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SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice


Liao, Z and Yu, H and Duan, J and Yuan, K and Yu, C and Meng, X and Kou, L and Chen, M and Jing, Y and Liu, G and Smith, SM and Li, J, SLR1 inhibits MOC1 degradation to coordinate tiller number and plant height in rice, Nature Communications, 10, (1) Article 2738. ISSN 2041-1723 (2019) [Refereed Article]

DOI: doi:10.1038/s41467-019-10667-2


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.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Smith, SM (Professor Steven Smith)
ID Code:151166
Year Published:2019
Web of Science® Times Cited:65
Deposited By:Plant Science
Deposited On:2022-07-23
Last Modified:2022-07-23

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