02422naa a2200349 a 450000100080000000500110000800800410001902400520006010000260011224501380013826000090027652013960028565000170168165000190169865000180171765000170173565000210175265000100177365000180178365000270180165300200182865300250184865300220187365300170189565300200191265300170193270000180194970000200196770000210198770000190200877300450202721362772022-06-14       2022    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/s00709-021-01722-12DOI1 aOLIVEIRA, J. P. V. de  aStomatal cavity modulates the gas exchange of Sorghum bicolor (L.) Moench. grown under different water levels.h[electronic resource]  c2022  aThis work aimed to evaluate the efects of lower water levels on leaf intercellular spaces and to assess their relations with the gas exchange, anatomy, and growth of Sorghum bicolor. Experiments were conducted in a greenhouse, in which plants were subjected to three water conditions (ten replicates, n = 30): well-irrigated, decreased irrigation, and limited irrigation. Lower water levels had no signifcant efect on the growth of S. bicolor but increased the biomass of the roots. Moreover, the number of leaves, leaf area, and leaf size as well as the chlorophyll content were not afected by lower water levels, and no signifcant changes were detected for whole plant photosynthesis, transpiration, or stomatal conductance. The water content of the plants and the water potential remained unchanged. However, compared with other treatments, the decreased irrigation decreased water loss and increased the water retention. Lower water levels increased the intercellular CO2 percentage, mesophyll area, and proportion of stomatal cavities and promoted minor changes in leaf tissue and stomatal traits. The increased stomatal cavities provided higher CO2 uptake and prevented excessive water loss. Thus, modifcations to the intercellular spaces promoted conditions to avoid excessive water loss while concurrently improving CO2 uptake, which are important traits for drought-tolerant plants.  aGas exchange  aPhotosynthesis  aTranspiration  aWater stress  aAnatomia Vegetal  aFolha  aFotossíntese  aTranspiração Vegetal  aAnatomia foliar  aCavidade estomática  aEstresse hídrico  aLeaf anatomy  aStomatal cavity  aTroca gasosa1 aDUARTE, V. P.1 aCASTRO, E. M. e1 aMAGALHAES, P. C.1 aPEREIRA, F. J.  tProtoplasmagv. 259, p. 1081-1097, 2022.