@article{fdi:010084666,
  title = {{EPIP} as an abscission promoting agent in the phytohormonal pathway},
  author = {{W}ilmowicz, {E}. and {K}ucko, {A}. and {T}ranbarger, {T}imothy and {O}strowski, {M}. and {N}iedojadlo, {J}. and {K}arwaszewski, {J}. and {K}apuscinska, {D}. and {P}anek, {K}.},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the mechanisms underlying the activation of the abscission zone ({AZ}) responsible for organ separation from plant body in crop species will help improve their yielding and economic importance. {S}pecial attention has been given recently to the role of the {INFLORESCENCE} {DEFICIENT} {IN} {ABSCISSION} protein, particularly its functional fragment, {EPIP} peptide. {I}ts stimulatory effect on abscission in different crops has been demonstrated. {R}ecently we described the role of {EPIP} in the redox, lipid, and pectin-related events taking place in {AZ} of {L}upinus luteus flowers, which undergo massive abscission in natural conditions. {T}o further examine {EPIP} contribution in {AZ} functioning, here, we analyze its impact on the ultrastructural changes, synthesis of two hormonal abscission stimulators - abscisic acid ({ABA}) and ethylene ({ET}), and the appearance of phosphoproteins. {A}s our results show, the response of flower {AZ} to exogenous {EPIP} involves the induction of distinct modifications related to the one hand with upregulation of cell activity but on the other hand degradation processes and possible autophagy. {F}urthermore, the {EPIP} stimulated biosynthesis pathways of {ABA} and {ET} precisely in {AZ} cells. {I}n addition, progressive phosphorylation of proteins has been observed under {EPIP} influence. {T}he highly accumulated ones were identified as those, related to primary metabolism and reactive oxygen species homeostasis, and their role in abscission has been discussed. {T}o summarizing, the presented detailed description of {EPIP} action in {AZ} cells in combination with our previous data offers new insights into its regulatory function and provides opportunities to counteract excessive flower abscission in lupine.},
  keywords = {{A}bscisic acid ; {A}bscission zone ; {EPIP} ; {E}thylene ; {F}lower abscission ; {INFLORESCENCE} {DEFICIENT} {IN} {ABSCISSION} ; {Y}ellow lupine},
  booktitle = {},
  journal = {{P}lant {P}hysiology and {B}iochemistry},
  volume = {178},
  numero = {},
  pages = {137--145},
  ISSN = {1873-2690},
  year = {2022},
  DOI = {10.1016/j.plaphy.2022.03.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084666},
}