ibclogo XVI International Botanical Congess

Abstract Number: 3773
Poster No. = 2064


FUSICCOCCIN EFFECT ON WHEAT CELLS RESPONSE TO SUDDEN SALT STRESS


Olga Babourina(1), Tatiana Leonova(2) and Ian Newman(1), (1)University of Tasmania, GPO Box 252-21, Hobart, Australia, 7001.(2)ABRI, 42 Timiryazevskaya, Moscow, Russia, 127550


Sudden salt stress results in a multiphasic response of Na+ accumulation in plant suspension cells (Babourina and Leonova, 1994: Rus J Plant Phys 41, 407-409). The effect of fusicoccin (FC)on sodium fluxes in wheat suspension cells was studied during sudden salt stress.Plant cells were pretreated with 10-6 M FC for 30 min and then exposed to 120 mM NaCl. Na+ fluxes were studied using the MIFE system (Shabala et al., 1997: Plant Phys 113, 111-118). It was revealed that FC enhanced sodium accumulation within wheat cells during sudden salt stress. This effect was due to the shift of Na+ flux towards influx, while the general Na+ flux behaviour was very similar to the response of untreated cells.

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