The maize root transcriptome by serial analysis of gene expression.

1,200; 1%). Quantitative reverse transcription-PCR for selected transcripts indicated high correlation with tag frequency. Computational analysis compared this set with known maize transcripts and other root transcriptome models. Among the 14,850 tags, 7,010 (47%) were found for which no maize cDNA or gene model existed. Comparing the maize root transcriptome with that in other plants indicated that highly expressed transcripts differed substantially; less than 5% of the most abundant transcripts were shared between maize and Arabidopsis (Arabidopsis thaliana). Transcript categories highlight functions of the maize root tip. Significant variation in abundance characterizes transcripts derived from isoforms of individual enzymes in biochemical pathways. -->
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Substance Nomenclature: 0 (DNA, Plant)
0 (Enzymes)
0 (Plant Proteins)
0 (RNA, Plant)
Entry Date(s): Date Created: 20050621 Date Completed: 20051027 Latest Revision: 20181113
Update Code: 20240829
PubMed Central ID: PMC1176439
DOI: 10.1104/pp.104.057638
PMID: 15965024
Autor: Poroyko V; Department of Plant Biology , University of Illinois, Urbana, Illinois 61801, USA., Hejlek LG, Spollen WG, Springer GK, Nguyen HT, Sharp RE, Bohnert HJ
Jazyk: angličtina
Zdroj: Plant physiology [Plant Physiol] 2005 Jul; Vol. 138 (3), pp. 1700-10. Date of Electronic Publication: 2005 Jun 17.
DOI: 10.1104/pp.104.057638
Abstrakt: Serial Analysis of Gene Expression was used to define number and relative abundance of transcripts in the root tip of well-watered maize seedlings (Zea mays cv FR697). In total, 161,320 tags represented a minimum of 14,850 genes, based on at least two tags detected per transcript. The root transcriptome has been sampled to an estimated copy number of approximately five transcripts per cell. An extrapolation from the data and testing of single-tag identifiers by reverse transcription-PCR indicated that the maize root transcriptome should amount to at least 22,000 expressed genes. Frequency ranged from low copy number (2-5, 68.8%) to highly abundant transcripts (100-->1,200; 1%). Quantitative reverse transcription-PCR for selected transcripts indicated high correlation with tag frequency. Computational analysis compared this set with known maize transcripts and other root transcriptome models. Among the 14,850 tags, 7,010 (47%) were found for which no maize cDNA or gene model existed. Comparing the maize root transcriptome with that in other plants indicated that highly expressed transcripts differed substantially; less than 5% of the most abundant transcripts were shared between maize and Arabidopsis (Arabidopsis thaliana). Transcript categories highlight functions of the maize root tip. Significant variation in abundance characterizes transcripts derived from isoforms of individual enzymes in biochemical pathways.
Databáze: MEDLINE
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