AtCopeg1, the unique gene originated from AtCopia95 retrotransposon family, is sensitive to external hormones and abiotic stresses
| Autor: | Qiong Zhang, Xiangzhen Ding, Jianhua Huang, Ke Duan, Hong Zhu, Ai-Hu Pan |
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| Rok vydání: | 2008 |
| Předmět: |
Transposable element
Retroelements Molecular Sequence Data Arabidopsis Retrotransposon Plant Science Genes Plant Phosphates Evolution Molecular Plant Growth Regulators Gene Expression Regulation Plant Promoter Regions Genetic Gene Expressed Sequence Tags Regulation of gene expression Genetics Expressed sequence tag Base Sequence biology Arabidopsis Proteins Reverse Transcriptase Polymerase Chain Reaction Sequence Analysis DNA General Medicine biology.organism_classification Noncoding DNA Introns Long terminal repeat Agronomy and Crop Science |
| Zdroj: | Plant Cell Reports. 27:1065-1073 |
| ISSN: | 1432-203X 0721-7714 |
| DOI: | 10.1007/s00299-008-0520-2 |
| Popis: | Retrotransposons, the important component of eukaryotic genome, are seeds of evolution and play great role in creating new genes. The compact Arabidopsis genome harbors over 200 Copia-like retrotransposons, but mostly silent. Here we isolated an expressed gene AtCopeg1 (Copia evolved gene 1), which shows higher than 90% identity to AtCopia95_I, the consensus sequence encoding AtCopia95 polyprotein. AtCopeg1 is the unique gene evolved from AtCopia95 family. It is an intron-containing gene with two alternative 3' ends. The transcript accumulation of AtCopeg1 is tissue-specific, also significantly affected by external hormones and abiotic stresses. The presence of regulatory elements in its promoter region (originating from AtCopia95_I and AtCopia95 long terminal repeat), is adequate for conferring its essential expression feature. Thus, AtCopeg1 is a versatile functional gene involved in many developmental and adaptive processes probably including the signaling crosstalk of hormone and nutrient stress. Our work highlighted the role of transposable elements in creating new functional genes, and will incite the enthusiasm for isolation and functional characterization of plant genes evolved from those previously considered as selfish and junk DNA. |
| Databáze: | OpenAIRE |
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