@article{fdi:010079100, title = {{M}aize, sorghum, and pearl millet have highly contrasting species strategies to adapt to water stress and climate change-like conditions}, author = {{C}houdhary, {S}. and {G}uha, {A}. and {K}holova, {J}. and {P}andravada, {A}. and {M}essina, {C}. {D}. and {C}ooper, {M}. and {V}adez, {V}incent}, editor = {}, language = {{ENG}}, abstract = {{T}his study compared maize, sorghum and pearl-millet, leading {C}-4 cereals, for the transpiration rate ({TR}) response to increasing atmospheric and soil water stress. {T}he {TR} response to transiently increasing {VPD} (0.9-4.1 k{P}a) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit ({VPD}) conditions. {M}aize grown under moderate {VPD} conditions restricted {TR} under high {VPD}, but not sorghum and pearl millet. {B}y contrast, when grown under high {VPD}, all species increased {TR} upon increasing {VPD}, suggesting a loss of {TR} responsiveness. {S}orghum and pearl-millet grown under high {VPD} reduced leaf area, but not maize. {U}pon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high {VPD}, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. {I}t is concluded that maize conserves water by restricting transpiration upon increasing {VPD} and under higher soil moisture than sorghum and millet, giving maize significantly higher {TE}, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.}, keywords = {{C}-4 cereals ; {T}ranspiration rate ({TR}) ; {A}tmospheric vapor pressure deficit ; ({VPD}) ; {T}ranspiration efficiency ({TE}) ; {P}rogressive soil drying ({DD}) ; {L}eaf expansion rate ({LER}) ; {F}raction of transpirable soil water ({FTSW})}, booktitle = {}, journal = {{P}lant {S}cience}, volume = {295}, numero = {}, pages = {art. 110297 [14 p.]}, ISSN = {0168-9452}, year = {2020}, DOI = {10.1016/j.plantsci.2019.110297}, URL = {https://www.documentation.ird.fr/hor/fdi:010079100}, }