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Plant steroids on the move : mechanisms of brassinosteroid export

Ziliang Hu (UGent) , Hong Wei, Linfeng Sun and Eugenia Russinova (UGent)
(2025) TRENDS IN BIOCHEMICAL SCIENCES. 50(6). p.508-519
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Abstract
Brassinosteroids (BRs) are essential plant steroidal hormones that regulate growth and development. The recent discoveries of ATP-binding cassette subfamily B (ABCB) members, ABCB19 and ABCB1, as BR transporters highlight the significance of active export to the apoplast in maintaining BR homeostasis and enabling effective signaling. This review focuses on the latest progress in understanding ABCB-mediated BR transport, with particular attention to the structural and functional characterization of Arabidopsis ABCB19 and ABCB1. These findings reveal both conserved and distinct features in substrate recognition and transport mechanisms, providing valuable insights into their roles in hormonal regulation. Additionally, the evolutionary conservation of ABC transporters in mediating sterol-based signaling across biological kingdoms underscores their fundamental biological significance.
Keywords
brassinosteroids, ABCB19, auxin, plant hormones, ATP-binding cassette (ABC) transporter, ABCB1, brassinosteroids (BRs), ABC TRANSPORTERS, AUXIN TRANSPORT, LATERAL ROOT, PHOSPHORYLATION, SUBSTRATE, CYTOCHROME-P450, BIOSYNTHESIS, ENCODES, EVENTS, REVEAL

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MLA
Hu, Ziliang, et al. “Plant Steroids on the Move : Mechanisms of Brassinosteroid Export.” TRENDS IN BIOCHEMICAL SCIENCES, vol. 50, no. 6, 2025, pp. 508–19, doi:10.1016/j.tibs.2025.03.003.
APA
Hu, Z., Wei, H., Sun, L., & Russinova, E. (2025). Plant steroids on the move : mechanisms of brassinosteroid export. TRENDS IN BIOCHEMICAL SCIENCES, 50(6), 508–519. https://doi.org/10.1016/j.tibs.2025.03.003
Chicago author-date
Hu, Ziliang, Hong Wei, Linfeng Sun, and Eugenia Russinova. 2025. “Plant Steroids on the Move : Mechanisms of Brassinosteroid Export.” TRENDS IN BIOCHEMICAL SCIENCES 50 (6): 508–19. https://doi.org/10.1016/j.tibs.2025.03.003.
Chicago author-date (all authors)
Hu, Ziliang, Hong Wei, Linfeng Sun, and Eugenia Russinova. 2025. “Plant Steroids on the Move : Mechanisms of Brassinosteroid Export.” TRENDS IN BIOCHEMICAL SCIENCES 50 (6): 508–519. doi:10.1016/j.tibs.2025.03.003.
Vancouver
1.
Hu Z, Wei H, Sun L, Russinova E. Plant steroids on the move : mechanisms of brassinosteroid export. TRENDS IN BIOCHEMICAL SCIENCES. 2025;50(6):508–19.
IEEE
[1]
Z. Hu, H. Wei, L. Sun, and E. Russinova, “Plant steroids on the move : mechanisms of brassinosteroid export,” TRENDS IN BIOCHEMICAL SCIENCES, vol. 50, no. 6, pp. 508–519, 2025.
@article{01JQNXHFBXNV486J50FFDYFJNH,
  abstract     = {{Brassinosteroids (BRs) are essential plant steroidal hormones that regulate growth and development. The recent discoveries of ATP-binding cassette subfamily B (ABCB) members, ABCB19 and ABCB1, as BR transporters highlight the significance of active export to the apoplast in maintaining BR homeostasis and enabling effective signaling. This review focuses on the latest progress in understanding ABCB-mediated BR transport, with particular attention to the structural and functional characterization of Arabidopsis ABCB19 and ABCB1. These findings reveal both conserved and distinct features in substrate recognition and transport mechanisms, providing valuable insights into their roles in hormonal regulation. Additionally, the evolutionary conservation of ABC transporters in mediating sterol-based signaling across biological kingdoms underscores their fundamental biological significance.}},
  author       = {{Hu, Ziliang and Wei, Hong and Sun, Linfeng and Russinova, Eugenia}},
  issn         = {{0968-0004}},
  journal      = {{TRENDS IN BIOCHEMICAL SCIENCES}},
  keywords     = {{brassinosteroids,ABCB19,auxin,plant hormones,ATP-binding cassette (ABC) transporter,ABCB1,brassinosteroids (BRs),ABC TRANSPORTERS,AUXIN TRANSPORT,LATERAL ROOT,PHOSPHORYLATION,SUBSTRATE,CYTOCHROME-P450,BIOSYNTHESIS,ENCODES,EVENTS,REVEAL}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{508--519}},
  title        = {{Plant steroids on the move : mechanisms of brassinosteroid export}},
  url          = {{http://doi.org/10.1016/j.tibs.2025.03.003}},
  volume       = {{50}},
  year         = {{2025}},
}
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