Spatially Resolved Metabolomics and Lipidomics Reveal Salinity and Drought-Tolerant Mechanisms of Cottonseeds

Bingbing Liu, Xiaoxiao Wang, Kun Li, Zongwei Cai*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

34 Citations (Scopus)

Abstract

In the current era of global climate change, environmental stresses, especially drought and salt, have impaired the growth and productivity of crops, e.g., cotton. Understanding the mechanisms of plants' adaptation to these abiotic stresses is crucial to breed stress-tolerant crop species. In the present study, integrated metabolomics, lipidomics, and mass spectrometry imaging (MSI) were used to discover the spatial distribution of differential metabolites and lipids in two cottonseed cultivars with contrasting drought and salt tolerance properties. Seventeen differential metabolites and 125 differential lipids were identified. Their possible roles in augmenting stress tolerance were illustrated, which were involved in reactive oxygen species scavenging, osmotic adjustment, and cell membrane structure reconstruction. MSI analysis provided a visualization of nine differential lipids and four differential metabolites in cottonseeds with varied abundances and distributions. The results may help understand cottonseeds' convictive metabolic and lipidomic regulatory networks in coping with salinity and drought stresses and give new insights into the stress-tolerance traits relevant to other crops.

Original languageEnglish
Pages (from-to)8028-8037
Number of pages10
JournalJournal of Agricultural and Food Chemistry
Volume69
Issue number28
Early online date12 Jul 2021
DOIs
Publication statusPublished - 21 Jul 2021

Scopus Subject Areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

User-Defined Keywords

  • cottonseeds
  • drought tolerance
  • lipidomics
  • mass spectrometry imaging
  • metabolomics
  • salinity tolerance

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