@article{fdi:010073675,
  title = {{A}rabidopsis pollen tube germination and growth depend on the mitochondrial calcium uniporter complex},
  author = {{S}elles, {B}enjamin and {M}ichaud, {C}aroline and {X}iong, {T}. {C}. and {L}eblanc, {O}livier and {I}ngouff, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he mitochondrial calcium uniporter complex ({MCU}c) was recently characterized in details in metazoans and consists of pore-forming units ({MCU}s) and regulatory factors that channel calcium ({C}a2+) ion into the mitochondria. {MCU}s participate in many stress and developmentally related processes involving {C}a2+. {A}lthough multiple homologues of {MCU}s and one regulatory subunit are usually present in plants, the first functional characterization and contribution to {C}a2+ related processes of these proteins have been reported recently. {H}ere, we focused on two predicted {A}rabidopsis {MCU}s and studied their role in the germination and the growth of pollen tube, a tip-growing cell type highly dependent on {C}a2+ homeostasis. {H}eterologous expression of {MCU}1 or {MCU}2 in yeast is sufficient to generate a mitochondrial {C}a2+ influx. {MCU}1 and {MCU}2 fluorescent reporters are co-expressed in the vegetative cell mitochondria of the pollen grain but are undetectable in the embryo sac. {W}e demonstrate that {MCU}1 and {MCU}2 can form a heterotypic complex. {P}henotypic analyses revealed an impaired pollen tube germination and growth in vitro only for the mcu2 mutants suggesting a predominant role of {MCU}2. {O}ur results show that mitochondrial {C}a2+ controlled by {MCU}s is an additional player in {A}rabidopsis pollen tube germination and growth.},
  keywords = {{A}rabidopsis ; calcium ; mitochondrial calcium uniporter ({MCU}) ; plant reproduction ; pollen tube ; tip-growth},
  booktitle = {},
  journal = {{N}ew {P}hytologist},
  volume = {219},
  numero = {1},
  pages = {58--65},
  ISSN = {0028-646{X}},
  year = {2018},
  DOI = {10.1111/nph.15189},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073675},
}