The adaptation strategies of Herpetospermum pedunculosum (Ser.) Baill at altitude gradient of the Tibetan plateau by physiological and metabolomic methods

BMC Genomics
Yong ZhaoFanjuan Meng

Abstract

Herpetospermum pedunculosum (Ser.) Baill is annual scandent herbs. They are used in the treatment of piles, inflammation of the stomach and the intestines. It can survive the extreme environment of the Tibetan Plateau (TP). However, the underlying mechanisms of this adaptation to H. pedunculosum from TP remain unclear. Here, we combined physiological and metabolomics methods to analyze H. pedunculosum response to altitude gradient differences. At high altitude, increases in the activities of Ascorbate peroxidase (APX), Glutathione reductase (GR), Dehydroascorbate reductase (DHAR), Monodehydroascorbate reductase (MDHAR), Superoxide dismutase (SOD) have been observed in leaves. Total Glutathion content, total Ascorbate content and the ASA (ascorbic acid)/docosahexaenoic acid (DHA) ration were highly elevated from low altitude to high altitude. In addition, high altitude induces decrease of the Anthocyanidin content (ANTH) and increase of abscisic acid content (ABA). The GC-MS analyses identified of 50 metabolites from leaves of H. pedunculosum. In addition, a metabolic network was constructed based on metabolomic datasets using a weighted correlation network analysis (WGCNA) approach. The network analysis uncovered 4 distinguishe...Continue Reading

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Citations

Jan 19, 2020·The Plant Journal : for Cell and Molecular Biology·Beatriz Fernández-MarínJorge Gago
Feb 23, 2020·Molecular Biology and Evolution·Katy MorganLeslie M Turner
Jun 25, 2020·Metabolomics : Official Journal of the Metabolomic Society·Manglesh KumariRajiv Kumar
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Juan I BurneoVladimir Morocho

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Methods Mentioned

BETA
environmental stress
MDA
AsA
scanning electron microscopy

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