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SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice
journal contribution
posted on 2023-05-21, 09:41 authored by Liao, Z, Yu, H, Duan, J, Yuan, K, Yu, C, Meng, X, Kou, L, Chen, M, Jing, Y, Liu, G, Steven SmithSteven Smith, Li, JThe breeding of cereals with altered gibberellin (GA) signaling propelled the ‘Green Revolution’ by generating semidwarf plants with increased tiller number. The mechanism by which GAs promote shoot height has been studied extensively, but it is not known what causes the inverse relationship between plant height and tiller number. Here we show that rice tiller number regulator MONOCULM 1 (MOC1) is protected from degradation by binding to the DELLA protein SLENDER RICE 1 (SLR1). GAs trigger the degradation of SLR1, leading to stem elongation and also to the degradation of MOC1, and hence a decrease in tiller number. This discovery provides a molecular explanation for the coordinated control of plant height and tiller number in rice by GAs, SLR1 and MOC1.
History
Publication title
Nature CommunicationsVolume
10Article number
2738Number
2738Pagination
2738ISSN
2041-1723Department/School
School of Natural SciencesPublisher
Nature Publishing GroupPlace of publication
United KingdomRepository Status
- Restricted