Article
A gain-of-function mutation in a cytokinin receptor triggers spontaneous root nodule organogenesis.
Science (New York, N.Y.) - 5 Jan 2007
Tirichine Leïla, Sandal Niels, Madsen Lene H, Radutoiu Simona, Albrektsen Anita S, Sato Shusei, Asamizu Erika, Tabata Satoshi, Stougaard Jens
Abstract excerpt
Legume root nodules originate from differentiated cortical cells that reenter the cell cycle and form organ primordia. We show that perception of the phytohormone cytokinin is a key element in this switch. Mutation of a Lotus japonicus cytokinin receptor gene leads to spontaneous development of root nodules in the absence of rhizobia or rhizobial signal molecules. The mutant histidine kinase receptor has...
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