A regulatory module mediating temperature control of cell-cell communication facilitates tree bud dormancy release. Pandey, S. K, Maurya, J. P., Aryal, B., Drynda, K., Nair, A., Miskolczi, P., Singh, R. K., Wang, X., Ma, Y., de Souza Moraes, T., Bayer, E. M, Farcot, E., Bassel, G. W, Band, L. R, & Bhalerao, R. P The EMBO Journal, 43(23):5793–5812, December, 2024. Num Pages: 5812 Publisher: John Wiley & Sons, Ltd![A regulatory module mediating temperature control of cell-cell communication facilitates tree bud dormancy release [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The control of cell–cell communication via plasmodesmata (PD) plays a key role in plant development. In tree buds, low-temperature conditions (LT) induce a switch in plasmodesmata from a closed to an open state, which restores cell-to-cell communication in the shoot apex and releases dormancy. Using genetic and cell-biological approaches, we have identified a previously uncharacterized transcription factor, Low-temperature-Induced MADS-box 1 (LIM1), as an LT-induced, direct upstream activator of the gibberellic acid (GA) pathway. The LIM1-GA module mediates low temperature-induced plasmodesmata opening, by negatively regulating callose accumulation to promote dormancy release. LIM1 also activates expression of FT1 (FLOWERING LOCUS T), another LT-induced factor, with LIM1-FT1 forming a coherent feedforward loop converging on low-temperature regulation of gibberellin signaling in dormancy release. Mathematical modeling and experimental validation suggest that negative feedback regulation of LIM1 by gibberellin could play a crucial role in maintaining the robust temporal regulation of bud responses to low temperature. These results reveal genetic factors linking temperature control of cell–cell communication with regulation of seasonally-aligned growth crucial for adaptation of trees.
@article{pandey_regulatory_2024,
title = {A regulatory module mediating temperature control of cell-cell communication facilitates tree bud dormancy release},
volume = {43},
issn = {0261-4189},
url = {https://www.embopress.org/doi/full/10.1038/s44318-024-00256-5},
doi = {10.1038/s44318-024-00256-5},
abstract = {The control of cell–cell communication via plasmodesmata (PD) plays a key role in plant development. In tree buds, low-temperature conditions (LT) induce a switch in plasmodesmata from a closed to an open state, which restores cell-to-cell communication in the shoot apex and releases dormancy. Using genetic and cell-biological approaches, we have identified a previously uncharacterized transcription factor, Low-temperature-Induced MADS-box 1 (LIM1), as an LT-induced, direct upstream activator of the gibberellic acid (GA) pathway. The LIM1-GA module mediates low temperature-induced plasmodesmata opening, by negatively regulating callose accumulation to promote dormancy release. LIM1 also activates expression of FT1 (FLOWERING LOCUS T), another LT-induced factor, with LIM1-FT1 forming a coherent feedforward loop converging on low-temperature regulation of gibberellin signaling in dormancy release. Mathematical modeling and experimental validation suggest that negative feedback regulation of LIM1 by gibberellin could play a crucial role in maintaining the robust temporal regulation of bud responses to low temperature. These results reveal genetic factors linking temperature control of cell–cell communication with regulation of seasonally-aligned growth crucial for adaptation of trees.},
number = {23},
urldate = {2024-12-06},
journal = {The EMBO Journal},
author = {Pandey, Shashank K and Maurya, Jay Prakash and Aryal, Bibek and Drynda, Kamil and Nair, Aswin and Miskolczi, Pal and Singh, Rajesh Kumar and Wang, Xiaobin and Ma, Yujiao and de Souza Moraes, Tatiana and Bayer, Emmanuelle M and Farcot, Etienne and Bassel, George W and Band, Leah R and Bhalerao, Rishikesh P},
month = dec,
year = {2024},
note = {Num Pages: 5812
Publisher: John Wiley \& Sons, Ltd},
keywords = {Callose, Dormancy, Gibberellins, Plasmodesmata, Temperature},
pages = {5793--5812},
}
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In tree buds, low-temperature conditions (LT) induce a switch in plasmodesmata from a closed to an open state, which restores cell-to-cell communication in the shoot apex and releases dormancy. Using genetic and cell-biological approaches, we have identified a previously uncharacterized transcription factor, Low-temperature-Induced MADS-box 1 (LIM1), as an LT-induced, direct upstream activator of the gibberellic acid (GA) pathway. The LIM1-GA module mediates low temperature-induced plasmodesmata opening, by negatively regulating callose accumulation to promote dormancy release. LIM1 also activates expression of FT1 (FLOWERING LOCUS T), another LT-induced factor, with LIM1-FT1 forming a coherent feedforward loop converging on low-temperature regulation of gibberellin signaling in dormancy release. Mathematical modeling and experimental validation suggest that negative feedback regulation of LIM1 by gibberellin could play a crucial role in maintaining the robust temporal regulation of bud responses to low temperature. 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