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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Impacts of the overexpression of a tomato translationally controlled tumor protein (TCTP) in tobacco revealed by phenotypic and transcriptomic analysis

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Author(s):
de Carvalho, Marcio ; Acencio, Marcio Luis ; Nunes Laitz, Alessandra Vasconcellos ; de Araujo, Laura Migliorini ; Campos Arcuri, Mariana de Lara ; do Nascimento, Leandro Costa ; Maia, Ivan G.
Total Authors: 7
Document type: Journal article
Source: Plant Cell Reports; v. 36, n. 6, p. 887-900, JUN 2017.
Web of Science Citations: 2
Abstract

Key message Overexpression of a tomato TCTP impacts plant biomass production and performance under stress. These phenotypic alterations were associated with the up-regulation of genes mainly related to photosynthesis, fatty acid metabolism and water transport. The translationally controlled tumor protein (TCTP) is a multifaceted and highly conserved eukaryotic protein. In plants, despite the existence of functional data implicating this protein in cell proliferation and growth, the detailed physiological roles of many plant TCTPs remain poorly understood. Here we focused on a yet uncharacterized TCTP from tomato (SlTCTP). We show that, when overexpressed in tobacco, SlTCTP may promote plant biomass production and affect performance under salt and osmotic stress. Transcriptomic analysis of the transgenic plants revealed the up-regulation of genes mainly related to photosynthesis, fatty acid metabolism and water transport. This induced photosynthetic gene expression was paralleled by an increase in the photosynthetic rate and stomatal conductance of the transgenic plants. Moreover, the transcriptional modulation of genes involved in ABA-mediated regulation of stomatal movement was detected. On the other hand, genes playing a pivotal role in ethylene biosynthesis were found to be down-regulated in the transgenic lines, thus suggesting deregulated ethylene accumulation in these plants. Overall, these results point to a role of TCTP in photosynthesis and hormone signaling. (AU)

FAPESP's process: 11/17462-1 - Molecular characterization of the gene encoding TCTP (Translationally Controlled Tumor Protein) in tomato (Solanum lycopersicum cv Santa Clara)
Grantee:Laura Migliorini de Araujo
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 14/03241-1 - Characterization of laccase gene family of eucalyptus (E. grandis)
Grantee:Mariana de Lara Campos Arcuri
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 11/10309-3 - Investigation of the role of TCTP (translationally Controlled Tumour Protein) in plants using differential expression and production of plants expressing untranslatable transcripts
Grantee:Márcio de Carvalho
Support Opportunities: Scholarships in Brazil - Doctorate