Academic Journal
Circadian regulation of the transcriptome in a complex polyploid crop
| Title: | Circadian regulation of the transcriptome in a complex polyploid crop |
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| Authors: | Hannah Rees, Rachel Rusholme-Pilcher, Paul Bailey, Joshua Colmer, Benjamen White, Connor Reynolds, Sabrina Jaye Ward, Benedict Coombes, Calum A. Graham, Luíza Lane de Barros Dantas, Antony N. Dodd, Anthony Hall |
| Source: | PLoS Biology, Vol 20, Iss 10 (2022) |
| Publisher Information: | Public Library of Science (PLoS), 2022. |
| Publication Year: | 2022 |
| Collection: | LCC:Biology (General) |
| Subject Terms: | Biology (General), QH301-705.5 |
| More Details: | The circadian clock is a finely balanced timekeeping mechanism that coordinates programmes of gene expression. It is currently unknown how the clock regulates expression of homoeologous genes in polyploids. Here, we generate a high-resolution time-course dataset to investigate the circadian balance between sets of 3 homoeologous genes (triads) from hexaploid bread wheat. We find a large proportion of circadian triads exhibit imbalanced rhythmic expression patterns, with no specific subgenome favoured. In wheat, period lengths of rhythmic transcripts are found to be longer and have a higher level of variance than in other plant species. Expression of transcripts associated with circadian controlled biological processes is largely conserved between wheat and Arabidopsis; however, striking differences are seen in agriculturally critical processes such as starch metabolism. Together, this work highlights the ongoing selection for balance versus diversification in circadian homoeologs and identifies clock-controlled pathways that might provide important targets for future wheat breeding. This study presents a high-resolution circadian transcriptomic time-course dataset in wheat, revealing novel insights into the balance of circadian expression in a complex polyploid crop. Over 20% of genes in wheat are circadian regulated and a large proportion of triads exhibit unbalanced rhythmicity patterns. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1544-9173 1545-7885 |
| Relation: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9560141/?tool=EBI; https://doaj.org/toc/1544-9173; https://doaj.org/toc/1545-7885 |
| Access URL: | https://doaj.org/article/ded31548582c4dbd81f2fa4ccef9d1f9 |
| Accession Number: | edsdoj.31548582c4dbd81f2fa4ccef9d1f9 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 15449173 15457885 |
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| Published in: | PLoS Biology |
| Language: | English |