Kinetin-induced programmed death of cortex cells is mediated by ethylene and calcium ions in roots of Vicia faba ssp. minor

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• 作者：Magdalena Doniak ; Anna Byczkowska ; Andrzej Kaźmierczak
• 关键词：Aerenchyma ; Calcium ions ; Ethylene ; Ethylene triple response ; Kinetin ; Programmed cell death ; Root cortex cells
• 刊名：Plant Growth Regulation
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：78
• 期：3
• 页码：335-343
• 全文大小：1,332 KB
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• 作者单位：Magdalena Doniak (1)
  Anna Byczkowska (1)
  Andrzej Kaźmierczak (1)
  
  1. Department of Cytophysiology, Faculty of Biology and Environmental Protection, University of Łódź, Pomorska 141/143, 90-236, Łódź, Poland
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5087

文摘

Kinetin-induced programmed death of cortex cells made the roots of Vicia faba ssp. minor (faba bean) seedlings shorter and thicker since the respective cells were not as long but wider then in the untreated seedlings (control). Thus the weight of 2-cm long apical parts of the kinetin-treated roots was greater. Furthermore, apical hooks as well as aerenchyma formation in the roots were observed. The presented studies aimed at revealing the role of ethylene in kinetin-induced cell death. To this end ACC (1-aminocyclopropane-1-carboxylic acid; ethylene precursor) and calcium ion amounts were analysed. Influence of ethylene biosynthesis and reception inhibitors on viability of cells and on the amount and distribution of calcium ions was also assessed. The results of the studies showed that both calcium ions and ethylene were involved in the kinetin-induced cell death. This allowed us to discuss their crucial role in this process and to propose a general scheme of induction of aerenchyma formation pathway resulting from kinetin-induced death of cortex cells.