Chryseochelins-structural characterization of novel citrate-based siderophores produced by plant protecting Chryseobacterium spp.

ABSTRACT: Bacteria secrete siderophores whose function is to acquire iron. In recent years, the siderophores of several Chryseobacterium species were shown to promote the health and growth of various plants such as tomato or rice. However, the chemical nature of Chryseobacterium siderophores remained unexplored despite great interest. In this work, we present the purification and structure elucidation by nuclear magnetic resonance (NMR) spectroscopy and tandem mass spectrometry (MS/MS) of chryseochelin A, a novel citrate-based siderophore secreted by three Chryseobacterium strains involved in plant protection. It contains the unusual building blocks 3-hydroxycadaverine and fumaric acid. Furthermore, the unstable structural isomer chryseochelin B and its stable derivative containing fatty acid chains

SUBMITTER: Rehm K 

PROVIDER: S-EPMC9989332 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature