PMID: 19916915Nov 18, 2009Paper

Chitosan-induced programmed cell death in plants

Biochemistry. Biokhimii︠a︡
L A Vasil'evV D Samuilov

Abstract

Chitosan, CN(-), or H(2)O(2) caused the death of epidermal cells (EC) in the epidermis of pea leaves that was detected by monitoring the destruction of cell nuclei; chitosan induced chromatin condensation and marginalization followed by the destruction of EC nuclei and subsequent internucleosomal DNA fragmentation. Chitosan did not affect stoma guard cells (GC). Anaerobic conditions prevented the chitosan-induced destruction of EC nuclei. The antioxidants nitroblue tetrazolium or mannitol suppressed the effects of chitosan, H(2)O(2), or chitosan + H(2)O(2) on EC. H(2)O(2) formation in EC and GC mitochondria that was determined from 2',7'-dichlorofluorescein fluorescence was inhibited by CN(-) and the protonophoric uncoupler carbonyl cyanide m-chlorophenylhydrazone but was stimulated by these agents in GC chloroplasts. The alternative oxidase inhibitors propyl gallate and salicylhydroxamate prevented chitosan- but not CN(-)-induced destruction of EC nuclei; the plasma membrane NADPH oxidase inhibitors diphenylene iodonium and quinacrine abolished chitosan- but not CN(-)-induced destruction of EC nuclei. The mitochondrial protein synthesis inhibitor lincomycin removed the destructive effect of chitosan or H(2)O(2) on EC nuclei. T...Continue Reading

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Citations

Dec 1, 2011·Journal of Agricultural and Food Chemistry·Heng YinKai Grevsen
Apr 7, 2010·Biochemistry. Biokhimii︠a︡·V D SamuilovA V Nesov
Jul 17, 2010·Biochemistry. Biokhimii︠a︡·D B KiselevskyV D Samuilov
Nov 22, 2011·Biochemistry. Biokhimii︠a︡·L A Vasil'evV D Samuilov
May 19, 2010·Marine Drugs·Abdelbasset El HadramiFouad Daayf
Nov 20, 2014·Frontiers in Plant Science·Sophie TrouvelotMarielle Adrian
Sep 18, 2014·Environmental Science and Pollution Research International·Marcello Iriti, Elena Maria Varoni
Jan 20, 2018·Environmental Science and Pollution Research International·Amal Abdel Aziz EisaSamah Saied Arafa

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