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Volume 25
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

The REPLUMLESS Transcription Factor Controls the Expression of the RECEPTOR-LIKE CYTOPLASMIC KINASE VI_A2 Gene Involved in Shoot and Fruit Patterning of Arabidopsis thaliana

by
Erzsébet Kenesi
1,
Orsolya Beöthy-Fehér
1,2,
Réka Szőllősi
3,
Ildikó Domonkos
1,
Ildikó Valkai
1 and
Attila Fehér
1,3,*
1
Institute of Plant Biology, HUN-REN Biological Research Centre, H-6726 Szeged, Hungary
2
Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary
3
Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2024, 25(14), 8001; https://doi.org/10.3390/ijms25148001 (registering DOI)
Submission received: 4 July 2024 / Revised: 18 July 2024 / Accepted: 19 July 2024 / Published: 22 July 2024
(This article belongs to the Special Issue Modern Plant Cell Biotechnology: From Genes to Structure, 2nd Edition)
Versions Notes

Abstract

The promoter of the RECEPTOR-LIKE CYTOPLASMIC KINASE VI_A2 (RLCK VI_A2) gene contains nine binding sites for the REPLUMLESS (RPL) transcription factor. In agreement, the expression of the kinase gene was strongly downregulated in the rpl-4 mutant. Comparing phenotypes of loss-of-function mutants, it was revealed that both genes are involved in stem growth, phyllotaxis, organization of the vascular tissues, and the replum, highlighting potential functional interactions. The expression of the RLCKVI_A2 gene from the constitutive 35S promoter could not complement the rpl-4 phenotypes but exhibited a dominant positive effect on stem growth and affected vascular differentiation and organization. The results also indicated that the number of vascular bundles is regulated independently from stem thickness. Although our study cannot demonstrate a direct link between the RPL and RLVKVI_A2 genes, it highlights the significance of the proper developmental regulation of the RLCKVI_A2 promoter for balanced stem development.
Keywords: phyllotaxis; replum; stem thickness; BELLRINGER transcription factor; vascular bundles; ROP GTPase-activated kinase phyllotaxis; replum; stem thickness; BELLRINGER transcription factor; vascular bundles; ROP GTPase-activated kinase

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MDPI and ACS Style

Kenesi, E.; Beöthy-Fehér, O.; Szőllősi, R.; Domonkos, I.; Valkai, I.; Fehér, A. The REPLUMLESS Transcription Factor Controls the Expression of the RECEPTOR-LIKE CYTOPLASMIC KINASE VI_A2 Gene Involved in Shoot and Fruit Patterning of Arabidopsis thaliana. Int. J. Mol. Sci. 2024, 25, 8001. https://doi.org/10.3390/ijms25148001

AMA Style

Kenesi E, Beöthy-Fehér O, Szőllősi R, Domonkos I, Valkai I, Fehér A. The REPLUMLESS Transcription Factor Controls the Expression of the RECEPTOR-LIKE CYTOPLASMIC KINASE VI_A2 Gene Involved in Shoot and Fruit Patterning of Arabidopsis thaliana. International Journal of Molecular Sciences. 2024; 25(14):8001. https://doi.org/10.3390/ijms25148001

Chicago/Turabian Style

Kenesi, Erzsébet, Orsolya Beöthy-Fehér, Réka Szőllősi, Ildikó Domonkos, Ildikó Valkai, and Attila Fehér. 2024. "The REPLUMLESS Transcription Factor Controls the Expression of the RECEPTOR-LIKE CYTOPLASMIC KINASE VI_A2 Gene Involved in Shoot and Fruit Patterning of Arabidopsis thaliana" International Journal of Molecular Sciences 25, no. 14: 8001. https://doi.org/10.3390/ijms25148001

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