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• Betti, M
• Pérez-Delgado, C
• García-Calderón, M
• Díaz, P
• Monza, J
• Márquez, AJ.
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• Betti, M
• Pérez-Delgado, C
• García-Calderón, M
• Díaz, P
• Monza, J
• Márquez, AJ.
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• Betti, M
• Pérez-Delgado, C
• García-Calderón, M
• Díaz, P
• Monza, J
• Márquez, AJ.

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Cells 2012, 1(4), 1089-1106; doi:10.3390/cells1041089

Article

Cellular Stress Following Water Deprivation in the Model Legume Lotus japonicus

Marco Betti ^1,* , Carmen Pérez-Delgado ¹ , Margarita García-Calderón ¹ , Pedro Díaz ² , Jorge Monza ²  and Antonio J. Márquez ¹

¹ Department of Vegetal Biochemistry and Molecular Biology, Chemistry Faculty, University of Seville, Apartado 1203, 41071-Sevilla, Spain ² Biochemistry Laboratory, Department of Vegetal Biology, Agronomy Faculty, Av. E. Garzón 780, CP 12900 Montevideo, Uruguay

* Author to whom correspondence should be addressed.

Received: 1 August 2012; in revised form: 9 November 2012 / Accepted: 9 November 2012 / Published: 13 November 2012

(This article belongs to the Special Issue Cellular Stress Response)

Download PDF Full-Text [382 KB, uploaded 13 November 2012 11:12 CET]

Abstract: Drought stress is one of the most important factors in the limitation of plant productivity worldwide. In order to cope with water deprivation, plants have adopted several strategies that produce major changes in gene expression. In this paper, the response to drought stress in the model legume Lotus japonicus was studied using a transcriptomic approach. Drought induced an extensive reprogramming of the transcriptome as related to various aspects of cellular metabolism, including genes involved in photosynthesis, amino acid metabolism and cell wall metabolism, among others. A particular focus was made on the genes involved in the cellular stress response. Key genes involved in the control of the cell cycle, antioxidant defense and stress signaling, were modulated as a consequence of water deprivation. Genes belonging to different families of transcription factors were also highly responsive to stress. Several of them were homologies to known stress-responsive genes from the model plant Arabidopsis thaliana, while some novel transcription factors were peculiar to the L. japonicus drought stress response.

Keywords: drought stress; Lotus japonicus; transcriptomics; cellular stress response; reactive oxygen species; transcription factors

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