Molecular and genetic characterization of ethylene involvement in mycotoxin-induced plant cell death.
MOORE, T., MARTINEAU, B., BOSTOCK, R.M., LINCOLN, J.E. and GILCHRIST, D.G.
Physiological and Molecular Plant Pathology 54 : 73-85.
1999
บทคัดย่อ
AAL-toxin and FB1 cause interveinal cell death in susceptible lines of tomato with morphological characteristics of apoptosis. Concomitant with cell death, an increase in 1-aminocyclopropane-1-carboxylic acid (ACC) and ethylene occurs. The primary ACC synthase gene family member involved, LE ACS2, has now been identified. FB1 caused the accumulation of LE ACS2 mRNA with a similar time course but to a lower level than did AAL-toxin. Nevertheless, ACC levels were similar for AAL and FB1 treated tissue. ACC oxidase mRNA was also induced by both mycotoxins and again AAL-toxin induction was greater than that with FB1. The induction of ACC synthase and ACC oxidase mRNA observed here represents the earliest changes in gene expression noted in this cell death system to date.