Abstract Background The ability of plant growth-promoting rhizobacteria (PGPR) to alleviate iron deficiency-induced chlorosis in plants has been widely reported. but the role of siderophores in the re-greening process has rarely been investigated. In this study. the Priestia megaterium ZS-3 (ZS-3) siderophore was first characterized. https://www.shopwildwestes.shop/product-category/choker/