@article{fdi:010083923,
  title = {{T}he acceleration of yellow lupine flower abscission by jasmonates is accompanied by lipid-related events in abscission zone cells},
  author = {{K}ucko, {A}. and {A}lch{\'e}, {J}. {D}. and {T}ranbarger, {T}imothy and {W}ilmowicz, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{Y}ellow lupine is an economically important crop. {T}his species has been used as a great model for abscission processes for several years due to extreme flower abortion, which takes place in the abscission zone ({AZ}). {AZ} activation involves modifications of cell walls, membranes, and cellular structure. {I}n this paper, we applied physiological, molecular, biochemical, and instrumental methods to explore lipid-associated changes and the possible involvement of lipid-derived phytohormones - jasmonates ({JA}s) -in flower {AZ} activation. {O}ur comprehensive analyses revealed that natural abscission is accompanied by the upregulation of peroxidase, which reflects a disruption of redox balance and/or lipids peroxidation in {AZ} cell membranes. {R}edox imbalance was confirmed by appearance of malondialdehyde. {L}ipid-related processes involved the specific localization and increased level and activity of lipase and {LOX}, enzymes associated with cell membrane rupture, and {JA} biosynthesis. {L}ipid-hydrolyzing phospholipase {D}, implicated previously in abscission, is also found in naturally active {AZ}s. {O}bserved changes are accompanied by the accumulation of jasmonates, both free jasmonic acid and its methyl ester. {T}he {JA} derivative exhibited higher biological activity than the nonconjugated form. {O}verall, our study shed new light on the lipid and phytohormonal regulation of {AZ} functioning supporting a role of {JA}s during abscission-associated events.},
  keywords = {abscission zone ; flower abscission ; jasmonates ; lipase ; lipoxygenase ; methyl jasmonate},
  booktitle = {},
  journal = {{P}lant {S}cience},
  volume = {316},
  numero = {},
  pages = {111173 [11 p.]},
  ISSN = {0168-9452},
  year = {2022},
  DOI = {10.1016/j.plantsci.2021.111173},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083923},
}