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- W2754141145 endingPage "2857" @default.
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- W2754141145 abstract "Plants can acquire freezing tolerance in response to cold but non-freezing temperatures. To efficiently activate this cold acclimation, low temperature has to be sensed and processed swiftly, a process that is linked with a transient elimination of microtubules. Here, we address cold-induced microtubules elimination in a grapevine cell line stably expressing a green fluorescent protein fusion of Arabidopsis TuB6, which allows to follow their response in vivo and to quantify this response by quantitative image analysis. We use time-course studies with several specific pharmacological inhibitors and activators to dissect the signalling events acting upstream of microtubules elimination. We find that microtubules disappear within 30 min after the onset of cold stress. We provide evidence for roles of calcium influx, membrane rigidification, and activation of NAD(P)H oxidase as factors in signal susception and amplification. We further conclude that a G-protein in concert with a phospholipase D convey the signal towards microtubules, whereas calmodulin seems to be not involved. Moreover, activation of jasmonate pathway in response to cold is required for an efficient microtubule response. We summarize our findings in a working model on a complex signalling hub at the membrane-cytoskeleton interphase that assembles the susception, perception and early transduction of cold signals." @default.
- W2754141145 created "2017-09-25" @default.
- W2754141145 creator A5009268385 @default.
- W2754141145 creator A5050970188 @default.
- W2754141145 date "2017-09-27" @default.
- W2754141145 modified "2023-10-18" @default.
- W2754141145 title "Cold sensing in grapevine-Which signals are upstream of the microtubular “thermometer”" @default.
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- W2754141145 doi "https://doi.org/10.1111/pce.13066" @default.
- W2754141145 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28898434" @default.
- W2754141145 hasPublicationYear "2017" @default.
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