Identification of a Plant Nitric Oxide Synthase Gene Involved in Hormonal Signaling

Guo, Fang-Qing; Okamoto, Mamoru; Crawford, Nigel M.

doi:10.1126/science.1086770

Identification of a Plant Nitric Oxide Synthase Gene Involved in Hormonal Signaling

Nitric oxide (NO) serves as a signal in plants. An Arabidopsis mutant ( Atnos1 ) was identified that had impaired NO production, organ growth, and abscisic acid–induced stomatal movements. Expression of AtNOS1 with a viral promoter in Atnos1 mutant plants resulted in overproduction of NO. Purifie…