JOURNAL ARTICLE

BIL9 Promotes Both Plant Growth via BR Signaling and Drought Stress Resistance by Binding with the Transcription Factor HDG11.

  • Published In: Plant & Cell Physiology, 2024, v. 65, n. 10. P. 1640 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Surina, Surina; Yamagami, Ayumi; Miyaji, Tomoko; Chagan, Zhana; Chung, KwiMi; Mitsuda, Nobutaka; Nishida, Kaisei; Tachibana, Ryo; Zhu, Zhangliang; Miyakawa, Takuya; Shinozaki, Kazuo; Sakuta, Masaaki; Asami, Tadao; Nakano, Takeshi 3 of 3

Abstract

This article focuses on the identification and functional characterization of a novel Arabidopsis gene, BRZ INSENSITIVE LONG HYPOCOTYL 9 (BIL9), which promotes plant growth via brassinosteroid (BR) signaling and enhances drought-stress resistance. Overexpression of BIL9 increases the active form of the BR master transcription factor BIL1/BZR1, leading to growth promotion, and also upregulates drought-responsive genes by interacting with the HD-Zip IV transcription factor HOMEODOMAIN GLABROUS 11 (HDG11), known for its role in drought tolerance. BIL9 protein levels are induced by dehydration but not by abscisic acid (ABA), and BIL9 cooperates with HDG11 to enhance transcriptional activation of drought-related genes, thereby improving drought resistance without compromising growth. This study provides insights into the molecular mechanisms balancing plant growth and drought stress responses through BR signaling and transcription factor interaction.

Additional Information

  • Source:Plant & Cell Physiology. 2024/10, Vol. 65, Issue 10, p1640
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2024
  • ISSN:0032-0781
  • DOI:10.1093/pcp/pcae009
  • Accession Number:180861879
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