Memorias de investigación
Communications at congresses:
Expression of dehydrin proteins from stone pine during water stress
Year:2014

Research Areas
  • Natural sciences and health sciences

Information
Abstract
Dehydrins are thought to play an essential role in the response, acclimation and tolerance to different abiotic stresses, such as cold and drought. Due to their putative functions in the response to stress, dehydrins have been often used as candidate genes in studies on population variability and local adaptation to environmental conditions, especially in Pinus pinaster or Pinus halepensis. However, little is still known regarding dehydrin gene family from the genetically depauperate Pinus pinea, a well-adapted conifer to the high temperatures and drought characteristic of Mediterranean climates. Based on the sequences corresponding to dehydrins described in previous work with pines we have isolated eight different dehydrins from stone pine. We have obtained their genomic and mRNA sequences and identified their intron/exon structure. We have also classified them according to their conserved segments in the deduced amino acid sequences, and predicted their secondary structure and disordered regions. Quantitative RT-PCR analysis of their expression pattern in needles, stems and roots during a severe and prolonged drought stress showed a severe increase of transcripts levels in six of them, especially when the water potential reach values around of -3MPa at 40 day without irrigation. Comparison between the expression patterns obtained in Pinus pinaster and Pinus pinea shows notable differences in levels of transcripts, especially in aerial parts where Pinus pinea shows remarkable higher inductions.
International
Si
Congress
5th International Conference on Mediterranean Pines (medpine5)
960
Place
Reviewers
Si
ISBN/ISSN
00-0000-000-0
Start Date
22/09/2014
End Date
26/09/2014
From page
77
To page
77
Book of abstracts
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Genética, Fisiología e Historia Forestal
  • Departamento: Sistemas y Recursos Naturales