Interaction between BZR1 and EIN3 mediates signalling crosstalk between brassinosteroids and ethylene

Zhao, Na1; Zhao, Min1; Tian, Yanchen1; Wang, Yichuan2; Han, Chao1; Fan, Min1; Guo, Hongwei2; Bai, Ming-Yi1

2021-09-01

10.1111/nph.17694

NEW PHYTOLOGIST   影响因子和分区

0028-646X

1469-8137

Plant growth and development are coordinated by multiple environmental and endogenous signals. Brassinosteroid (BR) and ethylene (ET) have overlapping functions in a wide range of developmental processes. However, the relationship between the BR and ET signalling pathways has remained unclear. Here, we show that BR and ET interdependently promote apical hook development and cell elongation through a direct interaction between BR-activated BRASSINOZALE-RESISTANT1 (BZR1) and ET-activated ETHYLENE INSENSITIVE3 (EIN3). Genetic analysis showed that BR signalling is required for ET promotion of apical hook development in the dark and cell elongation under light, and ET quantitatively enhances BR-potentiated growth. BZR1 interacts with EIN3 to co-operatively increase the expression of HOOKLESS1 and PACLOBUTRAZOL RESISTANCE FACTORs (PREs). Furthermore, we found that BR promotion of hook development requires gibberellin (GA), and GA restores the hookless phenotype of BR-deficient materials by activating EIN3/EIL1. Our findings shed light on the molecular mechanism underlying the regulation of plant development by BR, ET and GA signals through the direct interaction of master transcriptional regulators.

apical hook Arabidopsis brassinosteroid BZR1 EIL1 EIN3 ethylene

SCI

英语

其他

National Natural Science Foundation of China[31870262,31970306,32070210] ; Shandong Province Natural Science Foundation["ZR2019ZD16","2019LZGC-015"]

Plant Sciences

Plant Sciences

WOS:000692421700001

WILEY

PLANT & ANIMAL SCIENCE

Web of Science

1.Shandong Univ, Sch Life Sci, Key Lab Plant Dev & Environm Adaptat Biol, Minist Educ, Qingdao 266237, Peoples R China
2.Southern Univ Sci & Technol, Inst Plant & Food Sci, Dept Biol, Shenzhen 518055, Guangdong, Peoples R China

Zhao, Na,Zhao, Min,Tian, Yanchen,et al. Interaction between BZR1 and EIN3 mediates signalling crosstalk between brassinosteroids and ethylene[J]. NEW PHYTOLOGIST,2021.

Zhao, Na.,Zhao, Min.,Tian, Yanchen.,Wang, Yichuan.,Han, Chao.,...&Bai, Ming-Yi.(2021).Interaction between BZR1 and EIN3 mediates signalling crosstalk between brassinosteroids and ethylene.NEW PHYTOLOGIST.

Zhao, Na,et al."Interaction between BZR1 and EIN3 mediates signalling crosstalk between brassinosteroids and ethylene".NEW PHYTOLOGIST (2021).