Detecting early signs of heat and drought stress in Phoenix dactylifera (date palm)

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Safronov , O , Kreuzwieser , J , Haberer , G , Alyousif , M S , Schulze , W , Al-Harbi , N , Arab , L , Ache , P , Stempfl , T , Kruse , J , Mayer , K X , Hedrich , R , Rennenberg , H , Salojarvi , J & Kangasjarvi , J 2017 , ' Detecting early signs of heat and drought stress in Phoenix dactylifera (date palm) ' , PLoS One , vol. 12 , no. 6 , 0177883 . https://doi.org/10.1371/journal.pone.0177883

Title: Detecting early signs of heat and drought stress in Phoenix dactylifera (date palm)
Author: Safronov, Omid; Kreuzwieser, Juergen; Haberer, Georg; Alyousif, Mohamed S.; Schulze, Waltraud; Al-Harbi, Naif; Arab, Leila; Ache, Peter; Stempfl, Thomas; Kruse, Joerg; Mayer, Klaus X.; Hedrich, Rainer; Rennenberg, Heinz; Salojarvi, Jarkko; Kangasjarvi, Jaakko
Contributor: University of Helsinki, Bioinformatics for Molecular Biology and Genomics (BMBG)
University of Helsinki, Biosciences
University of Helsinki, Biosciences
Date: 2017-06-01
Language: eng
Number of pages: 17
Belongs to series: PLoS One
ISSN: 1932-6203
URI: http://hdl.handle.net/10138/206302
Abstract: Plants adapt to the environment by either long-term genome evolution or by acclimatization processes where the cellular processes and metabolism of the plant are adjusted within the existing potential in the genome. Here we studied the adaptation strategies in date palm, Phoenix dactylifera, under mild heat, drought and combined heat and drought by transcriptomic and metabolomic profiling. In transcriptomics data, combined heat and drought resembled heat response, whereas in metabolomics data it was more similar to drought. In both conditions, soluble carbohydrates, such as fucose, and glucose derivatives, were increased, suggesting a switch to carbohydrate metabolism and cell wall biogenesis. This result is consistent with the evidence from transcriptomics and cis-motif analysis. In addition, transcriptomics data showed transcriptional activation of genes related to reactive oxygen species in all three conditions (drought, heat, and combined heat and drought), suggesting increased activity of enzymatic antioxidant systems in cytosol, chloroplast and peroxisome. Finally, the genes that were differentially expressed in heat and combined heat and drought stresses were significantly enriched for circadian and diurnal rhythm motifs, suggesting new stress avoidance strategies.
Subject: TRANSCRIPTION FACTOR
GENE-EXPRESSION
ABIOTIC STRESS
CELL-DEATH
ARABIDOPSIS
PLANTS
GENOME
MECHANISMS
DEFENSE
PROLINE
1183 Plant biology, microbiology, virology
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