Brachytic 1 of barley (Hordeum vulgare L.) encodes the α subunit of heterotrimeric G protein.

Physiological and molecular biological analysis of the dwarf barley (Hordeum vulgare L.) mutant brachytic 1 (brh1) was conducted. The root responses of brh1 to brassinolide were weaker than those of wild type, but the responses of leaf segments of dark-grown plants were not.