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  • Pires, Marcel V.Universidade Federal de Vicosa,Federal University of Viçosa,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)

The influence of alternative pathways of respiration that utilize branched-chain amino acids following water shortage in Arabidopsis

  • Article/chapterEnglish2016

Publisher, publication year, extent ...

  • 2016-03-03
  • Wiley,2016
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:dcd41674-f722-49d7-94d2-eafa020562ad
  • https://doi.org/10.1111/pce.12682DOI
  • https://research.chalmers.se/publication/239278URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • During dark-induced senescence isovaleryl-CoA dehydrogenase (IVDH) and D-2-hydroxyglutarate dehydrogenase (D-2HGDH) act as alternate electron donors to the ubiquinol pool via the electron-transfer flavoprotein/electron-transfer flavoprotein:ubiquinone oxidoreductase (ETF/ETFQO) pathway. However, the role of this pathway in response to other stresses still remains unclear. Here, we demonstrated that this alternative pathway is associated with tolerance to drought in Arabidopsis. In comparison with wild type (WT) and lines overexpressing D-2GHDH, loss-of-function etfqo-1, d2hgdh-2 and ivdh-1 mutants displayed compromised respiration rates and were more sensitive to drought. Our results demonstrated that an operational ETF/ETFQO pathway is associated with plants' ability to withstand drought and to recover growth once water becomes replete. Drought-induced metabolic reprogramming resulted in an increase in tricarboxylic acid (TCA) cycle intermediates and total amino acid levels, as well as decreases in protein, starch and nitrate contents. The enhanced levels of the branched-chain amino acids in loss-of-function mutants appear to be related to their increased utilization as substrates for the TCA cycle under water stress. Our results thus show that mitochondrial metabolism is highly active during drought stress responses and provide support for a role of alternative respiratory pathways within this response.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Pereira Júnior, Adilson A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Medeiros, David B.Universidade Federal de Vicosa,Federal University of Viçosa (author)
  • Daloso, Danilo M.Universidade Federal de Vicosa,Federal University of Viçosa,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Pham, Phuong AnhMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Barros, Kallyne A.Universidade Federal de Vicosa,Federal University of Viçosa (author)
  • Engqvist, Martin,1983Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)marengq (author)
  • Florian, A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Krahnert, InaMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Maurino, V. G.Heinrich Heine Universität Düsseldorf,Heinrich Heine University Düsseldorf (author)
  • Araújo, Wagner L.Universidade Federal de Vicosa,Federal University of Viçosa (author)
  • Fernie, A. R.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Universidade Federal de VicosaMax Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG) (creator_code:org_t)

Related titles

  • In:Plant, Cell and Environment: Wiley39:6, s. 1304-13191365-30400140-7791

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