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Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
Published on: July 29, 2019
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Unveiling the complexity of the maize transcriptome by single-molecule long-read sequencing.
Bo Wang1, Elizabeth Tseng2, Michael Regulski1
1Cold Spring Harbor Laboratory, One Bungtown Road, Cold Spring Harbor, New York 11724, USA.
Nature Communications
|June 25, 2016
Summary
This study reveals the maize transcriptome is more complex than previously understood, identifying numerous novel gene isoforms and long non-coding RNAs using single-molecule sequencing. These findings advance our understanding of maize gene expression and transcriptional networks.
Area of Science:
- Plant molecular biology
- Genomics
- Transcriptomics
Background:
- Zea mays (maize) is a key genetic model organism.
- Incomplete knowledge of mRNA transcript structures hinders maize research.
Purpose of the Study:
- To comprehensively characterize the maize B73 transcriptome.
- To identify novel transcripts, isoforms, and gene loci.
- To improve existing maize gene models.
Main Methods:
- Utilized single-molecule sequencing technology.
- Analyzed transcriptomes from six distinct maize tissues.
- Integrated short-read data to validate splice junctions.
Main Results:
- Generated 111,151 transcripts, covering approximately 70% of annotated maize genes.
- Discovered 57% novel transcript isoforms and 3% novel gene loci.
- Identified numerous long non-coding RNAs and fusion transcripts.
- Observed DNA methylation's role in generating transcript isoforms.
Conclusions:
- The maize B73 transcriptome is significantly more complex than previously characterized.
- Current gene models require substantial revision and expansion.
- This work provides a foundation for deeper understanding of maize gene regulation.
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