US EPA

2235204 

Journal Article 

Short term signaling responses in roots of young soybean seedlings exposed to cadmium stress 

Chmielowska-Bąk, J; Lefèvre, I; Lutts, S; Deckert, J 

2013 

Yes 

Journal of Plant Physiology
ISSN: 0176-1617 

170 

18 

1585-1594 

English 

23942356 

10.1016/j.jplph.2013.06.019 

WOS:000327170700005 

In the present study, the expression of fourteen genes involved in various signal transduction pathways was examined in young soybean (Glycine max) seedlings exposed to cadmium at two concentrations (10 mg L(-1) and 25 mg L(-1)) for short time periods (3, 6 and 24 h). The results show that cadmium causes induction of genes encoding proteins involved in ethylene and polyamines metabolism, nitric oxide generation, MAPK cascades and regulation of other genes' expression. The bioinformatic analysis of promoter sequences of Cd-inducible genes revealed that their promoters possess several regulative motifs associated with the plant response to stress factors and abscisic acid and ethylene signaling. The involvement of ethylene in the response of soybean seedlings to cadmium stress was further confirmed by the real-time analysis of ethylene production during 24 h of CdCl2 treatment. The role of the described signaling elements in transduction of the cadmium signal in young soybean seedlings is discussed. 

Cadmium; Ethylene; Gene expression; Signaling; Transcription factors