UC San Diego inventors have identified and cloned a nitric oxide (NO) synthase gene from plants, AtNOS1, which has been shown to play a role in plant growth, stomatal movement, hormonal signaling and fertility. The protein was expressed in bacteria as a fusion protein with glutathione-S-transferase (GST-AtNOS1), purified and assayed. The inventors were able to show that extracts from bacteria expressing the fusion protein had higher levels of NOS activity. It is particularly interesting that this gene in plants has been known, but never isolated.
Agriculture companies may be interested in obtaining the plasmid for genetic manipulation of their plants to enhance leaf greening and growth, and regulation of stomatal opening and closure. In addition, basic researchers might want antibodies made against the specific plant nitric oxide synthase.