Ethylene pp 241-288 | Cite as

Ethylene in Pathogenesis

  • Muhammad Arshad
  • William T. FrankenbergerJr.

Abstract

Stress C2H4 represents collectively the accelerated C2H4 production in plants induced by various abiotic (wounding, physical load, chilling temperatures, waterlogging, and exposure to chemicals) and biotic (disease and insect damage) factors. Plant C2H4 synthesis is often significantly increased during infection by pathogens and can also be induced by treatment with pathogen-derived elicitors (Boiler, 1991; Pegg, 1976b; Frankenberger and Arshad, 1995). It has been proposed that C2H4 acts as a messenger during plant-microbe interactions. This accelerated stress C2H4 during pathogenesis may be a stimulus for defense responses that lead to resistance or conversely, it may play a role in disease symptom development and in the weakening of endogenous resistance (Ben-David et al., 1986; Boiler, 1991; Pegg, 1976b; Stall and Hall, 1984; Yang and Hoffman, 1984; Abeles et al., 1992; Lund et al., 1998). By using various mutants of soybean altered in C2H4 sensitivity and a number of pathogens (virulent and avirulent), Hoffman et al. (1999) concluded that the reduced C2H4 sensitivity could be beneficial against some pathogens but deletrious to resistance against other pathogens. This chapter deals mainly with infection-induced C2H4 production and its possible role in disease or resistance development in the infected hosts. Excellent reviews related to this subject are published elsewhere (Abeles et al., 1992; Boiler, 1982, 1991, 1990; Hislop et al., 1973b; Archer and Hislop, 1975; Pegg, 1976b; Frankenberger and Arshad, 1995).

Keywords

Chitosan Chitin Phenylalanine Polyphenol Hydrolase 

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Copyright information

© Springer Science+Business Media New York 2002

Authors and Affiliations

  • Muhammad Arshad
    • 1
  • William T. FrankenbergerJr.
    • 2
  1. 1.University of AgricultureFaisalabadPakistan
  2. 2.University of CaliforniaRiversideCalifornia

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