Reprogramming of Plant Central Metabolism in Response to Abiotic Stresses: A Metabolomics View

Abstract

Abiotic stresses rewire plant central metabolism to maintain metabolic and energy homeostasis. Metabolites involved in the plant central metabolic network serve as a hub for regulating carbon and energy metabolism under various stress conditions. In this review, we introduce recent metabolomics techniques used to investigate the dynamics of metabolic responses to abiotic stresses and analyze the trend of publications in this field. We provide an updated overview of the changing patterns in central metabolic pathways related to the metabolic responses to common stresses, including flooding, drought, cold, heat, and salinity. We extensively review the common and unique metabolic changes in central metabolism in response to major abiotic stresses. Finally, we discuss the challenges and some emerging insights in the future application of metabolomics to study plant responses to abiotic stresses.

Cysteine proteases are activated in sensitive Amaranthus palmeri populations upon treatment with herbicides inhibiting amino acid biosynthesis

“…Although there was a general increase of individual amino acids in treated sensitive plants, amino acids derived from oxaloacetate were the group most accumulated. Such specific accumulation has been reported after heat shock (Xu & Fu, 2022) or high temperatures (Yamakawa & Hakata, 2010). The concomitant increase of amino acid content and VPEs and PLCPs after herbicide treatments detected in this study suggest that cysteine proteases might be involved in protein degradation to provide plants with amino acids that cannot otherwise be synthesised due to herbicide inhibition.…”

Polyamine pathways interconnect with GABA metabolic processes to mediate the low-temperature response in plants

“…Plant metabolism responds sensitively and dynamically to low-temperature conditions ( Xu and Fu, 2022 ). With the exposure to temperature stress, plants have developed metabolic modifications that are essential features in response to cold stress ( Yadav, 2010 ; Xu and Fu, 2022 ).…”

“…Plant metabolism responds sensitively and dynamically to low-temperature conditions ( Xu and Fu, 2022 ). With the exposure to temperature stress, plants have developed metabolic modifications that are essential features in response to cold stress ( Yadav, 2010 ; Xu and Fu, 2022 ). Chilling and/or freezing modify the structure, metabolic properties, and functions of enzymes, as well as the properties of membrane metabolite transporters ( Kubien et al., 2003 ; Yadav, 2010 ), thereby leading to a diversion of the metabolic flux toward the synthesis of osmoprotectants, including soluble sugars, proline, and polyamines.…”

Does phenotyping of Hypericum secondary metabolism reveal a tolerance to biotic/abiotic stressors?

“…to temperature of 4°C for several days induced the processes typical for the cold acclimation ( Bruňáková et al., 2011 ; Petijová et al., 2014 ). Under cold acclimation, a major reprogramming of the transcriptome, proteome, and metabolome results in the accumulation of various cryoprotective substances like saccharides, saccharide alcohols, low-molecular weight nitrogenous compounds, amino acids including proline, cold-regulated (COR) proteins, antioxidant enzymes, polyamines, and polyphenolic metabolites, including several subgroups of flavonoids ( Fürtauer et al., 2019 ; Xu and Fu, 2022 ).…”