@article{fdi:010053175,
  title = {{N}atural variation of root hydraulics in {A}rabidopsis grown in normal and salt-stressed conditions},
  author = {{S}utka, {M}. and {L}i, {G}. {W}. and {B}oudet, {J}. and {B}oursiac, {Y}. and {D}oumas, {P}atrick and {M}aurel, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o gain insights into the natural variation of root hydraulics and its molecular components, genotypic differences related to root water transport and plasma membrane intrinsic protein ({PIP}) aquaporin expression were investigated in 13 natural accessions of {A}rabidopsis ({A}rabidopsis thaliana). {T}he hydraulic conductivity of excised root systems ({L}p(r)) showed a 2-fold variation among accessions. {T}he contribution of aquaporins to water uptake was characterized using as inhibitors mercury, propionic acid, and azide. {T}he aquaporin-dependent and -independent paths of water transport made variable contributions to the total hydraulic conductivity in the different accessions. {T}he distinct suberization patterns observed among accessions were not correlated with their root hydraulic properties. {R}eal-time reverse transcription-polymerase chain reaction revealed, by contrast, a positive overall correlation between {L}p(r) and certain highly expressed {PIP} transcripts. {R}oot hydraulic responses to salt stress were characterized in a subset of five accessions ({B}ulhary-1, {C}atania-1, {C}olumbia-0, {D}ijon-{M}, and {M}onte-{T}osso-0 [{M}r-0]). {L}p(r) was down-regulated in all accessions except {M}r-0. {I}n {M}r-0 and {C}atania-1, cortical cell hydraulic conductivity was unresponsive to salt, whereas it was down-regulated in the three other accessions. {B}y contrast, the five accessions showed qualitatively similar aquaporin transcriptional profiles in response to salt. {T}he overall work provides clues on how hydraulic regulation allows plant adaptation to salt stress. {I}t also shows that a wide range of root hydraulic profiles, as previously reported in various species, can be observed in a single model species. {T}his work paves the way for a quantitative genetics analysis of root hydraulics.},
  keywords = {},
  booktitle = {},
  journal = {{P}lant {P}hysiology},
  volume = {155},
  numero = {3},
  pages = {1264--1276},
  ISSN = {0032-0889},
  year = {2011},
  DOI = {10.1104/pp.110.163113},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053175},
}