Plant Molecular Biology Reporter

, Volume 34, Issue 2, pp 410–426

Characterization of Molecular and Physiological Responses Under Water Deficit of Genetically Modified Soybean Plants Overexpressing the AtAREB1 Transcription Factor

  • Juliane Prela Marinho
  • Norihito Kanamori
  • Leonardo Cesar Ferreira
  • Renata Fuganti-Pagliarini
  • Josirley de Fátima Corrêa Carvalho
  • Rafaela Alves Freitas
  • Silvana Regina Rockenbach Marin
  • Fabiana Aparecida Rodrigues
  • Liliane Márcia Mertz-Henning
  • José Renato Bouças Farias
  • Norman Neumaier
  • Maria Cristina Neves de Oliveira
  • Francismar Corrêa Marcelino-Guimarães
  • Takuya Yoshida
  • Yasunari Fujita
  • Kazuko Yamaguchi-Shinozaki
  • Kazuo Nakashima
  • Alexandre Lima Nepomuceno
Original Paper

DOI: 10.1007/s11105-015-0928-0

Cite this article as:
Marinho, J.P., Kanamori, N., Ferreira, L.C. et al. Plant Mol Biol Rep (2016) 34: 410. doi:10.1007/s11105-015-0928-0

Abstract

Drought is one of the major factors limiting crop productivity worldwide. Currently, the techniques of genetic engineering are powerful tools for the development of drought-tolerant plants, once they allow for the modification of expression patterns of genes responsive to drought. Within this context, transcription factors recognize specific DNA sequences in the regulatory region of target genes, and thereby regulate their expression. AREB is a transcription factor in the basic leucine zipper family, which binds to the ABRE element in the promoter region of genes induced by abscisic acid and drought. In this study, soybean plants transformed with the 35S:AtAREB1 construct were submitted to drought under greenhouse conditions. AtAREB1 expression was observed in the transgenic lines 1Ea2939 and 1Eb2889, but not in the event 1Ea15 and, under control of the CaMV 35S promoter, did not cause dwarfism and resulted in a higher survival rate of transformed plants after drought and rehydration. Moreover, 1Ea2939 and 1Eb2889 plants presented a greater total number of pods and seeds and increased dry matter content of seeds. The best performance of the transgenic lines 1Ea2939 and 1Eb2889 relative to BR 16 plants (wild type) and to event 1Ea15 might be related to mechanisms of drought prevention through reduced stomatal conductance and leaf transpiration under control conditions. Changes in the expression profile of phosphatases and kinases may also be involved. Such results suggest that the constitutive overexpression of the transcription factor AtAREB1 leads to an improved capacity of the soybean crop to cope with drought with no yield losses.

Keywords

Abscisic acid AREB1 transcription factor Glycine max L. Merrill Stomatal conductance Water scarcity Survival rate 

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Juliane Prela Marinho
    • 1
    • 2
  • Norihito Kanamori
    • 3
  • Leonardo Cesar Ferreira
    • 2
  • Renata Fuganti-Pagliarini
    • 2
  • Josirley de Fátima Corrêa Carvalho
    • 2
  • Rafaela Alves Freitas
    • 2
    • 4
  • Silvana Regina Rockenbach Marin
    • 1
    • 2
  • Fabiana Aparecida Rodrigues
    • 2
  • Liliane Márcia Mertz-Henning
    • 2
  • José Renato Bouças Farias
    • 2
  • Norman Neumaier
    • 2
  • Maria Cristina Neves de Oliveira
    • 2
  • Francismar Corrêa Marcelino-Guimarães
    • 2
  • Takuya Yoshida
    • 5
  • Yasunari Fujita
    • 3
  • Kazuko Yamaguchi-Shinozaki
    • 5
  • Kazuo Nakashima
    • 3
  • Alexandre Lima Nepomuceno
    • 2
  1. 1.Londrina State University—Biological Sciences CenterLondrinaBrazil
  2. 2.Embrapa SoybeanLondrinaBrazil
  3. 3.Japan International Research Center for Agricultural SciencesTsukubaJapan
  4. 4.“Luiz Meneghel” CampusNorthern Paraná State UniversityBandeirantesBrazil
  5. 5.Laboratory of Plant Molecular PhysiologyTokyo UniversityTokyoJapan

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