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Identification and Characterization of Switchgrass Histone H3 and CENH3 Genes

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dc.contributor.authorMiao, Jiaminen
dc.contributor.authorFrazier, Taylor P.en
dc.contributor.authorHuang, Linkaien
dc.contributor.authorZhang, Xinquanen
dc.contributor.authorZhao, Bingyu Y.en
dc.date.accessioned2018-01-23T13:33:54Zen
dc.date.available2018-01-23T13:33:54Zen
dc.date.issued2016en
dc.description.abstractSwitchgrass is one of the most promising energy crops and only recently has been employed for biofuel production. The draft genome of switchgrass was recently released; however, relatively few switchgrass genes have been functionally characterized. CENH3, the major histone protein found in centromeres, along with canonical H3 and other histones, plays an important role in maintaining genome stability and integrity. Despite their importance, the histone H3 genes of switchgrass have remained largely uninvestigated. In this study, we identified 17 putative switchgrass histone H3 genes in silico. Of these genes, 15 showed strong homology to histone H3 genes including six H3.1 genes, three H3.3 genes, four H3.3-like genes and two H3.1-like genes. The remaining two genes were found to be homologous to CENH3. RNA-seq data derived from lowland cultivar Alamo and upland cultivar Dacotah allowed us to identify SNPs in the histone H3 genes and compare their differential gene expression. Interestingly, we also found that overexpression of switchgrass histone H3 and CENH3 genes in N. benthamiana could trigger cell death of the transformed plant cells. Localization and deletion analyses of the histone H3 and CENH3 genes revealed that nuclear localization of the N-terminal tail is essential and sufficient for triggering the cell death phenotype. Our results deliver insight into the mechanisms underlying the histone-triggered cell death phenotype and provide a foundation for further studying the variations of the histone H3 and CENH3 genes in switchgrass.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.3389/fpls.2016.00979en
dc.identifier.issn1664-462Xen
dc.identifier.urihttp://hdl.handle.net/10919/81896en
dc.identifier.volume7en
dc.language.isoenen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/27462323en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectAgrobacterium-mediated transient assayen
dc.subjectCENH3en
dc.subjectPanicum virgatum L.en
dc.subjectcell deathen
dc.subjecthistone H3en
dc.titleIdentification and Characterization of Switchgrass Histone H3 and CENH3 Genesen
dc.title.serialFrontiers in Plant Scienceen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dcterms.dateAccepted2016-06-21en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciencesen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/CALS T&R Facultyen
pubs.organisational-group/Virginia Tech/Agriculture & Life Sciences/Horticultureen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/University Research Institutesen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciencesen
pubs.organisational-group/Virginia Tech/University Research Institutes/Fralin Life Sciences/Fralin Affiliated Facultyen

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