TY - JOUR
T1 - High-affinity ammonium transporters and nitrogen sensing in mycorrhizas
AU - Javelle, Arnaud
AU - André, Bruno
AU - Marini, Anne Marie
AU - Chalot, Michel
PY - 2003
Y1 - 2003
N2 - Most terrestrial plants live in mutualistic symbiosis with root-infecting mycorrhizal fungi. This association requires a molecular dialogue between the two partners. However, the nature of the chemical signals that induce hyphal differentiation are not well characterized and the mechanisms for signal reception are still unknown. In addition to its role in ammonium scavenging, the Mep2 protein from Saccharomyces cerevisiae has been proposed to act as an ammonium sensor that is essential for pseudohyphal differentiation in response to ammonium limitation. We propose that the high-affinity ammonium transporters from mycorrhizal fungi act in a similar manner to sense the environment and induce, via as-yet-unidentified signal transduction cascades, the switch in the mode of fungal growth observed during the formation of mycorrhiza.
AB - Most terrestrial plants live in mutualistic symbiosis with root-infecting mycorrhizal fungi. This association requires a molecular dialogue between the two partners. However, the nature of the chemical signals that induce hyphal differentiation are not well characterized and the mechanisms for signal reception are still unknown. In addition to its role in ammonium scavenging, the Mep2 protein from Saccharomyces cerevisiae has been proposed to act as an ammonium sensor that is essential for pseudohyphal differentiation in response to ammonium limitation. We propose that the high-affinity ammonium transporters from mycorrhizal fungi act in a similar manner to sense the environment and induce, via as-yet-unidentified signal transduction cascades, the switch in the mode of fungal growth observed during the formation of mycorrhiza.
U2 - 10.1016/S0966-842X(02)00012-4
DO - 10.1016/S0966-842X(02)00012-4
M3 - Article
C2 - 12598122
SN - 0966-842X
VL - 11
SP - 53
EP - 55
JO - Trends in Microbiology
JF - Trends in Microbiology
IS - 2
ER -