Caspase inhibitors affect the kinetics and dimensions of tracheary elements in xylogenic Zinnia (<Emphasis Type="Italic">Zinnia elegans</Emphasis>) cell cultures |
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| Authors: | Peter Twumasi Elena T Iakimova Tian Qian Wim van Ieperen Jan HN Schel Anne MieC Emons Olaf van Kooten Ernst J Woltering |
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| Institution: | (1) Wageningen University, Plant Sciences Group, Horticultural Supply Chains, P.O. Box 630, 6700 AP Wageningen, The Netherlands;(2) Wageningen University, Food and Biobased Research, PO Box 17, 6700 AA Wageningen, The Netherlands;(3) Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana;(4) Institute of Ornamental Plants, 1222 Negovan Sofia, Bulgaria;(5) Laboratory of Plant Cell Biology, Wageningen University, P.O. Box 633, 6700 AP Wageningen, The Netherlands |
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| Abstract: | Background The xylem vascular system is composed of fused dead, hollow cells called tracheary elements (TEs) that originate through trans-differentiation
of root and shoot cambium cells. TEs undergo autolysis as they differentiate and mature. The final stage of the formation
of TEs in plants is the death of the involved cells, a process showing some similarities to programmed cell death (PCD) in
animal systems. Plant proteases with functional similarity to proteases involved in mammalian apoptotic cell death (caspases)
are suggested as an integral part of the core mechanism of most PCD responses in plants, but participation of plant caspase-like
proteases in TE PCD has not yet been documented. |
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