@article{fdi:010069977, title = {{T}ranscriptome analysis of cell wall and {NAC} domain transcription factor genes during {E}laeis guineensis fruit ripening : evidence for widespread conservation within monocot and eudicot lineages}, author = {{T}ranbarger, {T}imothy and {F}ooyontphanich, {K}. and {R}oongsattham, {P}. and {P}izot, {M}. and {C}ollin, {M}yriam and {J}antasuriyarat, {C}. and {S}uraninpong, {P}. and {T}ragoonrung, {S}. and {D}ussert, {S}t{\'e}phane and {V}erdeil, {J}. {L}. and {M}orcillo, {F}.}, editor = {}, language = {{ENG}}, abstract = {{T}he oil palm ({E}laeis guineensis), a monocotyledonous species in the family {A}recaceae, has an extraordinarily oil rich fleshy mesocarp, and presents an original model to examine the ripening processes and regulation in this particular monocot fruit. {H}istochemical analysis and cell parameter measurements revealed cell wall and middle lamella expansion and degradation during ripening and in response to ethylene. {C}ell wall related transcript profiles suggest a transition from synthesis to degradation is under transcriptional control during ripening, in particular a switch from cellulose, hemicellulose, and pectin synthesis to hydrolysis and degradation. {T}he data provide evidence for the transcriptional activation of expansin, polygalacturonase, mannosidase, beta-galactosidase, and xyloglucan endotransglucosylase/hydrolase proteins in the ripening oil palm mesocarp, suggesting widespread conservation of these activities during ripening for monocotyledonous and eudicotyledonous fruit types. {P}rofiling of the most abundant oil palm polygalacturonase ({E}g{PG}4) and 1-aminocyclopropane-1-carboxylic acid oxidase ({AGO}) transcripts during development and in response to ethylene demonstrated both are sensitive markers of ethylene production and inducible gene expression during mesocarp ripening, and provide evidence for a conserved regulatory module between ethylene and cell wall pectin degradation. {A} comprehensive analysis of {NAG} transcription factors confirmed at least 10 transcripts from diverse {NAC} domain clades are expressed in the mesocarp during ripening, four of which are induced by ethylene treatment, with the two most inducible ({E}g{NAC}6 and {E}g{NAC}7) phylogenetically similar to the tomato {NAG}-{NOR} master-ripening regulator. {O}verall, the results provide evidence that despite the phylogenetic distance of the oil palm within the family {A}recaceae from the most extensively studied monocot banana fruit, it appears ripening of divergent monocot and eudicot fruit lineages are regulated by evolutionarily conserved molecular physiological processes.}, keywords = {ripening ; cell wall ; {NAC} domain ; oil palm ; monocotyledon ; mesocarp ; ethylene}, booktitle = {}, journal = {{F}rontiers in {P}lant {S}cience}, volume = {8}, numero = {}, pages = {art. 603 [12 p.]}, ISSN = {1664-462{X}}, year = {2017}, DOI = {10.3389/fpls.2017.00603}, URL = {https://www.documentation.ird.fr/hor/fdi:010069977}, }