GLN — Nicotiana attenuata

Summary

A4A49_29619 (symbol GLN, preferred name GS1-2) in coyote tobacco (Nicotiana attenuata) encodes a glutamine synthetase (EC 6.3.1.2) with a Gln_synth_cat_dom domain. The gene is associated with glutamine biosynthesis, nitrate assimilation, and the ammonia assimilation cycle, as well as leaf development, leaf senescence, cell death, and response to water and cadmium. It is linked to traits including root dry weight, chlorophyll content, photosynthetic rate, protein content, proline content, cytokinin content, flowering time, and stomatal opening. Phenotype associations include seed yield, seed germination, vegetative growth, nitrogen remobilisation, ammonium toxicity tolerance, salt stress response, cold stress tolerance, and plant defense. Studies of related genes in other species link the family to ammonium tolerance, lateral root development, and circadian rhythm.