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dc.contributor.author
Bondino, Hernán Gabriel
dc.contributor.author
Valle, Estela Marta
dc.date.available
2020-11-16T21:21:35Z
dc.date.issued
2009-12
dc.identifier.citation
Bondino, Hernán Gabriel; Valle, Estela Marta; A small intergenic region drives exclusive tissue-specific expression of the adjacent genes in Arabidopsis thaliana; BioMed Central; BMC Molecular Biology; 10; 12-2009; 95-106
dc.identifier.issn
1471-2199
dc.identifier.uri
http://hdl.handle.net/11336/118477
dc.description.abstract
Transcription initiation by RNA polymerase II is unidirectional from most genes. In plants, divergent genes, defined as non-overlapping genes organized head-to-head, are highly represented in the Arabidopsis genome. Nevertheless, there is scarce evidence on functionalanalyses of these intergenic regions. The At5g06290 and At5g06280 loci are head-to-head oriented and encode a chloroplast-located 2-Cys peroxiredoxin B (2CPB) and a protein of unknown function (PUF), respectively. The 2-Cys peroxiredoxins are proteins involved in redox processes, they are part of the plant antioxidant defence and also act as chaperons. In this study, the transcriptional activity of a small intergenic region (351 bp) shared by At5g06290 and At5g06280 in Arabidopsis thaliana was characterized.Activity of the intergenic region in both orientations was analyzed by driving the β-glucuronidase (GUS) reporter gene during the development and growth of Arabidopsis plantsunder physiological and stressful conditions. Results have shown that this region drives expression either of 2cpb or puf in photosynthetic or vascular tissues, respectively. GUS expression driven by the promoter in 2cpb orientation was enhanced by heat stress. On the other hand, the promoter in both orientations has shown similar down-regulation of GUS expression under low temperatures and other stress conditions such as mannitol, oxidative stress, or fungal elicitor.The results from this study account for the first evidence of an intergenic region that,in opposite orientation, directs GUS expression in different spatially-localized Arabidopsis tissues in a mutually exclusive manner. Additionally, this is the first demonstration of a small intergenic region that drives expression of a gene whose product is involved in the chloroplast antioxidant defence such as 2cpb. Furthermore, these results contribute to show that 2cpb is related to the heat stress defensive system in leaves and roots of Arabidopsis thaliana.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
BioMed Central
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Bidirectional promoter
dc.subject.classification
Bioquímica y Biología Molecular
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A small intergenic region drives exclusive tissue-specific expression of the adjacent genes in Arabidopsis thaliana
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-05T16:06:53Z
dc.journal.volume
10
dc.journal.pagination
95-106
dc.journal.pais
Emiratos Árabes Unidos
dc.journal.ciudad
Sharjah
dc.description.fil
Fil: Bondino, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
dc.description.fil
Fil: Valle, Estela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
dc.journal.title
BMC Molecular Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.biomedcentral.com/1471-2199/10/95/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1186/1471-2199-10-95
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