Impact of drought stress on the aleurone layer from common wheat (T. aestivum) grains
Abstract
Common wheat near-isogenic lines carrying wild or mutated allele of the gene encoding Puroindoline B and displaying distinct hardness, soft or hard corresponding to the two main defined classes in relation to their uses in food making, were grown for two years under well-watered or water-deficit conditions. Grains produced under drought conditions were lighter and smaller with reduced levels of biochemical markers concentrated in the aleurone layer cytoplasm: i.e. ash, phytic acid and albumins-globulins. These results suggested that drought affects either the aleurone layer proportion or its thickness. This is consistent with the known impact of drought on reducing germination, given the key role of the aleurone layer during this stage of plant growth. X-ray microtomography was then used to analyze the aleurone layer in three-dimensions. No changes were observed in the overall volume proportion of the aleurone layer between grains grown under distinct hydric conditions. However, for the first time, variations in the aleurone layer thickness were highlighted, with drought reducing the median thickness within this tissue.
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BibTeX
@article{vorn2026impact,
title = {{Impact of drought stress on the aleurone layer from common wheat (T. aestivum) grains}},
author = {Chankhemra Vorn and Marion Serie and Julien Petit and Jacques Le Gouis and Eric Rondet and Valérie Lullien-Pellerin},
journal = {Journal of Cereal Science},
year = {2026},
month = sep,
doi = {10.1016/j.jcs.2026.104506},
url = {https://hal.inrae.fr/hal-05752946v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Impact of drought stress on the aleurone layer from common wheat (T. aestivum) grains
AU - Chankhemra Vorn
AU - Marion Serie
AU - Julien Petit
AU - Jacques Le Gouis
AU - Eric Rondet
AU - Valérie Lullien-Pellerin
PY - 2026
DA - 2026/09/17
JO - Journal of Cereal Science
DO - 10.1016/j.jcs.2026.104506
UR - https://hal.inrae.fr/hal-05752946v1
AB - Common wheat near-isogenic lines carrying wild or mutated allele of the gene encoding Puroindoline B and displaying distinct hardness, soft or hard corresponding to the two main defined classes in relation to their uses in food making, were grown for two years under well-watered or water-deficit conditions. Grains produced under drought conditions were lighter and smaller with reduced levels of biochemical markers concentrated in the aleurone layer cytoplasm: i.e. ash, phytic acid and albumins-globulins. These results suggested that drought affects either the aleurone layer proportion or its thickness. This is consistent with the known impact of drought on reducing germination, given the key role of the aleurone layer during this stage of plant growth. X-ray microtomography was then used to analyze the aleurone layer in three-dimensions. No changes were observed in the overall volume proportion of the aleurone layer between grains grown under distinct hydric conditions. However, for the first time, variations in the aleurone layer thickness were highlighted, with drought reducing the median thickness within this tissue.
SN - 0733-5210
SN - 1095-9963
ER -