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Translationally Controlled Tumor Protein and Its Relationship with Responses of Plants to Abiotic Stresses

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Climate-Resilient Agriculture, Vol 2

Abstract

Food security and plant productivity can be affected by abiotic stresses, which are associated with substantial yield losses in several plant species including crops worldwide. Thus, there is great relevance in prospecting molecular components of plants. This includes proteins that are related to endogenous defense response mechanisms, to produce tolerant plants, and to provide insights into the complexity of molecular strategies in response to these stresses. The translationally controlled tumor protein (TCTP) is a protein family highly conserved in eukaryotic organisms, which has been associated with several roles at the cellular level, such as those related to growth, development and defense. Compared to the TCTP proteins from animals, the studies focused on plant TCTPs are still incipient. However, several studies have confirmed the importance of these proteins in plant development and tolerance against abiotic stresses. In addition, studies using TCTP proteins purified from plants have shown activities, such as molecular chaperone and antioxidant activity, potentially related to abiotic stress response. In this review, we summarize current knowledge about the intracellular localization of plant TCTPs and present several evidences regarding the role of TCTP in plant response to several abiotic factors, such as drought, salinity, cold, high temperature, and heavy metal stress. Here, functional analysis of TCTPs by heterologous expression in bacteria and transgenic plants, and differential gene expression analysis, as well as putative cis-acting regulatory elements potentially involved in the abiotic stress found in TCTP promoter genes regulated by phytohormones are presented.

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Acknowledgments

The corresponding author (Deyvid Novaes Marques) thanks Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP; grant numbers 2017/05544-0, 2018/20706-9, 2020/12666-7, and 2022/11018-7). Nicolle Louise Ferreira Barros thanks Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq; grant number 140586/2021-0).

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© 2023 The Author(s), under exclusive license to Springer Nature Switzerland AG

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Marques, D.N., Barros, N.L.F., de Souza, C.R.B. (2023). Translationally Controlled Tumor Protein and Its Relationship with Responses of Plants to Abiotic Stresses. In: Hasanuzzaman, M. (eds) Climate-Resilient Agriculture, Vol 2. Springer, Cham. https://doi.org/10.1007/978-3-031-37428-9_36

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