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Publication Type J
Authors Panda, A., J. Rangani and A. K. Parida
Title Unraveling salt responsive metabolites and metabolic pathways using non-targeted metabolomics approach and elucidation of salt tolerance mechanisms in the xero-halophyte Haloxylon salicornicum
Source Plant Physiology and Biochemistry
Author Keywords Amino acids Energy metabolism Jasmonic acid Metabolomics Osmoregulation TCA cycle salinity tolerance salicylic-acid stress arabidopsis adaptation reveals roles accumulation glycerol proline
Abstract Haloxylon salicornicum is a xero-halophyte growing in saline and arid regions of the world. Metabolite profiling was carried out in shoot of both control and salinity treated (400 mM NaCl) samples by GC-QTOF-MS and HPLC-DAD analysis to decipher the salinity tolerance mechanism in this xero-halophyte. The present study investigates the alteration in metabolite profile of H. salicornicum that support the salinity tolerance of the plant. The metabolomic analysis of H. salicornicum shoot identified 56 metabolites, of which 47 metabolites were significantly changed in response to salinity. These metabolites were mainly included in the category of amino acids, organic acids, amines, sugar alcohols, sugars, fatty acids, alkaloids, and phytohormones. In response to salinity, most of the amino acids were down-regulated except alanine, phenylalanine, lysine, and tyramine, which were up-regulated in H. salicornicum. In contrast to amino acids, most sugars and organic acids were up-regulated in response to salinity. Correlation and pathway enrichment analysis identified important biological pathways playing significant roles in conferring salt tolerance of H. salicornicum. These biological pathways include amino sugar and nucleotide sugar metabolism, citrate cycle (TCA cycle), starch and sucrose metabolism, phenylalanine metabolism, cysteine, methionine, glycine, serine, and threonine metabolism, etc. The data presented here suggest that the modulations of various metabolic pathways facilitate H. salicornicum to survive and grow optimally even under high salinity condition. This study offers comprehensive information on metabolic adaptations and overall salt tolerance mechanisms in H. salicornicum. The information gained through this study will provide guidance to plant breeders and molecular biologists to develop salinity tolerant crop varieties.
Author Address [Panda, Ashok; Rangani, Jaykumar; Parida, Asish Kumar] CSIR Cent Salt & Marine Chem Res Inst CSIR CSMCRI, Plant Omics Div, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India. [Panda, Ashok; Rangani, Jaykumar; Parida, Asish Kumar] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India. Parida, AK (corresponding author), CSIR Cent Salt & Marine Chem Res Inst CSIR CSMCRI, Plant Omics Div, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India. asishparida@csmcri.res.in
ISSN 0981-9428
ISBN 0981-9428
29-Character Source Abbreviation Plant Physiol. Biochem.
Publication Date Jan
Year Published 2021
Volume 158
Beginning Page 284-296
Digital Object Identifier (DOI) 10.1016/j.plaphy.2020.11.012
Unique Article Identifier WOS:000599299700026
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