Developmental regulation of lupulin gland-associated genes in aromatic and bitter hops (Humulus lupulus L.).

ABSTRACT:

Background

Hop (Humulus lupulus L.) bitter acids are valuable metabolites for the brewing industry. They are biosynthesized and accumulate in glandular trichomes of the female inflorescence (hop cone). The content of alpha bitter acids, such as humulones, in hop cones can differentiate aromatic from bitter hop cultivars. These contents are subject to genetic and environmental control but significantly correlate with the number and size of glandular trichomes (lupulin glands).

Results

We evaluated the expression levels of 37 genes involved in bitter acid biosynthesis and morphological and developmental differentiation of glandular trichomes to identify key regulatory factors involved in bitter acid content differences. For bitter acid biosynthesis genes, upregulation of humul

SUBMITTER: Patzak J 

PROVIDER: S-EPMC8590222 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature