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Lu Z, Ma C, Xie Y, Zeng Y, Peng J, Zhou D, Wu J. Understanding the Brassinosteroid-Dependent Environmental Adaption in Brassicaceae Plants. PLANTS (BASEL, SWITZERLAND) 2025; 14:1554. [PMID: 40431121 PMCID: PMC12114829 DOI: 10.3390/plants14101554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2025] [Revised: 05/19/2025] [Accepted: 05/20/2025] [Indexed: 05/29/2025]
Abstract
Plant adaptation to various stresses depends on transmitting the external stress signals into internal signals. Brassinosteroids (BRs) play pivotal roles in connecting the external and internal signals in Brassicaceae plants, particularly under abiotic stresses such as drought, cold, heat and salinity. They modulate plant growth and stress responses through receptor kinase-mediated signaling pathways, which integrate with redox homeostasis, antioxidant systems and crosstalk with other phytohormones, including auxin, abscisic acid, ethylene, cytokinins, gibberellines, jasmonates and salicylic acid. BR-dependent pathways are critical for balancing stress resilience and productivity in Brassicaceae plants. In this review, we introduce BR metabolism, signaling transduction and discuss their functions in regulating growth and development processes under adverse environment in Brassicaceae plants. We also emphasize recent advances in the crosstalk among BR and other phytohormones in stresses response. Understanding the mechanisms of BR-dependent pathways offers new approaches for enhancing the adaptation under adverse conditions in Brassicaceae crops.
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Affiliation(s)
- Zhenni Lu
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
| | - Changrui Ma
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
| | - Yuzhen Xie
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
| | - Yuqing Zeng
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
| | - Jiashi Peng
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Dinggang Zhou
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Hunan University of Science and Technology, Xiangtan 411201, China
- Yuelushan Laboratory, Changsha 410125, China
| | - Jinfeng Wu
- School of Life and Health Sciences, Hunan University of Science and Technology, Xiangtan 411201, China; (Z.L.); (C.M.); (Y.X.); (Y.Z.); (J.P.); (D.Z.)
- Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization, Hunan University of Science and Technology, Xiangtan 411201, China
- Yuelushan Laboratory, Changsha 410125, China
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Zhang S, Liao Q, Li J, Liu W, Zhang X, Tian X, Wang S, Zhang Q. The scaffold protein RACK1 regulates root growth and gravitropic response by recruiting PINOID to phosphorylate the auxin efflux transporter PIN-FORMED2. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2025. [PMID: 39912541 DOI: 10.1111/jipb.13858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2024] [Revised: 01/12/2025] [Accepted: 01/15/2025] [Indexed: 02/07/2025]
Abstract
The scaffolding protein RACK1 is involved in polar auxin transport and signaling. It binds to PINOID and PIN-FORMED2, enhancing their interaction and phosphorylation-dependent auxin efflux. Knocking down RACK1 genes impairs auxin-related processes such as root growth and gravitropic response.
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Affiliation(s)
- Shujuan Zhang
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qi Liao
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiale Li
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenbao Liu
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xinwen Zhang
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xindi Tian
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shucai Wang
- Laboratory of Plant Molecular Genetics & Crop Gene Editing, School of Life Sciences, Linyi University, Linyi, 276005, China
| | - Qun Zhang
- College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybean, Nanjing Agricultural University, Nanjing, 210095, China
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