Abstract
Switchgrass is a perennial C4 grass that thrives in a wide range of North American habitats and is an emerging crop for the production of lignocellulosic biofuels. Lignin is an integral component of secondary plant cell walls that provides structural rigidity to the cell wall but it interferes with the conversion of cellulose to fermentable sugars by preventing chemical access to cellulose. Thus, one strategy for improving production of cellulosic ethanol is the down-regulation of lignin in plants. To achieve this goal, it is important to understand the molecular processes involved in vascular tissue development, lignification and secondary wall synthesis. Since active lignification occurs in the vascular system of the plant, we refined a protocol for isolating vascular tissues using laser-capture microdissection (LCM) in an effort to identify transcripts of switchgrass involved in lignification and secondary cell wall synthesis. ESTs (5,734) were sequenced from the cDNA libraries derived from laser microdissected vascular tissues. These Sanger sequences converged into 2,766 unigenes with an average length of 652 bp. Gene ontology of the unigenes indicated that 11% of the sequences were lignin and cell wall related. Several transcription factors involved in lignin and secondary cell wall synthesis and sugar- or vesicle-mediated transporters were also present in this EST data set. In situ hybridization of seven representative genes confirmed the preferential expression of five genes in the vascular tissues. Comparison of our switchgrass vascular tissue derived ESTs with that of other plant species validated our LCM approach. Furthermore, our switchgrass vascular tissue ESTs revealed additional lignin and cell wall related genes that were not present in other existing switchgrass EST collections. Inventory of the switchgrass vascular tissue ESTs presented here provides an important genomic resource for mining genes to reduce recalcitrance in this important bioenergy crop.




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Asano T, Masumura T, Kusano H, Kikuchi S, Kurita A, Shimata H et al (2002) Construction of a specialized cDNA library from plant cells isolated by laser capture microdissection: toward comprehensive analysis of the genes expressed in the rice phloem. Plant J 32:401–408
Balat M (2008) Global trends on the processing of bio-fuels. Intl J Green Energy 5:212–238
Botella MA, Amaya I, Valpuesta V (2000) A tomato peroxidase involved in the synthesis of lignin and suberin. Plant Physiol 122:1119–1127
Botella MA, Quesada MA, Kononowicz AK, Bressan RA, Pliego F, Hasegawa PM et al (1994) Characterization and in situ localization of a salt-induced tomato peroxidase mRNA. Plant Mol Biol 25:105–114
Bouton JH (2007) Molecular breeding of switchgrass for use as a biofuel crop. Curr Opin Genet Dev 17:553–558
Broeck HCvd, Maliepaard C, Ebskamp MJM, Toonen MAJ, Koops AJ (2008) Differential expression of genes involved in C1 metabolism and lignin biosynthesis in wooden core and bast tissues of fiber hemp (Cannabis sativa l.). Plant Sci 174:205–220
Carjuzaa P, Castellión M, Distéfano AJ, Del Vas M, Maldonado S (2008) Detection and subcellular localization of dehydrin-like proteins in quinoa (Chenopodium quinoa willd.) embryos. Protoplasma 233:149–156
Carpin S, Crevecoeur M, Greppin H, Penel C (1999) Molecular cloning and tissue-specific expression of an anionic peroxidase in Zucchini. Plant Physiol 120:799–810
Chapple C, Carpita N (1998) Plant cell walls as targets for biotechnology. Curr Opin Plant Biol 1:179–185
Chen F, Dixon RA (2007) Lignin modification improves fermentable sugar yields for biofuel production. Nature Biotechnol 25:759–761
Davin LB, Jourdes M, Patten AM, Kim KW, Vassão DG, Lewis NG (2008) Dissection of lignin macromolecular configuration and assembly: comparison to related biochemical processes in allyl/propenyl phenol and lignan biosynthesis. Nat Prod Rep 25(6):1015–1090
Davin LB, Lewis NG (2000) Dirigent proteins and dirigent sites explain the mystery of specificity of radical precursor coupling in lignan and lignin biosynthesis. Plant Physiol 123:453–462
Davin LB, Lewis NG (2005) Lignin primary structures and dirigent sites. Curr Opin Biotechnol 16(4):407–415
Day A, Addi M, Kim W, David H, Bert F, Mesnage P et al (2005) ESTs from the fibre-bearing stem tissues of flax (Linum usitatissimum l.): expression analyses of sequences related to cell wall development. Plant Biol 7:23–32
Deeken R, Ache P, Kajahn I, Klinkenberg J, Bringmann G, Hedrich R (2008) Identification of Arabidopsis thaliana phloem RNAs provides a search criterion for phloem-based transcripts hidden in complex datasets of microarray experiments. Plant J 55:746–759
Dejun L, Chunhua Y, Xiaobing L, Guobiao J, Lihuang Z (2008) Sense and antisense osdof12 transcripts in rice. BMC Mol Biol 9:80
Dixon RA, Lamb CJ (1990) Molecular communication in interactions between plants and microbial pathogens. Ann Rev Plant Biol 41:339–367
Gomez SK, Harrison MJ (2009) Laser microdissection and its application to analyze gene expression in arbuscular mycorrhizal symbiosis. Pest Manag Sci 65:504–511
Ivashikina N, Deeken R, Ache P, Kranz E, Pommerrenig B, Sauer N et al (2003) Isolation of Atsuc2 promoter-gfp-marked companion cells for patch-clamp studies and expression profiling. Plant J 36:931–938
Kawaoka A, Ebinuma H (2001) Transcriptional control of lignin biosynthesis by tobacco LIM protein. Phytochem 57:1149–1157
Keller B, Templeton MD, Lamb CJ (1989) Specific localization of a plant cell wall glycine-rich protein in protoxylem cells of the vascular system. Proc Natl Acad Sci 86:1529–1533
Kerk NM, Ceserani T, Tausta SL, Sussex IM, Nelson TM (2003) Laser capture microdissection of cells from plant tissues. Plant Physiol 132:27–35
Keshwani DR, Cheng JJ (2009) Switchgrass for bioethanol and other value-added applications: a review. Bioresour Technol 100:1515–1523
Lopez-Casado G, Urbanowicz BR et al (2008) Plant glycosyl hydrolases and biofuels: a natural marriage. Curr Opin Plant Biol 11:329–337
Lucena MA, Romero-Aranda R, Mercado JA, Cuartero J, Valpuesta V, Quesada MA (2003) Structural and physiological changes in the roots of tomato plants over-expressing a basic peroxidase. Physiol Plant 118:422–429
Mira H, Martinez-Garcia F, Penarrubia L (2001) Evidence for the plant-specific intercellular transport of the Arabidopsis copper chaperone CCH. Plant J 25:521–528
Mulkey VR, Owens VN, Lee DK (2008) Management of warm-season grass mixtures for biomass production in South Dakota USA. Bioresour Technol 99:609–617
Müse G, Schindler T, Bergfeld R, Ruel K, Jacquet G, Lapierre C et al (1997) Structure and distribution of lignin in primary and secondary cell walls of maize coleoptiles analyzed by chemical and immunological probes. Planta 201:146–159
Nakazono M, Qiu F, Borsuk LA, Schnable PS (2003) Laser-capture microdissection, a tool for the global analysis of gene expression in specific plant cell types: identification of genes expressed differentially in epidermal cells or vascular tissues of maize. Plant Cell 15:583
Nelson T, Tausta SL, Gandotra N, Liu T (2006) Laser microdissection of plant tissue: what you see is what you get. Annu Rev Plant Biol 57:181–201
Pommerrenig B, Barth I, Niedermeier M, Kopp S, Schmid J, Dwyer RA et al (2006) Common plantain. A collection of expressed sequence tags from vascular tissue and a simple and efficient transformation method. Plant Physiol 142:1427
Quiroga M, Guerrero C, Botella MA, Barcelo A, Amaya I, Medina MI et al (2000) A tomato peroxidase involved in the synthesis of lignin and suberin. Plant Physiol 122:1119–1128
Riechmann JL, Heard J, Martin G, Reuber L, Jiang ZC et al (2000) Arabidopsis transcription factors: genome-wide comparative analysis among eukaryotes. Sci 290:2105–2110
Rubin EM (2008) Genomics of cellulosic biofuels. Nature 454(7206):841–845
Sarath G, Mitchell RB, Sattler SE, Funnell D, Pedersen JF, Graybosch RA et al (2008) Opportunities and roadblocks in utilizing forages and small grains for liquid fuels. J Ind Microbiol Biotech 35:343–354
Schmer MR, Vogel KP, Mitchell RB, Perrin RK (2008) Net energy of cellulosic ethanol from switchgrass. Proc Natl Acad Sci 105:464
Sticklen MB (2008) Plant genetic engineering for biofuel production: towards affordable cellulosic ethanol. Nat Rev Genet 9:433–443
Tobias CM, Sarath G, Twigg P, Lindquist E, Pangilinan J, Penning B et al (2008) Comparative genomics in switchgrass using 61,585 high-quality expressed sequence tags. The Pl Genome 1:111–124
Tobias CM, Twigg P, Hayden DM, Vogel KP, Mitchell RM, Lazo GR et al (2005) Analysis of expressed sequence tags and the identification of associated short tandem repeats in switchgrass. TAG Theor Appl Genetics 111:956–964
Zhong RQ, Lee CH, Zhou JL, McCarthy RL, Ye ZH (2008) A battery of transcription factors involved in the regulation of secondary cell wall biosynthesis in Arabidopsis. Plant Cell 20:2763–2782
Acknowledgments
We thank Drs Zengyu Wang and Jiyi Zhang for critical reading of the manuscript, and Dr. Ji He, for assistance with the EST data analysis. The research described in this paper was carried out as part of the BESC (The BioEnergy Science Center is a U.S. Department of Energy Bioenergy Research Center supported by the Office of Biological and Environmental Research in the DOE Office of Science US Department of Energy) and also funded by the Samuel Roberts Noble Foundation. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of the authors expressed herein do not necessarily reflect those of the United States Government or any agency thereof.
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Supplementary Table 1
List of transcripts in switchgrass vascular tissues (XLS 327 kb)
Supplementary Table 2
List of oligo probes used for in situ hybridization (DOC 28 kb)
Supplemental File 1
Sequence file of the unigene set (DOC 2526 kb)
Supplemental File 2
List of unigenes obtained from switchgrass vascular bundles which did not match with existing switchgrass EST data (DOC 23 kb)
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Srivastava, A.C., Palanichelvam, K., Ma, J. et al. Collection and Analysis of Expressed Sequence Tags Derived from Laser Capture Microdissected Switchgrass (Panicum virgatum L. Alamo) Vascular Tissues. Bioenerg. Res. 3, 278–294 (2010). https://doi.org/10.1007/s12155-010-9080-8
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DOI: https://doi.org/10.1007/s12155-010-9080-8


