NAC transcription factor: Difference between revisions
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< | <StructureSection load='1UT7' size='350' side='right' scene='' caption='Functional NAC dimer complex with Au+ ion, [[1ut7]]'> | ||
== Function == | == Function == | ||
'''Vascular-related NAC-domain transcription factor''' (VND) is one group of the largest plant-specific transcription factor NAC family. The VND1-VND7 were orginally isolated as genes for which expression levels are elevated during transdifferentiation into trachery elements, in a induction system using Arabidopsis suspension cells <ref name="GENEDEV">http://genesdev.cshlp.org/content/19/16/1855.full.pdf</ref>.In the past several years, VNDs have been intensively investigated in different species and shown to be important switches of the biosynthesis of secondary cell walls that provide textiles, timber, and potentially second-generation bio-fuels for human use<ref name="oxford">http://mplant.oxfordjournals.org/content/early/2011/12/01/mp.ssr098.full.pdf+html | '''Vascular-related NAC-domain transcription factor''' (VND) is one group of the largest plant-specific transcription factor NAC family. The VND1-VND7 were orginally isolated as genes for which expression levels are elevated during transdifferentiation into trachery elements, in a induction system using Arabidopsis suspension cells <ref name="GENEDEV">http://genesdev.cshlp.org/content/19/16/1855.full.pdf</ref>.In the past several years, VNDs have been intensively investigated in different species and shown to be important switches of the biosynthesis of secondary cell walls that provide textiles, timber, and potentially second-generation bio-fuels for human use<ref name="oxford">http://mplant.oxfordjournals.org/content/early/2011/12/01/mp.ssr098.full.pdf+html | ||
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In vascular vessel, VND6 and VND7 control both secondary cell development and programmed cell death of vessels in both root and shoot tissues <ref name="GENEDEV">http://genesdev.cshlp.org/content/19/16/1855.full.pdf</ref> <ref>http://onlinelibrary.wiley.com/doi/10.1111/j.1365-313X.2008.03533.x/pdf | In vascular vessel, VND6 and VND7 control both secondary cell development and programmed cell death of vessels in both root and shoot tissues <ref name="GENEDEV">http://genesdev.cshlp.org/content/19/16/1855.full.pdf</ref> <ref>http://onlinelibrary.wiley.com/doi/10.1111/j.1365-313X.2008.03533.x/pdf | ||
</ref>. The over-expression of VND6 and VND7 can induce ectopic differentiation of two different types of vessel elements: proto-xylem, and meta-xylem vessels. Reversely, the functional repression of VND6 and VND7 can inhibit vessel element formation. Additionally, the excellent works finished by Ye lab showed that the Arabidopsis VND6 and VND7 can complement the NST1NST3 double mutant phenotype, indicating that VNDs share the conserved functions with other secondary cell wall regulators <ref name="plantbio"> http://www.plantbio.uga.edu/~zhye/2010-SWNTargets.pdf</ref>. Then they found that the poplar VNDs can complement the Arabidopsis cell wall development defective mutant NST1NST3, suggesting that the conserved function of VNDs among different species <ref>http://www.plantbio.uga.edu/~zhye/2010-PtrWND.pdf</ref>. Recently, the downstream genes of VND6 and VND7 were identified by the excellent works mainly done by Demura lab, Ye lab and Fukuda lab <ref name="online">http://onlinelibrary.wiley.com/doi/10.1111/j.1365-313X.2011.04514.x/pdf</ref> <ref name="plantbio"> http://www.plantbio.uga.edu/~zhye/2010-SWNTargets.pdf</ref> <ref>http://www.plantcell.org/content/22/10/3461.full.pdf+html</ref>. Both VND6 and VND7 regulates a battery of genes that are common with the downstream of SND1 (secondary cell wall related NAC domain transcription factor), a well known fiber developmental switch. The common downstream genes of VND6, VND7, and SND1 were MYBs transcription factor that have been identified as important regulators of secondary cell wall biosynthesis. However, VND6 and VND7 regulated LBD (Late organ boundery domain) transcription factor that involved in programmed cell death, indicating the important role of VND6 and VND7 in vessel development. The further elucidation of regulatory ways of VNDs not only promote our knowledge in vessel development, but also facilitate the engineering of plant stocks stem from cell wall suitable for biofuel production. | </ref>. The over-expression of VND6 and VND7 can induce ectopic differentiation of two different types of vessel elements: proto-xylem, and meta-xylem vessels. Reversely, the functional repression of VND6 and VND7 can inhibit vessel element formation. Additionally, the excellent works finished by Ye lab showed that the Arabidopsis VND6 and VND7 can complement the NST1NST3 double mutant phenotype, indicating that VNDs share the conserved functions with other secondary cell wall regulators <ref name="plantbio"> http://www.plantbio.uga.edu/~zhye/2010-SWNTargets.pdf</ref>. Then they found that the poplar VNDs can complement the Arabidopsis cell wall development defective mutant NST1NST3, suggesting that the conserved function of VNDs among different species <ref>http://www.plantbio.uga.edu/~zhye/2010-PtrWND.pdf</ref>. Recently, the downstream genes of VND6 and VND7 were identified by the excellent works mainly done by Demura lab, Ye lab and Fukuda lab <ref name="online">http://onlinelibrary.wiley.com/doi/10.1111/j.1365-313X.2011.04514.x/pdf</ref> <ref name="plantbio"> http://www.plantbio.uga.edu/~zhye/2010-SWNTargets.pdf</ref> <ref>http://www.plantcell.org/content/22/10/3461.full.pdf+html</ref>. Both VND6 and VND7 regulates a battery of genes that are common with the downstream of SND1 (secondary cell wall related NAC domain transcription factor), a well known fiber developmental switch. The common downstream genes of VND6, VND7, and SND1 were MYBs transcription factor that have been identified as important regulators of secondary cell wall biosynthesis. However, VND6 and VND7 regulated LBD (Late organ boundery domain) transcription factor that involved in programmed cell death, indicating the important role of VND6 and VND7 in vessel development. The further elucidation of regulatory ways of VNDs not only promote our knowledge in vessel development, but also facilitate the engineering of plant stocks stem from cell wall suitable for biofuel production. | ||
</StructureSection> | |||
== 3D Structures of NAC transcription factor == | == 3D Structures of NAC transcription factor == | ||