NDLI: Molecular characterization of Quercus suber MYB1, a transcription factor up-regulated in cork tissues.

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Molecular characterization of Quercus suber MYB1, a transcription factor up-regulated in cork tissues.

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Molecular characterization of Quercus suber MYB1, a transcription factor up-regulated in cork tissues.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Almeida, Tânia Menéndez, Esther Capote, Tiago Ribeiro, Teresa Santos, Conceição Gonçalves, Sónia
Description	Country affiliation: Portugal Author Affiliation: Almeida T ( Centro de Biotecnologia Agrícola e Agro-Alimentar do Baixo Alentejo e Litoral (CEBAL)/Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal.)
Abstract	The molecular processes associated with cork development in Quercus suber L. are poorly understood. A previous molecular approach identified a list of genes potentially important for cork formation and differentiation, providing a new basis for further molecular studies. This report is the first molecular characterization of one of these candidate genes, QsMYB1, coding for an R2R3-MYB transcription factor. The R2R3-MYB gene sub-family has been described as being involved in the phenylpropanoid and lignin pathways, both involved in cork biosynthesis. The results showed that the expression of QsMYB1 is putatively mediated by an alternative splicing (AS) mechanism that originates two different transcripts (QsMYB1.1 and QsMYB1.2), differing only in the 5'-untranslated region, due to retention of the first intron in one of the variants. Moreover, within the retained intron, a simple sequence repeat (SSR) was identified. The upstream regulatory region of QsMYB1 was extended by a genome walking approach, which allowed the identification of the putative gene promoter region. The relative expression pattern of QsMYB1 transcripts determined by reverse transcription quantitative polymerase chain reaction (RT-qPCR) revealed that both transcripts were up-regulated in cork tissues; the detected expression was several times higher in newly formed cork harvested from trees producing virgin, second or reproduction cork when compared with wood. Moreover, the expression analysis of QsMYB1 in several Q. suber organs showed very low expression in young branches and roots, whereas in leaves, immature acorns or male flowers, no expression was detected. These preliminary results suggest that QsMYB1 may be related to secondary growth and, in particular, with the cork biosynthesis process with a possible alternative splicing mechanism associated with its regulatory function.
File Format	HTM / HTML
ISSN	01761617
Issue Number	2
Volume Number	170
e-ISSN	16181328
Journal	Journal of Plant Physiology
Language	English
Publisher	Elsevier
Publisher Date	2013-01-15
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Botany Plant Bark Genetics Metabolism Plant Proteins Chemistry Quercus Transcription Factors Alternative Splicing Amino Acid Sequence Gene Expression Regulation, Plant Genes, Plant Lipids Biosynthesis Molecular Sequence Data Plant Growth Regulators Rna, Plant Up-regulation Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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QsMYB1 expression is modulated in response to heat and drought stresses and during plant recovery in Quercus suber.

Cork oak (Quercus suber)

ChIP-Seq reveals that QsMYB1 directly targets genes involved in lignin and suberin biosynthesis pathways in cork oak (Quercus suber)

Characterization of the cork oak transcriptome dynamics during acorn development

Dehydrin genes and their expression in recalcitrant oak (Quercus robur) embryos.

Cork-Containing Barks—A Review

MiRNA profiling in leaf and cork tissues of Quercus suber reveals novel miRNAs and tissue-specific expression patterns

Molecular and biochemical characterization of a cyanogenic ß-glucosidase in the inner bark tissues of rubber tree (Hevea brasiliensis Muell. Arg.).

An anther-specific gene encoded by an S locus haplotype of Brassica produces complementary and differentially regulated transcripts.

Molecular characterization of Quercus suber MYB1, a transcription factor up-regulated in cork tissues.

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Molecular characterization of Quercus suber MYB1, a transcription factor up-regulated in cork tissues.