Journal Article

Cold Acclimation Can Induce Microtubular Cold Stability in a Manner Distinct from Abscisic Acid

Qi Yan Wang and Peter Nick

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 42, issue 9, pages 999-1005
Published in print September 2001 | ISSN: 0032-0781
Published online September 2001 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pce135
Cold Acclimation Can Induce Microtubular Cold Stability in a Manner Distinct from Abscisic Acid

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The response of cortical microtubules to low temperature was investigated for the Chinese winter wheat (Triticum aestivum L.) cultivar Jing Nong 934. Microtubules in the cortex of the root elongation zone disassembled rapidly in response to a cold shock of –7°C and reassembled upon rewarming to 25°C. The microtubules acquired resistance against this cold shock in response to cold acclimation in chilling, but non-freezing, temperature or after a treatment with abscisic acid (ABA). Cold acclimation and ABA differed with respect to the appearance of microtubules: fine, transverse strands were observed after cold acclimation, whereas ABA produced steeply oblique microtubule bundles. The findings are discussed in terms of an ABA-independent pathway for acquired cold stability of microtubules.

Keywords: Key words: Abscisic acid — Cold acclimation — Immunofluorescence — Microtubules — Winter wheat (Triticum aestivum L.); Abbreviations: ABA, abscisic acid; EGTA, ethylene glycol bis(2-aminoethyl)-tetraacetic acid; MSB, microtubule-stabilizing buffer; PIPES, 1,4-piperazine-diethanesulfonic acid; TBS, Tris-buffered saline.

Journal Article.  4435 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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