Abstract
The expansion of the oil palm in marginal areas can face challenges, such as water deficit, leading to an impact on palm oil production. A better understanding of the biological consequences of abiotic stresses on this crop can result from joint metabolic profiling and multivariate analysis. Metabolic profiling of leaves was performed from control and stressed plants (7 and 14 days of stress). Samples were extracted and analyzed on a UHPLC-ESI-Q-TOF-HRMS system. Acquired data were processed using XCMS Online and MetaboAnalyst for multivariate and pathway activity analysis. Metabolism was affected by drought stress through clear segregation between control and stressed groups. More importantly, metabolism changed through time, gradually from 7 to 14 days. The pathways most affected by drought stress were: starch and sucrose metabolism, glyoxylate and dicarboxylate metabolism, alanine, aspartate and glutamate metabolism, arginine and proline metabolism, and glycine, serine and threonine metabolism. The analysis of the metabolic profile were efficient to correlate and differentiate groups of oil palm plants submitted to different levels of drought stress. Putative compounds and their affected pathways can be used in future multiomics analysis.
Highlights
The expansion of the oil palm in marginal areas can face challenges, such as water deficit, leading to an impact on palm oil production
The current study derives from previous research activities on the characterization of the morphophysiological responses and analysis of differentially expressed genes of oil palm to drought stress[12]
Some results of these activities will be used in the future to corroborate and compare with the biochemistry of oil palm drought stress
Summary
The expansion of the oil palm in marginal areas can face challenges, such as water deficit, leading to an impact on palm oil production. The analysis of the metabolic profile were efficient to correlate and differentiate groups of oil palm plants submitted to different levels of drought stress. Palm oil, derived from the African Oil Palm (Elaeis guineensis Jacq.), is the most consumed edible oil in the This crop is highly dependent on water availability; drought stress could represent a high risk on the production yield. In the few decades, the population growth and subsequently vegetable oil demands could lead to the unforeseen expansion of palm tree crops. Limiting factors such as abiotic stresses are present in most potential farmable areas[12]. Drought stress induces the production and activation of compounds that modulate certain metabolites and pathways, e.g., cell h
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