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High-throughput quantitative analysis of phytohormones in sorghum leaf and root tissue by ultra-performance liquid chromatography-mass spectrometry

  • Amy M. Sheflin
  • Jay S. Kirkwood
  • Lisa M. Wolfe
  • Courtney E. Jahn
  • Corey D. Broeckling
  • Daniel P. Schachtman
  • Jessica E. PrenniEmail author
Research Paper
Part of the following topical collections:
  1. Young Investigators in (Bio-)Analytical Chemistry

Abstract

Plant development, growth, and adaptation to stress are regulated by phytohormones, which can influence physiology even at low concentrations. Phytohormones are chemically grouped according to both structure and function as auxins, cytokinins, abscisic acid, jasmonates, salicylates, gibberellins, and brassinosteroids, among others. This chemical diversity and requirement for highly sensitive detection in complex matrices create unique challenges for comprehensive phytohormone analysis. Here, we present a robust and efficient quantitative UPLC-MS/MS assay for 17 phytohormones, including jasmonates, salicylates, abscisic acid, gibberellins, cytokinins, and auxins. Using this assay, 12 phytohormones were detected and quantified in sorghum plant tissue without the need for solid phase extraction (SPE) or liquid-liquid extraction. Variation of phytohormone profiles was explored in both root and leaf tissues between three genotypes, harvested at two different developmental time points. The results highlight the importance of tissue type, sampling time, and genetic factors when designing experiments that involve phytohormone analysis of sorghum. This research lays the groundwork for future studies, which can combine phytohormone profiling with other datasets such as transcriptome, soil microbiome, genome, and metabolome data, to provide important functional information about adaptation to stress and other environmental variables.

Keywords

Phytohormones LC-MS/MS Quantification Sorghum High-throughput 

Notes

Acknowledgements

We thank Stephen Kresovich for providing the sorghum seed grown in this field experiment.

Funding

This research was supported by the Office of Science (BER), US Department of Energy (DE-SC0014395).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

216_2019_1658_MOESM1_ESM.pdf (105 kb)
ESM 1 (PDF 105 kb)
216_2019_1658_MOESM2_ESM.xlsx (15 kb)
ESM 2 (XLSX 15.1 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Horticulture and Landscape ArchitectureColorado State UniversityFort CollinsUSA
  2. 2.Metabolomics Core FacilityUniversity of California, RiversideRiversideUSA
  3. 3.Proteomics and Metabolomics Core FacilityColorado State UniversityFort CollinsUSA
  4. 4.Department of Bioagricultural Sciences and Pest ManagementColorado State UniversityFort CollinsUSA
  5. 5.Department of Agronomy and HorticultureUniversity of Nebraska – LincolnLincolnUSA

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