A rapid RNA extraction method from oil palm tissues suitable for reverse transcription quantitative real-time PCR (RT-qPCR)
2020
Badai, Siti Suriawati | Rasid, Omar Abd | Parveez, Ghulam Kadir Ahmad | Masani, Mat Yunus Abdul
Cetyltrimethylammonium bromide (CTAB) is the preferred detergent in RNA extraction of oil palm tissues. However, the CTAB-based protocol is time-consuming. In this study, a combination of the CTAB-based method and silica-based purification reduced the extraction time from two days to five hours. Quality of total RNA from 27 different tissues of oil palm was shown to have an RNA integrity number (RIN) value of more than seven. The extracted RNA was evaluated by RT-qPCR using three reference oil palm genes (GRAS, CYP2, and SLU7) and three putative mesocarp-specific transcripts annotated as WRKY DNA-binding protein 70 (WRKY-70), metallothionein (MT) and pentatricopeptide repeat (PPR) genes. Tissue-specific expression profiling across complete developmental stages of mesocarp and vegetative tissues was determined in this study. Overall, the RNA extraction protocol described here is rapid, simple and yields good quality RNAs from oil palm tissues.
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