@article{fdi:010064762,
  title = {{I}mpact of the laurina mutation in {C}offea arabica {L}. on semi-dwarfism, cell number and hormonal profiles in hypocotyls of seedlings growing under daylight},
  author = {{A}dler, {S}. and {V}erdeil, {J}. {L}. and {C}onejero, {G}. and {Z}aharia, {I}. {L}. and {S}arrazin, {A}. and {H}oareau, {J}. and {F}ock-{B}astide, {I}. and {N}oirot, {M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{H}ypocotyl semi-dwarfism in {BP} was only due to less cell number. {D}aylight was required to inhibit cell division in the mutant. {ABA}, {IAA} and cytokinins would be involved. {C}offea arabica '{L}aurina' is a natural mutant of {C}offea arabica '{B}ourbon' ({B}) and is known under the trade name '{B}ourbon {P}ointu' ({BP}). {U}nder daylight, the laurina mutation leads to pleiotropic effects, including semi-dwarf hypocotyls. {A}t the opposite, semi-dwarfism of {BP} seedlings disappeared under darkness conditions. {T}he first step was to describe the morphological impact of the mutation in seedlings growing under daylight by comparison with seedlings growing under darkness. {A}s the hypocotyl length was mainly affected, the second step was to investigate histological modifications in the organ comparing {B} and {BP} seedlings growing under daylight. {R}esult of this investigation indicated that the mutation does not impact on cell length. {M}oreover, cytometry analyses showed absence of endoreduplication. {A}ctually, the mutation influenced the cell number and this effect appeared before the 40th day after sowing. {T}he length difference of hypocotyls between {B} and {BP} was due to lower cell number in {BP}, indicating possible involvement of phytohormones. {I}nvestigations showed the decrease of cytokinin and auxin levels in {BP} compared to {B}, while the cytokinin/auxin ratio remained constant in both varieties. {B}y contrast, abscisic acid content increased in {BP}. {C}oncurrently these results indicate the lowering of cell division, due to the mutation.},
  keywords = {{C}offea arabica '{L}aurina' ; {H}ypocotyl semi-dwarfism ; {C}ell division ; {A}uxin ; {C}ytokinin ; {A}bscisic acid},
  booktitle = {},
  journal = {{T}rees-{S}tructure and {F}unction},
  volume = {29},
  numero = {4},
  pages = {1197--1205},
  ISSN = {0931-1890},
  year = {2015},
  DOI = {10.1007/s00468-015-1200-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064762},
}