SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice
journal contribution
posted on 2023-05-21, 09:41authored byLiao, Z, Yu, H, Duan, J, Yuan, K, Yu, C, Meng, X, Kou, L, Chen, M, Jing, Y, Liu, G, Steven SmithSteven Smith, Li, J
The 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 Communications
Volume
10
Article number
2738
Number
2738
Pagination
2738
ISSN
2041-1723
Department/School
School of Natural Sciences
Publisher
Nature Publishing Group
Place of publication
United Kingdom
Repository Status
Restricted
Socio-economic Objectives
Rice; Expanding knowledge in the biological sciences