The Arabidopsis thaliana AT PRP39-1 gene, encoding a tetratricopeptide repeat protein with similarity to the yeast pre-mRNA processing protein PRP39, affects flowering time
| Autor: | Qing Tian, Cunxi Wang, Mark Mucha, Milo Aukerman, Zhenglin Hou, Odd-Arne Olsen |
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| Rok vydání: | 2006 |
| Předmět: |
Saccharomyces cerevisiae Proteins
Time Factors Photoperiod Arabidopsis Context (language use) Plant Science Flowers Genes Plant Ribonucleoprotein U1 Small Nuclear Gene Expression Regulation Plant Arabidopsis thaliana RNA Messenger Gene Genetics Messenger RNA biology Arabidopsis Proteins Homozygote food and beverages General Medicine Vernalization biology.organism_classification Gibberellins Tetratricopeptide Gibberellin Agronomy and Crop Science |
| Zdroj: | Plant cell reports. 26(8) |
| ISSN: | 0721-7714 |
| Popis: | Flowering is regulated by a network integrated from four major pathways, including the photoperiod, vernalization, gibberellin, and autonomous pathways. RNA processing within the autonomous pathway is well known to regulate Arabidopsis thaliana flowering time. Here we identify a novel Arabidopsis gene, designated AT PRP39-1, that affects flowering time. Based on observations that homozygous at prp39-1 plants are late flowering under both long and short days and responsive to GA and vernalization treatment, we tentatively conclude that AT PRP39-1 may represent a new component of the autonomous pathway. Consistent with previous studies on genes of the autonomous pathway, knockout of AT PRP39-1 in Arabidopsis displays an upregulation of the steady state level of FLC, and simultaneous downregulation of FT and SOC1 transcript levels in adult tissues. AT PRP39-1 encodes a tetratricopeptide repeat protein with a similarity to a yeast mRNA processing protein Prp39p, suggesting that the involvement of these tetratricopeptide repeat proteins in RNA processing is conserved among yeast, human, and plants. Structure modeling suggests that AT PRP39-1 has two TPR superhelical domains suitable for target protein binding. We discuss how AT PRP39-1 may function in the control of flowering in the context of the autonomous pathway. |
| Databáze: | OpenAIRE |
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