ArticleMolecules and cells2012
Characterization of cell death induced by NbBPS1 silencing in Nicotiana benthamiana.
Article in Molecules and cells, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 5 citations in OpenAlex.
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- Physiological Functions of the COPI Complex in Higher Plants.Molecules and cells · 2015Article
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3 authors at 1 institution in 1 country.
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Abstract
We previously showed that silencing of NbBPS1 encoding an endoplasmic reticulum (ER)-localized protein results in pleiotrophic developmental defects and cell death in Nicotiana benthamiana [Kang et al. (2008)]. In this study, we investigated the mechanism of the cell death caused by NbBPS1 silencing. Affected leaf cells exhibited morphological markers of programmed cell death (PCD) and accumulated excessive amounts of reactive oxygen species. NbBPS1 silencing caused dramatic induction of the ER stress marker genes BiP-like protein (BLP) genes, HSP70, and Bax Inhibitor-1. Furthermore, NbBPS1 deficiency led to relocalization of bZIP28 transcription factor from the ER membrane to the nucleus, similar to the bZIP28 relocalization during tunicamycin-induced ER stress. Abnormal accumulation of vesicles and increased autophagy activity were also observed in the affected leaf cells. These results suggest that inactivation of NbBPS1 function in the ER leads to ER stress, autophagy, and PCD activation in N. benthamiana.
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