Abstract
Main conclusion
Understanding BEL transcription factors roles in potato and tomato varies considerably with little overlap. The review suggests reciprocal use of gained results to proceed with the knowledge in both crops
Abstract
The proper development of organs that plants use for reproduction, like fruits or tubers, is crucial for the survival and competitiveness of the species and thus subject to strict regulations. Interestingly, the controls of potato (Solanum tuberosum) tuber and tomato (S. lycopersicum) fruit development use common mechanisms, including the action of the BEL transcription factors (TFs). Although more than ten BEL genes have been identified in either genome, only a few of them have been characterized. The review summarizes knowledge of BEL TFs’ roles in these closely related Solanaceae species, focusing on those that are essential for tuberization in potato, namely StBEL5, StBEL11 and StBEL29, and for fruit development in tomato — SlBEL11, SlBL2 and SIBL4. Comprehension of the roles of individual BEL TFs, however, is not yet sufficient. Different levels of understanding of important characteristics are described, such as BEL transcript accumulation patterns, their mobility, BEL protein interaction with KNOX partners, subcellular localisation, and their target genes during initiation and development of the organs in question. A comparison of the knowledge on BEL TFs and their mechanisms of action in potato and tomato may provide inspiration for faster progress in the study of both models through the exchange of information and ideas. Both crops are extremely important for human nutrition. In addition, their production is likely to be threatened by the upcoming climate change, so there is a particular need for breeding using a deep knowledge of control mechanisms.
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Acknowledgements
The study was supported by the Charles University, Czech Republic, project GAUK No. 1308119. We also thank Prof. John D. Brooker for valuable text revisions and language corrections.
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AZ and JK contributed equally. AZ and JK compiled the literature, wrote the manuscript and composed the tables and figures. HL designed the outline of the article. PM designed the outline of the tables and figures, performed data analysis, restructured and edited the manuscript, completed the literature, and did final formatting. All authors read and approved the manuscript.
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Zounková, A., Konečný, J., Lipavská, H. et al. BEL transcription factors in prominent Solanaceae crops: the missing pieces of the jigsaw in plant development. Planta 259, 14 (2024). https://doi.org/10.1007/s00425-023-04289-8
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DOI: https://doi.org/10.1007/s00425-023-04289-8