@article{fdi:010079355,
  title = {{T}ranspiration difference under high evaporative demand in chickpea ({C}icer arietinum{L}.) may be explained by differences in the water transport pathway in the root cylinder},
  author = {{S}ivasakthi, {K}. and {T}haranya, {M}. and {Z}aman-{A}llah, {M}. and {K}holova, {J}. and {T}hirunalasundari, {T}. and {V}adez, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{T}erminal drought substantially reduces chickpea yield. {R}educing water use at vegetative stage by reducing transpiration under high vapor pressure deficit ({VPD}),i.e.under dry/hot conditions, contributes to drought adaptation. {W}e hypothesized that this trait could relate to differences in a genotype's dependence on root water transport pathways and hydraulics. {T}ranspiration rate responses in conservative and profligate chickpea genotypes were evaluated under increasing {VPD} in the presence/absence of apoplastic and cell-to-cell transport inhibitors. {C}onservative genotypes {ICC} 4958 and {ICC} 8058 restricted transpiration under high {VPD} compared to the profligate genotypes {ICC} 14799 and {ICC} 867. {P}rofligate genotypes were more affected by aquaporin inhibition of the cell-to-cell pathway than conservative genotypes, as measured by the root hydraulic conductance and transpiration under high {VPD}. {A}quaporin inhibitor treatment also led to a larger reduction in root hydraulic conductivity in profligate than in conservative genotypes. {I}n contrast, blockage of the apoplastic pathway in roots decreased transpiration more in conservative than in profligate genotypes. {I}nterestingly, conservative genotypes had high early vigour, whereas profligate genotypes had low early vigour. {I}n conclusion, profligate genotypes depend more on the cell-to-cell pathway, which might explain their higher root hydraulic conductivity, whereas water-saving by restricting transpiration led to higher dependence on the apoplastic pathway. {T}his opens the possibility to screen for conservative or profligate chickpea phenotypes using inhibitors, itself opening to the search of the genetic basis of these differences.},
  keywords = {{A}poplastic pathway ; aquaporins ; cell-to-cell pathway ; drought ; hydraulics ; roots ; water saving},
  booktitle = {},
  journal = {{P}lant {B}iology},
  volume = {22},
  numero = {5},
  pages = {769--780},
  ISSN = {1435-8603},
  year = {2020},
  DOI = {10.1111/plb.13147},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079355},
}