Flavonoids are involved in phosphorus-deficiency-induced cluster-root formation in white lupin.

ABSTRACT:

Background and aims

Initiation of cluster roots in white lupin (Lupinus albus) under phosphorus (P) deficiency requires auxin signalling, whereas flavonoids inhibit auxin transport. However, little information is available about the interactions between P deficiency and flavonoids in terms of cluster-root formation in white lupin.

Methods

Hydroponic and aeroponic systems were used to investigate the role of flavonoids in cluster-root formation, with or without 75 μm P supply.

Key results

Phosphorus-deficiency-induced flavonoid accumulation in cluster roots depended on developmental stage, based on in situ determination of fluorescence of flavonoids and flavonoid concentration. LaCHS8, which codes for a chalcone synthase isoform, was highly expressed in cluster roots,

SUBMITTER: Xiong C 

PROVIDER: S-EPMC8829899 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature