@article{fdi:010054310,
  title = {{H}omeologous gene expression in response to growing temperature in a recent allopolyploid ({C}offea arabica {L}.)},
  author = {{C}ombes, {M}arie-{C}hristine and {C}enci, {A}lberto and {B}araille, {H}. and {B}ertrand, {B}. and {L}ashermes, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{A}llopolyploidy is considered as a major factor contributing to speciation, diversification, and plant ecological adaptation. {I}n particular, the expression of duplicate genes (homeologs) can be altered leading to functional plasticity and to phenotypic novelty. {T}his study investigated the influence of growing temperatures on homeologous gene expression in {C}offea arabica {L}., a recent allopolyploid involving 2 closely related diploid parental species. {T}he relative expression of homeologs of 13 genes all located in the same genomic region was analyzed using an {SNP} ratio quantification method based on dideoxy-terminated sequences of c{DNA} amplicons. {T}he relative expression of homeologous genes varied depending on the gene, the organ, and the growing condition. {N}evertheless, expression of both homeologs was always detected (i.e., no silencing). {A}lthough the growing conditions were suitable for one or other of the parental species, neither subgenome appeared preferentially expressed. {F}urthermore, relative homeologous expression showed moderate variations across organs and conditions and appeared uncorrelated between adjacent genes. {T}hese results indicate the absence of signs of subfunctionalization suggesting {C}. arabica has not undergone noticeable diploidization. {F}urthermore, these results suggest that the expression of homeologous genes in {C}. arabica is regulated by a shared trans-regulation mechanism acting similarly on the 2 subgenomes and that the observed biases in the relative homeolog expression may result from cis fine-scale factors.},
  keywords = {adaptation ; coffee ; duplicate gene expression ; introgression ; polyploidy ; transcription},
  booktitle = {},
  journal = {{J}ournal of {H}eredity},
  volume = {103},
  numero = {1},
  pages = {36--46},
  ISSN = {0022-1503},
  year = {2012},
  DOI = {10.1093/jhered/esr120},
  URL = {https://www.documentation.ird.fr/hor/fdi:010054310},
}