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High night temperature strongly impacts TCA cycle, amino acid and polyamine biosynthetic pathways in rice in a sensitivity-dependent manner.

Glaubitz U, Erban A, Kopka J, Hincha DK, Zuther E - J. Exp. Bot. (2015)

Bottom Line: Increased expression levels of ADC2 and ODC1, genes encoding enzymes catalysing the first committed steps of putrescine biosynthesis, were restricted to sensitive cultivars under HNT.Additionally, transcript levels of eight polyamine biosynthesis genes were correlated with HNT sensitivity.Responses to HNT in the vegetative stage result in distinct differences between differently responding cultivars with a dysregulation of central metabolism and an increase of polyamine biosynthesis restricted to sensitive cultivars under HNT conditions and a pre-adaptation of tolerant cultivars already under control conditions with higher levels of potentially protective compatible solutes.

View Article: PubMed Central - PubMed

Affiliation: Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, D-14476 Potsdam, Germany.

No MeSH data available.


Related in: MedlinePlus

Heat map with significant Spearman correlation coefficients (  p<0.01) between metabolite levels and HNT sensitivity (expressed as the sensitivity rank determined from chlorosis estimates (Glaubitz et al., 2014) under control and HNT conditions as well as for the log2 fold change in metabolite content between both conditions. Red depicts positive, blue negative correlations. Metabolites and analytes are sorted alphabetically.
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Figure 3: Heat map with significant Spearman correlation coefficients (  p<0.01) between metabolite levels and HNT sensitivity (expressed as the sensitivity rank determined from chlorosis estimates (Glaubitz et al., 2014) under control and HNT conditions as well as for the log2 fold change in metabolite content between both conditions. Red depicts positive, blue negative correlations. Metabolites and analytes are sorted alphabetically.

Mentions: To identify metabolites that may be related to HNT sensitivity, a Spearman’s rank order correlation analysis of metabolite pool sizes with HNT sensitivity was conducted (Fig. 3; Supplementary Table S4). HNT sensitivity is expressed as a rank determined by leaf chlorosis estimates, with high ranks representing HNT sensitivity (Glaubitz et al., 2014). Therefore, positive correlations between metabolite levels and rank indicate high metabolite levels in sensitive and low levels in tolerant cultivars, while negative correlations reflect the opposite relationship.


High night temperature strongly impacts TCA cycle, amino acid and polyamine biosynthetic pathways in rice in a sensitivity-dependent manner.

Glaubitz U, Erban A, Kopka J, Hincha DK, Zuther E - J. Exp. Bot. (2015)

Heat map with significant Spearman correlation coefficients (  p<0.01) between metabolite levels and HNT sensitivity (expressed as the sensitivity rank determined from chlorosis estimates (Glaubitz et al., 2014) under control and HNT conditions as well as for the log2 fold change in metabolite content between both conditions. Red depicts positive, blue negative correlations. Metabolites and analytes are sorted alphabetically.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4588888&req=5

Figure 3: Heat map with significant Spearman correlation coefficients (  p<0.01) between metabolite levels and HNT sensitivity (expressed as the sensitivity rank determined from chlorosis estimates (Glaubitz et al., 2014) under control and HNT conditions as well as for the log2 fold change in metabolite content between both conditions. Red depicts positive, blue negative correlations. Metabolites and analytes are sorted alphabetically.
Mentions: To identify metabolites that may be related to HNT sensitivity, a Spearman’s rank order correlation analysis of metabolite pool sizes with HNT sensitivity was conducted (Fig. 3; Supplementary Table S4). HNT sensitivity is expressed as a rank determined by leaf chlorosis estimates, with high ranks representing HNT sensitivity (Glaubitz et al., 2014). Therefore, positive correlations between metabolite levels and rank indicate high metabolite levels in sensitive and low levels in tolerant cultivars, while negative correlations reflect the opposite relationship.

Bottom Line: Increased expression levels of ADC2 and ODC1, genes encoding enzymes catalysing the first committed steps of putrescine biosynthesis, were restricted to sensitive cultivars under HNT.Additionally, transcript levels of eight polyamine biosynthesis genes were correlated with HNT sensitivity.Responses to HNT in the vegetative stage result in distinct differences between differently responding cultivars with a dysregulation of central metabolism and an increase of polyamine biosynthesis restricted to sensitive cultivars under HNT conditions and a pre-adaptation of tolerant cultivars already under control conditions with higher levels of potentially protective compatible solutes.

View Article: PubMed Central - PubMed

Affiliation: Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, D-14476 Potsdam, Germany.

No MeSH data available.


Related in: MedlinePlus