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Programmed cell death induced by ( β ‐ d ‐galactosyl) 3 Yariv reagent in Nicotiana tabacum BY‐2 suspension‐cultured cells
Author(s) -
Chaves Inês,
Regalado Ana Paula,
Chen Ming,
Ricardo Cândido Pinto,
Showalter Allan M.
Publication year - 2002
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1034/j.1399-3054.2002.1160414.x
Subject(s) - programmed cell death , apoptosis , nicotiana tabacum , dna fragmentation , cell culture , biology , microbiology and biotechnology , protoplast , agarose gel electrophoresis , fragmentation (computing) , agarose , cell , plant cell , in vitro , dna , biochemistry , genetics , ecology , gene
Programmed cell death (PCD) is involved in plant development and pathogen defence and can be triggered in vitro by several biotic and abiotic stimuli. In this report ( β ‐ d ‐galactosyl) 3 Yariv reagent, a chemical that specifically binds to arabinogalactan‐proteins (AGPs), completely inhibited cell growth and induced PCD in tobacco BY‐2 suspension cultured cells. Analysis of DNA from these cells, by agarose gel electrophoresis, revealed a DNA ladder consisting of multimers of 140–170 bp, similar to apoptotic animal DNA internucleosomal fragmentation. Complementary morphological studies revealed additional PCD characteristics in the Yariv‐treated BY‐2 cells, including cell shrinkage and cytoplasmic condensation. These studies demonstrate the usefulness of BY‐2 cells as a model plant PCD system and confirm a link between AGPs and PCD.