Induction of apoptotic cell death leads to the development of bacterial rot caused by Pseudomonas cichorii

Molecular Plant-microbe Interactions : MPMI
Akinori KibaYasufumi Hikichi

Abstract

Pseudomonas cichorii is the major causal agent of bacterial rot of lettuce. Collapse and browning symptoms were observed in lettuce leaf tissue from 15 to 24 h after inoculation (HAI) with P. cichorii; superoxide anion generation was detected at 1 to 6 HAI; and cell death was induced at 6 HAI, reaching a maximum at approximately 9 and 12 HAI. Heterochromatin condensation and DNA laddering also were observed within 3 HAI. Pharmacological studies showed that induction of cell death and DNA laddering was closely associated with de novo protein synthesis, protein kinase, intracellular reactive oxygen species, DNase, serine protease, and caspase III-like protease. Moreover, chemicals, which inhibited the induction of cell death and DNA laddering, also suppressed the development of disease symptoms. These results suggest that apoptotic cell death might be closely associated with the development of bacterial rot caused by P. cichorii.

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Citations

Aug 15, 2008·Molecular Plant-microbe Interactions : MPMI·Caixia LiWallace A Cowling
Oct 8, 2016·Journal of Bioscience and Bioengineering·Akihide YoshiharaPushpa Kiran Gullapalli
Feb 23, 2018·Protoplasma·Elena T Iakimova, Ernst J Woltering
Jul 1, 2020·Bioscience, Biotechnology, and Biochemistry·Risa MaenakaKenji Kai

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