Glutamate-gated receptor that probably acts as non-selective cation channel. Can transport calcium ions. May be involved in light-signal transduction and calcium homeostasis via the regulation of calcium influx into cells. May form heteromers. Expressed predominantly in roots and siliques. Belongs to the glutamate-gated ion channel (TC 1.A.10.1) family. AAL61996 is a fragment and was originally reported as a spliced variant of AAL61995.