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Título

Evaluation of candidate reference genes for expression studies in Pisum sativum under different experimental conditions

Autor Die, José V. ; Román, Belén; Nadal, Salvador; González-Verdejo, Clara Isabel
Palabras clave Normalization
Pea
Quantitative PCR
Reference genes
Stable expression
Fecha de publicación jun-2010
EditorSpringer
Citación Planta 232(1): 145-153 (2010)
ResumenReverse transcription quantitative real-time polymerase chain reaction is the most accurate measure of gene expression in biological systems. The data are analyzed through a process called normalization. Internal standards are essential for determining the relative gene expression in different samples. For this purpose, reference genes are selected based on their constitutive expression across samples. At present, there has not yet been any reference gene identified in any organism that is universally optimal across different tissue types or disease situations. Our goal was to test the regulation of 11 potential references for pea. These included eight commonly used and three new candidates. Twenty-six samples, including different tissues, treatments and genotypes, were addressed in this analysis. For reliable data normalization, the most suitable combination of reference genes in each experimental set was constructed with at least two out the five more stably expressed references in the whole experimental series (i.e. protein phosphatase 2A, β-tubulin, GH720838, actin and GH720808). To validate the determined measure of gene-stability, the gene-specific variation was calculated using different normalization factors. The most non-specific variation was removed when the most stable genes were used, highlighting the importance of the adequate choice of internal controls in gene expression experiments. The set of reference genes presented here will provide useful guidelines as starting point for reference gene selection in pea studies under conditions other than those tested here. © 2010 Springer-Verlag.
URI http://hdl.handle.net/10261/87808
DOI10.1007/s00425-010-1158-1
Identificadoresdoi: 10.1007/s00425-010-1158-1
issn: 0032-0935
e-issn: 1432-2048
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