@article{fdi:010066841, title = {{A} novel role for the root cap in phosphate uptake and homeostasis}, author = {{K}anno, {S}. and {A}rrighi, {J}ean-{F}ran{\c{c}}ois and {C}hiarenza, {S}. and {B}ayle, {V}. and {B}ethome, {R}. and {P}eret, {B}. and {J}avot, {H}. and {D}elannoy, {E}. and {M}arin, {E}. and {N}akanishi, {T}. {M}. and {T}hibaud, {M}. {C}. and {N}ussaume, {L}.}, editor = {}, language = {{ENG}}, abstract = {{T}he root cap has a fundamental role in sensing environmental cues as well as regulating root growth via altered meristem activity. {D}espite this well-established role in the control of developmental processes in roots, the root cap's function in nutrition remains obscure. {H}ere, we uncover its role in phosphate nutrition by targeted cellular inactivation or phosphate transport complementation in {A}rabidopsis, using a transactivation strategy with an innovative high-resolution real-time {P}-33 imaging technique. {R}emarkably, the diminutive size of the root cap cells at the root-to-soil exchange surface accounts for a significant amount of the total seedling phosphate uptake (approximately 20%). {T}his level of {P}i absorption is sufficient for shoot biomass production (up to a 180% gain in soil), as well as repression of {P}i starvation-induced genes. {T}hese results extend our understanding of this important tissue from its previously described roles in environmental perception to novel functions in mineral nutrition and homeostasis control.}, keywords = {}, booktitle = {}, journal = {e{L}ife}, volume = {5}, numero = {}, pages = {e14577 [16 p.]}, ISSN = {2050-084{X}}, year = {2016}, DOI = {10.7554/e{L}ife.14577}, URL = {https://www.documentation.ird.fr/hor/fdi:010066841}, }