ArticlePlant molecular biology2009
Insights into corn genes derived from large-scale cDNA sequencing.
Article in Plant molecular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers.
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112 citing papers in PubMed, 267 citations in OpenAlex.
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- Critical assessment of computational tools for prokaryotic and eukaryotic promoter prediction.Briefings in bioinformatics · 2022Article
- Genome-Wide Prediction of Transcription Start Sites in Conifers.International journal of molecular sciences · 2022Article
- Identifying Signal-Crosstalk Mechanism in Maize Plants during Combined Salinity and Boron Stress Using Integrative Systems Biology Approaches.BioMed research international · 2022Article
- Cloning and expression analysis of mevalonate kinase and phosphomevalonate kinase genes associated with the MVA pathway in Santalum album.Scientific reports · 2021Article
- MicroRNA Zma-miR528 Versatile Regulation on Target mRNAs during Maize Somatic Embryogenesis.International journal of molecular sciences · 2021Article
- Perspective: 50 years of plant chromosome biology.Plant physiology · 2021Article
- Prediction of Rice Transcription Start Sites Using TransPrise: A Novel Machine Learning Approach.Methods in molecular biology (Clifton, N.J.) · 2021Article
- Genome-Wide Identification, Characterization and Function Analysis of Lineage-Specific Genes in the Tea PlantFrontiers in genetics · 2021Article
52 more citing papers are in PubMed but not listed here.
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We present a large portion of the transcriptome of Zea mays, including ESTs representing 484,032 cDNA clones from 53 libraries and 36,565 fully sequenced cDNA clones, out of which 31,552 clones are non-redundant. These and other previously sequenced transcripts have been aligned with available genome sequences and have provided new insights into the characteristics of gene structures and promoters within this major crop species. We found that although the average number of introns per gene is about the same in corn and Arabidopsis, corn genes have more alternatively spliced isoforms. Examination of the nucleotide composition of coding regions reveals that corn genes, as well as genes of other Poaceae (Grass family), can be divided into two classes according to the GC content at the third position in the amino acid encoding codons. Many of the transcripts that have lower GC content at the third position have dicot homologs but the high GC content transcripts tend to be more specific to the grasses. The high GC content class is also enriched with intronless genes. Together this suggests that an identifiable class of genes in plants is associated with the Poaceae divergence. Furthermore, because many of these genes appear to be derived from ancestral genes that do not contain introns, this evolutionary divergence may be the result of horizontal gene transfer from species not only with different codon usage but possibly that did not have introns, perhaps outside of the plant kingdom. By comparing the cDNAs described herein with the non-redundant set of corn mRNAs in GenBank, we estimate that there are about 50,000 different protein coding genes in Zea. All of the sequence data from this study have been submitted to DDBJ/GenBank/EMBL under accession numbers EU940701-EU977132 (FLI cDNA) and FK944382-FL482108 (EST).
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