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Upstream of gene expression - what is the role of microtubules in cold signalling?

Lixin Wang,Ehsan Sadeghnezhad,P. Nick

Published 2019 in Journal of Experimental Botany

ABSTRACT

Cold stress is a major abiotic stress, restricting plant growth and development. Therefore, the gene expression in response to cold stress and during cold acclimation has been studied intensively, including the ICE-CBF-COR pathway, as well as the modulation of this cascade by secondary messengers, for instance MAPK cascades. In contrast, the early events of cold perception and cold adaption have obtained far less attention. This is partially due to the fact that cold is a physical signal, which requires the conceptual framework to be adjusted. In this review, we address the role of microtubules in cold sensing, and propose a model, whereby microtubules, while not being part of signalling itself, act as modulators of cold sensitivity. The purpose of this model is to derive implications for future experiments that will help to get a more complete understanding of cold adaptation.

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