Receptory glutaminianu u roślin
DOI:
https://doi.org/10.18778/1730-2366.03.09Abstract
Badania prowadzone na pobudliwych plechach wątrobowca Conocephalum conicum wykazały, że podanie 5 mM roztworu glutaminianu (Glu) bądź glicyny (Gly) wywołuje serie potencjałów czynnościowych (AP), którym towarzyszy napływ wapnia do cytoplazmy pobudzonej komórki. Otrzymane wyniki są zgodne z istniejącą hipotezą że międzykomórkowy signalling oparty na aminokwasach jest obecny w królestwie roślin i zwierząt. Jak dotąd opublikowane dane eksperymentalne z równoległych pomiarów wewnątrzkom órkowego stężenia Ca"+ i poziomu potencjału transmem branowego izolowanych komórek liści (M eyerhoff et al. 2004, 2005) lub korzenia (Dennison i Spalding 2000) dotyczą głownie A rabidopsis thaliana, u której to rośliny zlokalizowano i sklonowano geny receptora kwasu glutaminowego (GLR). Nasze badania po raz pierwszy wykazały istnienie zależności między podaniem Glu a pobudzeniem u roślin niższych.Downloads
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