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Plant circadian clock control of Medicago truncatula nodulation via regulation of Nodule Cysteine-Rich peptides
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Achom, Mingkee, Roy, Proyash, Lagunas, Beatriz, Picot, Emma, Richards, L., Bonyadi-Pour, Roxanna, Pardal , Alonso Javier, Baxter, Laura, Richmond, Bethany L., Aschauer, N., Fletcher, E., Rowson, M., Blackwell, J., Rich-Griffin, C., Mysore, K. S., Wen, J., Ott, Sascha, Carré, Isabelle A. and Gifford, Miriam L. (2022) Plant circadian clock control of Medicago truncatula nodulation via regulation of Nodule Cysteine-Rich peptides. Journal of Experimental Botany, 73 (5). pp. 2142-2156. doi:10.1093/jxb/erab526
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WRAP-plant-circadian-clock-control-Medicago-truncatula-nodulation-via-regulation-Nodule-Cysteine-Rich-peptides-Gifford-2021.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1390Kb) | Preview |
Official URL: http://dx.doi.org/10.1093/jxb/erab526
Abstract
Legumes house nitrogen-fixing endosymbiotic rhizobia in specialized polyploid cells within root nodules, which undergo tightly regulated metabolic activity. By carrying out expression analysis of transcripts over time in Medicago truncatula nodules we found that the circadian clock enables coordinated control of metabolic and regulatory processes linked to nitrogen fixation. This involves the circadian clock-associated transcriptional factor LATE ELONGATED HYPOCOTYL (LHY), with lhy mutants being affected in nodulation. Rhythmic transcripts in root nodules include a subset of Nodule-specific Cysteine Rich peptides (NCRs) that have the LHY-bound conserved Evening Element in their promoters. Until now, studies have suggested that NCRs act to regulate bacteroid differentiation and keep the rhizobial population in check. However, these conclusions came from the study of a few members of this very large gene family that has complex diversified spatio-temporal expression. We suggest that rhythmic expression of NCRs may be important for temporal coordination of bacterial activity with the rhythms of the plant host, in order to ensure optimal symbiosis.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QK Botany | |||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Legumes, Circadian rhythms, Legumes -- Mediterranean Region, Legumes -- Research -- Mediterranean Region, Plants -- Development, Nitrogen -- Fixation, Nitrogen-fixing plants | |||||||||||||||
| Journal or Publication Title: | Journal of Experimental Botany | |||||||||||||||
| Publisher: | OUP | |||||||||||||||
| ISSN: | 0022-0957 | |||||||||||||||
| Official Date: | 5 April 2022 | |||||||||||||||
| Dates: |
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| Volume: | 73 | |||||||||||||||
| Number: | 5 | |||||||||||||||
| Page Range: | pp. 2142-2156 | |||||||||||||||
| DOI: | 10.1093/jxb/erab526 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access | |||||||||||||||
| RIOXX Funder/Project Grant: |
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