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@ARTICLE{Pfaff:878346,
      author       = {Pfaff, Julia and Denton, Alisandra K. and Usadel, Björn
                      and Pfaff, Christian},
      title        = {{P}hosphate starvation causes different stress responses in
                      the lipid metabolism of tomato leaves and roots},
      journal      = {Biochimica et biophysica acta / Molecular and cell biology
                      of lipids Molecular and cell biology of lipids},
      volume       = {1865},
      number       = {9},
      issn         = {1388-1981},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {FZJ-2020-02794},
      pages        = {158763 -},
      year         = {2020},
      abstract     = {Plants have evolved various acclimation responses to cope
                      with phosphate depletion, including several changes in lipid
                      metabolism. Thereby membrane phospholipids are
                      dephosphorylated and can be used as an internal phosphate
                      source, while galactolipids are incorporated into the
                      membrane to maintain membrane functionality. Still little is
                      known about the lipidomic and transcriptomic response of
                      plants other than Arabidopsis thaliana upon phosphate
                      starvation. Therefore, we employed lipidomics and
                      transcriptomics to characterize the phosphate starvation
                      response of lipid metabolism in tomato leaves and
                      roots.Overall, phospholipid levels decreased and
                      galactolipids increased during the acclimation response. In
                      addition, an early increase of triacylglycerol was observed.
                      Interestingly, there were major differences in the
                      acclimation response of tomato leaves and roots: leaves
                      mainly accumulated polyunsaturated triacylglycerol, while
                      roots showed a massive increase in galactolipid content. In
                      line with these results, we observed transcriptional
                      induction of phospholipid degradation and galactolipid
                      synthesis pathways in both analyzed tissues. In contrast,
                      other aspects of the transcriptional response, in
                      particular, the induction of phospholipid degradation,
                      ER-localized fatty acid desaturation and triacylglycerol
                      assembly differed between tomato leaves and roots.These
                      results suggest a different modulation of degraded
                      phospholipids toward triacylglycerols and galactolipids in
                      phosphate-starved tomato leaves and roots. Possibly the
                      availability and composition of acyl-CoA pools and
                      ER-derived precursors trigger the synthesis of
                      triacylglycerols or galactolipids. As the mechanism of
                      triacylglycerol accumulation is poorly characterized outside
                      of seed oil formation, these findings enhance our
                      understanding of the phosphate starvation response and of
                      how storage lipids accumulate under stress in vegetative
                      tissue. Previous article in issue},
      cin          = {IBG-4},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-4-20200403},
      pnm          = {582 - Plant Science (POF3-582) / 583 - Innovative
                      Synergisms (POF3-583)},
      pid          = {G:(DE-HGF)POF3-582 / G:(DE-HGF)POF3-583},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32645408},
      UT           = {WOS:000552710900023},
      doi          = {10.1016/j.bbalip.2020.158763},
      url          = {https://juser.fz-juelich.de/record/878346},
}