Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis
The selection and validation of reference genes constitute a key point for gene expression analysis based on qPCR, requiring efficient normalization approaches. In this work, the expression profiles of eight genes were evaluated to identify novel reference genes for transcriptional studies associate...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07217714_v30_n1_p63_Fernandez http://hdl.handle.net/20.500.12110/paper_07217714_v30_n1_p63_Fernandez |
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paper:paper_07217714_v30_n1_p63_Fernandez2023-06-08T15:43:22Z Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis Fernández, Paula Virginia Hopp, Horacio Esteban Heinz, Ruth Amelia qPCR Reference genes Senescence Sunflower complementary DNA elongation factor 1 messenger RNA tubulin algorithm article comparative study computer program gene expression regulation genetic transcription genetics growth, development and aging metabolism methodology plant gene plant leaf reproducibility reverse transcription polymerase chain reaction standard sunflower Algorithms DNA, Complementary Gene Expression Regulation, Plant Genes, Plant Helianthus Peptide Elongation Factor 1 Plant Leaves Reference Standards Reproducibility of Results Reverse Transcriptase Polymerase Chain Reaction RNA, Messenger Software Transcription, Genetic Tubulin Helianthus The selection and validation of reference genes constitute a key point for gene expression analysis based on qPCR, requiring efficient normalization approaches. In this work, the expression profiles of eight genes were evaluated to identify novel reference genes for transcriptional studies associated to the senescence process in sunflower. Three alternative strategies were applied for the evaluation of gene expression stability in leaves of different ages and exposed to different treatments affecting the senescence process: algorithms implemented in geNorm, BestKeeper software, and the fitting of a statistical linear mixed model (LMModel). The results show that geNorm suggested the use of all combined genes, although identifying α-TUB1 as the most stable expressing gene. BestKeeper revealed α-TUB and β-TUB as stable genes, scoring β-TUB as the most stable one. The statistical LMModel identified α-TUB, actin, PEP, and EF-1α as stable genes in this order. The model-based approximation allows not only the estimation of systematic changes in gene expression, but also the identification of sources of random variation through the estimation of variance components, considering the experimental design applied. Validation of α-TUB and EF-1α as reference genes for expression studies of three sunflower senescence associated genes showed that the first one was more stable for the assayed conditions. We conclude that, when biological replicates are available, LMModel allows a more reliable selection under the assayed conditions. This study represents the first analysis of identification and validation of genuine reference genes for use as internal control in qPCR expression studies in sunflower, experimentally validated throughout six different controlled leaf senescence conditions. © 2010 Springer-Verlag. Fil:Fernandez, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hopp, H.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Heinz, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07217714_v30_n1_p63_Fernandez http://hdl.handle.net/20.500.12110/paper_07217714_v30_n1_p63_Fernandez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
qPCR Reference genes Senescence Sunflower complementary DNA elongation factor 1 messenger RNA tubulin algorithm article comparative study computer program gene expression regulation genetic transcription genetics growth, development and aging metabolism methodology plant gene plant leaf reproducibility reverse transcription polymerase chain reaction standard sunflower Algorithms DNA, Complementary Gene Expression Regulation, Plant Genes, Plant Helianthus Peptide Elongation Factor 1 Plant Leaves Reference Standards Reproducibility of Results Reverse Transcriptase Polymerase Chain Reaction RNA, Messenger Software Transcription, Genetic Tubulin Helianthus |
| spellingShingle |
qPCR Reference genes Senescence Sunflower complementary DNA elongation factor 1 messenger RNA tubulin algorithm article comparative study computer program gene expression regulation genetic transcription genetics growth, development and aging metabolism methodology plant gene plant leaf reproducibility reverse transcription polymerase chain reaction standard sunflower Algorithms DNA, Complementary Gene Expression Regulation, Plant Genes, Plant Helianthus Peptide Elongation Factor 1 Plant Leaves Reference Standards Reproducibility of Results Reverse Transcriptase Polymerase Chain Reaction RNA, Messenger Software Transcription, Genetic Tubulin Helianthus Fernández, Paula Virginia Hopp, Horacio Esteban Heinz, Ruth Amelia Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| topic_facet |
qPCR Reference genes Senescence Sunflower complementary DNA elongation factor 1 messenger RNA tubulin algorithm article comparative study computer program gene expression regulation genetic transcription genetics growth, development and aging metabolism methodology plant gene plant leaf reproducibility reverse transcription polymerase chain reaction standard sunflower Algorithms DNA, Complementary Gene Expression Regulation, Plant Genes, Plant Helianthus Peptide Elongation Factor 1 Plant Leaves Reference Standards Reproducibility of Results Reverse Transcriptase Polymerase Chain Reaction RNA, Messenger Software Transcription, Genetic Tubulin Helianthus |
| description |
The selection and validation of reference genes constitute a key point for gene expression analysis based on qPCR, requiring efficient normalization approaches. In this work, the expression profiles of eight genes were evaluated to identify novel reference genes for transcriptional studies associated to the senescence process in sunflower. Three alternative strategies were applied for the evaluation of gene expression stability in leaves of different ages and exposed to different treatments affecting the senescence process: algorithms implemented in geNorm, BestKeeper software, and the fitting of a statistical linear mixed model (LMModel). The results show that geNorm suggested the use of all combined genes, although identifying α-TUB1 as the most stable expressing gene. BestKeeper revealed α-TUB and β-TUB as stable genes, scoring β-TUB as the most stable one. The statistical LMModel identified α-TUB, actin, PEP, and EF-1α as stable genes in this order. The model-based approximation allows not only the estimation of systematic changes in gene expression, but also the identification of sources of random variation through the estimation of variance components, considering the experimental design applied. Validation of α-TUB and EF-1α as reference genes for expression studies of three sunflower senescence associated genes showed that the first one was more stable for the assayed conditions. We conclude that, when biological replicates are available, LMModel allows a more reliable selection under the assayed conditions. This study represents the first analysis of identification and validation of genuine reference genes for use as internal control in qPCR expression studies in sunflower, experimentally validated throughout six different controlled leaf senescence conditions. © 2010 Springer-Verlag. |
| author |
Fernández, Paula Virginia Hopp, Horacio Esteban Heinz, Ruth Amelia |
| author_facet |
Fernández, Paula Virginia Hopp, Horacio Esteban Heinz, Ruth Amelia |
| author_sort |
Fernández, Paula Virginia |
| title |
Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| title_short |
Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| title_full |
Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| title_fullStr |
Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| title_full_unstemmed |
Comparison of predictive methods and biological validation for qPCR reference genes in sunflower leaf senescence transcript analysis |
| title_sort |
comparison of predictive methods and biological validation for qpcr reference genes in sunflower leaf senescence transcript analysis |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07217714_v30_n1_p63_Fernandez http://hdl.handle.net/20.500.12110/paper_07217714_v30_n1_p63_Fernandez |
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AT fernandezpaulavirginia comparisonofpredictivemethodsandbiologicalvalidationforqpcrreferencegenesinsunflowerleafsenescencetranscriptanalysis AT hopphoracioesteban comparisonofpredictivemethodsandbiologicalvalidationforqpcrreferencegenesinsunflowerleafsenescencetranscriptanalysis AT heinzruthamelia comparisonofpredictivemethodsandbiologicalvalidationforqpcrreferencegenesinsunflowerleafsenescencetranscriptanalysis |
| _version_ |
1768542508831211520 |