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Autophagy and cell-death proteases in plants: two wheels of a funeral cart
Authors:Bozhkov Peter  Jansson Christer
Affiliation:Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden. peter.bozhkov@vbsg.slu.se
Abstract:Apoptosis is an evolutionarily young cell-death strategy evolved to disassemble animal cells through the action of the caspase family of proteases and phagocytic clearance. This strategy does not work in plants, which instead feature a phylogenetically older autophagic programmed cell death (PCD), as a bona fide type of cellular suicide. Recent work has begun to address the mechanistic roles for autophagic and proteolytic components, as well as their possible cooperation in plant PCD. A recent study has shown autophagosomal localization of a key cell-death proteolytic activity at the early stage of plant PCD. Here we focus on the relationship between autophagic and proteoloytic components in plant PCD at the cellular and organismal levels.
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