Journal Article

Boron Nutrition of Cultured Tobacco BY-2 Cells. VI. Calcium is Involved in Early Responses to Boron Deprivation

Taichi Koshiba, Masaru Kobayashi, Atsushi Ishihara and Toru Matoh

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 51, issue 2, pages 323-327
Published in print February 2010 | ISSN: 0032-0781
Published online December 2009 | e-ISSN: 1471-9053 | DOI: https://dx.doi.org/10.1093/pcp/pcp179
Boron Nutrition of Cultured Tobacco BY-2 Cells. VI. Calcium is Involved in Early Responses to Boron Deprivation

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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Boron (B) deprivation induces various responses in plant cells, some of which can be observed very early. However, it has been unknown what kind of signal is generated by the stress. We found that B deprivation induced the expression of stress-responsive genes within 1 h in suspension-cultured tobacco BY-2 cells. The induction was largely suppressed by withholding medium Ca2+ or by adding a Ca2+ channel blocker. Analysis using aequorin-expressing cells showed that B-deprived cells took up more Ca2+ than control cells. These results suggest that Ca2+ influx plays a role in B deprivation stress signaling.

Keywords: Boron deficiency; Calcium influx; Pectic polysaccharides; Stress signaling; Tobacco

Journal Article.  2684 words.  Illustrated.

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

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