ArticleWorld journal of microbiology & biotechnology2026
Mirubactin-like siderophore-Fe complex from Amycolatopsis lurida strain 407 is associated with improved plant Fe status and yield in chickpea (Cicer arietinum L.) under in vitro conditions.
Article in World journal of microbiology & biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Iron deficiency limits legume production on calcareous soils, and commonly used synthetic iron chelates (e.g., Fe-EDTA) are effective but non-biodegradable and may mobilize toxic metals. Microbial siderophores offer an environmentally sound alternative, yet their direct application as biofertilizers remains underexplored. Here, we evaluated the iron-carrying siderophore produced by Amycolatopsis lurida strain 407 as a biofertilizer for chickpea. Siderophore extracts were quantified and characterized by the CAS assay, Fe (III)-ICP-OES, Arnow and FeCl₃ tests, UV-Vis spectroscopy, and genome mining (antiSMASH). Results indicate strain 407 secretes a mixed catecholate-hydroxamate siderophore whose UV-Vis spectrum (200-600 nm) matches mirubactin C and is supported by a mirubactin-like biosynthetic gene cluster in its closest type strain. When applied to chickpea, the Fe + siderophore from strain 407 increased root dry weight and yielded the highest shoot biomass (28 g/ plant), pod/plant (41 pods), and seed/pod (36 seeds), outperforming chemical iron fertilizer, Fe-EDTA/ Sequestrin 138 (22 g, 24 pods, 24 seeds). Furthermore, seed soluble protein (20 mg/g dry seed) was 17% higher than with Sequestrin 138. In this study, for the first time, findings show the mirubactin-like Fe-siderophore from A. lurida 407 enhances plant growth and seed quality and represents a promising, eco-friendly alternative to synthetic iron fertilizers.
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