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| Home > Publications database > Shoot and root phenotyping of the barley mutant kcs6 (3-ketoacyl-CoAsynthase6) depleted in epicuticular waxes under water limitation |
| Home > Publications database > Shoot and root phenotyping of the barley mutant kcs6 (3-ketoacyl-CoAsynthase6) depleted in epicuticular waxes under water limitation |
| Journal Article | FZJ-2015-03278 |
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2015
Landes Bioscience
Austin, Tex.
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Please use a persistent id in citations: doi:10.1080/15592324.2014.1003752
Abstract: Aerial parts of plants are separated from the environment by a cuticle which functions in protection against desiccation and pathogen attack. Recently, we reported on a barley mutant with defect in the 3-KETOACYL-CoA-SYNTHASE (HvKCS6) gene, resulting in reduced coverage of the cuticle with epicuticular waxes. Spores of adapted and non-adapted powdery mildew fungi germinated less frequently on mutant leaves possibly because plant derived signals are missing. We used a shoot and root phenotyping facility to test whether depletion in epicuticular waxes negatively impacts plant performance under water-limiting conditions. While shoots of mutant plants grew slower at well-watered conditions than wild-type plants, they showed an equal or slightly better growth rate at water limitation. Also for roots, differences between mutant and parental line were less prominent at water-limiting as compared to well-watered conditions. Our results challenge the intuitive belief that reduced epicuticular wax might become a drawback at water limitation.
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