A rice tubulin tyrosine ligase like 12 regulates phospholipase D activity and tubulin synthesis
Copyright © 2021 Elsevier B.V. All rights reserved.
| Publié dans: | Plant science : an international journal of experimental plant biology. - 1985. - 316(2022) vom: 01. März, Seite 111155 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2022
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| Accès à la collection: | Plant science : an international journal of experimental plant biology |
| Sujets: | Journal Article Detyrosination Microtubule Phospholipase D Tubulin tyrosine carboxypeptidase Tubulin tyrosine ligase like 12 Tyrosination Tubulin Tyrosine 42HK56048U |
| Résumé: | Copyright © 2021 Elsevier B.V. All rights reserved. All plant α-tubulins encode a C-terminal tyrosine. An elusive tubulin tyrosine carboxypeptidase can cleave off, and a tubulin tyrosine ligase (TTL) re-ligate this tyrosine. The biological function of this cycle remains unclear but may correlate with microtubule stability. To get insight into the functional context of this phenomenon, we used cold-induced elimination of microtubules as experimental model. In previous work, we had analysed a rice TTL-like 12 (OsTTLL12), the only potential candidate of plant TTL. To follow the effect of OsTTLL12 upon microtubule responses in vivo, we expressed OsTTLL12-RFP into tobacco BY-2 cells stably overexpressing NtTUA3-GFP. We found that overexpression of OsTTLL12-RFP made microtubules disappear faster in response to cold stress, accompanied with more rapid Ca2+ influx, culminating in reduced cold tolerance. Treatment with different butanols indicated that α-tubulin detyrosination/tyrosination differently interacts with phospholipase D (PLD) dependent signalling. In fact, rice PLDα1 decorated microtubules and increased detyrosinated α-tubulin. Unexpectedly, overexpression of the two proteins (OsTTLL12-RFP, NtTUA3-GFP) mutually regulated the accumulation of their transcripts, leading us to a model, where tubulin detyrosination feeds back upon tubulin transcripts and defines a subset of microtubules for interaction with PLD dependent stress signalling |
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| Description: | Date Completed 15.02.2022 Date Revised 15.02.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1873-2259 |
| DOI: | 10.1016/j.plantsci.2021.111155 |