Plant sugar metabolism, transport and signalling in challenging environments

Nägele, Thomas; Gibon, Yves; Hir, Rozenn Le

doi:10.1111/ppl.13768

Cited by 6 publications

(4 citation statements)

References 47 publications

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“…Sugar and sugar metabolism play important roles in maintaining plant stability and responses to stress (Nägele et al, 2022). Sugar accumulation can effectively eliminate free hydroxyl radicals and protect cell membrane integrity (Nishizawa et al, 2008; Peshev et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Metabolomics Analyses Revealed the Key Metabolites and Pathways of Panax notoginseng under Heavy Drought Stress

Zhang,

Yang,

et al. 2024

Physiologia Plantarum

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Drought is the most common abiotic stress that hinders plantgrowth. To clarify the changes in the growth and metabolism of Panax notoginseng following drought stress, here the effects of drought stress on the growth and metabolism of P. notoginseng are investigated using gas chromatography–mass spectrometry based on a widely targeted metabolomic approach. We conducted drought stress treatments (DS) and re‐watering treatments after drought stress (RW) with no drought stress as the control group. The results showed that DS treatment significantly inhibited biomass accumulation and root development of P. notoginseng. Single saponin Rg1 and total saponin in the roots were the highest in the control group, while the total saponins in the leaves were the highest in DS. A total of 120 metabolites were identified using metabolomics and they were classified into eight categories. The metabolites of P. notoginseng under DS were significantly different from the control and RW treatment. Caffeic acid was significantly enriched in all comparison groups, suggesting its important role in the drought resistance of P. notoginseng. Enrichment analysis of differential metabolites showed that the ATP‐binding cassette (ABC) transporters, the metabolic pathway of valine, leucine, and isoleucine were closely associated with the drought resistance of P. notoginseng. We also verified that significantly upregulated differential metabolites such as 5‐aminolevulinic acid (5‐ALA) and quinic acid can enhance the drought resistance of P. notoginseng through exogenous application.

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Section: Discussionmentioning

confidence: 99%

Metabolomics Analyses Revealed the Key Metabolites and Pathways of Panax notoginseng under Heavy Drought Stress

Zhang,

Yang,

et al. 2024

Physiologia Plantarum

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“…Sugars are not only the energy source of plants but also important structural material components. Many kinds of sugars can also bind proteins to complex compounds (such as glycoproteins) and participate in cell recognition, intercellular material transport and other life activities, regulating plant growth and development ( Kanwar and Jha, 2019 ; Nägele et al., 2022 ). The common enrichment pathways for DRMs and DEGs were starch and sucrose metabolism; the citrate cycle; carbon fixation in photosynthetic organisms; and alanine, aspartate and glutamate metabolism ( Figures 5A, B ).…”

Section: Discussionmentioning

confidence: 99%

Comparison of the transcriptome and metabolome of wheat (Triticum aestivum L.) proteins content during grain formation provides insight

Shi,

Wang,

Wang

et al. 2024

Front. Plant Sci.

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IntroductionWheat is a food crop with a large global cultivation area, and the content and quality of wheat glutenin accumulation are important indicators of the quality of wheat flour.MethodsTo elucidate the gene expression regulation and metabolic characteristics related to the gluten content during wheat grain formation, transcriptomic and metabolomic analyses were performed for the high gluten content of the Xinchun 26 cultivar and the low proteins content of the Xinchun 34 cultivar at three periods (7 d, 14 d and 21 d) after flowering.ResultsTranscriptomic analysis revealed that 5573 unique differentially expressed genes (DEGs) were divided into two categories according to their expression patterns during the three periods. The metabolites detected were mainly divided into 12 classes. Lipid and lipid-like molecule levels and phenylpropanoid and polyketide levels were the highest, and the difference analysis revealed a total of 10 differentially regulated metabolites (DRMs) over the three periods. Joint analysis revealed that the DEGs and DRMs were significantly enriched in starch and sucrose metabolism; the citrate cycle; carbon fixation in photosynthetic organisms; and alanine, aspartate and glutamate metabolism pathways. The genes and contents of the sucrose and gluten synthesis pathways were analysed, and the correlation between gluten content and its related genes was calculated. Based on weighted correlation network analysis (WGCNA), by constructing a coexpression network, a total of 5 specific modules and 8 candidate genes that were strongly correlated with the three developmental stages of wheat grain were identified.DiscussionThis study provides new insights into the role of glutenin content in wheat grain formation and reveals potential regulatory pathways and candidate genes involved in this developmental process.

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“…Plant growth allocation can be seen as a balancing process between shoot and root, and rely on the underlying dynamics of the source‐sink balance (Li et al, 2022). Plant growth is mostly triggered when the primary assimilates in source leaves balance with the metabolic needs of sink tissues (Aluko et al, 2021; Nägele et al, 2022). In the source leaves, through photosynthesis, CO 2 can be efficiently assimilated into sugars, including glucose, fructose, sucrose, starch, and polyols (Dong & Beckles, 2019; Hennion et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Unveiling the mechanism of source‐sink rebalancing in cucumber‐pumpkin heterografts: the buffering roles of rootstock cotyledon

Pu,

Wen,

Sun

et al. 2024

Physiologia Plantarum

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Grafting onto pumpkin rootstock is widely applied in cucumber production to improve growth and yield, as well as to overcome soil‐borne diseases and enhance resistance to abiotic stresses. In this study, we constructed the cucumber‐pumpkin heterografts with the one‐cotyledon grafting method, and examined the effects of heterografting on biomass allocation and sugar partitioning, with cucumber and pumpkin self‐grafts used as control. Compared with cucumber self‐grafts, heterografting onto pumpkin rootstock promoted photosynthesis in cucumber scion, and led to higher sucrose contents in the 1st true leaf (source) and newly emerged leaf (sink). Thereby, the scion part of heterografts accumulated more biomass than cucumber self‐grafts. In contrast, when compared to pumpkin self‐grafts, grafting with cucumber scion reduced root vigor and biomass but promoted cotyledon growth in pumpkin rootstock. The roots (sink) of heterografts contained less sucrose and hexoses, and showed reduced sucrose synthase (SuSy) and hexokinase (HXK) activities. However, the rootstock cotyledon (source) contained more sucrose and starch, and showed higher activities of HXK, cell‐wall invertase (CWIN), and enzymes for starch synthesis and degradation. Furthermore, removal or shade of rootstock cotyledon led to reduced growth of root and scion. Silencing of CmoMEX1a gene in rootstock cotyledon inhibited maltose export and reduced root growth of heterografts. These results indicated that rootstock cotyledon, especially its starch content, played a buffering role in the growth regulation of cucumber‐pumpkin heterografts. Taken together, our results provided a major contribution to our understanding of source‐sink sugar partitioning and scion‐rootstock growth balancing in cucumber‐pumpkin heterografts.

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Plant sugar metabolism, transport and signalling in challenging environments

Cited by 6 publications

References 47 publications

Metabolomics Analyses Revealed the Key Metabolites and Pathways of Panax notoginseng under Heavy Drought Stress

Metabolomics Analyses Revealed the Key Metabolites and Pathways of Panax notoginseng under Heavy Drought Stress

Comparison of the transcriptome and metabolome of wheat (Triticum aestivum L.) proteins content during grain formation provides insight

Unveiling the mechanism of source‐sink rebalancing in cucumber‐pumpkin heterografts: the buffering roles of rootstock cotyledon

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