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Real Time RT-PCR

Real Time RT-PCR

Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...

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A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica

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Reference gene selection for quantitative real-time polymerase chain reaction in Populus.

Meng Xu¹, Bo Zhang, Xiaohua Su

¹Jiangsu Key Laboratory for Poplar Germplasm Enhancement and Variety Improvement, Nanjing Forestry University, Nanjing 210037, China.

Analytical Biochemistry

|September 7, 2010

Summary

Selecting the right reference gene is crucial for accurate gene expression analysis in Populus hardwood cuttings. Elongation factor 1 alpha (EF1a) and 18S recombinant RNA (18S) are the most stable genes for quantitative real-time PCR (qRT-PCR) normalization.

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Area of Science:

Plant Molecular Biology
Biotechnology
Forestry Science

Background:

Accurate gene expression quantification is essential for understanding plant development.
Quantitative real-time polymerase chain reaction (qRT-PCR) is a widely used method for gene expression analysis.
The selection of stable reference genes is critical for reliable qRT-PCR results, especially in complex processes like adventitious rooting.

Purpose of the Study:

To identify the most stable reference genes for qRT-PCR normalization during adventitious rooting in Populus hardwood cuttings.
To evaluate the expression stability of nine candidate reference genes across different developmental stages of rooting.

Main Methods:

Selection of nine candidate reference genes.
Analysis of gene expression stability using geNorm, NormFinder, and BestKeeper algorithms.
Evaluation across various developmental stages of Populus hardwood cuttings during adventitious rooting.

Main Results:

Actin isoform B (ACT) was identified as the least stable reference gene.
Elongation factor 1 alpha (EF1a) and 18S recombinant RNA (18S) demonstrated the highest expression stability.
These genes are suitable for normalizing qRT-PCR data in this specific biological context.

Conclusions:

EF1a and 18S are recommended as optimal reference genes for qRT-PCR normalization in adventitious rooting of Populus hardwood cuttings.
The findings provide a reliable basis for future gene expression studies in Populus rooting processes.
Proper reference gene selection enhances the accuracy and reproducibility of molecular research in woody plants.