J Integr Plant Biol. ›› 2023, Vol. 65 ›› Issue (12): 2631-2644.DOI: 10.1111/jipb.13554

• Molecular Ecology and Evolution • Previous Articles     Next Articles

The advantages of crosstalk during the evolution of the BZR1-ARF6-PIF4 (BAP) module

Runjie Diao, Mengru Zhao, Yannan Liu, Zhenhua Zhang* and Bojian Zhong*   

  1. College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
    *Correspondences:Zhenhua Zhang(zhenhualovexx@gmail.com);Bojian Zhong(bjzhong@gmail.com, Dr. Zhong is responsible for the distribution of the material associated with this article)
  • Received:2023-03-16 Accepted:2023-08-08 Online:2023-08-08 Published:2023-12-01

Abstract: The BAP module, comprising BRASSINAZOLE RESISTANT 1 (BZR1), AUXIN RESPONSE FACTOR 6 (ARF6), and PHYTOCHROME-INTERACTING FACTOR 4 (PIF4), functions as a molecular hub to orchestrate plant growth and development. In Arabidopsis thaliana, components of the BAP module physically interact to form a complex system that integrates light, brassinosteroid (BR), and auxin signals. Little is known about the origin and evolution of the BAP module. Here, we conducted comparative genomic and transcriptomic analyses to investigate the evolution and functional diversification of the BAP module. Our results suggest that the BAP module originated in land plants and that the ζ, ε, and γ whole-genome duplication/triplication events contributed to the expansion of BAP module components in seed plants. Comparative transcriptomic analysis suggested that the prototype BAP module arose in Marchantia polymorpha, experienced stepwise evolution, and became established as a mature regulatory system in seed plants. We developed a formula to calculate the signal transduction productivity of the BAP module and demonstrate that more crosstalk among components enables higher signal transduction efficiency. Our results reveal the evolutionary history of the BAP module and provide insights into the evolution of plant signaling networks and the strategies employed by plants to integrate environmental and endogenous signals.

Key words: BAP module, crosstalk, origin and evolution, signaling networks

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q