TY - JOUR
T1 - Time to pump iron
T2 - iron-deficiency-signaling mechanisms of higher plants
AU - Walker, Elsbeth L.
AU - Connolly, Erin L.
N1 - Funding Information:
The authors are grateful to the National Research Initiative of the USDA Cooperative State Research, Education, and Extension Service (grant number 2005-35100-15794 to ELW and 2004-35100-14934 to ELC) and the National Science Foundation (IBN-0344305 to ELC) for financial support.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/10
Y1 - 2008/10
N2 - Iron is an essential nutrient for plants, yet it often limits plant growth. On the contrary, overaccumulation of iron within plant cells leads to oxidative stress. As a consequence, iron-uptake systems are carefully regulated to ensure that iron homeostasis is maintained. In response to iron limitation, plants induce expression of sets of activities that function at the root-soil interface to solubilize iron and subsequently transfer it across the plasma membrane of root cells. Recent advances have revealed key players in the signaling pathways that function to induce these iron-uptake responses. Transcription factors belonging to the basic helix-loop-helix, ABI3/VP1(B3), and NAC families appear to function either directly or indirectly in the upregulation of iron deficiency responses.
AB - Iron is an essential nutrient for plants, yet it often limits plant growth. On the contrary, overaccumulation of iron within plant cells leads to oxidative stress. As a consequence, iron-uptake systems are carefully regulated to ensure that iron homeostasis is maintained. In response to iron limitation, plants induce expression of sets of activities that function at the root-soil interface to solubilize iron and subsequently transfer it across the plasma membrane of root cells. Recent advances have revealed key players in the signaling pathways that function to induce these iron-uptake responses. Transcription factors belonging to the basic helix-loop-helix, ABI3/VP1(B3), and NAC families appear to function either directly or indirectly in the upregulation of iron deficiency responses.
UR - http://www.scopus.com/inward/record.url?scp=51649126661&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51649126661&partnerID=8YFLogxK
U2 - 10.1016/j.pbi.2008.06.013
DO - 10.1016/j.pbi.2008.06.013
M3 - Review article
C2 - 18722804
AN - SCOPUS:51649126661
SN - 1369-5266
VL - 11
SP - 530
EP - 535
JO - Current Opinion in Plant Biology
JF - Current Opinion in Plant Biology
IS - 5
ER -