Physiology, gene expression, and metabolome of two wheat cultivars with contrasting submergence tolerance

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

DOI

  • Max Herzog, Univ Copenhagen, University of Copenhagen, Freshwater Biol Lab, Dept Biol
  • ,
  • Takeshi Fukao, Virginia Tech, Virginia Polytechnic Institute & State University, Dept Crop & Soil Environm Sci
  • ,
  • Anders Winkel, Univ Copenhagen, University of Copenhagen, Freshwater Biol Lab, Dept Biol
  • ,
  • Dennis Konnerup
  • Suman Lamichhane, Virginia Tech, Virginia Polytechnic Institute & State University, Dept Crop & Soil Environm Sci
  • ,
  • Jasper Benedict Alpuerto, Virginia Tech, Virginia Polytechnic Institute & State University, Dept Crop & Soil Environm Sci
  • ,
  • Harald Hasler-Sheetal, Univ Southern Denmark, University of Southern Denmark, Dept Biol, Nordcee, Univ Southern Denmark, University of Southern Denmark, VILLUM Ctr Bioanalyt Sci
  • ,
  • Ole Pedersen, The Freshwater Biological Laboratory, University of Copenhagen

Responses of wheat (Triticum aestivum) to complete submergence are not well understood as research has focused on waterlogging (soil flooding). The aim of this study was to characterize the responses of 2 wheat cultivars differing vastly in submergence tolerance to test if submergence tolerance was linked to shoot carbohydrate consumption as seen in rice. Eighteen-day-old wheat cultivars Frument (intolerant) and Jackson (tolerant) grown in soil were completely submerged for up to 19 days while assessing responses in physiology, gene expression, and shoot metabolome. Results revealed 50% mortality after 9.3 and 15.9 days of submergence in intolerant Frument and tolerant Jackson, respectively, and significantly higher growth in Jackson during recovery. Frument displayed faster leaf degradation as evident from leaf tissue porosity, chlorophyll a, and metabolomic fingerprinting. Surprisingly, shoot soluble carbohydrates, starch, and individual sugars declined to similarly low levels in both cultivars by day 5, showing that cultivar Jackson tolerated longer periods of low shoot carbohydrate levels than Frument. Moreover, intolerant Frument showed higher levels of phytol and the lipid peroxidation marker malondialdehyde relative to tolerant Jackson. Consequently, we propose to further investigate the role of ethylene sensitivity and deprivation of reactive O 2 species in submerged wheat.

Original languageEnglish
JournalPlant Cell and Environment
Volume41
Issue7
Pages (from-to)1632-1644
Number of pages13
ISSN0140-7791
DOIs
Publication statusPublished - 2018

    Research areas

  • flood tolerance, gene expression, metabolomics, shoot carbohydrates, submergence, Triticum aestivum, wheat, TRITICUM-AESTIVUM L, GAS FILM RETENTION, RICE ORYZA-SATIVA, WATERLOGGING TOLERANCE, FLOODING TOLERANCE, UNDERWATER PHOTOSYNTHESIS, INTERNAL AERATION, RUMEX-PALUSTRIS, RE-AERATION, PLANTS

See relations at Aarhus University Citationformats

ID: 135276801