@article{fdi:010088674, title = {{G}enetic analysis of the rice jasmonate receptors reveals specialized functions for {O}s{COI}2}, author = {{N}guyen, {H}. {T}. and {C}heaib, {M}. and {F}ournel, {M}arie and {R}ios, {M}aelle and {G}antet, {P}ascal and {L}aplaze, {L}aurent and {G}uyomarc'h, {S}. and {R}iemann, {M}. and {H}eitz, {T}. and {P}etitot, {A}nne-{S}ophie and {C}hampion, {A}ntony}, editor = {}, language = {{ENG}}, abstract = {{COI}1-mediated perception of jasmonate is critical for plant development and responses to environmental stresses. {M}onocots such as rice have two groups of {COI} genes due to gene duplication: {O}s{COI}1a and {O}s{COI}1b that are functionally equivalent to the dicotyledons {COI}1 and {O}s{COI}2 whose function remains unclear. {I}n order to assess the function of {O}s{COI}2 and its functional redundancy with {COI}1 genes, we developed a series of rice mutants in the 3 genes {O}s{COI}1a, {O}s{COI}1b and {O}s{COI}2 by {CRISPR} {C}as9-mediated editing and characterized their phenotype and responses to jasmonate. {C}haracterization of {O}s{COI}2 uncovered its important roles in root, leaf and flower development. {I}n particular, we show that crown root growth inhibition by jasmonate relies on {O}s{COI}2 and not on {O}s{COI}1a nor on {O}s{COI}1b, revealing a major function for the non-canonical {O}s{COI}2 in jasmonate-dependent control of rice root growth. {C}ollectively, these results point to a specialized function of {O}s{COI}2 in the regulation of plant development in rice and indicate that sub-functionalisation of jasmonate receptors has occurred in the monocot phylum.}, keywords = {}, booktitle = {}, journal = {{P}los {O}ne}, volume = {18}, numero = {9}, pages = {e0291385 [11 p.]}, ISSN = {1932-6203}, year = {2023}, DOI = {10.1371/journal.pone.0291385}, URL = {https://www.documentation.ird.fr/hor/fdi:010088674}, }