J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (4): -.

• Research Articles •    

Cytochrome c Can Induce Programmed Cell Death in Plant Cells

SUN Ying-Li, ZHAO Yun, LIU Chun-Xiang and ZHAI Zhong-He   

Abstract: The study revealed the detection of stereotypic hallmarks of the apeptosis during cell death induced by cytochrome c in carrot ( Daucus carota L. ) and tobacco ( Nicotiana tabacum L. ) protoplasts. The progressive delineation of fragmented DNA into distinct bodies, coincident with the appearance of DNA ladders, was also observed during death of the cytochrome c-treated carrot and tobacco protoplasts. TUNEL analysis of cells revealed DNA fragmentation localized in the dying cells as well as the additional formation of apoptotic-like bodies. These results suggest that cytochrome c can induce programmed cell death (PCD) in plant cells; also indicate that PCD in plants involves some of the characteristics of animal apeptosis among which DNA cleavage is a potential indicator of PCD in plants.

Key words: Cytochrome c, Programmed cell death, Nucleus

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