@article{fdi:010078572, title = {{P}alm seed and fruit lipid composition : phylogenetic and ecological perspectives}, author = {{G}uerin, {C}. and {S}erret, {J}ulien and {M}ontufar, {R}. and {V}aissayre, {V}irgine and {B}astos-{S}iqueira, {A}ldecinei and {D}urand-{G}asselin, {T}. and {T}regear, {J}ames and {M}orcillo, {F}. and {D}ussert, {S}t{\'e}phane}, editor = {}, language = {{ENG}}, abstract = {{B}ackground and aims - {P}alms are vital to worldwide human nutrition, in particular as major sources of vege-table oils. {H}owever, our knowledge of seed and fruit lipid diversity in the family {A}recaceae is limited. {W}e therefore aimed to explore relationships between seed and fruit lipid content, fatty acid composition in the respective tissues, phylogenetic factors and biogeographical parameters. {M}ethods - {O}il content and fatty acid composition were characterized in seeds and fruits of 174 and 144 palmspecies respectively. {D}istribution, linear regression and multivariate analyses allowed an evaluation of the chemotaxonomic value of these traits and their potential relationship with ecological factors. {K}ey {R}esults - {A} considerable intra-family diversity for lipid traits was revealed. {S}pecies with the most lipid-richseeds belonged to the tribe {C}ocoseae, while species accumulating oil in the mesocarp occurred in all subfamilies and two-thirds of the tribes studied. {S}eed and fruit lipid contents were not correlated. {F}atty acid composition of mesocarp oil was highly variable within tribes. {B}y contrast, within-tribe diversity for seed lipid traits was low, whereas between-tribe variability was high. {C}onsequently, multivariate analyses of seed lipid traits produced groupings of species belonging to the same tribe. {M}edium-chain fatty acids predominated in seeds of most palm species, but they were also accumulated in the mesocarp in some cases. {S}eed unsaturated fatty acid content correl-ated with temperature at the coldest latitude of natural occurrence. {C}onclusion - {S}everal previously uncharacterized palms were identified as potential new sources of vegetable oils for comestible or non-food use. {S}eed lipid traits reflect genetic drift that occurred during the radiation of the family and therefore are highly relevant to palm chemotaxonomy. {O}ur data also suggest that seed unsaturated fatty acids may provide an adaptive advantage in the coldest environments colonized by palms by maintaining storage lipids in liquid form for efficient mobilization during germination.}, keywords = {{MONDE}}, booktitle = {}, journal = {{A}nnals of {B}otany}, volume = {125}, numero = {1}, pages = {157--172}, ISSN = {0305-7364}, year = {2020}, DOI = {10.1093/aob/mcz175}, URL = {https://www.documentation.ird.fr/hor/fdi:010078572}, }