P. Control limits for accumulation of plant metabolites: brute force is no substitute for understanding. PLANT BIOTECHNOLOGY JOURNAL 2013; 11:253-267. [PMID: 23301840 DOI: 10.1111/pbi.12035] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 11/13/2012] [Accepted: 11/19/2012] [Indexed: 06/01/2023]
Abstract
Which factors limit metabolite accumulation in plant cells? Are theories on flux control effective at explaining the results? Many biotechnologists cling to the idea that every pathway has a rate limiting enzyme and target such enzymes first in order to modulate fluxes. This often translates into large effects on metabolite concentration, but disappointing small increases in flux. Rate limiting enzymes do exist, but are rare and quite opposite to what predicted by biochemistry. In many cases however, flux control is shared among many enzymes. Flux control and concentration control can (and must) be distinguished and quantified for effective manipulation. Flux control for several 'building blocks' of metabolism is placed on the demand side, and therefore increasing demand can be very successful. Tampering with supply, particularly desensitizing supply enzymes, is usually not very effective, if not dangerous, because supply regulatory mechanisms function to control metabolite homeostasis. Some important, but usually unnoticed, metabolic constraints shape the responses of metabolic systems to manipulation: mass conservation, cellular resource allocation and, most prominently, energy supply, particularly in heterotrophic tissues. The theoretical basis for this view shall be explored with recent examples gathered from the manipulation of several metabolites (vitamins, carotenoids, amino acids, sugars, fatty acids, polyhydroxyalkanoates, fructans and sugar alcohols). Some guiding principles are suggested for an even more successful engineering of plant metabolism.
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Affiliation(s)
- Piero Morandini
- Department of Biosciences, University of Milan and CNR Institute of Biophysics, Milan, Italy.
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67
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Joyce B, Stewart C. Designing the perfect plant feedstock for biofuel production: Using the whole buffalo to diversify fuels and products. Biotechnol Adv 2012; 30:1011-22. [DOI: 10.1016/j.biotechadv.2011.08.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 07/06/2011] [Accepted: 08/04/2011] [Indexed: 11/28/2022]
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68
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Lertpanyasampatha M, Gao L, Kongsawadworakul P, Viboonjun U, Chrestin H, Liu R, Chen X, Narangajavana J. Genome-wide analysis of microRNAs in rubber tree (Hevea brasiliensis L.) using high-throughput sequencing. PLANTA 2012; 236:437-45. [PMID: 22407387 PMCID: PMC3405184 DOI: 10.1007/s00425-012-1622-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 02/26/2012] [Indexed: 05/09/2023]
Abstract
MicroRNAs (miRNAs) are short RNAs with essential roles in gene regulation in various organisms including higher plants. In contrast to the vast information on miRNAs from many economically important plants, almost nothing has been reported on the identification or analysis of miRNAs from rubber tree (Hevea brasiliensis L.), the most important natural rubber-producing crop. To identify miRNAs and their target genes in rubber tree, high-throughput sequencing combined with a computational approach was performed. Four small RNA libraries were constructed for deep sequencing from mature and young leaves of two rubber tree clones, PB 260 and PB 217, which provide high and low latex yield, respectively. 115 miRNAs belonging to 56 known miRNA families were identified, and northern hybridization validated miRNA expression and revealed developmental stage-dependent and clone-specific expression for some miRNAs. We took advantage of the newly released rubber tree genome assembly and predicted 20 novel miRNAs. Further, computational analysis uncovered potential targets of the known and novel miRNAs. Predicted target genes included not only transcription factors but also genes involved in various biological processes including stress responses, primary and secondary metabolism, and signal transduction. In particular, genes with roles in rubber biosynthesis are predicted targets of miRNAs. This study provides a basic catalog of miRNAs and their targets in rubber tree to facilitate future improvement and exploitation of rubber tree.
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Affiliation(s)
- Manassawe Lertpanyasampatha
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Rd., Rajthewee, Bangkok 10400, Thailand
| | - Lei Gao
- Department of Botany and Plant Sciences, Institute of Integrative Genome Biology, University of California, Riverside, CA 92521, USA
| | | | - Unchera Viboonjun
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Hervé Chrestin
- Institut de Recherche pour le Développement (IRD), Montpellier, France
| | - Renyi Liu
- Department of Botany and Plant Sciences, Institute of Integrative Genome Biology, University of California, Riverside, CA 92521, USA
| | - Xuemei Chen
- Department of Botany and Plant Sciences, Institute of Integrative Genome Biology, University of California, Riverside, CA 92521, USA
| | - Jarunya Narangajavana
- Department of Biotechnology, Faculty of Science, Mahidol University, Rama 6 Rd., Rajthewee, Bangkok 10400, Thailand
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69
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Murphy DJ. The dynamic roles of intracellular lipid droplets: from archaea to mammals. PROTOPLASMA 2012; 249:541-85. [PMID: 22002710 DOI: 10.1007/s00709-011-0329-7] [Citation(s) in RCA: 170] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 09/28/2011] [Indexed: 05/02/2023]
Abstract
During the past decade, there has been a paradigm shift in our understanding of the roles of intracellular lipid droplets (LDs). New genetic, biochemical and imaging technologies have underpinned these advances, which are revealing much new information about these dynamic organelles. This review takes a comparative approach by examining recent work on LDs across the whole range of biological organisms from archaea and bacteria, through yeast and Drosophila to mammals, including humans. LDs probably evolved originally in microorganisms as temporary stores of excess dietary lipid that was surplus to the immediate requirements of membrane formation/turnover. LDs then acquired roles as long-term carbon stores that enabled organisms to survive episodic lack of nutrients. In multicellular organisms, LDs went on to acquire numerous additional roles including cell- and organism-level lipid homeostasis, protein sequestration, membrane trafficking and signalling. Many pathogens of plants and animals subvert their host LD metabolism as part of their infection process. Finally, malfunctions in LDs and associated proteins are implicated in several degenerative diseases of modern humans, among the most serious of which is the increasingly prevalent constellation of pathologies, such as obesity and insulin resistance, which is associated with metabolic syndrome.
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Affiliation(s)
- Denis J Murphy
- Division of Biological Sciences, University of Glamorgan, Cardiff, CF37 4AT, UK.
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70
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Petrasovits LA, Zhao L, McQualter RB, Snell KD, Somleva MN, Patterson NA, Nielsen LK, Brumbley SM. Enhanced polyhydroxybutyrate production in transgenic sugarcane. PLANT BIOTECHNOLOGY JOURNAL 2012; 10:569-78. [PMID: 22369516 DOI: 10.1111/j.1467-7652.2012.00686.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Polyhydroxybutyrate (PHB) is a bacterial polyester that has properties similar to some petrochemically produced plastics. Plant-based production has the potential to make this biorenewable plastic highly competitive with petrochemical-based plastics. We previously reported that transgenic sugarcane produced PHB at levels as high as 1.8% leaf dry weight without penalty to biomass accumulation, suggesting scope for improving PHB production in this species. In this study, we used different plant and viral promoters, in combination with multigene or single-gene constructs to increase PHB levels. Promoters tested included the maize and rice polyubiquitin promoters, the maize chlorophyll A/B-binding protein promoter and a Cavendish banana streak badnavirus promoter. At the seedling stage, the highest levels of polymer were produced in sugarcane plants when the Cavendish banana streak badnavirus promoter was used. However, in all cases, this promoter underwent silencing as the plants matured. The rice Ubi promoter enabled the production of PHB at levels similar to the maize Ubi promoter. The maize chlorophyll A/B-binding protein promoter enabled the production of PHB to levels as high as 4.8% of the leaf dry weight, which is approximately 2.5 times higher than previously reported levels in sugarcane. This is the first time that this promoter has been tested in sugarcane. The highest PHB-producing lines showed phenotypic differences to the wild-type parent, including reduced biomass and slight chlorosis.
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Affiliation(s)
- Lars A Petrasovits
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, Brisbane, Queensland, Australia
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71
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Pillai CKS. Challenges for Natural Monomers and Polymers: Novel Design Strategies and Engineering to Develop Advanced Polymers. Des Monomers Polym 2012. [DOI: 10.1163/138577210x12634696333190] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- C. K. S. Pillai
- a Chemical Sciences and Technology Division, Regional Research Laboratory (Now NIIST), Thiruvanananthapuram-695 019, India
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Ji J, Li B, Zhong WH. Effects of Soy Protein on the Crystallization and Dielectric Properties of PEG/PEG Copolymers. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201100684] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wilken LR, Nikolov ZL. Recovery and purification of plant-made recombinant proteins. Biotechnol Adv 2012; 30:419-33. [DOI: 10.1016/j.biotechadv.2011.07.020] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 03/22/2011] [Accepted: 07/25/2011] [Indexed: 12/24/2022]
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Çalgeris İ, Çakmakçı E, Ogan A, Kahraman MV, Kayaman-Apohan N. Preparation and drug release properties of lignin-starch biodegradable films. STARCH-STARKE 2012. [DOI: 10.1002/star.201100158] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ajiro H, Hsiao YJ, Thi TH, Fujiwara T, Akashi M. A stereocomplex of poly(lactide)s with chain end modification: simultaneous resistances to melting and thermal decomposition. Chem Commun (Camb) 2012; 48:8478-80. [DOI: 10.1039/c2cc33589a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rhee MS, Moritz BE, Xie G, Glavina del Rio T, Dalin E, Tice H, Bruce D, Goodwin L, Chertkov O, Brettin T, Han C, Detter C, Pitluck S, Land ML, Patel M, Ou M, Harbrucker R, Ingram LO, Shanmugam KT. Complete Genome Sequence of a thermotolerant sporogenic lactic acid bacterium, Bacillus coagulans strain 36D1. Stand Genomic Sci 2011; 5:331-40. [PMID: 22675583 PMCID: PMC3368420 DOI: 10.4056/sigs.2365342] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bacillus coagulans is a ubiquitous soil bacterium that grows at 50-55 °C and pH 5.0 and ferments various sugars that constitute plant biomass to L (+)-lactic acid. The ability of this sporogenic lactic acid bacterium to grow at 50-55 °C and pH 5.0 makes this organism an attractive microbial biocatalyst for production of optically pure lactic acid at industrial scale not only from glucose derived from cellulose but also from xylose, a major constituent of hemicellulose. This bacterium is also considered as a potential probiotic. Complete genome sequence of a representative strain, B. coagulans strain 36D1, is presented and discussed.
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Affiliation(s)
- Mun Su Rhee
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Brélan E. Moritz
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Gary Xie
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | | | - E. Dalin
- Joint Genome Institute, Walnut Creek, CA, USA
| | - H. Tice
- Joint Genome Institute, Walnut Creek, CA, USA
| | - D. Bruce
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | - L. Goodwin
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | - O. Chertkov
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | - T. Brettin
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - C. Han
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | - C. Detter
- Bioscience Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
- Joint Genome Institute, Walnut Creek, CA, USA
| | - S. Pitluck
- Joint Genome Institute, Walnut Creek, CA, USA
| | | | - Milind Patel
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Mark Ou
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Roberta Harbrucker
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - Lonnie O. Ingram
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
| | - K. T. Shanmugam
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA
- Corresponding author:
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Pankova Y, Shchegolikhin A, Iordanskii A, Zhulkina A, Ol’khov A, Zaikov G. The Characterization of Novel Biodegradable Blends Based on Polyhydroxybutyrate. CHEMISTRY & CHEMICAL TECHNOLOGY 2011. [DOI: 10.23939/chcht05.03.333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Identification and comparison of cutinases for synthetic polyester degradation. Appl Microbiol Biotechnol 2011; 93:229-40. [DOI: 10.1007/s00253-011-3402-4] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 05/17/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
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Accinelli C, Abbas HK. New perspectives for the application of bioplastic materials in the biocontrol ofAspergillus flavusin corn. TOXIN REV 2011. [DOI: 10.3109/15569543.2011.591517] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Synergistic effect between expandable graphite and ammonium polyphosphate on flame retarded polylactide. Polym Degrad Stab 2011. [DOI: 10.1016/j.polymdegradstab.2010.11.017] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pankova Y, Shchegolikhin A, Iordanskii A, Zhulkina A, Ol'khov A, Zaikov G. The characterization of novel biodegradable blends based on polyhydroxybutyrate: The role of water transport. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2010.04.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Current advances in microbial cell factories for lactate-based polyesters driven by lactate-polymerizing enzymes: Towards the further creation of new LA-based polyesters. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.01.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Corrado G, Karali M. Inducible gene expression systems and plant biotechnology. Biotechnol Adv 2009; 27:733-743. [DOI: 10.1016/j.biotechadv.2009.05.006] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2009] [Revised: 05/07/2009] [Accepted: 05/08/2009] [Indexed: 11/29/2022]
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