Plant Cell, Tissue and Organ Culture

, Volume 64, Issue 2, pp 145–157

Oxidative stress and physiological, epigenetic and genetic variability in plant tissue culture: implications for micropropagators and genetic engineers

  • Alan C. Cassells
  • Rosario F. Curry

DOI: 10.1023/A:1010692104861

Cite this article as:
Cassells, A.C. & Curry, R.F. Plant Cell, Tissue and Organ Culture (2001) 64: 145. doi:10.1023/A:1010692104861


A number of well defined problems in physiological, epigenetic and genetic quality are associated with the culture of plant cell, tissue and organs in vitro, namely, absence or loss of organogenic potential (recalcitrance), hyperhydricity (`vitrification') and somaclonal variation. These broad terms are used to describe complex phenomena that are known to be genotype and environment dependent. These phenomena affect the practical application of plant tissue culture in plant propagation and in plant genetic manipulation. Here it is hypothesised much of the variability expressed in microplants may be the consequence of, or related to, oxidative stress damage caused to the plant tissues during explant preparation, and in culture, due to media and environmental factors. The characteristics of these phenomena are described and causes discussed in terms of the known effects of oxidative stress on eukaryote genomes. Parameters to characterise the phenomena are described and methods to remediate the causes proposed.

DNA repairfree radicalsgenetic engineeringhyperhydricityin vitro culturejuvenilitymicropropagationmutationreactive oxygen speciessomaclonal variationtissue culture

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Alan C. Cassells
    • 1
  • Rosario F. Curry
    • 1
  1. 1.Department of Plant ScienceNational University of IrelandCorkIreland