The multigenic family of thioredoxin h in Arabidopsis thaliana: specific expression and stress response |
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| Affiliation: | 1. Evaluation and Research Center for Toxicology, Institute of Disease Control and Prevention, Academy of Military Medical Sciences, 20 Dongdajie Street, Fengtai District, Beijing 100071, PR China;2. Department of Toxicology, School of Public Health, Jilin University, 1163 Xin Min Street, Chaoyang District, Changchun 130021, PR China;1. Programa de Pós-Graduação em Biologia, Universidade do Vale do Rio dos Sinos – UNISINOS, São Leopoldo, RS 93022-000, Brazil;2. Instituto de Pesquisas de Planárias, Universidade do Vale do Rio dos Sinos – UNISINOS, São Leopoldo, RS 93022-000, Brazil;3. Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul - Campus Vacaria, Vacaria, RS 95200-000, Brazil;4. División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo (UNLP), Boulevard 120 & 61, B1900CHX, La Plata, Buenos Aires, Argentina;5. CONICET – Consejo Nacional de Investigaciones Científicas y Técnicas, La Plata, Buenos Aires, Argentina;1. Department of Mathematics, Vologda State University, S. Orlova 6, Vologda 160000, Russia;2. Institute of Mathematics, University of Silesia, Bankowa 14, PL-40-007 Katowice, Poland;1. Department of Pharmaceutical Sciences, Università degli Studi di Milano, via G. Colombo, 71, 20133, Milan, Italy;2. Law Firm Studio Legale Astolfi e Associati, Via Larga, 8, 20122, Milan, Italy |
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| Abstract: | In the model plant Arabidopsis thaliana, cytosolic thioredoxins h (TRXh) are encoded by a multigenic family of eight genes. Genomic studies have revealed that a number of these genes are duplicated genes originating from a common ancestor. This multiplicity of thioredoxin h genes raises questions of the specificity of plant thioredoxins and the function of such a large multigenic family in plant. The results from studies using northern blots, semi-quantitative RT-PCR and transgenic promoter–GUS fusions provide strong evidence that the members of the AtTRXh gene family show expression levels that vary among different plant organs. Moreover, distinct AtTRXh genes are induced in response to pathogenic elicitors. Together, our data suggest that the members of the multigenic family of AtTRXh may not have redundant functions. |
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