Reactive oxygen species plants

Botrytis cinerea is responsible for gray mold disease in more than 200 host plants. This necrotrophic fungus displays the capacity to kill host cells through the production of toxins and reactive oxygen species and the induction of a plant-produced oxidative burst. Thanks to an arsenal of degrading enzymes, B. cinerea is then able to feed on various plant tissues (Choquer and others 2007). 

The commercial availability of certain toxin standards has allowed researchers to examine the physiological mechanisms of allelopathy by cyanobacteria. The best known examples are from studies on microcystins, which affect plants and aquatic algae by interfering with protein phosphatases in a manner similar to their effect on vertebrate enzymes (Babica et al. 2006). However, there is evidence that microcystins can also promote the formation of reactive oxygen species (ROS) in photoautotrophs, which can cause extensive damage to cellular membranes and enzymes (Babica et al. 2006 Leflaive and Ten-Hage 2007). 

Apel K, Hirt H (2004) Reactive oxygen species metabolism, oxidative stress, and signal transduction. Annu Rev Plant Biol 55 373-399... 

Torres MA, Dangl JL (2005) Functions of the respiratory burst oxidase in biotic interactions, abiotic stress and development. Curr Opin Plant Biol 8 397 403 Torres MA, Jones JD, Dangl JL (2006) Reactive oxygen species signaling in response to pathogens. Plant Physiol 141 373-378... 

Phytohormones such as ethylene, salicylic acid (SA), JA, and abscisic acid (ABA) regulate responses of plants to stresses via action referred as signaling crosstalk. Moreover, reactive oxygen species (ROS), the toxic byproducts of aerobic metabolism, play the important role of signaling molecules. Usually, the defensive responses of plants depend on the interaction (positive or negative) between phytohormone signaling pathways rather than on the independent contribution of each of them. " ... 

Kluza, J., Mazinghien, R., Degardin, K., Lansiaux, A. and Badly, C. 2005. Induction of apoptosis by the plant alkaloid sampangine in human HL-60 leukemia cells is mediated by reactive oxygen species. European Journal of Pharmacology, 525(1-3) 32 0. 

Alscher, R.G., Donahue, J.L., and Cramer, C.L., Reactive oxygen species and antioxidants relationships in green cells. Physiol. Plant., 100, 224, 1997. 

Babu, T.S. et al.. Similar stress responses are elicited by copper and ultraviolet radiation in the aquatic plant Lemna gibba implication of reactive oxygen species as common signals, Plant Cell Physiol, 44, 1320, 2003. 

Smirnoff, N., Antioxidants and Reactive Oxygen Species in Plants, Blackwell Publishing, Oxford, pp. 302. 

---