A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling

Canales, Javier; Arenas-M, Anita; Medina, Joaquín; Vidal, Elena A.

doi:10.3390/ijms24032819

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A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling

¹

Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5110566, Chile

²

ANID-Millennium Science Initiative Program-Millennium Institute for Integrative Biology (iBio), Santiago 8331150, Chile

³

Centro de Biotecnología y Genómica de Plantas, INIA-CSIC-Universidad Politécnica de Madrid, 28223 Madrid, Spain

⁴

Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile

⁵

Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile

^*

Authors to whom correspondence should be addressed.

Int. J. Mol. Sci. 2023, 24(3), 2819; https://doi.org/10.3390/ijms24032819

Submission received: 16 December 2022 / Revised: 20 January 2023 / Accepted: 28 January 2023 / Published: 1 February 2023

(This article belongs to the Special Issue Phytohormones and the Regulation of Stress Tolerance in Plants)

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Abstract

LSUs (RESPONSE TO LOW SULFUR) are plant-specific proteins of unknown function that were initially identified during transcriptomic studies of the sulfur deficiency response in Arabidopsis. Recent functional studies have shown that LSUs are important hubs of protein interaction networks with potential roles in plant stress responses. In particular, LSU proteins have been reported to interact with members of the brassinosteroid, jasmonate signaling, and ethylene biosynthetic pathways, suggesting that LSUs may be involved in response to plant stress through modulation of phytohormones. Furthermore, in silico analysis of the promoter regions of LSU genes in Arabidopsis has revealed the presence of cis-regulatory elements that are potentially responsive to phytohormones such as ABA, auxin, and jasmonic acid, suggesting crosstalk between LSU proteins and phytohormones. In this review, we summarize current knowledge about the LSU gene family in plants and its potential role in phytohormone responses.

Keywords: sulfate deficiency; LSU; response to low sulfur; abiotic stress; sulfur nutrition; ethylene; auxin; phytohormones; transcription factors

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MDPI and ACS Style

Canales, J.; Arenas-M, A.; Medina, J.; Vidal, E.A. A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling. Int. J. Mol. Sci. 2023, 24, 2819. https://doi.org/10.3390/ijms24032819

AMA Style

Canales J, Arenas-M A, Medina J, Vidal EA. A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling. International Journal of Molecular Sciences. 2023; 24(3):2819. https://doi.org/10.3390/ijms24032819

Chicago/Turabian Style

Canales, Javier, Anita Arenas-M, Joaquín Medina, and Elena A. Vidal. 2023. "A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling" International Journal of Molecular Sciences 24, no. 3: 2819. https://doi.org/10.3390/ijms24032819

APA Style

Canales, J., Arenas-M, A., Medina, J., & Vidal, E. A. (2023). A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling. International Journal of Molecular Sciences, 24(3), 2819. https://doi.org/10.3390/ijms24032819

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A Revised View of the LSU Gene Family: New Functions in Plant Stress Responses and Phytohormone Signaling

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